1
|
Jackman JA, Ferhan AR, Yoon BK, Park JH, Zhdanov VP, Cho NJ. Indirect Nanoplasmonic Sensing Platform for Monitoring Temperature-Dependent Protein Adsorption. Anal Chem 2017; 89:12976-12983. [DOI: 10.1021/acs.analchem.7b03921] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Joshua A. Jackman
- School of Materials Science and Engineering and Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Abdul Rahim Ferhan
- School of Materials Science and Engineering and Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Bo Kyeong Yoon
- School of Materials Science and Engineering and Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Jae Hyeon Park
- School of Materials Science and Engineering and Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Vladimir P. Zhdanov
- School of Materials Science and Engineering and Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
- Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - Nam-Joon Cho
- School of Materials Science and Engineering and Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459, Singapore
| |
Collapse
|
2
|
McGinley MD, Narhi LO, Kelley MJ, Davy E, Robinson J, Rohde MF, Wright SD, Lichenstein HS. CD14: physical properties and identification of an exposed site that is protected by lipopolysaccharide. J Biol Chem 1995; 270:5213-8. [PMID: 7534290 DOI: 10.1074/jbc.270.10.5213] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Soluble CD14 (sCD14) is a 55-kDa serum protein that binds lipopolysaccharide (LPS) and mediates LPS-dependent responses in a variety of cells. Using recombinant sCD14 expressed in Chinese hamster ovary (CHO) cells, we examined the structural characteristics of sCD14 and sCD14.LPS complexes. The circular dichroism and fluorescence spectra of the sCD14 indicate that it contains substantial beta-sheet (40%) and a well-defined tertiary structure with the tryptophan residues located in environments with different degrees of hydrophobicity and solvent exposure. The spectra of the sCD14.LPS complex are identical within experimental error to the uncomplexed sCD14. Changes in surface accessibility upon LPS binding were examined using limited proteolysis with endoproteinase Asp-N. This analysis revealed that aspartic acid residues at amino acids 57, 59, and 65 are susceptible to cleavage by Asp-N, while the same residues are protected from proteolytic cleavage in the sCD14.LPS complex. These results suggest that a region including amino acids 57 to 64 is involved in LPS binding by sCD14.
Collapse
MESH Headings
- Amino Acid Sequence
- Animals
- Antigens, CD/chemistry
- Antigens, CD/isolation & purification
- Antigens, CD/metabolism
- Antigens, Differentiation, Myelomonocytic/chemistry
- Antigens, Differentiation, Myelomonocytic/isolation & purification
- Antigens, Differentiation, Myelomonocytic/metabolism
- Binding Sites
- CHO Cells
- Chromatography, High Pressure Liquid
- Circular Dichroism
- Cricetinae
- Humans
- Lipopolysaccharide Receptors
- Lipopolysaccharides/isolation & purification
- Lipopolysaccharides/metabolism
- Mass Spectrometry
- Molecular Sequence Data
- Peptide Fragments/chemistry
- Peptide Fragments/isolation & purification
- Protein Conformation
- Recombinant Proteins/biosynthesis
- Recombinant Proteins/chemistry
- Recombinant Proteins/isolation & purification
- Spectrometry, Fluorescence
- Transfection
Collapse
Affiliation(s)
- M D McGinley
- Amgen Inc., Amgen Center, Thousand Oaks, California 91320
| | | | | | | | | | | | | | | |
Collapse
|
3
|
Hashimoto C, Muramatsu I. Synthesis and Circular Dichroism Spectra of Sperm Whale Myoglobin-(57-96)-Tetracontapeptide. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1993. [DOI: 10.1246/bcsj.66.181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
4
|
Acharya AS, Iyer KS, Sahni G, Khandke KM, Manjula BN. Restriction in the conformational flexibility of apoproteins in the presence of organic cosolvents: a consequence of the formation of "native-like conformation". JOURNAL OF PROTEIN CHEMISTRY 1992; 11:527-38. [PMID: 1333215 DOI: 10.1007/bf01025030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The influence of n-propanol on the overall alpha-helical conformation of beta-globin, apocytochrome C, and the functional domain of streptococcal M49 protein (pepM49) and its consequence on the proteolysis of the respective proteins has been investigated. A significant amount of alpha-helical conformation is induced into these proteins at pH 6.0 and 4 degrees C in the presence of relatively low concentrations of n-propanol. The induction of alpha-helical conformation into the proteins increased as a function of the propanol concentration, the maximum induction occurring around 30% n-propanol. In the case of alpha-globin, the fluorescence of its tryptophyl residues also increased as a function of n-propanol concentration, the midpoint of this transition being around 20% n-propanol. Furthermore, concomitant with the induction of helical conformation into these proteins, the proteolysis of their polypeptide chain by V8 protease also gets restricted. The alpha-helical conformation induced into alpha- and beta-globin by n-propanol decreased as the temperature is raised from 4 to 24 degrees C. In contrast, the alpha-helical conformation of both alpha- and beta-chain (i.e., globin with noncovalently bound heme) did not exhibit such a sensitivity to this change in temperature. However, distinct differences exist between the n-propanol induced "alpha-helical conformation" of globins and the "alpha-helical conformation" of alpha- and beta-chains. A cross-correlation of the n-propanol induced increase in the fluorescence of beta-globin with the corresponding increase in the alpha-helical conformation of the polypeptide chain suggested that the fluorescence increase represents a structural change of the protein that is secondary to the induction of the alpha-helical conformation into the protein (i.e., an integration of the helical conformation induced to the segments of the polypeptide chain to influence the microenvironment of the tryptophyl residues). Presumably, the fluorescence increase is a consequence of the packing of the helical segments of globin to generate a "native-like structure." The induction of alpha-helical conformation into these proteins in the presence of n-propanol and the consequent generation of "native-like conformation" is not unique to n-propanol. Trifluoroethanol, another helix-inducing organic solvent, also behaves in the same fashion as n-propanol. However, in contrast to the proteins described above, n-propanol could neither induce an alpha-helical conformation into performic acid oxidized RNAse-A nor restrict its proteolysis by proteases.(ABSTRACT TRUNCATED AT 400 WORDS)
Collapse
Affiliation(s)
- A S Acharya
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York 10641
| | | | | | | | | |
Collapse
|
5
|
Hashimoto C. Synthesis of Sperm Whale Myoglobin-(77–96)-Eicosapeptide and Circular Dichroism Spectra of the Related Peptides. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1992. [DOI: 10.1246/bcsj.65.1268] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
6
|
Narhi LO, Rhode MF, Hunt P, Arakawa T. The limited proteolysis of tumor necrosis factor-alpha. JOURNAL OF PROTEIN CHEMISTRY 1989; 8:669-77. [PMID: 2610861 DOI: 10.1007/bf01025607] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The limited proteolysis of human recombinant TNF-alpha by trypsin yields two stable products resulting from cleavage after Arg6 and Arg44. In solution these two products remain associated together in a trimer with a Stokes' radius slightly greater than the radius of intact TNF-alpha and, therefore, could not be separated from each other under nondenaturing conditions. This limited digest retains at least 20% of the activity of the original TNF-alpha sample, and has a tertiary structure that is similar to that of the native protein by circular dichroism. On the other hand, incorrectly folded, inactive TNF-alpha undergoes extensive digestion following similar treatment with trypsin. These results indicate that the active form of TNF-alpha has a tight core structure which is maintained after N-terminal cleavage and removal.
Collapse
Affiliation(s)
- L O Narhi
- Amgen Inc., Thousand Oaks, California 91320
| | | | | | | |
Collapse
|
7
|
Peña MC, Rico M, Jiménez MA, Herranz J, Santoro J, Nieto JL. Conformational properties of the isolated 1-23 fragment of human hemoglobin alpha-chain. BIOCHIMICA ET BIOPHYSICA ACTA 1988; 957:380-9. [PMID: 3196719 DOI: 10.1016/0167-4838(88)90229-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
With the purpose of establishing whether, as a general rule, regions of a protein chain that are helical in the native structure maintain, at least partially, the same helical structure when isolated in solution, we have prepared the 1-23 fragment of human hemoglobin alpha-chain, and studied its conformational properties in aqueous solution by CD and 1H-NMR. From the analysis of CD and NMR spectral changes with temperature, salt and addition of trifluoroethanol (TFE) it can be concluded that the 1-23 peptide forms a measurable population (18% at 22 degrees C (pH 5.6) TFE/H2O, 30:70 (v/v)) of an alpha-helix structure that spans the same residues that are helical in the native protein (namely, 6 to 17). These results, taken together with similar ones obtained previously in the 1-19, 21-42 and 50-61 RNAase fragments, support the idea that no helices other than the native ones are actually formed in solution by protein fragments. This implies that the final helical structure of a protein is present from the very beginning of the folding process, and also that such elements of secondary structure can act as primary nucleation centers.
Collapse
Affiliation(s)
- M C Peña
- Institute of Structure of Matter, CSIC, Madrid, Spain
| | | | | | | | | | | |
Collapse
|
8
|
Atassi MZ, Bixler GS. T-cell recognition and antigen presentation of myoglobin. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1987; 225:65-87. [PMID: 3331065 DOI: 10.1007/978-1-4684-5442-0_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Determination of the T-cell recognition profile of Mb by the overlapping peptide strategy revealed that the protein has six T sites. Five of these coincide with the antigenic sites while one site was recognized exclusively by T cells and not by any detectable levels of antibody. Recognition of the synthetic T sites by protein-primed T cell lines or clones indicated that T cells display an unusual peptide size requirement beyond the essential contact residues of the T site. The antigen presentation of Mb has been examined with the significant advantage of knowing the full profiles of T- and B-cell recognition of this multi-determinant antigen. Significant differences in the patterns of T-cell recognition were observed following protein-priming as compared to peptide-priming. The absence of a clear relationship between these patterns of recognition presents a strong evidence against a mechanism of antigen presentation which is dependent on the generation of peptide fragments with the latter being the 'presented' species. From this new perspective, the protein molecule must be predominantly presented in its intact form.
Collapse
Affiliation(s)
- M Z Atassi
- Marrs McLean Department of Biochemistry, Baylor College of Medicine, Houston, Texas 77030
| | | |
Collapse
|
9
|
Atassi MZ. Perspectives of the immunology of proteins. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1985; 185:1-25. [PMID: 2416195 DOI: 10.1007/978-1-4684-7974-4_1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
10
|
Atassi MZ. Antigenic structures of proteins. Their determination has revealed important aspects of immune recognition and generated strategies for synthetic mimicking of protein binding sites. EUROPEAN JOURNAL OF BIOCHEMISTRY 1984; 145:1-20. [PMID: 6208027 DOI: 10.1111/j.1432-1033.1984.tb08516.x] [Citation(s) in RCA: 208] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Studies in this laboratory have resulted in the delineation and synthetic verification of several complete protein antigenic structures that are recognized by antibodies. More recently, for the first time, the full profiles of the sites that are recognized by T cells have been localized and confirmed by synthesis for two proteins, myoglobin and lysozyme. These have thus far constituted the only complete antigenic structures to be determined. The availability of these antigenic structures has enabled us to investigate in detail the molecular and cellular parameters responsible for immune recognition, responses to, and control and regulation of these responses to protein antigens at the molecular and submolecular levels. Moreover, these investigations have afforded general strategies for the synthetic mimicking of not only antigenic sites, but also protein binding sites involved in other biological activities.
Collapse
|
11
|
Young CR, Atassi MZ. T-lymphocyte recognition of sperm-whale myoglobin. Recognition of synthetic peptides carrying antigenic site 5 by myoglobin-primed T-cells. JOURNAL OF IMMUNOGENETICS 1983; 10:139-49. [PMID: 6189917 DOI: 10.1111/j.1744-313x.1983.tb01026.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Previous studies from this laboratory have resulted in the determination of the antigenic structure of sperm-whale myoglobin (Mb). In the present work, we have investigated the fine specificity requirements for T-cell recognition of one of the Mb antigenic sites (antigenic site 5). The antigenic site (peptide 145-153) and seven progressively longer peptides, increasing in length stepwise by two residues at a time, up to 22 residues in length (peptide 132-153), were synthesized. In addition, four truncated peptides were synthesized with intentional deletions at Tyr-151 and Ala-144. The T-cell recognition of these purified synthetic peptides was examined here in detail in three strains of mice (BALB/cByJ, B10.D2/n and SJL/J). Mb-primed mice afforded T-cells which proliferated to smaller peptides (two or four residues longer than the site; i.e. peptides 145-153 and 143-153) and more so to the longer peptides 135-153 and 132-153 and to Mb. No response was obtained to the truncated peptides, thus underscoring the fine specificity T-cells. No response was obtained also to intermediate-sized peptides. The latter result, due to an unfavourable mode of folding, suggested a conformational dependency in T-lymphocyte recognition.
Collapse
|
12
|
Young CR, Atassi MZ. Dissection of the molecular parameters for T-cell recognition of a myoglobin antigenic site. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1982; 150:73-93. [PMID: 6183947 DOI: 10.1007/978-1-4684-4331-8_5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Previous studies from this laboratory have resulted in the determination of the antigenic structure of sperm-whale myoglobin (Mb). In the present work, we have investigated the fine specificity requirements for T-cell recognition of one of the Mb antigenic sites (antigenic site 5). The antigenic site (peptide 145-153) and seven progressively longer peptides, increasing in length stepwise by two residues at a time up to 22 residues in length (peptide 132-153), were synthesized. In addition, four truncated peptides were synthesized with intentional deletions at Tyr-151 and Ala-144. The T-cell recognition of these purified synthetic peptides was examined here in detail in three strains of mice (BALB/cByJ, B10.D2/n and SJL/J). Mb-primed mice afforded T-cells which proliferated to smaller peptides (two or four residues longer than the site; i.e. peptides 145-153 and 143-153) and more so to the longer peptides 135-153 and 132-153 and to Mb. No response was obtained to the truncated peptides, thus underscoring the fine specificity of T-cells. No response was obtained also to intermediate-sized peptides. The latter result, due to an unfavorable mode of folding, suggested a conformational dependency in T-lymphocyte recognition and was confirmed by additional studies employing peptide priming. Thus priming with either the 11- or 22-residue peptides afforded T-cells which proliferated to both of these two peptides, but not to intermediate-sized peptides. More importantly, peptide-primed cells did not proliferate on challenge in vitro with Mb. This indicated that the in vivo recognition (priming) was to the unfolded peptide and these cells will not therefore recognize native Mb in vitro. Tolerization of neonatal mice with native Mb, which was total for the native protein at the T-cell level, had no effect on in vivo recognition (priming) and in vitro proliferation due to the unfolded peptide. Conversely, tolerization by any unfolded peptide had little or no effect on in vivo recognition of, and proliferation to, native Mb. It was concluded that T-cell recognition of native proteins (or at least of Mb) is dependent on protein conformation. A peptide may not cause proliferation of native protein-primed T-cells even though it contains an antigenic site. Finally, macrophage presentation of protein antigens is not related to processing via fragmentation of antigen by macrophage.
Collapse
|
13
|
Chang JY, Gleich GJ, Atassi MZ. The role of the thiol group and the disulfide bond in the conformation and the IgE and IgG binding activities of ragweed allergen Ra3. Mol Immunol 1981; 18:991-7. [PMID: 6176852 DOI: 10.1016/0161-5890(81)90117-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
14
|
Brinegar AC, Kinsella JE. Reversible modification of lysine in beta-lactoglobulin using citraconic anhydride. Effects on the sulfhydryl groups. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1981; 18:18-25. [PMID: 6796534 DOI: 10.1111/j.1399-3011.1981.tb02035.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Acylation of lysine in beta-lactoglobulin-B with citraconic anhydride resulted in a loss of free sulfhydryl groups. These were not regenerated under the conditions used to remove the modifying groups from lysine. Gel filtration and polyacrylamide gel electrophoresis of the citraconylated and decitraconylated beta-lactoglobulin showed the presence of high molecular weight components. Modification of sulfhydryl groups with N-ethylmaleimide prior to citraconylation prevented the formation of these high molecular weight components. The heterogeneity of the decitraconylated protein was attributed to a combination of intermolecular disulfide bonding of subunits caused by structural changes occurring during lysine modification and to alkylation of free sulfhydryl groups via the citraconyl double bond.
Collapse
|
15
|
Slabý I, Holmgren A. Structure and enzymatic functions of thioredoxin refolded by complementation of two tryptic peptide fragments. Biochemistry 1979; 18:5584-91. [PMID: 391270 DOI: 10.1021/bi00592a010] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The physicochemical and catalytic properties of thioredoxin-T' are described. This complemented protein structure consists of a 1:1 complex between the inactive fragments thioredoxin-T-(1--73) and thioredoxin T-(74--108). These are generated by selective trypsin cleavage at Arg-73 in lysine-modified and denatured Escherichia coli thioredoxin. Thioredoxin-T' was a slowly formed but stable complex with an apparent KD below 10(-8) M. The tryptophan fluorescence spectrum and the CD spectrum were very similar to those of native thioredoxin; some conformational differences were detected by gel chromatography and radioimmunoassay. Thioredoxin-T'-S2 was a substrate for NADPH and thioredoxin reductase and had 1--2% of the activity of native thioredoxin. This low relative activity was the result of a major increase in the Km value. Thioredoxin-(SH)2 was a hydrogen donor for E. coli ribonucleotide reductase with about 3% relative activity. These results for thioredoxin-T' are correlated with the known three-dimensional structure of thioredoxin. The microenvironment around Arg-73 that is close to the active disulfide appears to be of critical importance for the interactions of thioredoxin with thioredoxin reductase and ribonucleotide reductase.
Collapse
|
16
|
Bergman L, Kuehl W. Formation of an intrachain disulfide bond on nascent immunoglobulin light chains. J Biol Chem 1979. [DOI: 10.1016/s0021-9258(19)86780-7] [Citation(s) in RCA: 73] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
17
|
Vita C, Fontana A, Seeman JR, Chaiken IM. Conformational and immunochemical analysis of the cyanogen bromide fragments of thermolysin. Biochemistry 1979; 18:3023-31. [PMID: 111708 DOI: 10.1021/bi00581a018] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
18
|
Krigbaum WR, Komoriya A. Local interactions as a structure determinant for protein molecules: III. BIOCHIMICA ET BIOPHYSICA ACTA 1979; 576:229-46. [PMID: 760807 DOI: 10.1016/0005-2795(79)90499-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Investigation of the known protein structures has led to the generalization that the native folding permits each sidechain to select those nearest-neighbors which maximize stabilization from van der Waals interactions. With regard to secondary structure: 1. Helical and beta regions exhibit characteristic patterns of short-range contacts (residue numbers k and k + t with [t] less than or equal to 4) due to the geometries of these secondary structures. However, these are not strictly obligatory, and preferred short-range contacts which would result in unfavorable van der Waals interactions are replaced by favorable long-range contacts. 2. The generalization mentioned at the outset holds for individual proteins, both for short-range and long-range contacts, and without regard for the type or amount of secondary structure present. 3. These observations imply that van der Waals interactions arising from short-range contacts partially determine secondary structure, and this is demonstrated by tests based upon assignment of regions of secondary structure in the known proteins. The principle of optimizing van der Waals stabilization from long-range contacts is applied to predict the structure of the complex formed by the S-peptide and S-protein of ribonuclease-S. The formation of favorable pairs is found to be more important than the total number of intermolecular contacts, and 40 to 50% of this stabilization is contributed by two residues of the S-peptide, Phe-8 and Met-13.
Collapse
|
19
|
Creighton TE. Experimental studies of protein folding and unfolding. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 1979; 33:231-97. [PMID: 358273 DOI: 10.1016/0079-6107(79)90030-0] [Citation(s) in RCA: 429] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
20
|
Atassi MZ. The antigenic structure of myoglobin and initial consequences of its precise determination. CRC CRITICAL REVIEWS IN BIOCHEMISTRY 1979; 6:337-69. [PMID: 88297 DOI: 10.3109/10409237909105425] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
21
|
Atassi MZ. Precise determination of the entire antigenic structure of lysozyme: molecular features of protein antigenic structures and potential of "surface-simulation" synthesis--a powerful new concept for protein binding sites. IMMUNOCHEMISTRY 1978; 15:909-36. [PMID: 86497 DOI: 10.1016/0161-5890(78)90126-8] [Citation(s) in RCA: 221] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
22
|
Johnson E, Anderson W, Wetlaufer D. Formation of three-dimensional structure in protein fragments. Reoxidation of reduced hen egg lysozyme fragment 13-105. J Biol Chem 1978. [DOI: 10.1016/s0021-9258(17)34815-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
23
|
Paull BR, Gleich GJ, Atassi MZ. Separation of active subunits of ragweed antigen E. IMMUNOCHEMISTRY 1978; 15:199-202. [PMID: 646866 DOI: 10.1016/0161-5890(78)90149-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
24
|
Atassi MZ, Habeeb AF, Lee CL. Immunochemistry of serum albumin--II. Isolation and characterization of a fragment from the first third of bovine serum albumin carrying almost all the antigenic reactivity of the protein. IMMUNOCHEMISTRY 1976; 13:547-55. [PMID: 950247 DOI: 10.1016/0019-2791(76)90332-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
25
|
Finkelstein AV, Ptitsyn OB. A theory of protein molecule self-organization. IV. Helical and irregular local structures of unfolded protein chains. J Mol Biol 1976; 103:15-24. [PMID: 957423 DOI: 10.1016/0022-2836(76)90049-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
26
|
|
27
|
Nagano K, Hasegawa K. Logical analysis of the mechanism of protein folding III. Prediction of the strong long-range interactions. J Mol Biol 1975; 94:257-81. [PMID: 1142442 DOI: 10.1016/0022-2836(75)90082-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
28
|
Atassi MZ. Antigenic structure of myoglobin: the complete immunochemical anatomy of a protein and conclusions relating to antigenic structures of proteins. IMMUNOCHEMISTRY 1975; 12:423-38. [PMID: 53189 DOI: 10.1016/0019-2791(75)90010-5] [Citation(s) in RCA: 424] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
29
|
Pai RC, Atassi MZ. Immunochemistry of sperm-whale myoglobin--XX. Accurate delineation of the single reactive region in sequence 80-103 by immunochemical studies of synthetic peptides. IMMUNOCHEMISTRY 1975; 12:285-90. [PMID: 53185 DOI: 10.1016/0019-2791(75)90177-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
30
|
|
31
|
Panijpan B, Gratzer WB. Conformational nature of monomeric glucagon. EUROPEAN JOURNAL OF BIOCHEMISTRY 1974; 45:547-53. [PMID: 4851146 DOI: 10.1111/j.1432-1033.1974.tb03580.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
32
|
|
33
|
|
34
|
Perlstein MT, Atassi MZ. Immunochemistry of sperm whale myoglobin. XV. Accurate delineation of the single antigenic reactive region in sequence 1-55 of myoglobin by chemical derivatives of the peptide carrying the region: conclusions relating to antigenic structures of proteins. IMMUNOCHEMISTRY 1974; 11:63-70. [PMID: 4822859 DOI: 10.1016/0019-2791(74)90317-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
35
|
Koketsu J, Atassi MZ. Immunochemistry of sperm-whale myoglobin. XVI. Accurate delineation of the single region in sequence 1-55 by immunochemical studies of synthetic peptides. Some conclusions concerning antigenic structures of proteins. IMMUNOCHEMISTRY 1974; 11:1-8. [PMID: 4855726 DOI: 10.1016/0019-2791(74)90335-8] [Citation(s) in RCA: 94] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
36
|
|
37
|
Habeeb AF, Lee CL, Atassi MZ. Conformational studies on modified proteins and peptides. VII. Conformation of epsilon-prototoxin and epsilon-toxin from Clostridium perfringens. Conformational changes associated with toxicity. BIOCHIMICA ET BIOPHYSICA ACTA 1973; 322:245-50. [PMID: 4358084 DOI: 10.1016/0005-2795(73)90300-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
38
|
Atassi MZ, Perlstein MT. Immunochemistry of sperm whale myoglobin. XIV. Role of histidines 12 and 24 in the antigenic structure. IMMUNOCHEMISTRY 1973; 10:601-6. [PMID: 4758987 DOI: 10.1016/0019-2791(73)90161-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
39
|
|
40
|
Nagano K. Logical analysis of the mechanism of protein folding. I. Predictions of helices, loops and beta-structures from primary structure. J Mol Biol 1973; 75:401-20. [PMID: 4728695 DOI: 10.1016/0022-2836(73)90030-2] [Citation(s) in RCA: 141] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
41
|
|
42
|
Puett D. Chain folding in ribonuclease A derivatives lacking five and six carboxyl-terminal residues. Biochemistry 1972; 11:4304-7. [PMID: 4562587 DOI: 10.1021/bi00773a017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
43
|
Atassi MZ, Suliman AM, Habeeb AF. Enzymic and immunochemical properties of lysozyme. VI. Conformation, enzymic activity and immunochemistry of derivatives modified at arginine residues. IMMUNOCHEMISTRY 1972; 9:907-20. [PMID: 4116340 DOI: 10.1016/0019-2791(72)90164-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
44
|
|
45
|
Puett D. A study on the conformation and conformational stability of ribonuclease A and its peptic derivative, des-(121-124)-ribonuclease. Biochemistry 1972; 11:1980-90. [PMID: 4554499 DOI: 10.1021/bi00760a038] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
46
|
Habeeb AF, Schrohenloher RE, Bennett JC. Studies of the component chains of human IgM by citraconylation. BIOCHIMICA ET BIOPHYSICA ACTA 1972; 263:339-50. [PMID: 5031162 DOI: 10.1016/0005-2795(72)90087-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
47
|
Puett D. On the formation of secondary and tertiary structure in apomyoglobin. BIOCHIMICA ET BIOPHYSICA ACTA 1972; 257:537-42. [PMID: 5063252 DOI: 10.1016/0005-2795(72)90309-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
48
|
|
49
|
Hill RJ. Alpha-helical regions in immunoglobulins: an estimate based on Kotelchuck and Scheraga's rules. IMMUNOCHEMISTRY 1971; 8:841-9. [PMID: 5167492 DOI: 10.1016/0019-2791(71)90450-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
50
|
|