101
|
Xu J, Zhang X, Guo Z, Yan J, Yu L, Li X, Xue X, Liang X. Short-chain peptides identification of scorpion Buthus martensi
Karsch venom by employing high orthogonal 2D-HPLC system and tandem mass spectrometry. Proteomics 2012; 12:3076-84. [DOI: 10.1002/pmic.201200224] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 07/23/2012] [Accepted: 07/27/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Junyan Xu
- Key Lab of Separation Science for Analytical Chemistry; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Liaoning China
- Graduate School of Chinese Academy of Sciences; Beijing China
| | - Xiuli Zhang
- Key Lab of Separation Science for Analytical Chemistry; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Liaoning China
| | - Zhimou Guo
- Key Lab of Separation Science for Analytical Chemistry; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Liaoning China
| | - Jingyu Yan
- Key Lab of Separation Science for Analytical Chemistry; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Liaoning China
| | - Long Yu
- Key Lab of Separation Science for Analytical Chemistry; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Liaoning China
| | - Xiuling Li
- Key Lab of Separation Science for Analytical Chemistry; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Liaoning China
| | - Xingya Xue
- Key Lab of Separation Science for Analytical Chemistry; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Liaoning China
| | - Xinmiao Liang
- Key Lab of Separation Science for Analytical Chemistry; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Liaoning China
| |
Collapse
|
102
|
Al Asmari A, Khan HA, Manthiri RA. Rapid profiling of crude scorpion venom using liquid chromatography and its relevance to species identification. ACTA CHROMATOGR 2012. [DOI: 10.1556/achrom.24.2012.3.12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
103
|
Burcham PC, Raso A, Kaminskas LM. Chaperone heat shock protein 90 mobilization and hydralazine cytoprotection against acrolein-induced carbonyl stress. Mol Pharmacol 2012; 82:876-86. [PMID: 22869587 DOI: 10.1124/mol.112.078956] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Toxic carbonyls such as acrolein participate in many degenerative diseases. Although the nucleophilic vasodilatory drug hydralazine readily traps such species under "test-tube" conditions, whether these reactions adequately explain its efficacy in animal models of carbonyl-mediated disease is uncertain. We have previously shown that hydralazine attacks carbonyl-adducted proteins in an "adduct-trapping" reaction that appears to take precedence over direct "carbonyl-sequestering" reactions, but how this reaction conferred cytoprotection was unclear. This study explored the possibility that by increasing the bulkiness of acrolein-adducted proteins, adduct-trapping might alter the redistribution of chaperones to damaged cytoskeletal proteins that are known targets for acrolein. Using A549 lung adenocarcinoma cells, the levels of chaperones heat shock protein (Hsp) 40, Hsp70, Hsp90, and Hsp110 were measured in intermediate filament extracts prepared after a 3-h exposure to acrolein. Exposure to acrolein alone modestly increased the levels of all four chaperones. Coexposure to hydralazine (10-100 μM) strongly suppressed cell ATP loss while producing strong adduct-trapping in intermediate filaments. Most strikingly, hydralazine selectively boosted the levels of cytoskeletal-associated Hsp90, including a high-mass species that was sensitive to the Hsp90 inhibitor 17-N-allylamino-17-demethoxygeldanamycin. Biochemical fractionation of acrolein- and hydralazine-treated cells revealed that hydralazine likely promoted Hsp90 migration from cytosol into other subcellular compartments. A role for Hsp90 mobilization in cytoprotection was confirmed by the finding that brief heat shock treatment suppressed acute acrolein toxicity in A549 cells. Taken together, these findings suggest that by increasing the steric bulk of carbonyl-adducted proteins, adduct-trapping drugs trigger the intracellular mobilization of the key molecular chaperone Hsp90.
Collapse
Affiliation(s)
- Philip C Burcham
- Pharmacology, Pharmacy and Anaesthesiology Unit, School of Medicine and Pharmacology, University of Western Australia, Nedlands, Australia.
| | | | | |
Collapse
|
104
|
Profiling the resting venom gland of the scorpion Tityus stigmurus through a transcriptomic survey. BMC Genomics 2012; 13:362. [PMID: 22853446 PMCID: PMC3444934 DOI: 10.1186/1471-2164-13-362] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Accepted: 06/27/2012] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The scorpion Tityus stigmurus is widely distributed in Northeastern Brazil and known to cause severe human envenoming, inducing pain, hyposthesia, edema, erythema, paresthesia, headaches and vomiting. The present study uses a transcriptomic approach to characterize the gene expression profile from the non-stimulated venom gland of Tityus stigmurus scorpion. RESULTS A cDNA library was constructed and 540 clones were sequenced and grouped into 153 clusters, with one or more ESTs (expressed sequence tags). Forty-one percent of ESTs belong to recognized toxin-coding sequences, with transcripts encoding antimicrobial toxins (AMP-like) being the most abundant, followed by alfa KTx- like, beta KTx-like, beta NaTx-like and alfa NaTx-like. Our analysis indicated that 34% of the transcripts encode "other possible venom molecules", which correspond to anionic peptides, hypothetical secreted peptides, metalloproteinases, cystein-rich peptides and lectins. Fifteen percent of ESTs are similar to cellular transcripts. Sequences without good matches corresponded to 11%. CONCLUSIONS This investigation provides the first global view of gene expression of the venom gland from Tityus stigmurus under resting conditions. This approach enables characterization of a large number of venom gland component molecules, which belong either to known or non yet described types of venom peptides and proteins from the Buthidae family.
Collapse
|
105
|
Vessal S, Siddique KH, Atkins CA. Comparative Proteomic Analysis of Genotypic Variation in Germination and Early Seedling Growth of Chickpea under Suboptimal Soil–Water Conditions. J Proteome Res 2012; 11:4289-307. [DOI: 10.1021/pr300415w] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Saeedreza Vessal
- School
of Plant Biology, Faculty of Natural and Agricultural Sciences and ‡Institute of Agriculture, The University of Western Australia,
35 Stirling Highway, Crawley WA 6009, Australia
| | - Kadambot H.M. Siddique
- School
of Plant Biology, Faculty of Natural and Agricultural Sciences and ‡Institute of Agriculture, The University of Western Australia,
35 Stirling Highway, Crawley WA 6009, Australia
| | - Craig A. Atkins
- School
of Plant Biology, Faculty of Natural and Agricultural Sciences and ‡Institute of Agriculture, The University of Western Australia,
35 Stirling Highway, Crawley WA 6009, Australia
| |
Collapse
|
106
|
Shekh RM, Roy U. Biochemical characterization of an anti-Candida factor produced by Enterococcus faecalis. BMC Microbiol 2012; 12:132. [PMID: 22759735 PMCID: PMC3585888 DOI: 10.1186/1471-2180-12-132] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Accepted: 06/21/2012] [Indexed: 02/08/2023] Open
Abstract
Background Because Candida albicans is resistant to several antifungal antibiotics, there is a need to identify other less toxic natural products, particularly antimicrobial proteins, peptides or bacteriocin like inhibitory substances. An attempt has been made to purify and characterise an anti-Candida compound produced by Enterococcus faecalis. Results An anti-Candida protein (ACP) produced by E. faecalis active against 8 C. albicans strains was characterised and partially purified. The ACP showed a broad-spectrum activity against multidrug resistant C. albicans MTCC 183, MTCC 7315, MTCC 3958, NCIM 3557, NCIM 3471 and DI. It was completely inactivated by treatment with proteinase K and partially by pronase E. The ACP retained biological stability after heat-treatment at 90°C for 20 min, maintained activity over a pH range 6–10, and remained active after treatment with α-amylase, lipase, organic solvents, and detergents. The antimicrobial activity of the E. faecalis strain was found exclusively in the extracellular filtrate produced in the late logarithmic growth phase. The highest activity (1600 AU mL-1) against C. albicans MTCC 183 was recorded at 48 h of incubation, and activity decreased thereafter. The peptide showed very low haemagglutination and haemolytic activities against human red blood cells. The antimicrobial substance was purified by salt-fractionation and chromatography. Partially purified ACP had a molecular weight of approximately 43 KDa in Tricine-PAGE analysis. The 12 amino acid N terminal sequence was obtained by Edman degradation. The peptide was de novo sequenced by ESI-MS, and the deduced combined sequence when compared to other bacteriocins and antimicrobial peptide had no significant sequence similarity. Conclusions The inhibitory activity of the test strain is due to the synthesis of an antimicrobial protein. To our knowledge, this is the first report on the isolation of a promising non-haemolytic anti-Candida protein from E. faecalis that might be used to treat candidiasis especially in immunocompromised patients.
Collapse
Affiliation(s)
- Raeesh M Shekh
- Department of Biological Sciences, Birla Institute of Technology and Science BITS Pilani KK Birla Goa Campus, NH-17B, Goa, 403726, India
| | | |
Collapse
|
107
|
Vincent D, Du Fall LA, Livk A, Mathesius U, Lipscombe RJ, Oliver RP, Friesen TL, Solomon PS. A functional genomics approach to dissect the mode of action of the Stagonospora nodorum effector protein SnToxA in wheat. MOLECULAR PLANT PATHOLOGY 2012; 13:467-82. [PMID: 22111512 PMCID: PMC6638714 DOI: 10.1111/j.1364-3703.2011.00763.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this study, proteomics and metabolomics were used to study the wheat response to exposure to the SnToxA effector protein secreted by the fungal pathogen Stagonospora nodorum during infection. Ninety-one different acidic and basic proteins and 101 metabolites were differentially abundant when comparing SnToxA- and control-treated wheat leaves during a 72-h time course. Proteins involved in photosynthesis were observed to increase marginally initially after exposure, before decreasing rapidly and significantly. Proteins and metabolites associated with the detoxification of reactive oxygen species in the chloroplast were also differentially abundant during SnToxA exposure, implying that the disruption of photosynthesis causes the rapid accumulation of chloroplastic reactive oxygen species. Metabolite profiling revealed major metabolic perturbations in central carbon metabolism, evidenced by significant increases in tricarboxylic acid (TCA) cycle intermediates, suggestive of an attempt by the plant to generate ATP and reducing equivalents in response to the collapse of photosynthesis caused by SnToxA. This was supported by the observation that the TCA cycle enzyme malate dehydrogenase was up-regulated in response to SnToxA. The infiltration of SnToxA also resulted in a significant increase in abundance of many pathogenicity-related proteins, even in the absence of the pathogen or other pathogen-associated molecular patterns. This approach highlights the complementary nature of proteomics and metabolomics in studying effector-host interactions, and provides further support for the hypothesis that necrotrophic pathogens, such as S. nodorum, appear to exploit existing host cell death mechanisms to promote pathogen growth and cause disease.
Collapse
Affiliation(s)
- Delphine Vincent
- Research School of Biology, College of Medicine, Biology and Environment, The Australian National University, ACT 0200, Australia
| | | | | | | | | | | | | | | |
Collapse
|
108
|
Diego-García E, Peigneur S, Clynen E, Marien T, Czech L, Schoofs L, Tytgat J. Molecular diversity of the telson and venom components from Pandinus cavimanus
(Scorpionidae
Latreille 1802): Transcriptome, venomics and function. Proteomics 2012; 12:313-28. [DOI: 10.1002/pmic.201100409] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 10/17/2011] [Accepted: 11/08/2011] [Indexed: 11/07/2022]
|
109
|
Bhattacharjee S, Mohanty S, Sharma AP, Mohanty BP. Effect of storage temperature as a preanalytical variable on the lens crystallins protein quality for proteomic studies. Proteomics Clin Appl 2011; 5:504-12. [DOI: 10.1002/prca.201100004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 07/06/2011] [Accepted: 07/11/2011] [Indexed: 11/10/2022]
|
110
|
Islam S, Ma W, Yan G, Gao L, Appels R. Differential recovery of lupin proteins from the gluten matrix in lupin-wheat bread as revealed by mass spectrometry and two-dimensional electrophoresis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:6696-6704. [PMID: 21548652 DOI: 10.1021/jf201293p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Bread made from a mixture of wheat and lupin flour possesses a number of health benefits. The addition of lupin flour to wheat flour during breadmaking has major effects on bread properties. The present study investigated the lupin and wheat flour protein interactions during the breadmaking process including dough formation and baking by using proteomics research technologies including MS/MS to identify the proteins. Results revealed that qualitatively most proteins from both lupin and wheat flour remained unchanged after baking as per electrophoretic behavior, whereas some were incorporated into the bread gluten matrix and became unextractable. Most of the lupin α-conglutins could be readily extracted from the lupin-wheat bread even at low salt and nonreducing/nondenaturing extraction conditions. In contrast, most of the β-conglutins lost extractability, suggesting that they were trapped in the bread gluten matrix. The higher thermal stability of α-conglutins compared to β-conglutins is speculated to account for this difference.
Collapse
Affiliation(s)
- Shahidul Islam
- School of Plant Biology, Faculty of Natural and Agricultural Sciences and The UWA Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | | | | | | | | |
Collapse
|
111
|
|
112
|
Ma Y, Zhao Y, Zhao R, Zhang W, He Y, Wu Y, Cao Z, Guo L, Li W. Molecular diversity of toxic components from the scorpion Heterometrus petersii venom revealed by proteomic and transcriptome analysis. Proteomics 2010; 10:2471-85. [PMID: 20443192 DOI: 10.1002/pmic.200900763] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Scorpion venoms contain a vast untapped reservoir of natural products, which have the potential for medicinal value in drug discovery. In this study, toxin components from the scorpion Heterometrus petersii venom were evaluated by transcriptome and proteome analysis.Ten known families of venom peptides and proteins were identified, which include: two families of potassium channel toxins, four families of antimicrobial and cytolytic peptides,and one family from each of the calcium channel toxins, La1-like peptides, phospholipase A2,and the serine proteases. In addition, we also identified 12 atypical families, which include the acid phosphatases, diuretic peptides, and ten orphan families. From the data presented here, the extreme diversity and convergence of toxic components in scorpion venom was uncovered. Our work demonstrates the power of combining transcriptomic and proteomic approaches in the study of animal venoms.
Collapse
Affiliation(s)
- Yibao Ma
- College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
113
|
Darville LNF, Merchant ME, Hasan A, Murray KK. Proteome analysis of the leukocytes from the American alligator (Alligator mississippiensis) using mass spectrometry. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2010; 5:308-16. [PMID: 20920849 DOI: 10.1016/j.cbd.2010.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Revised: 09/08/2010] [Accepted: 09/08/2010] [Indexed: 01/03/2023]
Abstract
Mass spectrometry was used in conjunction with gel electrophoresis and liquid chromatography, to determine peptide sequences from American alligator (Alligator mississippiensis) leukocytes and to identify similar proteins based on homology. The goal of the study was to generate an initial database of proteins related to the alligator immune system. We have adopted a typical proteomics approach for this study. Proteins from leukocyte extracts were separated using two-dimensional gel electrophoresis and the major bands were excised, digested and analyzed by on-line nano-LC MS/MS to generate peptide sequences. The sequences generated were used to identify proteins and characterize their functions. The protein identity and characterization of the protein function were based on matching two or more peptides to the same protein by searching against the NCBI database using MASCOT and Basic Local Alignment Search Tool (BLAST). For those proteins with only one peptide matching, the phylum of the matched protein was considered. Forty-three proteins were identified that exhibit sequence similarities to proteins from other vertebrates. Proteins related to the cytoskeletal system were the most abundant proteins identified. These proteins are known to regulate cell mobility and phagocytosis. Several other peptides were matched to proteins that potentially have immune-related function.
Collapse
Affiliation(s)
- Lancia N F Darville
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | | | | | | |
Collapse
|
114
|
Kania K, Byrnes EA, Beilby JP, Webb SAR, Strong KJ. Urinary proteases degrade albumin: implications for measurement of albuminuria in stored samples. Ann Clin Biochem 2010; 47:151-7. [PMID: 20150213 DOI: 10.1258/acb.2009.009247] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Previous studies have shown that albumin in stored urine samples degrades over time, and that albumin losses are greatest in samples with low pH conditions (pH < 5). Furthermore, the high-performance liquid chromatography (HPLC) assay for urinary albumin has been shown to be particularly susceptible to the effects of prolonged storage. METHODS Frozen urine samples, stored for 12 months at -70 and -20 degrees C, were analysed for albumin fragmentation. Urinary protease activity was investigated in vitro in urine adjusted to pH 2.3-2.5. Albumin was measured by nephelometry, HPLC and sodium dodecyl sulphate-polyacrylamide gel electrophoresis. RESULTS In the unadjusted samples, albumin was degraded in 11 out of 40 samples stored at -20 degrees C. In the in vitro experiments, both endogenous albumin and exogenous albumin added to urine were rapidly degraded into large fragments within minutes after adjustment to low pH. The fragments produced were consistent with those produced during digestion with pepsin and urinary degradation was completely inhibited by pepstatin. Albumin concentration measured by HPLC was most dramatically affected, with near-complete loss of albumin-sized material within one hour of incubation at pH 2.3-2.5. Sample reactivity with antiserum in a nephelometry assay initially declined then increased, possibly due to exposure of internal epitopes during albumin digestion. CONCLUSIONS This study demonstrated that proteases are present and active in stored human urine samples. Urinary albumin digestion occurred in a manner consistent with activity of endogenous urinary proteases. Adjustment to neutral pH or addition of protease inhibitors may be useful techniques for sample preservation.
Collapse
Affiliation(s)
- Kasia Kania
- School of Pathology and Laboratory Medicine, The University of Western Australia, Nedlands
| | | | | | | | | |
Collapse
|
115
|
Shlyapnikov YM, Kozlov SA, Fedorov AA, Grishin EV. A comparison of polypeptide compositions of individual Agelena orientalis spider venoms. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2010. [DOI: 10.1134/s1068162010010073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
116
|
Yuan W, Cao L, Ma Y, Mao P, Wang W, Zhao R, Wu Y, Cao Z, Li W. Cloning and functional characterization of a new antimicrobial peptide gene StCT1 from the venom of the scorpion Scorpiops tibetanus. Peptides 2010; 31:22-6. [PMID: 19854232 DOI: 10.1016/j.peptides.2009.10.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Revised: 10/12/2009] [Accepted: 10/12/2009] [Indexed: 11/28/2022]
Abstract
Scorpion has an innovative venom gland, which is an important determinant in contributing to its successful survival for more than 400 million years. Scorpion venom contains a diversity of bioactive peptides, which represent a tremendous hitherto unexplored resource for use in drug design and development. Here, StCT1, a new antimicrobial peptide gene, was screened and isolated from the venomous gland cDNA library of the scorpion Scorpiops tibetanus. The full-length cDNA of StCT1 is 369 nucleotides encoding the precursor that contains a putative 24-residue signal peptide, a presumed 14-residue mature peptide, and an uncommon 37-residue acidic propeptide at the C-terminus. The minimal inhibitory concentrations (MICs) of the synthetic StCT1 peptide against Staphylococcus aureus and Micrococcus luteus were 12.5microg/ml and 100microg/ml, respectively. The MICs of StCT1 against clinical antibiotics-resistant bacterial strains, were 50-250microg/ml, 2-40 folds lower than those of penicillin. These results show that the antimicrobial peptide encoded by StCT1 gene from the venom of the scorpion S. tibetanus is a potential anti-infective polypeptide or lead compound, especially for treating antibiotics-resistant pathogens.
Collapse
Affiliation(s)
- Wenying Yuan
- Hubei Maternal and Child Health Hospital, Wuhan, China
| | | | | | | | | | | | | | | | | |
Collapse
|
117
|
Antidotes against venomous animals: State of the art and prospectives. J Proteomics 2009; 72:183-99. [DOI: 10.1016/j.jprot.2009.01.020] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Revised: 01/14/2009] [Accepted: 01/14/2009] [Indexed: 12/12/2022]
|
118
|
Rádis-Baptista G, de la Torre BG, Andreu D. A Novel Cell-Penetrating Peptide Sequence Derived by Structural Minimization of a Snake Toxin Exhibits Preferential Nucleolar Localization. J Med Chem 2008; 51:7041-4. [DOI: 10.1021/jm8009475] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gandhi Rádis-Baptista
- Department of Experimental and Health Sciences, Pompeu Fabra University, Dr Aiguader, 80, E-08003 Barcelona, Spain, and Department of Biochemistry, Center for Biological Sciences, Federal University of Pernambuco, Cidade Universitária, 50732-970 Recife-PE, Brazil
| | - Beatriz G. de la Torre
- Department of Experimental and Health Sciences, Pompeu Fabra University, Dr Aiguader, 80, E-08003 Barcelona, Spain, and Department of Biochemistry, Center for Biological Sciences, Federal University of Pernambuco, Cidade Universitária, 50732-970 Recife-PE, Brazil
| | - David Andreu
- Department of Experimental and Health Sciences, Pompeu Fabra University, Dr Aiguader, 80, E-08003 Barcelona, Spain, and Department of Biochemistry, Center for Biological Sciences, Federal University of Pernambuco, Cidade Universitária, 50732-970 Recife-PE, Brazil
| |
Collapse
|
119
|
Williams NK, Lucet IS, Klinken SP, Ingley E, Rossjohn J. Crystal structures of the Lyn protein tyrosine kinase domain in its Apo- and inhibitor-bound state. J Biol Chem 2008; 284:284-291. [PMID: 18984583 DOI: 10.1074/jbc.m807850200] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The Src-family protein-tyrosine kinase (PTK) Lyn is the most important Src-family kinase in B cells, having both inhibitory and stimulatory activity that is dependent on the receptor, ligand, and developmental context of the B cell. An important role for Lyn has been reported in acute myeloid leukemia and chronic myeloid leukemia, as well as certain solid tumors. Although several Src-family inhibitors are available, the development of Lyn-specific inhibitors, or inhibitors with reduced off-target activity to Lyn, has been hampered by the lack of structural data on the Lyn kinase. Here we report the crystal structure of the non-liganded form of Lyn kinase domain, as well as in complex with three different inhibitors: the ATP analogue AMP-PNP; the pan Src kinase inhibitor PP2; and the BCR-Abl/Src-family inhibitor Dasatinib. The Lyn kinase domain was determined in its "active" conformation, but in the unphosphorylated state. All three inhibitors are bound at the ATP-binding site, with PP2 and Dasatinib extending into a hydrophobic pocket deep in the substrate cleft, thereby providing a basis for the Src-specific inhibition. Analysis of sequence and structural differences around the active site region of the Src-family PTKs were evident. Accordingly, our data provide valuable information for the further development of therapeutics targeting Lyn and the important Src-family of kinases.
Collapse
Affiliation(s)
- Neal K Williams
- Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia, and the Laboratory for Cancer Medicine and Cell Signalling Group, Western Australian Institute for Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Western Australia 6000, Australia
| | - Isabelle S Lucet
- Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia, and the Laboratory for Cancer Medicine and Cell Signalling Group, Western Australian Institute for Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Western Australia 6000, Australia
| | - S Peter Klinken
- Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia, and the Laboratory for Cancer Medicine and Cell Signalling Group, Western Australian Institute for Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Western Australia 6000, Australia
| | - Evan Ingley
- Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia, and the Laboratory for Cancer Medicine and Cell Signalling Group, Western Australian Institute for Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Western Australia 6000, Australia; Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia, and the Laboratory for Cancer Medicine and Cell Signalling Group, Western Australian Institute for Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Western Australia 6000, Australia
| | - Jamie Rossjohn
- Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia, and the Laboratory for Cancer Medicine and Cell Signalling Group, Western Australian Institute for Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Western Australia 6000, Australia.
| |
Collapse
|
120
|
Bringans S, Kendrick TS, Lui J, Lipscombe R. A comparative study of the accuracy of several de novo sequencing software packages for datasets derived by matrix-assisted laser desorption/ionisation and electrospray. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:3450-4. [PMID: 18837480 DOI: 10.1002/rcm.3752] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
|
121
|
Tityus serrulatus venom peptidomics: Assessing venom peptide diversity. Toxicon 2008; 52:611-8. [DOI: 10.1016/j.toxicon.2008.07.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2008] [Revised: 07/17/2008] [Accepted: 07/22/2008] [Indexed: 11/23/2022]
|