51
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Understanding protein adsorption phenomena at solid surfaces. Adv Colloid Interface Sci 2011; 162:87-106. [PMID: 21295764 DOI: 10.1016/j.cis.2010.12.007] [Citation(s) in RCA: 992] [Impact Index Per Article: 76.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 12/21/2010] [Accepted: 12/28/2010] [Indexed: 11/21/2022]
Abstract
Protein adsorption at solid surfaces plays a key role in many natural processes and has therefore promoted a widespread interest in many research areas. Despite considerable progress in this field there are still widely differing and even contradictive opinions on how to explain the frequently observed phenomena such as structural rearrangements, cooperative adsorption, overshooting adsorption kinetics, or protein aggregation. In this review recent achievements and new perspectives on protein adsorption processes are comprehensively discussed. The main focus is put on commonly postulated mechanistic aspects and their translation into mathematical concepts and model descriptions. Relevant experimental and computational strategies to practically approach the field of protein adsorption mechanisms and their impact on current successes are outlined.
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52
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Markwick PRL, McCammon JA. Studying functional dynamics in bio-molecules using accelerated molecular dynamics. Phys Chem Chem Phys 2011; 13:20053-65. [DOI: 10.1039/c1cp22100k] [Citation(s) in RCA: 139] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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53
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Lee S, Boo C, Elimelech M, Hong S. Comparison of fouling behavior in forward osmosis (FO) and reverse osmosis (RO). J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.08.036] [Citation(s) in RCA: 570] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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54
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Beauchamp DL, Khajehpour M. Probing the effect of water-water interactions on enzyme activity with salt gradients: a case-study using ribonuclease t1. J Phys Chem B 2010; 114:16918-28. [PMID: 21114308 DOI: 10.1021/jp107556s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Water molecules interact with one another via hydrogen bonds. Experimental and theoretical evidence indicates that these hydrogen bonds occur in two modalities--high- and low-angle hydrogen bonding--and that the addition of various solutes to water affects only the number of water molecules participating in a specific type of hydrogen bond interactions, not the nature of the water-water interactions. In this work, we have investigated the effect of each of these hydrogen bonding types upon the activity of the enzyme ribonuclease t1. This was done through perturbation of the water hydrogen bonding distribution by using various salts. Our results indicate that various salts differ in their ability to reduce the enzymatic activity of ribonuclease t1, and this ability is well correlated with the ability of each salt to promote high-angle hydrogen bonding in water. By applying the two-phase model of liquid water (i.e., liquid water being modeled as an equilibrium existing between two phases, LD and HD water), we demonstrate that our results are compatible with the assumption that increasing the population of high-angle hydrogen bonds among water molecules stabilizes the more compact, less active conformations of the enzyme. This indicates that the structures that proteins adopt in water solution depend upon the nature of interactions between water molecules.
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Affiliation(s)
- David L Beauchamp
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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55
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Puolanne E, Halonen M. Theoretical aspects of water-holding in meat. Meat Sci 2010; 86:151-65. [DOI: 10.1016/j.meatsci.2010.04.038] [Citation(s) in RCA: 197] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 04/21/2010] [Accepted: 04/29/2010] [Indexed: 11/15/2022]
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56
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Hydroxylamine as a thermal destabiliser of bacteriorhodopsin. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2010; 39:1605-11. [DOI: 10.1007/s00249-010-0618-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Revised: 06/26/2010] [Accepted: 06/29/2010] [Indexed: 11/26/2022]
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57
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Abstract
The study of the interactions of salts and osmolytes with macromolecules in aqueous solution originated with experiments concerning protein precipitation more than 100 years ago. Today, these solutes are known to display recurring behavior for myriad biological and chemical processes. Such behavior depends both on the nature and concentration of the species in solution. Despite the generality of these effects, our understanding of the molecular-level details of ion and osmolyte specificity is still quite limited. Here, we review recent studies of the interactions between anions and urea with model macromolecular systems. A mechanism for specific ion effects is elucidated for aqueous systems containing charged and uncharged polymers, polypeptides, and proteins. The results clearly show that the effects of the anions are local and involve direct interactions with macromolecules and their first hydration shell. Also, a hydrogen-bonding mechanism is tested for the urea denaturation of proteins with some of these same systems. In that case, direct hydrogen bonding can be largely discounted as the key mechanism for urea stabilization of uncollapsed and/or unfolded structures.
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Affiliation(s)
- Yanjie Zhang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA
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58
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Rescia VC, Ramos HR, Takata CS, de Araujo PS, da Costa MH. Diphtheria toxoid conformation in the context of its nanoencapsulation within liposomal particles sandwiched by chitosan. J Liposome Res 2010; 21:116-23. [DOI: 10.3109/08982104.2010.491072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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59
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Lo Nostro P, Peruzzi N, Severi M, Ninham BW, Baglioni P. Asymmetric Partitioning of Anions in Lysozyme Dispersions. J Am Chem Soc 2010; 132:6571-7. [DOI: 10.1021/ja101603n] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pierandrea Lo Nostro
- Department of Chemistry and CSGI, University of Florence, 50019 Sesto Fiorentino, Florence, Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Niccolò Peruzzi
- Department of Chemistry and CSGI, University of Florence, 50019 Sesto Fiorentino, Florence, Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Mirko Severi
- Department of Chemistry and CSGI, University of Florence, 50019 Sesto Fiorentino, Florence, Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Barry W. Ninham
- Department of Chemistry and CSGI, University of Florence, 50019 Sesto Fiorentino, Florence, Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
| | - Piero Baglioni
- Department of Chemistry and CSGI, University of Florence, 50019 Sesto Fiorentino, Florence, Italy, and Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, Canberra, Australia 0200
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60
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Yeh V, Broering JM, Romanyuk A, Chen B, Chernoff YO, Bommarius AS. The Hofmeister effect on amyloid formation using yeast prion protein. Protein Sci 2010; 19:47-56. [PMID: 19890987 DOI: 10.1002/pro.281] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A variety of proteins are capable of converting from their soluble forms into highly ordered fibrous cross-beta aggregates (amyloids). This conversion is associated with certain pathological conditions in mammals, such as Alzheimer disease, and provides a basis for the infectious or hereditary protein isoforms (prions), causing neurodegenerative disorders in mammals and controlling heritable phenotypes in yeast. The N-proximal region of the yeast prion protein Sup35 (Sup35NM) is frequently used as a model system for amyloid conversion studies in vitro. Traditionally, amyloids are recognized by their ability to bind Congo Red dye specific to beta-sheet rich structures. However, methods for quantifying amyloid fibril formation thus far were based on measurements linking Congo Red absorbance to concentration of insulin fibrils and may not be directly applicable to other amyloid-forming proteins. Here, we present a corrected formula for measuring amyloid formation of Sup35NM by Congo Red assay. By utilizing this corrected procedure, we explore the effect of different sodium salts on the lag time and maximum rate of amyloid formation by Sup35NM. We find that increased kosmotropicity promotes amyloid polymerization in accordance with the Hofmeister series. In contrast, chaotropes inhibit polymerization, with the strength of inhibition correlating with the B-viscosity coefficient of the Jones-Dole equation, an increasingly accepted measure for the quantification of the Hofmeister series.
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Affiliation(s)
- Victor Yeh
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0363, USA
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61
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Schiró G, Caronna C, Natali F, Cupane A. Molecular origin and hydration dependence of protein anharmonicity: an elastic neutron scattering study. Phys Chem Chem Phys 2010; 12:10215-20. [DOI: 10.1039/c003482g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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62
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Zhang Y, Cremer PS. The inverse and direct Hofmeister series for lysozyme. Proc Natl Acad Sci U S A 2009; 106:15249-53. [PMID: 19706429 PMCID: PMC2741236 DOI: 10.1073/pnas.0907616106] [Citation(s) in RCA: 311] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2009] [Indexed: 11/18/2022] Open
Abstract
Anion effects on the cloud-point temperature for the liquid-liquid phase transition of lysozyme were investigated by temperature gradient microfluidics under a dark field microscope. It was found that protein aggregation in salt solutions followed 2 distinct Hofmeister series depending on salt concentration. Namely, under low salt conditions the association of anions with the positively charged lysozyme surface dominated the process and the phase transition temperature followed an inverse Hofmeister series. This inverse series could be directly correlated to the size and hydration thermodynamics of the anions. At higher salt concentrations, the liquid-liquid phase transition displayed a direct Hofmeister series that correlated with the polarizability of the anions. A simple model was derived to take both charge screening and surface tension effects into account at the protein/water interface. Fitting the thermodynamic data to this model equation demonstrated its validity in both the high and low salt regimes. These results suggest that in general positively charged macromolecular systems should show inverse Hofmeister behavior only at relatively low salt concentrations, but revert to a direct Hofmeister series as the salt concentration is increased.
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Affiliation(s)
- Yanjie Zhang
- Department of Chemistry, Texas A&M University, College Station, TX 77843
| | - Paul S. Cremer
- Department of Chemistry, Texas A&M University, College Station, TX 77843
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63
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Wiendahl M, Völker C, Husemann I, Krarup J, Staby A, Scholl S, Hubbuch J. A novel method to evaluate protein solubility using a high throughput screening approach. Chem Eng Sci 2009. [DOI: 10.1016/j.ces.2009.05.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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64
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Hoffmeister Series Ions Protect Diphtheria Toxoid from Structural Damages at Solvent/Water Interface. MATERIALS 2009. [PMCID: PMC5445729 DOI: 10.3390/ma2030765] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
During the W1/O phase (in the W1/O/W2 process) of protein microencapsulation within poly-lactide-co-glycolide (PLGA), hydrophobic interfaces are expanded where interfacial adsorption occurs followed by protein unfolding and aggregation. Spectroscopic and immunological techniques were used to ascertain the effects of the Hoffmeister series ions on Diphtheria toxoid (Dtxd) stability during the W1/O phase. A correlation was established between salts used in aqueous solutions and the changes in Dtxd solubility and conformation. The Dtxd α-helical content was quite stable thus leading to the conclusion that encapsulation was followed by protein aggregation, with minor exposition of hydrophobic residues and a small change at the S-S dihedral angle. Dtxd aggregation is 95% avoided by the chaotropic SCN-. This was used to prepare a stable Dtxd and immunologically recognized/PLGA formulation in the presence of 30 mM SNC-. The recovery increased by 10.42% or 23.2% when microencapsulation was within the -COOMe or -COOH (12kDa) PLGA, respectively. In conclusion, the aim of this work was achieved, which was to obtain the maximum of Dtxd stability after contact with CH2Cl2 to begin its PLGA microencapsulation within ideal conditions. This was a technological breakthrough because a simple solution like salt addition avoided heterologous proteins usage.
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65
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Pihlasalo S, Kirjavainen J, Hänninen P, Härmä H. Ultrasensitive Protein Concentration Measurement Based on Particle Adsorption and Fluorescence Quenching. Anal Chem 2009; 81:4995-5000. [DOI: 10.1021/ac9001657] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Sari Pihlasalo
- Laboratory of Biophysics and Medicity, University of Turku, Tykistökatu 6A, 20520 Turku, Finland
| | - Jonna Kirjavainen
- Laboratory of Biophysics and Medicity, University of Turku, Tykistökatu 6A, 20520 Turku, Finland
| | - Pekka Hänninen
- Laboratory of Biophysics and Medicity, University of Turku, Tykistökatu 6A, 20520 Turku, Finland
| | - Harri Härmä
- Laboratory of Biophysics and Medicity, University of Turku, Tykistökatu 6A, 20520 Turku, Finland
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66
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Nucci NV, Vanderkooi JM. Effects of Salts of the Hofmeister Series on the Hydrogen Bond Network of Water. J Mol Liq 2008; 143:160-170. [PMID: 19847287 PMCID: PMC2748947 DOI: 10.1016/j.molliq.2008.07.010] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The effect of salts on water behavior has been a topic of interest for many years; however, some recent reports have suggested that ions do not influence the hydrogen bonding behavior of water. Using an effective two-state hydrogen bonding model to interpret the temperature excursion infrared response of the O-H stretch of aqueous salt solutions, we show a strong correlation between salt effects on water hydrogen bonding and the Hofmeister order. These data clearly show that salts do have a measurable impact on the equilibrium hydrogen bonding behavior of water and support models which explain Hofmeister effects on the basis of solute charge density.
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Affiliation(s)
- Nathaniel V. Nucci
- Department of Biochemistry and Biophysics, University of Pennsylvania. 422 Curie Boulevard, Philadelphia, PA 19104, 1*(215)898-8783, fax: 1*(215)573-2085,
| | - Jane M. Vanderkooi
- Department of Biochemistry and Biophysics, University of Pennsylvania. 422 Curie Boulevard, Philadelphia, PA 19104, 1*(215)898-8783, fax: 1*(215)573-2085,
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67
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Broering JM, Bommarius AS. Kinetic Model for Salt-Induced Protein Deactivation. J Phys Chem B 2008; 112:12768-75. [DOI: 10.1021/jp7120164] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- James M. Broering
- School of Chemical and Biomolecular Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, and School of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr, Atlanta, Georgia 30332-0363
| | - Andreas S. Bommarius
- School of Chemical and Biomolecular Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, and School of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr, Atlanta, Georgia 30332-0363
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68
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Strambini GB, Gonnelli M. Specific Anions Effects of on the Stability of Azurin in Ice. J Phys Chem B 2008; 112:10255-63. [DOI: 10.1021/jp8030122] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanni B. Strambini
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, via Moruzzi 1, 56124 Pisa, Italy
| | - Margherita Gonnelli
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, via Moruzzi 1, 56124 Pisa, Italy
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69
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Miki K, Westh P, Koga Y. Interactions of Na-Salts and 1-Propanol in 1-Propanol−Na-Salt−H2O Systems: Toward an Understanding the Hofmeister Series (IV). J Phys Chem B 2008; 112:4680-6. [DOI: 10.1021/jp7113829] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kumiko Miki
- Department of Liberal Arts and Basic Sciences, College of Industrial Technology, Nihon University, Narashino, Chiba, Japan 275-8575
| | - Peter Westh
- NSM, Research Unit for Functional Biomaterials, Roskilde University, Roskilde DK-4000, Denmark
| | - Yoshikata Koga
- Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1, and Research Center for Molecular Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka, Japan 560-0043
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70
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Broering JM, Bommarius AS. Cation and strong co-solute effects on protein kinetic stability. Biochem Soc Trans 2007; 35:1602-5. [PMID: 18031274 DOI: 10.1042/bst0351602] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Degradation of proteins is important for the operating life of biocatalysts and the shelf life of protein pharmaceuticals. We have previously found that the deactivating effects of salts on proteins can be correlated to an indicator of ion hydration, the B-viscosity coefficient of the anion in solution. Here, we test the influence of cations on protein kinetic stability by observing deactivation of mRFP (monomeric red fluorescent protein) in ammonium, caesium and chloride salt solutions, and we find that mRFP deactivation does not depend on cation hydration. We also measure mRFP deactivation in solutions containing denaturants (guanidinium chloride or urea) or stabilizing co-solutes (glycerol or sucrose) frequently encountered in many protein formulations to test whether hydration of these co-solutes can be used to indicate their relative effects on protein kinetic stability. We find that mRFP deactivation in solutions containing kosmotropic salts or stabilizers reaches a limiting rate and that hydration of denaturants is not an indicator of their denaturing strength.
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Affiliation(s)
- J M Broering
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332-0363, USA
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