The Availability of the Disulfide Bonds of Human and Bovine Serum Albumin and of Bovine γ-Globulin to Reduction by Thioglycolic Acid

1957 ◽  
Vol 79 (15) ◽  
pp. 4096-4099 ◽  
Author(s):  
Ephraim Katchalski ◽  
George S. Benjamin ◽  
Violet Gross
1989 ◽  
Vol 28 (7) ◽  
pp. 1321-1326 ◽  
Author(s):  
Anvarhusein A. Isab ◽  
Anne L. Hormann ◽  
David T. Hill ◽  
Don E. Griswold ◽  
Michael J. DiMartino ◽  
...  

Author(s):  
Akshay Mathavan ◽  
Akash Mathavan ◽  
Michael Fortunato ◽  
Coray Colina

A fully-atomistic molecular dynamics study was performed to determine the importance of disulfide bonds on the stability of immunoglobulin G (IgG) and bovine serum albumin (BSA).The transferability of a previous prescreening methodology to assess contributions from individual disulfide bonds on conformational stability was tested on both proteins. In IgG, it was apparent that inter-chain and intra-chain disulfide bonds play different roles in maintaining structure, evidenced by clear separation of inter-chain cysteine residues upon cleavage of disulfide bonds. In BSA, a set of double disulfide bonds required both to be broken in order to observe significant structural changes, equivalently seen in a previous study of human serum albumin (HSA), a structurally similar protein. Structural analysis of IgG showed deviations in distances between domains, while analysis of BSA suggested more local structural changes. This work helps confirm the efficacy and reproducibility of the prescreening methodology on both a novel, larger protein such as IgG and a more homologous (to HSA), globular protein such as BSA. The results provide insight into the role of specific disulfide bonds in the stability of IgG and BSA. KEYWORDS: Molecular Dynamics; Atomistic Simulations; Immunoglobulin G; Bovine Serum Albumin; Disulfide Bonds


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