Primary Citation of Related Structures: 1AO6, 1BM0
PubMed Abstract:
A new triclinic crystal form of human serum albumin (HSA), derived either from pool plasma (pHSA) or from a Pichia pastoris expression system (rHSA), was obtained from polyethylene glycol 4000 solution. Three-dimensional structures of pHSA and rHSA were determined at 2 ...
A new triclinic crystal form of human serum albumin (HSA), derived either from pool plasma (pHSA) or from a Pichia pastoris expression system (rHSA), was obtained from polyethylene glycol 4000 solution. Three-dimensional structures of pHSA and rHSA were determined at 2.5 A resolution from the new triclinic crystal form by molecular replacement, using atomic coordinates derived from a multiple isomorphous replacement work with a known tetragonal crystal form. The structures of pHSA and rHSA are virtually identical, with an r.m. s. deviation of 0.24 A for all Calpha atoms. The two HSA molecules involved in the asymmetric unit are related by a strict local twofold symmetry such that the Calpha atoms of the two molecules can be superimposed with an r.m.s. deviation of 0.28 A in pHSA. Cys34 is the only cysteine with a free sulfhydryl group which does not participate in a disulfide linkage with any external ligand. Domains II and III both have a pocket formed mostly of hydrophobic and positively charged residues and in which a very wide range of compounds may be accommodated. Three tentative binding sites for long-chain fatty acids, each with different surroundings, are located at the surface of each domain.
Related Citations:
Structure of Serum Albumin Carter, D.C., Ho, J.X. (1994) Adv Protein Chem 45: 153
Preliminary Crystallographic Studies of Four Crystal Forms of Serum Albumin Carter, D.C., Chang, B., Ho, J.X., Keeling, K., Krishnasami, Z. (1994) Eur J Biochem 226: 1049
Erratum. Atomic Structure and Chemistry of Human Serum Albumin He, X.M., Carter, D.C. (1993) Nature 364: 362
Atomic Structure and Chemistry of Human Serum Albumin He, X.M., Carter, D.C. (1992) Nature 358: 209
Structure of Human Serum Albumin Carter, D.C., He, X.M. (1990) Science 249: 302
Three-Dimensional Structure of Human Serum Albumin Carter, D.C., He, X.M., Munson, S.H., Twigg, P.D., Gernert, K.M., Broom, M.B., Miller, T.Y. (1989) Science 244: 1195
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