Abstract
Proalbumin Christchurch, a circulating variant of human serum albumin, is secreted from the liver without cleavage of the hexapeptide situated at the N-terminal end of the peptide chain of proalbumin. We compared ligand-binding properties of proalbumin Christchurch and of normal albumin A from the same individual in order to test the effect of the presence of the hexapeptide. The two albumin forms exhibited similar affinities for palmitate, bilirubin, 8-anilinonaphthalene-1-sulphonate and Bromocresol Green. The patterns of endogenous fatty acids bound to the two forms of albumin were slightly different, although the differences were probably not of physiological significance. From these studies it would appear that the propeptide of proalbumin does not alter the protein conformation in such a way as to alter binding sites for organic anions.
Full text
PDF


Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Brennan S. O., Carrell R. W. A circulating variant of human proalbumin. Nature. 1978 Aug 31;274(5674):908–909. doi: 10.1038/274908a0. [DOI] [PubMed] [Google Scholar]
- Brennan S. O., Carrell R. W. Functional abnormality of proalbumin Christchurch. Biochim Biophys Acta. 1980 Jan 24;621(1):83–88. doi: 10.1016/0005-2795(80)90064-1. [DOI] [PubMed] [Google Scholar]
- Brodersen R. Bilirubin. Solubility and interaction with albumin and phospholipid. J Biol Chem. 1979 Apr 10;254(7):2364–2369. [PubMed] [Google Scholar]
- Doumas B. T. Standards for total serum protein assays--a collaborative study. Clin Chem. 1975 Jul;21(8):1159–1166. [PubMed] [Google Scholar]
- Patterson J. E., Geller D. M. Bovine microsomal albumin: amino terminal sequence of bovine proalbumin. Biochem Biophys Res Commun. 1977 Feb 7;74(3):1220–1226. doi: 10.1016/0006-291x(77)91648-5. [DOI] [PubMed] [Google Scholar]
- Peters T., Jr, Reed R. G. The biosynthesis of rat serum albumin. Composition and properties of the intracellular precursor, proalbumin. J Biol Chem. 1980 Apr 10;255(7):3156–3163. [PubMed] [Google Scholar]
- Reed R. G., Feldhoff R. C., Clute O. L., Peters T., Jr Fragments of bovine serum albumin produced by limited proteolysis. Conformation and ligand binding. Biochemistry. 1975 Oct 21;14(21):4578–4583. doi: 10.1021/bi00692a004. [DOI] [PubMed] [Google Scholar]
- Reed R. G., Gates T., Peters T. Albumin immobilized on agarose as a tool for measuring ligand binding of proteins or peptides. Anal Biochem. 1975 Dec;69(2):361–371. doi: 10.1016/0003-2697(75)90138-4. [DOI] [PubMed] [Google Scholar]
- Russell J. H., Geller D. M. The structure of rat proalbumin. J Biol Chem. 1975 May 10;250(9):3409–3413. [PubMed] [Google Scholar]
- Spector A. A. Fatty acid binding to plasma albumin. J Lipid Res. 1975 May;16(3):165–179. [PubMed] [Google Scholar]
- WALSH K. A., NEURATH H. TRYPSINOGEN AND CHYMOTRYPSINOGEN AS HOMOLOGOUS PROTEINS. Proc Natl Acad Sci U S A. 1964 Oct;52:884–889. doi: 10.1073/pnas.52.4.884. [DOI] [PMC free article] [PubMed] [Google Scholar]
