PMID: 6412776Jul 1, 1983Paper

Isolation and some physico-chemical properties of a new neurospecific protein 10-40-4 from human brain

Biokhimii︠a︡
T P Kliushnik, G Sh Burbaeva

Abstract

A method for isolation of a neurospecific protein 10-40-4 from human brain has been elaborated. This procedure includes immunoaffinity chromatography of a Sepharose 4B-IgG fraction of rabbit antisera against the protein fraction containing the antigen. The isolated protein cannot be detected in protein extracts of various organs and human blood serum by immunochemical methods. This indicates that the protein is specific for nervous tissue. The values of molecular weight (74 000) and pI (4.7) of the isolated protein suggest that the protein does not contain the carbohydrate component and reveals limited tissue specificity. The properties of protein 10-40-4 differ from those of the well-known neurospecific proteins, such as S-100, enolase 14-3-2 and glial fibrillar acid protein GFA.

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