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Eur J Immunol. 1986 Dec;16(12):1583-9.

Biochemical characterization of a soluble form of the 53-kDa monocyte surface antigen.

Abstract

Two monoclonal antibodies, MEM-15 and MEM-18, were prepared which recognize a monocyte 53-kDa antigen. A soluble form of this antigen was found in most normal sera and in urine of some nephrotic patients. Milligram amounts of this glycoprotein were isolated by immunoaffinity chromatography from urine and used for quantitative amino acid and carbohydrate analysis and N-terminal amino acid sequencing. The reactivity of the isolated antigen with several previously described monoclonal antibodies indicates that it is the antigen previously called MY-4 or MY-23. A significant homology exists between the sequenced N-terminal portion of the antigen and sequences found in the kinase-related transforming protein src and in the precursor of epidermal growth factor.

PMID:
3493149
DOI:
10.1002/eji.1830161218
[Indexed for MEDLINE]

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