RGD Reference Report - Mannose-binding proteins isolated from rat liver contain carbohydrate-recognition domains linked to collagenous tails. Complete primary structures and homology with pulmonary surfactant apoprotein. - Rat Genome Database

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Mannose-binding proteins isolated from rat liver contain carbohydrate-recognition domains linked to collagenous tails. Complete primary structures and homology with pulmonary surfactant apoprotein.

Authors: Drickamer, K  Dordal, MS  Reynolds, L 
Citation: Drickamer K, etal., J Biol Chem 1986 May 25;261(15):6878-87.
RGD ID: 633272
Pubmed: PMID:3009480   (View Abstract at PubMed)

Preparations of mannose-binding protein isolated from rat liver contain two distinct but homologous polypeptides. The complete primary structures of both of these polypeptides have been determined by sequencing of peptides derived from the proteins, isolation and sequencing of cDNAs for both proteins, and partial characterization of the gene for one of the proteins. Each polypeptide consists of three regions: (a) an NH2-terminal segment of 18-19 amino acids which is rich in cysteine and appears to be involved in the formation of interchain disulfide bonds which stabilize dimeric and trimeric forms of the protein, (b) a collagen-like domain consisting of 18-20 repeats of the sequence Gly-X-Y and containing 4-hydroxyproline residues in several of the Y positions, and (c) a COOH-terminal carbohydrate-binding domain of 148-150 amino acids. The sequences of the COOH-terminal domains are highly homologous to the sequence of the COOH-terminal carbohydrate-recognition portion of the chicken liver receptor for N-acetylglucosamine-terminated glycoproteins and the rat liver asialoglycoprotein receptor. Each protein is preceded by a cleaved, NH2-terminal signal sequence, consistent with the finding that this protein is found in serum as well as in the liver. The entire structure of the mannose-binding proteins is homologous to dog pulmonary surfactant apoprotein.



Objects referenced in this article
Gene Mbl1 mannose binding lectin 1 Rattus norvegicus
Gene Mbl2 mannose binding lectin 2 Rattus norvegicus

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