Document Detail


The linkage region in the polypeptide of pig costal cartilage proteoglycan.
MedLine Citation:
PMID:  126839     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Proteoglycan from pig costal cartilage and fragments obtained by proteolytic digestion were characterized by equilibrium ultracentrifugation and amino acid analysis. The proteoglycan extractable in 4 M guanidinium chloride yielded, after proteolytic digestion with trypsin and chymotrypsin, a chondroitin sulfate peptide containing four chains of polysaccharide. The unextractable residue yielded chondroitin sulfate peptide containing only two chains. The amino acid composition indicated a fairly uniform spacing between all four chains with an average of eight amino acid residues between the serine residues involved in linkage. Following the alkaline sulfite elimination-addition reaction, free peptide was isolated and found to contain one unsubstituted serine residue for every two linked glycosidically. Glycine and glutamic acid were the only two amino acids sufficiently abundant to be part of an invariant sequence near to serine residues destined to be glycosylated. The linkage region of the polypeptide also contains some substituted serine residues which do not carry a full chondroitin sulfate chain.
Authors:
F S Wusteman; E A Davidson
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Connective tissue research     Volume:  3     ISSN:  0300-8207     ISO Abbreviation:  Connect. Tissue Res.     Publication Date:  1975  
Date Detail:
Created Date:  1976-01-26     Completed Date:  1976-01-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0365263     Medline TA:  Connect Tissue Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  123-33     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Amino Acid Sequence
Amino Acids / analysis
Animals
Cartilage* / analysis
Chondroitin / analogs & derivatives*
Chondroitin Sulfates* / analysis
Chymotrypsin
Glycosaminoglycans*
Molecular Weight
Peptides / analysis
Protein Conformation
Proteoglycans* / analysis
Serine / analysis
Swine
Trypsin
Xylose / analysis
Chemical
Reg. No./Substance:
0/Amino Acids; 0/Glycosaminoglycans; 0/Peptides; 0/Proteoglycans; 0/Xylose; 56-45-1/Serine; 9007-27-6/Chondroitin; 9007-28-7/Chondroitin Sulfates; EC 3.4.21.1/Chymotrypsin; EC 3.4.21.4/Trypsin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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