Linked Life Data

1864837

Source:http://linkedlifedata.com/resource/pubmed/id/1864837

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1991-9-11
pubmed:databankReference
pubmed:abstractText
A glycoprotein with Mr 63,000 purified from rat serum was found to inhibit trypsin activity but not chymotrypsin or elastase activity, resembling contrapsin purified from mouse serum. To obtain further information on the molecular structure, a cDNA clone (lambda CPi-21) for this contrapsin-like protease inhibitor was isolated from a rat liver cDNA library. The 1.6-kb cDNA insert contained an open reading frame that encodes a 416-residue polypeptide (CPi-21), in which the first 29 residues were suggested to comprise a signal peptide by comparison with the NH2-terminal sequence of the purified protein. The predicted structure also contained other peptide sequences determined by Edman degradation. Four potential N-linked glycosylation sites were found in the molecule, presumably accounting for the larger molecular mass of the mature form. Further screening of the cDNA library with a Pst-XbaI fragment (302 bp) of lambda CPi-21 as a probe yielded two other cDNA clones (lambda CPi-23 and lambda CPi-26), which encode 413-residue and 418-residue polypeptides, respectively. A comparison of their amino acid sequences revealed that CPi-21 has 89 and 71% homology with CPi-23 and CPi-26, respectively. The primary structure of each of the three proteins has about 70% homology with that of mouse contrapsin, in contrast to 43-46% homology with that of rat alpha 1-protease inhibitor. These results indicate that all the CPi proteins presented here belong to a subfamily of "serpins" of which mouse contrapsin was the first member to be identified.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0021-924X
pubmed:author
pubmed:issnType
Print
pubmed:volume
109
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
243-50
pubmed:dateRevised
2007-12-19
pubmed:meshHeading
pubmed-meshheading:1864837-Acute Disease, pubmed-meshheading:1864837-Amino Acid Sequence, pubmed-meshheading:1864837-Animals, pubmed-meshheading:1864837-Base Sequence, pubmed-meshheading:1864837-Cloning, Molecular, pubmed-meshheading:1864837-Genomic Library, pubmed-meshheading:1864837-Guinea Pigs, pubmed-meshheading:1864837-Inflammation, pubmed-meshheading:1864837-Male, pubmed-meshheading:1864837-Mice, pubmed-meshheading:1864837-Molecular Sequence Data, pubmed-meshheading:1864837-Molecular Weight, pubmed-meshheading:1864837-RNA, Messenger, pubmed-meshheading:1864837-Rats, pubmed-meshheading:1864837-Rats, Inbred Strains, pubmed-meshheading:1864837-Restriction Mapping, pubmed-meshheading:1864837-Sequence Homology, Nucleic Acid, pubmed-meshheading:1864837-Serpins, pubmed-meshheading:1864837-Trypsin Inhibitors
pubmed:year
1991
pubmed:articleTitle
Molecular cloning and characterization of rat contrapsin-like protease inhibitor and related proteins.
pubmed:affiliation
Department of Biochemistry, Fukuoka University School of Medicine.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't