| Literature DB >> 3027131 |
L J Weisberg, D T Shiu, C S Greenberg, Y W Kan, M A Shuman.
Abstract
Factor XIII, the clotting factor essential for covalent stabilization of the fibrin clot, is a heterodimer consisting of a2 and b2 subunits, with catalytic function residing in the a-chain. In order to address questions regarding sites of synthesis and chromosomal localization of the Factor XIII a-chain, cDNA was cloned from a lambda gt11 human placental cDNA library. Nucleotide and amino acid sequences were determined from the cDNA. Amino acid sequencing of purified platelet Factor XIII a-chains confirmed the authenticity of the lambda gt11 clone. The gene for Factor XIII a-chain was mapped uniquely to chromosome 6. Northern blot analysis of human placental and U937 (monocytelike) cell poly (A)+ mRNA showed a single approximately 4.0-kb message for the Factor XIII a-chain. These results provide conclusive evidence that the a-chain is synthesized by placenta and monocyte cell lines.Entities:
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Year: 1987 PMID: 3027131 PMCID: PMC424157 DOI: 10.1172/JCI112862
Source DB: PubMed Journal: J Clin Invest ISSN: 0021-9738 Impact factor: 14.808