RGD Reference Report - Correlation of gene and protein structure of rat and human lipocortin I. - Rat Genome Database

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Correlation of gene and protein structure of rat and human lipocortin I.

Authors: Kovacic, RT  Tizard, R  Cate, RL  Frey, AZ  Wallner, BP 
Citation: Kovacic RT, etal., Biochemistry 1991 Sep 17;30(37):9015-21.
RGD ID: 632207
Pubmed: PMID:1832554   (View Abstract at PubMed)

Lipocortins (annexins) are a family of calcium-dependent phospholipid-binding proteins with phospholipase A2 inhibitory activity. The characteristic primary structure of members of this family consists of a core structure of four or eight repeated domains, which have been implicated in calcium-dependent phospholipid binding. In two lipocortins (I and II) a short amino-terminal sequence distinct from the core structure has potential regulatory functions which are dependent on its phosphorylation state. We have isolated the rat and the human lipocortin I genes and found that they both consist of 13 exons with a striking conservation of their exon-intron structure and their promoter and amino acid sequences. Both lipocortin I genes are at least 19 kbp in length with exons ranging from 57 to 123 bp interrupted by introns as large as 5 kbp. Each of the four repeat units of lipocortin I are encoded by two consecutive exons while individual exons code for the highly conserved putative calcium-binding domains. The promoter sequences in the rat and in human genes are highly conserved and contain nucleotide sequences characterized as enhancer sequences in other genes. The structure of the lipocortin I gene lends support to the hypothesis that the lipocortin genes arose by a duplication of a single domain.

Objects referenced in this article
Gene Anxa1 annexin A1 Rattus norvegicus

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