Molecular cloning of the cDNA and chromosomal gene for vitamin D-dependent calcium-binding protein of rat intestine.

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Abstract
A cDNA encoding the vitamin D-dependent rat intestinal calcium-binding protein has been isolated by screening a rat intestinal cDNA library. The cDNA is 406 nucleotides long and appears to contain all the sequences of the mRNA. The cDNA includes the entire protein coding region. It consists of 237 nucleotides coding for 79 amino acids, including the starting methionine, flanked by 62 and 107 noncoding nucleotides at the 5'' and 3'' ends, respectively. Using the cloned cDNA, we have isolated a genomic clone from a rat liver genomic library. Restriction mapping and Southern analysis using synthetic oligonucleotides localized the gene to a 4.0-kilobase-pair HindIII fragment.