RGD Reference Report - Molecular cloning and sequence analysis of the cDNA encoding rat liver cysteine sulfinate decarboxylase (CSD). - Rat Genome Database

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Molecular cloning and sequence analysis of the cDNA encoding rat liver cysteine sulfinate decarboxylase (CSD).

Authors: Reymond, I  Sergeant, A  Tappaz, M 
Citation: Reymond I, etal., Biochim Biophys Acta 1996 Jun 7;1307(2):152-6.
RGD ID: 632598
Pubmed: PMID:8679699   (View Abstract at PubMed)

The taurine biosynthesis enzyme, cysteine sulfinate decarboxylase (CSD), was purified to homogeneity from rat liver. Three CSD peptides generated by tryptic cleavage were isolated and partially sequenced. Two of them showed a marked homology with glutamate decarboxylase and their respective position on the CSD amino acid sequence was postulated accordingly. Using appropriate degenerated primers derived from these two peptides, a PCR amplified DNA fragment was generated from liver poly(A)+ mRNA, cloned and used as a probe to screen a rat liver cDNA library. Three cDNAs, length around 1800 bp, were isolated which all contained an open reading frame (ORF) encoding a 493 amino acid protein with a calculated molecular mass of 55.2 kDa close to the experimental values for CSD. The encoded protein contained the sequence of the three peptides isolated from homogenous liver CSD. Our data confirm and significantly extend those recently published (Kaisaki et al. (1995) Biochim. Biophys. Acta 1262, 79-82). Indeed, an additional base pair found 1371 bp downstream from the initiation codon led to a shift in the open reading frame which extended the carboxy-terminal end by 15 amino acid residues and altogether modified 36 amino acids. The validity of this correction is supported by the finding that the corrected reading frame encoded a peptide issued from CSD tryptic cleavage that was not encoded anywhere in the CSD sequence previously reported.



Objects referenced in this article
Gene Csad cysteine sulfinic acid decarboxylase Rattus norvegicus

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