Sequence of a cDNA coding for human glutathione peroxidase confirms TGA encodes active site selenocysteine

The authors have isolated a cdNA coding the human enzyme from a kidney library in lambda gt10 by cross-hybridization with a bovine cDNA; 24 of 5300 clones hybridized with the probe. The active site selenocysteine residue (-CH sub(2) SeH) at position 47 (i.e. SeC) is encoded by the nonsense codon, TG...

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Veröffentlicht in:Nucleic acids research 1987-07, Vol.15 (13), p.5484-5484
Hauptverfasser: MULLENBACH, G. T, TABRIZI, A, IRVINE, B. D, BELL, G. I, HALLEWELL, R. A
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container_end_page 5484
container_issue 13
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container_title Nucleic acids research
container_volume 15
creator MULLENBACH, G. T
TABRIZI, A
IRVINE, B. D
BELL, G. I
HALLEWELL, R. A
description The authors have isolated a cdNA coding the human enzyme from a kidney library in lambda gt10 by cross-hybridization with a bovine cDNA; 24 of 5300 clones hybridized with the probe. The active site selenocysteine residue (-CH sub(2) SeH) at position 47 (i.e. SeC) is encoded by the nonsense codon, TGA, as is similarly observed in the mouse gene. Interestingly evidence suggests that the selenium atom is incorporated cotranslationally rather than via a posttranslational modification step. This clone possesses 5 bp of the 5'-untranslated region, the 603 bp coding region, 223 bp to the 3'-untranslated region and a canonical polyadenylation signal, AATAAA, upstream of the polyA tract. The amino acid sequence reveals the protein possesses approximately 87% and 85% homology with preprocessed bovine and mouse enzymes, respectively.
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Interestingly evidence suggests that the selenium atom is incorporated cotranslationally rather than via a posttranslational modification step. This clone possesses 5 bp of the 5'-untranslated region, the 603 bp coding region, 223 bp to the 3'-untranslated region and a canonical polyadenylation signal, AATAAA, upstream of the polyA tract. The amino acid sequence reveals the protein possesses approximately 87% and 85% homology with preprocessed bovine and mouse enzymes, respectively.</abstract><cop>Oxford</cop><pub>Oxford University Press</pub><pmid>2955287</pmid><doi>10.1093/nar/15.13.5484</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record>
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subjects Amino Acid Sequence
Base Sequence
Binding Sites
Biological and medical sciences
cDNA
Cysteine - analogs & derivatives
Cysteine - analysis
DNA - analysis
Fundamental and applied biological sciences. Psychology
Genes
Genes. Genome
glutathione peroxidase
Glutathione Peroxidase - genetics
Humans
Molecular and cellular biology
Molecular genetics
nucleotide sequence
Selenium - analysis
Selenocysteine
title Sequence of a cDNA coding for human glutathione peroxidase confirms TGA encodes active site selenocysteine
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