Nucleotide sequence of the coding portion of human alpha globin messenger RNA
- PMID: 6244294
Nucleotide sequence of the coding portion of human alpha globin messenger RNA
Abstract
The nucleotide sequence of the coding portion of human alpha globin mRNA has been determined by sequence analysis using human alpha globin cDNA cloned in bacterial plasmids. The sequence was obtained by a combination of direct sequence analysis of the cloned cDNA and analysis of cDNA obtained by primer extension, using short restriction endonuclease fragments of cloned alpha cDNA that were hybridized to human globin mRNA and elongated on the mRNA template by viral reverse transcriptase. The human alpha globin mRNA has an unexpectedly high G + C base composition (64.7%), similar to that observed for rabbit globin alpha mRNA, and displays a striking bias in the use of synonym codons for various amino acids. The bias in codon usage of human alpha globin mRNA is similar, with some exceptions, to that previously observed for rabbit alpha globin mRNA as well as for human and rabbit beta globin mRNAs. A detailed restriction endonuclease map of the human alpha globin cDNA is presented.
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