TITLE

Unique Features of Chinese Hamster S13 Gene Relative to Its Human and Xenopus Analogs

AUTHOR(S)
Chen, Ming-Shun; Laszlo, Andrei
PUB. DATE
June 1999
SOURCE
DNA & Cell Biology;Jun99, Vol. 18 Issue 6, p463
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have cloned and sequenced the ribosomal protein S13 gene from the Chinese hamster fibroblast HA-1 cells. The predicted protein encoded by this gene is identical to the human ribosomal protein S13, except for one amino acid substitution at residue 29, which is an alanine in the hamster protein and a threonine in that of humans. The physical organization of the six exons and five introns in the hamster S13 gene is also identical to that found in the human and Xenopus genes with respect to the amino acid codes, even though there are small differences in the lengths of the introns. The striking feature is that unlike its human and Xenopus counterparts, which encode two U14 snoRNAs in two separate introns, the hamster S13 gene encodes no U14 snoRNA. Instead, the hamster gene has a pseudo-U14 coding sequence in its third intron. Our data support the idea that the single copy of the hsc70/U14 gene, which we had previously characterized, is the only source for the production of both U14 snoRNA and hsc70 mRNA species in hamster HA-1 cells.
ACCESSION #
6463030

 

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