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- W2287486883 abstract "An 18.5-kb human DNA segment was selected from a human XCharon-4A library by hybridization to mammalian valine tRNAiAc and found to encompass a cluster of three tRNA genes. Two valine tRNA genes with anticodons of AAC and CAC, encoding the major and minor cytoplasmic valine tRNA isoacceptors, respectively, and a lysine tRNAcuu gene were identified by Southern blot hybridization and DNA sequence analysis of a 7.1-kb region of the human DNA insert. At least nine Alu family members were found interspersed throughout the human DNA fragment. The tRNA genes are accurately transcribed by RNA polymerase III in a HeLa cell extract, since the RNase Ti fingerprints of the mature-sized tRNA transcription products are consistent with the DNA sequences of the structural genes. Three members of the chimpanzee triosephosphate isomerase (TPI) gene family, the functional transcription unit and two processed pseudogenes, were characterized by genomic blotting and DNA sequence analysis. The bona fide TPI gene spans 3.5 kb with seven exons and six introns, and is the first complete hominoid TPI gene sequenced. The gene exhibits a very high identity with the human and rhesus TPI genes. In particular, the polypeptides of 248 amino acids encoded by the chimpanzee and human TPI genes are identical, although the two coding regions differ in the third codon wobble positions for five amino acids. An Alu member occurs upstream from one of the processed pseudogenes, whereas an isolated endogenous retroviral long terminal repeat (HERV-K) occurs within the structural region of the other processed pseudogene. The ages of the processed pseudogenes were estimated to be 2.6 and 10.4 million years, implying that one was inserted into the genome before the divergence of the chimpanzee and human lineages, and the other inserted into the chimpanzee genome after the divergence." @default.
- W2287486883 created "2016-06-24" @default.
- W2287486883 creator A5014844285 @default.
- W2287486883 date "1990-08-01" @default.
- W2287486883 modified "2023-09-26" @default.
- W2287486883 title "Analysis of a Human Transfer RNA Gene Cluster and Characterization of the Transcription Unit and Two Processed Pseudogenes of Chimpanzee Triosephosphate Isomerase" @default.
- W2287486883 hasPublicationYear "1990" @default.
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