OPEN READING FRAMES FLANKING THE PEPTIDYL-TRANSFER-RNA HYDROLASE-ENCODING GENE OF ESCHERICHIA-COLI

被引:3
作者
GALINDO, JM [1 ]
GUARNEROS, G [1 ]
DELAVEGA, FM [1 ]
机构
[1] INST POLITECN NACL,CTR INVEST & ESTUDIOS AVANZADOS,DEPT MOLEC BIOL & GENET,MEXICO CITY 07000,DF,MEXICO
关键词
GTP-BINDING MOTIF; PTH GENE; CAP-BINDING SITE; PRS GENE; SEQUENCING; MAXICELL; BACTERIOPHAGE-LAMBDA; TRANSLATION;
D O I
10.1016/0378-1119(94)90647-5
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
The nucleotide (nt) sequences flanking the peptidyl-tRNA hydrolase-encoding gene (pth) of Escherichia coli were determined and analyzed. A coding open reading frame (ORF-3), identified just downstream from pth, had a deduced amino acid (aa) sequence homologous to a family of GTP-binding proteins. We found discrepancies between the ORF-3 sequence from a plasmid clone used in previous studies and another one derived from Kohara's phage collection. Two putative genes, ORF-4 and ORF-2, were also found upstream from pth. ORF-4 could code for a 393-aa peptide homologous to membrane-bound proteins. The nt sequence between ORF-2 and pth revealed the existence of a CAP-binding site correctly positioned to regulate the expression of ORF-2.
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页码:153 / 156
页数:4
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