BiomedExperts: Sequence features surrounding the translation initiation sites assigned on the genome sequence of Synechocystis sp. strain PCC6803 by amino-terminal protein sequencing.

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1996: Sazuka T; Ohara O
Sequence features surrounding the translation initiation sites assigned on the genome sequence of Synechocystis sp. strain PCC6803 by amino-terminal protein sequencing.
DNA research : an international journal for rapid publication of reports on genes and genomes 1996;3(4):225-32.

To characterize the sequence features surrounding the translation initiation sites on the genome of Synechocystis sp. strain 6803, the total proteins extracted from the cell were resolved by two-dimensional electrophoresis, and the amino-terminal sequences of the relatively abundant protein spots were determined. By comparison of the determined amino-terminal sequences with the nucleotide sequence of the entire genome, the translation initiation sites of a total of 72 proteins were successfully assigned on the genome. The sequence features emerged from the nucleotide sequences at and surrounding the translation initiation sites were as follows: (1) In addition to the three initiation codons, ATG, GTG, and TTG, evidence was obtained that ATT was also used as a rare initiation codon; (2) the core sequences (GAGG, GGAG and AGGA) of the Shine-Dalgarno sequence were identified in the appropriate position preceding the 35 initiation sites (48.6%); and (3) the preferential sequence surrounding the initiation codons was formulated as 5'-YY[...]R-3' where Y and R denote pyrimidine and purine nucleotides, respectively, and three dots represent the initiation codons. The result obtained would provide valuable information for improvement of the gene-finding software, and the approach used in this study should be applicable for comprehensive analysis of the expression profiles of cellular proteins.

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