Nucleotide sequence of the alkaline phosphatase gene of Escherichia coli.
[No authors listed]
摘要
The nucleotide sequence of the alkaline phosphatase (APase) gene (phoA) of Escherichia coli strain 294 has been determined. Pre-APase has a total of 471 amino acids (aa) including a signal sequence of 21 aa. The derived aa sequence differs from that obtained by protein sequencing by the presence of aspartic acid instead of asparagine at positions 16 and 36, and glutamic acid instead of glutamine at position 197. Two open reading frames (ORF1 and ORF2) located downstream from phoA or upstream from proC have been found. ORF1 encodes a putative presecretory protein of 106 aa with a signal sequence of 21 or 22 aa. If this protein is actually produced, it may be one of the smallest periplasmic proteins in E. coli.
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基因功能
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原始数据
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文献解读
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