Cloning and nucleotide sequence of the ptsG gene of Bacillus subtilis |
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Authors: | M. Zagorec and P. W. Postma |
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Affiliation: | (1) E.C. Slater Institute for Biochemical Research, University of Amsterdam, Plantage Muidergracht 12, NL-1018 TV Amsterdam, The Netherlands |
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Abstract: | Summary The ptsG gene of Bacillus subtilis encodes Enzyme IIG1c of the phosphoenolpyruvate: glucose phosphotransferase system. The 3 end of the gene was previously cloned and the encoded polypeptide found to resemble the Enzymes IIIGlc of Escherichia coli and Salmonella typhimurium. We report here cloning of the complete ptsG gene of B. subtilis and determination of the nucleotide sequence of the 5 end. These results, combined with the sequence of the 3 end of the gene, revealed that ptsG encodes a protein consisting of 699 amino acids and which is similar to other Enzymes II. The N-terminal domain contains two small additional fragments, which share no similarities with the closely related Enzymes IIGlc and IINag of E. coli but which are present in the IIG1c-like protein encoded by the E. coli malX gene. |
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Keywords: | Glucose permease Bacillus subtilis Phosphotransferase system ptsG Enzyme IIGlc |
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