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Table 6 Comparison of sulfur metabolism deduced from the genomes of L. hongkongensis, N. meningitidis, N. gonorrhoeae, C. violaceum, E. coli and C. jejuni

From: General metabolism of Laribacter hongkongensis: a genome-wide analysis

Pathway/enzyme Gene(s) L. hongkongensis HLHK9 C. violaceum ATCC 12472 N. gonorrhoeae FA 1090 N. meningitidis MC58 E. coli K12 MG1655 C. jejuni NCTC 11168
Sulfate assimilation        
   sulfate adenylyltransferase cysD, cysN + + - + + +
   APS kinase cysC - + - - + +
   PAPS reductase cysH a - ?b - - + -
   APS reductase cysH a + ?b - + - -
   Sulfite reductase cysI, cysJ + + + + + -
Sulfate transport        
   ATP binding protein CysA cysA + + + + + -
   Permease protein CysU cysU + + + + + -
   Permease protein CysW cysW + + + + + -
   Sulfate binding protein CysP cysP + + + + + -
  1. aBacterial PAPS reductase and APS reductase are highly homologous and both of their gene designation are cysH which may represent a PAPS reductase or APS reductase [58].
  2. bPredicted amino acid sequences encoded by cysH (CV_3574) in C. violaceum has the characteristic two-cysteine motifs of APS reductase and the presence of cysC suggests an ambiguity (represent by "?") in the identity of CV_3574 as PAPS or APS reductase.