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Table 7 Comparison of nitrogen 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

Enzyme Gene(s) L. hongkongensis HLHK9 C. violaceum
ATCC 12472
N. gonorrhoeae
FA 1090
N. meningitidis MC58 E. coli K12
MG 1655
C. jejuni NCTC 11168
Glutamate dehydrogenase gdhA + - + + + -
Glutamate synthase gltB/gltD + + - - + +
Glutamine synthetase glnA + + + + + +
Nitrate reductase        
   Membrane-bound Nar type narGHJI a - + - - + -
   Periplamsic Nap type napABCD b + napA only - - + +
Nitrite reductase nrfA/nifB/
aniA/nirK
- + + + + -
Nitric oxide reductase norB - + + + - -
Urease ureABC c + - - - - -
  1. aThe basic gene components for membrane-bound type nitrate reductase to be regarded as functional [68]
  2. bThe basic gene components for periplasmic type nitrate reductase to be regarded as functional [68]
  3. cThe basic gene components for urease to be regarded as functional [77]