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Gene Review:

nodU - nodulation protein NodU

Sinorhizobium fredii NGR234

Göttfert, M. et al., Lewin, A. et al., Jabbouri, S. et al., Jabbouri, S. et al.

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Disease relevance of nodU

Involvement of nodS in N-methylation and nodU in 6-O-carbamoylation of Rhizobium sp. NGR234 nod factors [1].
Identification of nodS and nodU, two inducible genes inserted between the Bradyrhizobium japonicum nodYABC and nodIJ genes [2].

High impact information on nodU

Since mutation of both nolO and nodU fails to completely abolish production of monocarbamoylated NodNGR factors, it is clear that a third carbamoyltransferase must exist [3].
NodU is only able to transfer carbamate to O-6 while NolO is specific for O-3 (or O-4) of NodNGR factors [3].

Biological context of nodU

Determination of the nucleotide sequence of the nodS gene did not reveal homology with any gene in the EMBL library, although Bradyrhizobium japonicum USDA110 contains both nodS and nodU (M. Göttfert, S. Hitz, and H. Hennecke, Molecular Plant-Microbe Interactions 3:308-316, 1990) [4].

Associations of nodU with chemical compounds

Using translational fusions of lacZ to nodC, nodS, and nodU, the expression of these genes was shown to be inducible by the isoflavone daidzein and depended on transcription from a DNA region farther upstream [2].

References

Involvement of nodS in N-methylation and nodU in 6-O-carbamoylation of Rhizobium sp. NGR234 nod factors. Jabbouri, S., Fellay, R., Talmont, F., Kamalaprija, P., Burger, U., Relić, B., Promé, J.C., Broughton, W.J. J. Biol. Chem. (1995) [Pubmed]
Identification of nodS and nodU, two inducible genes inserted between the Bradyrhizobium japonicum nodYABC and nodIJ genes. Göttfert, M., Hitz, S., Hennecke, H. Mol. Plant Microbe Interact. (1990) [Pubmed]
nolO and noeI (HsnIII) of Rhizobium sp. NGR234 are involved in 3-O-carbamoylation and 2-O-methylation of Nod factors. Jabbouri, S., Relić, B., Hanin, M., Kamalaprija, P., Burger, U., Promé, D., Promé, J.C., Broughton, W.J. J. Biol. Chem. (1998) [Pubmed]
nodSU, two new nod genes of the broad host range Rhizobium strain NGR234 encode host-specific nodulation of the tropical tree Leucaena leucocephala. Lewin, A., Cervantes, E., Chee-Hoong, W., Broughton, W.J. Mol. Plant Microbe Interact. (1990) [Pubmed]

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