N protein

1. Antiterminator protein of the bacteriophage _ and other phages that plays a key role in the early stages of infection. During the early phase, only two genes N and cro are transcribed, by transcription of the DNA in opposite directions. N protein binds to sites on the DNA (nut sites for N utilisation), prevents rho dependent termination and allows transcription of the genes.

2. Name was once used for GTP-binding proteins G-proteins), now obsolete and should be avoided because of confusion with N protein of bacteriophages.

(18 Nov 1997)


Terms mentioned in text: protein, bacteriophage, phages, key, role, early, stages, infection, phase, genes, cro, transcription, dna, opposite, n protein, binds, sites, nut, rho, dependent, termination, genes, name, obsolete, confusion, n protein, bacteriophages
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