Mutants That Produce Nitrogenase in the Presence of Ammonia
AUTOR(ES)
Gordon, Joyce K.
RESUMO
Mutants of Azotobacter vinelandii that fix N2 in the presence of excess NH4+ have been isolated. A mutant that was unable to synthesize component I and component II of nitrogenase was spontaneously reverted to the N2-fixing phenotype. Of 21 revertants picked, 7 revertants were not as sensitive as the wild type to repression. A derepressed mutant is as sensitive as the wild type to growth inhibition by 2-methylalanine in the presence of glucose.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=389805Documentos Relacionados
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