A mutation in Escherichia coli K-12 results in a requirement for thiamine and a decrease in L-serine deaminase activity.
AUTOR(ES)
Newman, E B
RESUMO
Mutants of Escherichia coli K-12 deficient in L-serine deaminase (L-SD) activity have been isolated. These strains required thiamine and grew normally when it was provided. The decrease in L-SD activity caused no obvious metabolic deficiency. A study of revertants and transductants showed that a single mutation was responsible for the thiamine requirement and for the decrease in L-SD activity.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=214867Documentos Relacionados
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