“维生素B6对照”突变体培养基中存在的维生素B6形式的鉴定。
Identification of the forms of vitamin B 6 present in the culture media of "vitamin B 6 control" mutants.
作者信息
Dempsey W B, Arcement L J
出版信息
J Bacteriol. 1971 Aug;107(2):580-2. doi: 10.1128/jb.107.2.580-582.1971.
Abstract
An Escherichia coli mutant resistant to isoniazid (WG497) contained 0.6 mumole of extracellular pyridoxamine and pyridoxamine phosphate in the early stationary phase. A suppressed lysine mutant (AT1024) contained 1.4 mumoles of pyridoxal phosphate under the same conditions. The internal concentration of vitamin B(6) was one-half of normal for AT1024 and increased fivefold for WG497.
摘要
一株对异烟肼耐药的大肠杆菌突变体（WG497）在稳定期早期含有0.6微摩尔细胞外吡哆胺和磷酸吡哆胺。一株赖氨酸抑制突变体（AT1024）在相同条件下含有1.4微摩尔磷酸吡哆醛。对于AT1024，维生素B6的细胞内浓度是正常浓度的一半，而对于WG497则增加了五倍。
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