Riboflavin Deficiency and Respiratory Flavoproteins of Bacillus subtilis
نویسندگان
چکیده
منابع مشابه
Activation of Riboflavin Production by Bacillus subtilis (KU559874) and Bacillus tequilensis (KU559876)
The current study aimed to improve riboflavin production by native bacterial isolates and medium components. Bacterial species Bacillus subtilis ASU8 (KU559874) and Bacillus tequilensis ASU9 (KU559876) showed high potentiality for riboflavin production. The optimal growth and riboflavin production were achieved after 48 h. The impact of glycine addation to the basal medium was explored by apply...
متن کاملBiosynthesis of riboflavin: characterization of the bifunctional deaminase-reductase of Escherichia coli and Bacillus subtilis.
The ribG gene at the 5' end of the riboflavin operon of Bacillus subtilis and a reading frame at 442 kb on the Escherichia coli chromosome (subsequently designated ribD) show similarity with deoxycytidylate deaminase and with the RIB7 gene of Saccharomyces cerevisiae. The ribG gene of B. subtilis and the ribD gene of E. coli were expressed in recombinant E. coli strains and were shown to code f...
متن کاملEffects of riboflavin on 6,7-dimethyl-8-ribityllumazine formation in growing cells of a riboflavin-adenine-deficient mutant, Bacillus subtilis.
The effects of riboflavin on the formation of 6,7-dimethyl-8-ribityllumazine (DMRL) were examined using the growing cells of a riboflavin, adenine deficient-mutant, Bacillus subtilis. The administration of low concentrations (50-500 ng/mL) of riboflavin to the basal medium significantly inhibited the formation of DMRL without any change in growth. Especially, the supplementation of more than 25...
متن کاملCharacterization of riboflavin (vitamin B2) transport proteins from Bacillus subtilis and Corynebacterium glutamicum.
Riboflavin (vitamin B(2)) is the direct precursor of the flavin cofactors flavin mononucleotide and flavin adenine dinucleotide, essential components of cellular biochemistry. In this work we investigated the unrelated proteins YpaA from Bacillus subtilis and PnuX from Corynebacterium glutamicum for a role in riboflavin uptake. Based on the regulation of the corresponding genes by a riboswitch ...
متن کاملCrystallization and preliminary X-ray diffraction study of heavy riboflavin synthase from Bacillus subtilis.
Crystals of heavy riboflavin synthase from Bacillus subtilis have been obtained from 1.3 M sodium/potassium phosphate, pH 8.7, containing 0.35 mM 5-nitroso-6-(1'-D-ribitylamino)-2,4(1H,3H)-pyrimidinedione. X-ray photographs indicate a hexagonal unit cell with dimensions of a = b = 156.4 A; c = 298.5 A; alpha = beta = 90 degrees; gamma = 120 degrees. The space group was established as P6(3)22 wi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of General Microbiology
سال: 1974
ISSN: 0022-1287
DOI: 10.1099/00221287-85-2-303