Supramolecular catalysis of phosphoryl transfer: cocatalysis of pyrophosphate synthesis from acetyl phosphate mediated by macrocyclic polyamines
作者:Mir Wais Hosseini、Jean Marie Lehn
DOI:10.1021/ja00257a024
日期:1987.11
L'hexaaza-24-crown-8 catalyse l'hydrolyse du phosphate d'acetyle en orthophosphate et la synthese de diphosphate
L'hexaaza-24-crown-8 催化 l'hydrolyse du phosphate d'acete en orthophosphate et la 合成脱二磷酸盐
Microorganism and its use for the preparation of glutathione
申请人:——
公开号:US04596775A1
公开(公告)日:1986-06-24
The present invention relates to a new mutant strain induced from a wild strain of the genus Escherichia, which is active upon a .gamma.-glutamyl-L-cystein synthesizing enzyme system and capable of releasing .gamma.-glutamyl-L-cystein synthetase from inhibition by glutathione. It preferably is Escherichia coli RC 912 (FERM-BP No. 47). The present invention also contemplates the preparation of glutathione by (1) culturing the foregoing strain in a culture medium' or (2) culturing said strain to first accumulate a .gamma.-glutamyl-L-cystein synthesizing enzyme system, and placing the latter into contact with a substrate of L-glutamic acid, L-cysteine and glycerine to form gluthatione by enzymatic reaction.
Mutant strain of Escherichia coli and its use for the preparation of
申请人:——
公开号:US04598046A1
公开(公告)日:1986-07-01
The present invention relates to a new mutant strain of Escherichia coli and its use for the preparation of glutathione. The present invention is based upon the discovery that a certain mutant strain which we have induced from a wild strain of Escherichia coli is capable of accumulating large amounts of glutathione and an enzyme system for the synthesis of glutathione in the cultured broth. The new mutant strain is preferably Escherichia coli designated Escherichia coli RC 912 p (FERM-BP No. 48).
A process for producing fructose-1,6-diphosphate comprising the steps of: (a) enzymatically converting adenosine 5'-diphosphate to adenosine 5'-triphosphate using an acetate kinase-containing microorganism or an extract of the microorganism and phosphate donor; and (b) enzymatically converting a substrate capable of being converted to glucose or fructose to fructose-1,6-diphosphate using the adenosine 5'-triphosphate resulting from step (a) and the acetate kinase-containing microorganism or the extract of the microorganism.
NOVEL N-ACETYLGLUCOSAMINE-2-EPIMERASE AND METHOD FOR PRODUCING CMP-NEURAMINIC ACID USING THE SAME
申请人:Woo Jin Suk
公开号:US20110287488A1
公开(公告)日:2011-11-24
The present invention relates to a novel N-acetylglucosamine-2-epimerase and a method for preparing CMP-N-acetylneuraminic acid, more specifically, relates to a N-acetylglucosamine-2-epimerase derived from
Bacteroides fragilis
NCTC 9343, and a method for preparing CMP-N-acetylneuraminic acid using said N-acetylglucosamine-2-epimerase. According to the present invention, CMP-N-acetylneuraminic acid can be produced economically in a large amount through a one-step reaction using cytidine monophosphate and N-acetyl-D-glucosamine which are inexpensive substrates.