摘要:
A DNA fragment containing a gene concerned in biotin biosynthesis and derived from a microorganism belonging to the genus Sphingomonas, a plasmid containing said DNA fragment, and a biotin-producing transformant containing said plasmid. There is provided a technique for utilizing a gene concerned in biotin biosynthesis and derived from a microorganism belonging to the genus Sphingomonas, for breeding of a biotin-producing micro-organism by genetic engineering.
摘要:
The present invention provides a process for production of amide compounds, which includes converting a nitrile compound into its corresponding amide compound by hydrating the nitrile compound in the presence of a cultured broth of bacterial cells, intact bacterial cells, disrupted bacterial cells or enzymes contained therein, or immobilized preparations obtainable by immobilizing intact bacterial cells, disrupted bacterial cells or enzymes contained therein, the bacterial cells being those of a biologically pure culture of a thermophilic microorganism having hydration activity to convert a nitrile compound into its corresponding amide compound, such as Bacillus smithii SC-J05-1 (FERM BP-4935).
摘要:
There is disclosed a process for the production of biotin, in which a culture of a microorganism of the genus Sphingomonas, having an ability to produce biotin, is prepared in a medium, and biotin produced and accumulated in the medium is collected. Also disclosed are microorganisms of the genus Sphingomonas, having an ability to produce biotin, which are useful for this production process of the present invention.
摘要:
Optically active cyclopentenolones, which are useful as an intermediate of pyrethroid insecticides, are produced from racemic cyclopentenolones according to the following procedures; (1) asymmetric hydrolysis of racemic carboxylate esters of the cyclopentenolones, (2) nitrate- or sulfonate-esterification of the asymmetrical hydrolysis products, and (3) hydrolysis of the esterification products.
摘要:
There is provided a method for improving optical purity of an amine compound of the formula I: ##STR1## wherein R.sup.1 indicates a phenyl group which may be substituted or an aralkyl group having 7 to 10 carbon atoms which may be substituted, and R.sup.2 indicates an alkyl group having 1 to 6 carbon atoms, which is characterized by contacting a cutlture of a microorganism belonging to Arthrobacter having an ability to preferentially metabolize one optical isomer based on an asymmetric carbon atom to which an amino group bonds in the amine compound of the formula I or a treated product thereof with the amine compound of the formula I.
摘要:
In a process for extracting glucose isomerase from microorganism cells containing glucose isomerase by the so called high pressure release and impact method in which the suspension of the microorganism cells is homogenized for the extraction by releasing the pressure applied on said suspension instantaneously and giving the suspension an impact at very high velocity, the concentration of the suspension containing microorganism cells and the pressure applied on the said suspension are selected within specific ranges, namely from 0.5 to 10 wt. % (on a dry substance base) and from 400 to 700 Kg/cm.sup.2, respectively.
摘要翻译:在通过所谓的高压释放和冲击法从含有葡萄糖异构酶的微生物细胞中提取葡萄糖异构酶的方法中,其中微生物细胞的悬浮液通过释放立即施加在所述悬浮液上的压力并将悬浮液 以非常高的速度冲击,含有微生物细胞的悬浮液的浓度和施加在所述悬浮液上的压力在特定范围内选择,即0.5至10wt。 %(在干物质基础上)和400至700Kg / cm 2。
摘要:
DNA encoding a novel protein from Mycobacterium aurum SC-S423 capable of converting acetophenone to an optically active 1-phenylethlamine in the presence of a racemic mixture of sec-butylamine is provided, along with a vector and host cell comprising the same and a method of producing the same.
摘要:
A novel protein from Mycobacterium aurum SC-D423 capable of converting acetophenone to an optically active 1-phenylethylamine in the presence of a racemic mixture of sec-butylamine is provided.
摘要:
An isolated esterase gene coding for an esterase capable of causing asymmetric hydrolysis of an organic carboxylic acid ester of a cyclopentenolone of formula I; wherein R1 is C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl or C1-C4 haloalkyl, to produce the cyclopentenolone of formula I in (S)-form, and hybridizing to the base sequence of SEQ ID NO:1, is useful for the industrially favorable production of optically active cyclopentenolones of formula I which serve as the intermediates of drugs, agricultural chemicals or other active products.
摘要翻译:编码能够引起式I的环戊烯醇酮的有机羧酸酯的不对称水解的酯酶的分离的酯酶基因;其中R1是C1-C10烷基,C2-C10链烯基,C2-C10炔基或C1-C4卤代烷基, 产生(S) - 型的式I的环戊烯醇酮,并与SEQ ID NO:1的碱基序列杂交,可用于工业上有利地生产作为药物中间体的式I的光学活性的环戊烯醇酮,农药 或其他活性产品。
摘要:
An industrially advantageous production method of an optically active alcohol useful for cosmetics and medical supplies or production intermediates thereof using an esterase having an ability to selectively hydrolyze an optically active sphingoid compound.