Characterization of P450 FcpC, the enzyme responsible for bioconversion of diosgenone to isonuatigenone in Streptomyces virginiae IBL-14.

نویسندگان

  • Wei Wang
  • Feng-Qing Wang
  • Dong-Zhi Wei
چکیده

A new cytochrome P450 monooxygenase, FcpC, from Streptomyces virginiae IBL-14 has been identified. This enzyme is found to be responsible for the bioconversion of a pyrano-spiro steroid (diosgenone) to a rare nuatigenin-type spiro steroid (isonuatigenone), which is a novel C-25-hydroxylated diosgenone derivative. A whole-cell P450 system was developed for the production of isonuatigenone via the expression of the complete three-component electron transfer chain in an Escherichia coli strain.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

REASSOCIATION AND REACTIVATION OF GLUCOSE 6-PHOSPHATE DEHYDROGENASE FROM STREPTOMYCES AUREOFACIENS AFTER DENATURATION BY 6 M UREA

Glucose 6-phosphate dehydrogenase (G6PD) from Streptomyces aureofaciens was purified and denatured in 6 M urea. Denaturation led to complete dissociation of the enzyme into its inactive monomers, 98% loss of the enzyme activity, about 30% decrease in the protein fluorescence and a 10 nm red shift in the emission maximum. Dilution of urea-denatured enzyme resulted in regaining of the enzyme acti...

متن کامل

P-192: Association of Cytochrome P450 2D6 (CYP2D6) Gene Polymorphism with Clomiphene Citrate Treatment in Iranian Infertile Women with Polycystic Ovary Syndrome

Background: Clomiphene Citrate (CC) is the most frequently administered drug for the treatment of female infertility [e.g. polycystic ovary syndrome (PCOS)]; which aims at restoring ovulation. Clomiphene is metabolized by CYP2D6, an important enzyme responsible for the metabolism of approximately 25% of clinically used drugs. CYP2D6 is very polymorphic and thought to result in inter- individual...

متن کامل

STREPTOMYCES FRADIAE, A POTENT PRODUCER OF CHOLESTEROL OXIDASE

Thirteen species of Streptomycetes, Arthrobacters and Mycobacterium were studied for the determination of a potential cholesterol oxidase producer. Only Streptomyces fradiae and Streptomyces rishiriences were found to be capable of producing this enzyme. Streptomyces fradiae was selected for the production of cholesterol oxidase and cultured in different media to find optimum media and con...

متن کامل

Characterization of proteolytic enzyme secreted by Streptomyces cinereoruber ssp. cinereoruber isolated from human pleural fluid

Actinomycetes are an uncommon agent of human infections and its pathogenic factors are not known. The present study reports a rare case isolation of an actinomycete from a woman pleural fluid; the strain was identified by 16S rRNA gene sequence analysis. This strain was tested to produce an extracellular protease that hydrolysis gelatin, casein and hemoglobin on agar mediums. The purification o...

متن کامل

Identification and in vivo functional analysis of a virginiamycin S resistance gene (varS) from Streptomyces virginiae.

BarA of Streptomyces virginiae is a specific receptor protein for virginiae butanolide (VB), one of the gamma-butyrolactone autoregulators of the Streptomyces species, and acts as a transcriptional regulator controlling both virginiamycin production and VB biosynthesis. The downstream gene barB, the transcription of which is under the tight control of the VB-BarA system, was found to be transcr...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Applied and environmental microbiology

دوره 75 12  شماره 

صفحات  -

تاریخ انتشار 2009