ThYme: a database for thioester-active enzymes

نویسندگان

  • David C. Cantu
  • Yingfei Chen
  • Matthew L. Lemons
  • Peter J. Reilly
چکیده

The ThYme (Thioester-active enzYme; http://www.enzyme.cbirc.iastate.edu) database has been constructed to bring together amino acid sequences and 3D (tertiary) structures of all the enzymes constituting the fatty acid synthesis and polyketide synthesis cycles. These enzymes are active on thioester-containing substrates, specifically those that are parts of the acyl-CoA synthase, acyl-CoA carboxylase, acyl transferase, ketoacyl synthase, ketoacyl reductase, hydroxyacyl dehydratase, enoyl reductase and thioesterase enzyme groups. These groups have been classified into families, members of which are similar in sequences, tertiary structures and catalytic mechanisms, implying common protein ancestry. ThYme is continually updated as sequences and tertiary structures become available.

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

Structural classification and properties of ketoacyl reductases, hydroxyacyl dehydratases and enoyl reductases.

Ketoacyl reductases (KRs), hydroxyacyl dehydratases (HDs) and enoyl reductases (ERs) are part of the fatty acid and polyketide synthesis cycles. Their reverse reactions, catalyzed by acyl dehydrogenases (equivalent to ERs), enoyl hydratases (equivalent to HDs) and hydroxyacyl dehydrogenases (equivalent to KRs), are part of fatty acid degradation by β-oxidation. These enzymes have been classifie...

متن کامل

Structural classification and properties of ketoacyl synthases and biotin-dependent carboxylases

Ketoacyl synthases (KSs) catalyze condensing reactions combining acyl-CoA or acylacyl carrier protein (ACP) with malonyl-CoA to form 3-ketoacyl-CoA, or with malonyl-ACP to form 3-ketoacyl-ACP. In each case the resulting acyl chain is two carbon atoms longer than before, and CO2 and either CoA or ACP are formed. KSs also join other activated molecules in the polyketide synthesis cycle. Our class...

متن کامل

Effects of pharmaceutical formulations containing thyme on carbon tetrachloride-induced liver injury in rats

BACKGROUND Herbal supplements are widely used in the treatment of various liver disases, but some of them may also induce liver injuries. Regarding the infuence of thyme and its constituents on the liver, conflicting results have been reported in the literature. The objective of this study was to examine the influence of two commonly used pharmaceutical formulations containing thyme (Thymus vul...

متن کامل

Protein ubiquitination and formation of polyubiquitin chains without ATP, E1 and E2 enzymes.

Studying protein ubiquitination is difficult due to the complexity of the E1-E2-E3 ubiquitination cascade. Here we report the discovery that C-terminal ubiquitin thioesters can undergo direct transthiolation with the catalytic cysteine of the model HECT E3 ubiquitin ligase Rsp5 to form a catalytically active Rsp5∼ubiquitin thioester (Rsp5∼Ub). The resulting Rsp5∼Ub undergoes efficient autoubiqu...

متن کامل

Crystal Structure of the Human Ubiquitin-activating Enzyme 5 (UBA5) Bound to ATP

E1 ubiquitin-activating enzymes (UBAs) are large multidomain proteins that catalyze formation of a thioester bond between the terminal carboxylate of a ubiquitin or ubiquitin-like modifier (UBL) and a conserved cysteine in an E2 protein, producing reactive ubiquityl units for subsequent ligation to substrate lysines. Two important E1 reaction intermediates have been identified: a ubiquityl-aden...

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:

دوره 39  شماره 

صفحات  -

تاریخ انتشار 2011