Dihydrolipoyl transacetylase (or dihydrolipoamide acetyltransferase) is an enzyme component of the multienzyme pyruvate dehydrogenase complex. The pyruvate dehydrogenase complex is responsible for the pyruvate decarboxylation step that links glycolysis to the citric acid cycle. This involves the transformation of pyruvate from glycolysis into acetyl-CoA which is then used in the citric acid cycle to carry out cellular respiration.
There are three different enzyme components in the pyruvate dehydrogenase complex. Pyruvate dehydrogenase (EC 1.2.4.1) is responsible for the oxidation of pyruvate, dihydrolipoyl transacetylase (this enzyme; EC 2.3.1.12) transfers the acetyl group to coenzyme A (CoA), and dihydrolipoyl dehydrogenase (EC 1.8.1.4) regenerates the lipoamide. Because dihydrolipoyl transacetylase is the second of the three enzyme components participating in the reaction mechanism for conversion of pyruvate into acetyl CoA, it is sometimes referred to as E2.
In humans, dihydrolipoyl transacetylase enzymatic activity resides in the pyruvate dehydrogenase complex component E2 (PDCE2) that is encoded by the DLAT (dihydrolipoamide S-acetyltransferase) gene.[5]
^ abcGRCh38: Ensembl release 89: ENSG00000150768 – Ensembl, May 2017
^ abcGRCm38: Ensembl release 89: ENSMUSG00000000168 – Ensembl, May 2017
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Leung PS, Watanabe Y, Munoz S, Teuber SS, Patel MS, Korenberg JR, Hara P, Coppel R, Gershwin ME (1993). "Chromosome localization and RFLP analysis of PDC-E2: the major autoantigen of primary biliary cirrhosis". Autoimmunity. 14 (4): 335–40. doi:10.3109/08916939309079237. PMID 8102256.
and 9 Related for: Dihydrolipoyl transacetylase information
Dihydrolipoyltransacetylase (or dihydrolipoamide acetyltransferase) is an enzyme component of the multienzyme pyruvate dehydrogenase complex. The pyruvate...
24 molecules of dihydrolipoyltransacetylase (E2). Up to 16 homodimers of pyruvate dehydrogenase (E1) and 8 homodimers of dihydrolipoyl dehydrogenase (E3)...
Iodine-deficiency (ICD-10 code: E02) Estradiol, an estrogen steroid hormone Dihydrolipoyltransacetylase, the second element of the multienzyme pyruvate dehydrogenase...
lipoamide to coenzyme A (CoA) by the activity of the E2, or dihydrolipoyltransacetylase, component of the complex. This is an isoenergetic conversion...
mutation. More rarely, mutations occur in the E2 (dihydrolipoyltransacetylase) or the E3 (dihydrolipoyl dehydrogenase) subunits of the PDC enzymatic complex...
"Recombinant expression and evaluation of the lipoyl domains of the dihydrolipoyl acetyltransferase component of the human pyruvate dehydrogenase complex"...
interaction between the pyruvate dehydrogenase kinase isoform 2 and the dihydrolipoyl acetyltransferase". The Journal of Biological Chemistry. 278 (36): 33681–93...
The E3 binding protein directly interacts with the dihydrolipoamide transacetylase (E2) core, anchoring it to the complex. E3BP binds the I domain of E2...