Solution NMR structure of MED25(391-543) comprising the activator-interacting domain (ACID) of human mediator subunit 25.
J Struct Funct Genomics. 2011 Jul 23;
Authors: Eletsky A, Ruyechan WT, Xiao R, Acton TB, Montelione GT, Szyperski T
The solution NMR structure of protein MED25(391-543), comprising the activator interacting domain (ACID) of subunit 25 of the human mediator, is presented along with the measurement of polypeptide backbone heteronuclear (15)N-{(1)H} NOEs to identify fast internal motional modes. This domain interacts with the acidic transactivation domains of Herpes simplex type 1 (HSV-1) protein VP16 and the Varicella-zoster virus (VZV) major transactivator protein IE62, which initiate transcription of viral genes. The structure is similar to the ?-barrel domains of the human protein Ku and the SPOC domain of human protein SHARP, and provides a starting point to understand the structural biology of initiation of HSV-1 and VZV gene activation. Homology models built for the two ACID domains of the prostate tumor overexpressed (PTOV1) protein using the structure of MED25(391-543) as a template suggest that differential biological activities of the ACID domains in MED25 and PTOV1 arise from modulation of quite similar protein-protein interactions by variable residues grouped around highly conserved charged surface areas.
PMID: 21785987 [PubMed - as supplied by publisher]
Solution structure of the human Tax-interacting protein-1
Solution structure of the human Tax-interacting protein-1
Solution structure of the human Tax-interacting protein-1
Content Type Journal Article
Pages 329-334
DOI 10.1007/s10858-009-9361-8
Authors
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Solution NMR structure of MED25(391-543) comprising the activator-interacting domain (ACID) of human mediator subunit 25.
Linear Mode
