TBP binding to the TATA box induces a specific downstream unwinding site that is targeted by pluramycin.
TBP binding to the TATA box induces a specific downstream unwinding site that is targeted by pluramycin.
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TBP 与 TATA 盒的结合诱导了普拉霉素靶向的特定下游解旋位点。
DOI:
10.1016/1074-5521(95)90263-5
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发表时间:
1995
影响因子:
--
通讯作者:
Hurley,LH
中科院分区:
文献类型:
--
作者:
Sun,D;Hurley,LH
Background: The TATA-binding protein (TUP) is one ot downstream of the TATA sequence through an apparent thr nlajor components of the hunlan TFIIL1 niultiprotein transient un\vinding of the L) NA. Pluranlycln adducts are conlplc\-. It i\imporwlt in directing the initiation of detected by the production ofUNA strand breakage prod-RNA tr. ulscription ‘It a site innnediatcly downstream of ucts upon heating. Incubation of plurarnycin with the the TATA sequcncc (TATA box) found in n~ ly cukar- TUl’-DNA complex facilitates the trapping of the specific)-otic pronloters. The crystal structure ofTUP conlplexcd conlplex by u~ tercalation. Gel nnobility shift and circularwith dn oligonucleotide contannng the TATA box izntion assays reveal that the binding of pluralnycnl on the 1reveJed J protcin with an approximate two-fold syn- 3’-side of the TATA box region considerably Ttnbihze\the mctry XX hich Clpparently has symmetrical interaction\with TBl’-DNA complex. 11NA. It is not kno\\rn how an asymmetric effect involv- Conclusions: We propose that the TI-IP-11) NA-pluralrl~ cin ing do\\nstl-earn ‘lctivation can bv produced by an dppar- ternary complex is J ‘specific’binding inode in which TBP eiit c)-ninietric complex. We tet out to exaniine the state and plurCwiycin m, lke compensatory nltcrations in DNA, of IINA in thr TUl’-LINA complex using pluramycln, J accounting for the improved stability of the terndry smell molccula~-\veight probe of 1) NA accessibility. complex. WC also propose J model of the ternary cornplrx Results: Hillding of TUI’ to the TATA box facilitates that explains the observed asynnnetric cf&ct of TUP 1ntercJatlon of pluramvcin at J defined site imniediately binding to the TATA box.