RECOGNITION BY MAX OF ITS COGNATE DNA THROUGH A DIMERIC B/HLH/Z DOMAIN

被引:639
作者
FERREDAMARE, AR
PRENDERGAST, GC
ZIFF, EB
BURLEY, SK
机构
[1] ROCKEFELLER UNIV, MOLEC BIOPHYS LAB, 1230 YORK AVE, NEW YORK, NY 10021 USA
[2] ROCKEFELLER UNIV, HOWARD HUGHES MED INST LAB, NEW YORK, NY 10021 USA
[3] KAPLAN CANC CTR, DEPT BIOCHEM, NEW YORK, NY 10016 USA
[4] NYU MED CTR, HOWARD HUGHES MED INST, NEW YORK, NY 10016 USA
关键词
D O I
10.1038/363038a0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The three-dimensional structure of the basic/helix-loop-helix/leucine zipper domain of the transcription factor Max complexed with DNA has been determined by X-ray crystallography at 2.9 angstrom resolution. Max binds as a dimer to its recognition sequence CACGTG by direct contacts between the alpha-helical basic region and the major groove. This symmetric homodimer, a new protein fold, is a parallel, left-handed, four-helix bundle, with each monomer containing two alpha-helical segments separated by a loop. The two alpha-helical segments are composed of the basic region plus helix 1 and helix 2 plus the leucine repeat, respectively. As in GCN4, the leucine repeat forms a parallel coiled coil.
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页码:38 / 45
页数:8
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