1LE5

Crystal structure of a NF-kB heterodimer bound to an IFNb-kB

1LE5 の概要

• エントリーDOI: 10.2210/pdb1le5/pdb
• 関連するPDBエントリー: 1LE9 1LEI 1VKX
• 分子名称: 5'-D(*TP*GP*GP*GP*AP*AP*AP*TP*TP*CP*CP*T)-3', 5'-D(*AP*AP*GP*GP*AP*AP*TP*TP*TP*CP*CP*C)-3', Nuclear factor NF-kappa-B p65 subunit, ... (5 entities in total)
• 機能のキーワード: protein-dna complex, transcription factors, rel/nf-kb protein, transcription-dna complex, transcription/dna
• 由来する生物種: Mus musculus (house mouse); 詳細
• 細胞内の位置: Nucleus: Q04207; Nucleus. Isoform 5: Cytoplasm. Isoform 6: Nucleus. Isoform 7: Nucleus: P25799
• タンパク質・核酸の鎖数: 8
• 化学式量合計: 146990.24

構造登録者

Berkowitz, B.,Huang, D.B.,Chen-Park, F.E.,Sigler, P.B.,Ghosh, G. (登録日: 2002-04-09, 公開日: 2003-04-15, 最終更新日: 2024-10-30)

主引用文献

Berkowitz, B.,Huang, D.B.,Chen-Park, F.E.,Sigler, P.B.,Ghosh, G.
The X-ray crystal structure of the NF-kB p50/p65 heterodimer bound to the Interferon beta-kB site
J.Biol.Chem., 277:24694-24700, 2002

PubMed Abstract: We have determined the x-ray crystal structure of the transcription factor NF-kappaB p50.p65 heterodimer complexed to kappaB DNA from the cytokine interferon beta enhancer (IFNbeta-kappaB). To better understand how the binding modes of NF-kappaB on its two best studied DNA targets might contribute to promoter-specific transcription, this structure is compared with the previously determined complex crystal structure containing NF-kappaB bound to the Ig kappa light chain gene enhancer as well as to a second NF-kappaB.Ig kappa light chain gene enhancer complex also reported in this paper. The global binding modes of all NF-kappaB.DNA complex structures are similar, although crystal-packing interactions lead to differences between identical complexes of the same crystallographic asymmetric unit. An extensive network of stacked amino acid side chains that contribute to base-specific DNA contacts is conserved among the three complexes. Consistent with earlier reports, however, the IFNbeta-kappaB DNA is bent significantly less by NF-kappaB than is the Ig kappa light chain gene enhancer. This and other small structural changes may play a role in explaining why NF-kappaB-directed transcription is sensitive to the context of specific promoters. The precise molecular mechanism behind the involvement of the high mobility group protein I(Y) in interferon beta enhanceosome formation remains elusive.

PubMed: 11970948
DOI: 10.1074/jbc.M200006200

実験手法

X-RAY DIFFRACTION (2.75 Å)