1l3e: Difference between revisions
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==Overview== | ==Overview== | ||
Adaptation to hypoxia is mediated by transactivation of hypoxia-responsive, genes by hypoxia-inducible factor-1 (HIF-1) in complex with the CBP and, p300 transcriptional coactivators. We report the solution structure of the, cysteine/histidine-rich 1 (CH1) domain of p300 bound to the C-terminal, transactivation domain of HIF-1 alpha. CH1 has a triangular geometry, composed of four alpha-helices with three intervening Zn(2+)-coordinating, centers. CH1 serves as a scaffold for folding of the HIF-1 alpha, C-terminal transactivation domain, which forms a vise-like clamp on the, CH1 domain that is stabilized by extensive hydrophobic and polar, interactions. The structure reveals the mechanism of specific recognition, of p300 by HIF-1 alpha, and shows how HIF-1 alpha transactivation is, . | Adaptation to hypoxia is mediated by transactivation of hypoxia-responsive, genes by hypoxia-inducible factor-1 (HIF-1) in complex with the CBP and, p300 transcriptional coactivators. We report the solution structure of the, cysteine/histidine-rich 1 (CH1) domain of p300 bound to the C-terminal, transactivation domain of HIF-1 alpha. CH1 has a triangular geometry, composed of four alpha-helices with three intervening Zn(2+)-coordinating, centers. CH1 serves as a scaffold for folding of the HIF-1 alpha, C-terminal transactivation domain, which forms a vise-like clamp on the, CH1 domain that is stabilized by extensive hydrophobic and polar, interactions. The structure reveals the mechanism of specific recognition, of p300 by HIF-1 alpha, and shows how HIF-1 alpha transactivation is, regulated by asparagine hydroxylation. | ||
==About this Structure== | ==About this Structure== | ||
1L3E is a | 1L3E is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with ZN as [http://en.wikipedia.org/wiki/ligand ligand]. Structure known Active Sites: Zn1, Zn2 and Zn3. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1L3E OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: protein-protein complex]] | [[Category: protein-protein complex]] | ||
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 5 13:00:07 2007'' | ||
