2iw5: Difference between revisions
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==Overview== | ==Overview== | ||
Histone methylation regulates diverse chromatin-templated processes, including transcription. Many transcriptional corepressor complexes, contain lysine-specific demethylase 1 (LSD1) and CoREST that collaborate, to demethylate mono- and dimethylated H3-K4 of nucleosomes. Here, we, report the crystal structure of the LSD1-CoREST complex. LSD1-CoREST forms, an elongated structure with a long stalk connecting the catalytic domain, of LSD1 and the CoREST SANT2 domain. LSD1 recognizes a large segment of, the H3 tail through a deep, negatively charged pocket at the active site, and possibly a shallow groove on its surface. CoREST SANT2 interacts with, DNA. Disruption of the SANT2-DNA interaction diminishes CoREST-dependent, demethylation of nucleosomes by LSD1. The shape and dimension of, .. | Histone methylation regulates diverse chromatin-templated processes, including transcription. Many transcriptional corepressor complexes, contain lysine-specific demethylase 1 (LSD1) and CoREST that collaborate, to demethylate mono- and dimethylated H3-K4 of nucleosomes. Here, we, report the crystal structure of the LSD1-CoREST complex. LSD1-CoREST forms, an elongated structure with a long stalk connecting the catalytic domain, of LSD1 and the CoREST SANT2 domain. LSD1 recognizes a large segment of, the H3 tail through a deep, negatively charged pocket at the active site, and possibly a shallow groove on its surface. CoREST SANT2 interacts with, DNA. Disruption of the SANT2-DNA interaction diminishes CoREST-dependent, demethylation of nucleosomes by LSD1. The shape and dimension of, LSD1-CoREST suggest its bivalent binding to nucleosomes, allowing, efficient H3-K4 demethylation. This spatially separated, multivalent, nucleosome binding mode may apply to other chromatin-modifying enzymes, that generally contain multiple nucleosome binding modules. | ||
==About this Structure== | ==About this Structure== | ||
2IW5 is a | 2IW5 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 CL, NH4, FAD and GOL as [http://en.wikipedia.org/wiki/ligands ligands]. Structure known Active Site: AC1. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2IW5 OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: transcription regulation]] | [[Category: transcription regulation]] | ||
''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 13:23:25 2007'' | ||
