2i7t
From Proteopedia
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| - | [[Image:2i7t.jpg|left|200px]] | + | [[Image:2i7t.jpg|left|200px]] |
| - | + | ||
| - | '''Structure of human CPSF-73''' | + | {{Structure |
| + | |PDB= 2i7t |SIZE=350|CAPTION= <scene name='initialview01'>2i7t</scene>, resolution 2.10Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> and <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= CPSF3, CPSF73 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
| + | }} | ||
| + | |||
| + | '''Structure of human CPSF-73''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2I7T is a [ | + | 2I7T is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2I7T OCA]. |
==Reference== | ==Reference== | ||
| - | Polyadenylation factor CPSF-73 is the pre-mRNA 3'-end-processing endonuclease., Mandel CR, Kaneko S, Zhang H, Gebauer D, Vethantham V, Manley JL, Tong L, Nature. 2006 Dec 14;444(7121):953-6. Epub 2006 Nov 26. PMID:[http:// | + | Polyadenylation factor CPSF-73 is the pre-mRNA 3'-end-processing endonuclease., Mandel CR, Kaneko S, Zhang H, Gebauer D, Vethantham V, Manley JL, Tong L, Nature. 2006 Dec 14;444(7121):953-6. Epub 2006 Nov 26. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17128255 17128255] |
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: SO4]] | [[Category: SO4]] | ||
[[Category: ZN]] | [[Category: ZN]] | ||
| - | [[Category: | + | [[Category: artemi]] |
[[Category: double-strand break repair]] | [[Category: double-strand break repair]] | ||
[[Category: metallo-b-lactamase]] | [[Category: metallo-b-lactamase]] | ||
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[[Category: v(d)j recombination]] | [[Category: v(d)j recombination]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:26:31 2008'' |
Revision as of 15:26, 20 March 2008
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| , resolution 2.10Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Gene: | CPSF3, CPSF73 (Homo sapiens) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of human CPSF-73
Overview
Most eukaryotic messenger RNA precursors (pre-mRNAs) undergo extensive maturational processing, including cleavage and polyadenylation at the 3'-end. Despite the characterization of many proteins that are required for the cleavage reaction, the identity of the endonuclease is not known. Recent analyses indicated that the 73-kDa subunit of cleavage and polyadenylation specificity factor (CPSF-73) might be the endonuclease for this and related reactions, although no direct data confirmed this. Here we report the crystal structures of human CPSF-73 at 2.1 A resolution, complexed with zinc ions and a sulphate that might mimic the phosphate group of the substrate, and the related yeast protein CPSF-100 (Ydh1) at 2.5 A resolution. Both CPSF-73 and CPSF-100 contain two domains, a metallo-beta-lactamase domain and a novel beta-CASP (named for metallo-beta-lactamase, CPSF, Artemis, Snm1, Pso2) domain. The active site of CPSF-73, with two zinc ions, is located at the interface of the two domains. Purified recombinant CPSF-73 possesses RNA endonuclease activity, and mutations that disrupt zinc binding in the active site abolish this activity. Our studies provide the first direct experimental evidence that CPSF-73 is the pre-mRNA 3'-end-processing endonuclease.
About this Structure
2I7T is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Polyadenylation factor CPSF-73 is the pre-mRNA 3'-end-processing endonuclease., Mandel CR, Kaneko S, Zhang H, Gebauer D, Vethantham V, Manley JL, Tong L, Nature. 2006 Dec 14;444(7121):953-6. Epub 2006 Nov 26. PMID:17128255
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