1wd9
From Proteopedia
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| - | [[Image:1wd9.gif|left|200px]] | + | [[Image:1wd9.gif|left|200px]] |
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| - | '''Calcium bound form of human peptidylarginine deiminase type4 (PAD4)''' | + | {{Structure |
| + | |PDB= 1wd9 |SIZE=350|CAPTION= <scene name='initialview01'>1wd9</scene>, resolution 2.60Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene> and <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/Protein-arginine_deiminase Protein-arginine deiminase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.3.15 3.5.3.15] | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''Calcium bound form of human peptidylarginine deiminase type4 (PAD4)''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1WD9 is a [ | + | 1WD9 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=1WD9 OCA]. |
==Reference== | ==Reference== | ||
| - | Structural basis for Ca(2+)-induced activation of human PAD4., Arita K, Hashimoto H, Shimizu T, Nakashima K, Yamada M, Sato M, Nat Struct Mol Biol. 2004 Aug;11(8):777-83. Epub 2004 Jul 11. PMID:[http:// | + | Structural basis for Ca(2+)-induced activation of human PAD4., Arita K, Hashimoto H, Shimizu T, Nakashima K, Yamada M, Sato M, Nat Struct Mol Biol. 2004 Aug;11(8):777-83. Epub 2004 Jul 11. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15247907 15247907] |
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Protein-arginine deiminase]] | [[Category: Protein-arginine deiminase]] | ||
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[[Category: post-translational enzyme]] | [[Category: post-translational enzyme]] | ||
| - | ''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 14:55:31 2008'' |
Revision as of 12:55, 20 March 2008
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| , resolution 2.60Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Activity: | Protein-arginine deiminase, with EC number 3.5.3.15 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Calcium bound form of human peptidylarginine deiminase type4 (PAD4)
Contents |
Overview
Peptidylarginine deiminase 4 (PAD4) is a Ca(2+)-dependent enzyme that catalyzes the conversion of protein arginine residues to citrulline. Its gene is a susceptibility locus for rheumatoid arthritis. Here we present the crystal structure of Ca(2+)-free wild-type PAD4, which shows that the polypeptide chain adopts an elongated fold in which the N-terminal domain forms two immunoglobulin-like subdomains, and the C-terminal domain forms an alpha/beta propeller structure. Five Ca(2+)-binding sites, none of which adopt an EF-hand motif, were identified in the structure of a Ca(2+)-bound inactive mutant with and without bound substrate. These structural data indicate that Ca(2+) binding induces conformational changes that generate the active site cleft. Our findings identify a novel mechanism for enzyme activation by Ca(2+) ions, and are important for understanding the mechanism of protein citrullination and for developing PAD-inhibiting drugs for the treatment of rheumatoid arthritis.
Disease
Known diseases associated with this structure: Rheumatoid arthritis, susceptibility to OMIM:[605347]
About this Structure
1WD9 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structural basis for Ca(2+)-induced activation of human PAD4., Arita K, Hashimoto H, Shimizu T, Nakashima K, Yamada M, Sato M, Nat Struct Mol Biol. 2004 Aug;11(8):777-83. Epub 2004 Jul 11. PMID:15247907
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