1px5
From Proteopedia
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|PDB= 1px5 |SIZE=350|CAPTION= <scene name='initialview01'>1px5</scene>, resolution 1.74Å | |PDB= 1px5 |SIZE=350|CAPTION= <scene name='initialview01'>1px5</scene>, resolution 1.74Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | + | |LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=YCM:S-(2-AMINO-2-OXOETHYL)-L-CYSTEINE'>YCM</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= OAS1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9823 Sus scrofa]) | |GENE= OAS1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9823 Sus scrofa]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1px5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1px5 OCA], [http://www.ebi.ac.uk/pdbsum/1px5 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1px5 RCSB]</span> | ||
}} | }} | ||
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[[Category: Sen, G C.]] | [[Category: Sen, G C.]] | ||
[[Category: Yee, V C.]] | [[Category: Yee, V C.]] | ||
| - | [[Category: SO4]] | ||
[[Category: 5-stranded antiparalel beta sheet]] | [[Category: 5-stranded antiparalel beta sheet]] | ||
[[Category: four helix bundle]] | [[Category: four helix bundle]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:05:43 2008'' |
Revision as of 20:05, 30 March 2008
| |||||||
| , resolution 1.74Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | OAS1 (Sus scrofa) | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of the 2'-specific and double-stranded RNA-activated interferon-induced antiviral protein 2'-5'-oligoadenylate synthetase
Overview
2'-5'-oligoadenylate synthetases are interferon-induced, double-stranded RNA-activated antiviral enzymes which are the only proteins known to catalyze 2'-specific nucleotidyl transfer. This crystal structure of a 2'-5'-oligoadenylate synthetase reveals a structural conservation with the 3'-specific poly(A) polymerase that, coupled with structure-guided mutagenesis, supports a conserved catalytic mechanism for the 2'- and 3'-specific nucleotidyl transferases. Comparison with structures of other superfamily members indicates that the donor substrates are bound by conserved active site features while the acceptor substrates are oriented by nonconserved regions. The 2'-5'-oligoadenylate synthetases are activated by viral double-stranded RNA in infected cells and initiate a cellular response by synthesizing 2'-5'-oligoadenylates, which in turn activate RNase L. This crystal structure suggests that activation involves a domain-domain shift and identifies a putative dsRNA activation site that is probed by mutagenesis, thus providing structural insight into cellular recognition of viral double-stranded RNA.
About this Structure
1PX5 is a Single protein structure of sequence from Sus scrofa. Full crystallographic information is available from OCA.
Reference
Crystal structure of the 2'-specific and double-stranded RNA-activated interferon-induced antiviral protein 2'-5'-oligoadenylate synthetase., Hartmann R, Justesen J, Sarkar SN, Sen GC, Yee VC, Mol Cell. 2003 Nov;12(5):1173-85. PMID:14636576
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