2rus: Difference between revisions
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|PDB= 2rus |SIZE=350|CAPTION= <scene name='initialview01'>2rus</scene>, resolution 2.3Å | |PDB= 2rus |SIZE=350|CAPTION= <scene name='initialview01'>2rus</scene>, resolution 2.3Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand= | |LIGAND= <scene name='pdbligand=FOR:FORMYL+GROUP'>FOR</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> | ||
|ACTIVITY= [http://en.wikipedia.org/wiki/Ribulose-bisphosphate_carboxylase Ribulose-bisphosphate carboxylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.1.39 4.1.1.39] | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Ribulose-bisphosphate_carboxylase Ribulose-bisphosphate carboxylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.1.39 4.1.1.39] </span> | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2rus FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rus OCA], [http://www.ebi.ac.uk/pdbsum/2rus PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2rus RCSB]</span> | |||
}} | }} | ||
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[[Category: Lundqvist, T.]] | [[Category: Lundqvist, T.]] | ||
[[Category: Schneider, G.]] | [[Category: Schneider, G.]] | ||
[[Category: lyase(carbon-carbon)]] | [[Category: lyase(carbon-carbon)]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 05:02:40 2008'' | ||
Revision as of 05:02, 31 March 2008
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| , resolution 2.3Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Activity: | Ribulose-bisphosphate carboxylase, with EC number 4.1.1.39 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF THE TERNARY COMPLEX OF RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE, MG(II), AND ACTIVATOR CO2 AT 2.3-ANGSTROMS RESOLUTION
OverviewOverview
The activated ternary complex, enzyme-CO2-Mg(II), of the dimeric ribulose-1,5-bisphosphate carboxylase/oxygenase from Rhodospirillum rubrum can be prepared in the same crystal form that was used for the crystallographic structure determination of the native nonactivated enzyme (Schneider, G., Branden, C.-I., & Lorimer, G. (1986) J. Mol. Biol. 187, 141-143). The three-dimensional structure of the activated enzyme has been determined to a nominal resolution of 2.3 A by protein crystallographic methods. The activator CO2 forms a carbamate with Lys191, located at the bottom of the funnel-shaped active site. In both subunits, this labile adduct is stabilized by a Mg(II) ion, bound to the carbamate and the side chains of Asp193 and Glu194. One solvent molecule was found within the first coordination sphere of the metal ion. The metal-binding site in ribulose-1,5-bisphosphate carboxylase consists thus of at least three protein ligands, all located on loop 2 of the beta/alpha barrel. One additional metal ligand, the side chain of the conserved Asn111, was observed close to the Mg(II) ion in the B-subunit. Other structural differences at the active site between the activated and nonactivated enzyme are limited to side-chain positions. Nevertheless, it is obvious that the hydrogen-bonding pattern in the vicinity of the activator site is completely altered.
About this StructureAbout this Structure
2RUS is a Single protein structure of sequence from Rhodospirillum rubrum. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structure of the ternary complex of ribulose-1,5-bisphosphate carboxylase, Mg(II), and activator CO2 at 2.3-A resolution., Lundqvist T, Schneider G, Biochemistry. 1991 Jan 29;30(4):904-8. PMID:1899197
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