1g99
From Proteopedia
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|PDB= 1g99 |SIZE=350|CAPTION= <scene name='initialview01'>1g99</scene>, resolution 2.5Å | |PDB= 1g99 |SIZE=350|CAPTION= <scene name='initialview01'>1g99</scene>, resolution 2.5Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=ADP:ADENOSINE-5'-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Acetate_kinase Acetate kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.2.1 2.7.2.1] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Acetate_kinase Acetate kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.2.1 2.7.2.1] </span> |
|GENE= ACK ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2210 Methanosarcina thermophila]) | |GENE= ACK ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2210 Methanosarcina thermophila]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1g99 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g99 OCA], [http://www.ebi.ac.uk/pdbsum/1g99 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1g99 RCSB]</span> | ||
}} | }} | ||
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[[Category: Ingram-Smith, C.]] | [[Category: Ingram-Smith, C.]] | ||
[[Category: Sanders, D A.]] | [[Category: Sanders, D A.]] | ||
| - | [[Category: | + | [[Category: actin) superfamily]] |
| - | [[Category: | + | [[Category: alpha/beta]] |
| - | [[Category: | + | [[Category: askha (acetate and sugar kinase]] |
| - | [[Category: | + | [[Category: conserved epsilon conformation]] |
[[Category: hsc70]] | [[Category: hsc70]] | ||
| + | [[Category: two similar domain]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:39:20 2008'' |
Revision as of 17:39, 30 March 2008
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| , resolution 2.5Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | ACK (Methanosarcina thermophila) | ||||||
| Activity: | Acetate kinase, with EC number 2.7.2.1 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
AN ANCIENT ENZYME: ACETATE KINASE FROM METHANOSARCINA THERMOPHILA
Overview
Acetate kinase, an enzyme widely distributed in the Bacteria and Archaea domains, catalyzes the phosphorylation of acetate. We have determined the three-dimensional structure of Methanosarcina thermophila acetate kinase bound to ADP through crystallography. As we previously predicted, acetate kinase contains a core fold that is topologically identical to that of the ADP-binding domains of glycerol kinase, hexokinase, the 70-kDa heat shock cognate (Hsc70), and actin. Numerous charged active-site residues are conserved within acetate kinases, but few are conserved within the phosphotransferase superfamily. The identity of the points of insertion of polypeptide segments into the core fold of the superfamily members indicates that the insertions existed in the common ancestor of the phosphotransferases. Another remarkable shared feature is the unusual, epsilon conformation of the residue that directly precedes a conserved glycine residue (Gly-331 in acetate kinase) that binds the alpha-phosphate of ADP. Structural, biochemical, and geochemical considerations indicate that an acetate kinase may be the ancestral enzyme of the ASKHA (acetate and sugar kinases/Hsc70/actin) superfamily of phosphotransferases.
About this Structure
1G99 is a Single protein structure of sequence from Methanosarcina thermophila. Full crystallographic information is available from OCA.
Reference
Urkinase: structure of acetate kinase, a member of the ASKHA superfamily of phosphotransferases., Buss KA, Cooper DR, Ingram-Smith C, Ferry JG, Sanders DA, Hasson MS, J Bacteriol. 2001 Jan;183(2):680-6. PMID:11133963
Page seeded by OCA on Sun Mar 30 20:39:20 2008
