1njg
From Proteopedia
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| - | [[Image:1njg.gif|left|200px]] | + | [[Image:1njg.gif|left|200px]] |
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| - | '''Nucleotide-free form of an Isolated E. coli Clamp Loader Gamma Subunit''' | + | {{Structure |
| + | |PDB= 1njg |SIZE=350|CAPTION= <scene name='initialview01'>1njg</scene>, resolution 2.20Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> and <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/DNA-directed_DNA_polymerase DNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.7 2.7.7.7] | ||
| + | |GENE= DnaX ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]) | ||
| + | }} | ||
| + | |||
| + | '''Nucleotide-free form of an Isolated E. coli Clamp Loader Gamma Subunit''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1NJG is a [ | + | 1NJG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NJG OCA]. |
==Reference== | ==Reference== | ||
| - | Nucleotide-induced conformational changes in an isolated Escherichia coli DNA polymerase III clamp loader subunit., Podobnik M, Weitze TF, O'Donnell M, Kuriyan J, Structure. 2003 Mar;11(3):253-63. PMID:[http:// | + | Nucleotide-induced conformational changes in an isolated Escherichia coli DNA polymerase III clamp loader subunit., Podobnik M, Weitze TF, O'Donnell M, Kuriyan J, Structure. 2003 Mar;11(3):253-63. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12623013 12623013] |
[[Category: DNA-directed DNA polymerase]] | [[Category: DNA-directed DNA polymerase]] | ||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
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[[Category: SO4]] | [[Category: SO4]] | ||
[[Category: ZN]] | [[Category: ZN]] | ||
| - | [[Category: aaa+ atpase | + | [[Category: aaa+ atpase domain]] |
[[Category: rossman-like fold]] | [[Category: rossman-like fold]] | ||
[[Category: sensor 1]] | [[Category: sensor 1]] | ||
[[Category: sensor 2]] | [[Category: sensor 2]] | ||
| - | ''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 12:57:40 2008'' |
Revision as of 10:57, 20 March 2008
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| , resolution 2.20Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Gene: | DnaX (Escherichia coli) | ||||||
| Activity: | DNA-directed DNA polymerase, with EC number 2.7.7.7 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Nucleotide-free form of an Isolated E. coli Clamp Loader Gamma Subunit
Overview
Sliding clamps are loaded onto DNA by ATP-driven clamp loader complexes. The structure of the E. coli clamp loader in a nucleotide-free state has been determined previously. We now report crystal structures of a truncated form of the isolated gamma-ATPase subunit, gamma(1-243), of the E. coli clamp loader, in nucleotide-free and bound forms. The gamma subunit adopts a defined conformation when empty, in which the nucleotide binding site is blocked. The binding of either ATPgammaS or ADP, which are shown to bind with equal affinity to gamma(1-243), induces a change in the relative orientation of the two domains such that nucleotides can be accommodated. This change would break one of the gamma:gamma interfaces seen in the empty clamp loader complex, and may represent one step in the activation process.
About this Structure
1NJG is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Nucleotide-induced conformational changes in an isolated Escherichia coli DNA polymerase III clamp loader subunit., Podobnik M, Weitze TF, O'Donnell M, Kuriyan J, Structure. 2003 Mar;11(3):253-63. PMID:12623013
Page seeded by OCA on Thu Mar 20 12:57:40 2008
