1w4b
From Proteopedia
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| - | [[Image:1w4b.jpg|left|200px]] | + | [[Image:1w4b.jpg|left|200px]] |
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| - | '''P4 PROTEIN FROM PHI12 IN COMPLEX WITH PRODUCT (AMPCPP MG 22C)''' | + | {{Structure |
| + | |PDB= 1w4b |SIZE=350|CAPTION= <scene name='initialview01'>1w4b</scene>, resolution 2.3Å | ||
| + | |SITE= <scene name='pdbsite=AC1:Mg+Binding+Site+For+Chain+C'>AC1</scene> | ||
| + | |LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> and <scene name='pdbligand=ADP:ADENOSINE-5'-DIPHOSPHATE'>ADP</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''P4 PROTEIN FROM PHI12 IN COMPLEX WITH PRODUCT (AMPCPP MG 22C)''' | ||
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==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1W4B is a [ | + | 1W4B is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Pseudomonas_phage_phi12 Pseudomonas phage phi12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W4B OCA]. |
==Reference== | ==Reference== | ||
| - | Atomic snapshots of an RNA packaging motor reveal conformational changes linking ATP hydrolysis to RNA translocation., Mancini EJ, Kainov DE, Grimes JM, Tuma R, Bamford DH, Stuart DI, Cell. 2004 Sep 17;118(6):743-55. PMID:[http:// | + | Atomic snapshots of an RNA packaging motor reveal conformational changes linking ATP hydrolysis to RNA translocation., Mancini EJ, Kainov DE, Grimes JM, Tuma R, Bamford DH, Stuart DI, Cell. 2004 Sep 17;118(6):743-55. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15369673 15369673] |
[[Category: Pseudomonas phage phi12]] | [[Category: Pseudomonas phage phi12]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: virus dsrna]] | [[Category: virus dsrna]] | ||
| - | ''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 14:51:57 2008'' |
Revision as of 12:52, 20 March 2008
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| , resolution 2.3Å | |||||||
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| Sites: | |||||||
| Ligands: | and | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
P4 PROTEIN FROM PHI12 IN COMPLEX WITH PRODUCT (AMPCPP MG 22C)
Overview
Many viruses package their genome into preformed capsids using packaging motors powered by the hydrolysis of ATP. The hexameric ATPase P4 of dsRNA bacteriophage phi12, located at the vertices of the icosahedral capsid, is such a packaging motor. We have captured crystallographic structures of P4 for all the key points along the catalytic pathway, including apo, substrate analog bound, and product bound. Substrate and product binding have been observed as both binary complexes and ternary complexes with divalent cations. These structures reveal large movements of the putative RNA binding loop, which are coupled with nucleotide binding and hydrolysis, indicating how ATP hydrolysis drives RNA translocation through cooperative conformational changes. Two distinct conformations of bound nucleotide triphosphate suggest how hydrolysis is activated by RNA binding. This provides a model for chemomechanical coupling for a prototype of the large family of hexameric helicases and oligonucleotide translocating enzymes.
About this Structure
1W4B is a Single protein structure of sequence from Pseudomonas phage phi12. Full crystallographic information is available from OCA.
Reference
Atomic snapshots of an RNA packaging motor reveal conformational changes linking ATP hydrolysis to RNA translocation., Mancini EJ, Kainov DE, Grimes JM, Tuma R, Bamford DH, Stuart DI, Cell. 2004 Sep 17;118(6):743-55. PMID:15369673
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