1svm: Difference between revisions

Revision as of 17:59, 26 June 2008

Ligands:

, ,

Related:

Structural annotation:
Resources:	CATH : 1Svma03, 1Svma01, 1Svmb01, 1Svmb03, 1Svmc01, 1Svmc03, 1Svmd01, 1Svmd03, 1Svme01, 1Svme03, 1Svmf01, 1Svmf03 InterPro : Ipr014015, Ipr010932, Ipr003133, Ipr001623 Pfam : PF06431 UniProt : P03070

Functional annotation:
Cellular component:	nucleus
Biological process:	DNA replication
Molecular function:	ATP binding heat shock protein binding metal ion binding nucleotide binding zinc ion binding DNA binding DNA replication origin binding protein binding

Evolutionary conservation:

Toggle Conservation Colors:	Rows = identical sequences:
Further Information:	Caveats, Explanation, Complete Results at ConSurfDB

Resources:

FirstGlance, OCA, RCSB, PDBsum

Coordinates:

save as pdb, mmCIF, xml

Co-crystal structure of SV40 large T antigen helicase domain and ATP

Template:ABSTRACT 15454080

About this StructureAbout this Structure

1SVM is a Single protein structure of sequence from Simian virus 40. The following page contains interesting information on the relation of 1SVM with [AAA+ Proteases]. Full crystallographic information is available from OCA.

Page seeded by OCA on Thu Jun 26 17:59:02 2008

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

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-[[Image:1svm.gif|left|200px]]
+[[Image:1svm.png|left|200px]]
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-==Overview==
+{{ABSTRACT_15454080}}
-The large tumor antigen (LTag) of simian virus 40, an AAA(+) protein, is a hexameric helicase essential for viral DNA replication in eukaryotic cells. LTag functions as an efficient molecular machine powered by ATP binding and hydrolysis for origin DNA melting and replication fork unwinding. To understand how ATP binding and hydrolysis are coupled to conformational changes, we have determined high-resolution structures ( approximately 1.9 A) of LTag hexamers in distinct nucleotide binding states. The structural differences of LTag in various nucleotide states detail the molecular mechanisms of conformational changes triggered by ATP binding/hydrolysis and reveal a potential mechanism of concerted nucleotide binding and hydrolysis. During these conformational changes, the angles and orientations between domains of a monomer alter, creating an "iris"-like motion in the hexamer. Additionally, six unique beta hairpins on the channel surface move longitudinally along the central channel, possibly serving as a motor for pulling DNA into the LTag double hexamer for unwinding.
 ==About this Structure==
 SVM is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. The following page contains interesting information on the relation of 1SVM with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb80_1.html AAA+ Proteases]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SVM OCA].
-==Reference==
-Mechanisms of conformational change for a replicative hexameric helicase of SV40 large tumor antigen., Gai D, Zhao R, Li D, Finkielstein CV, Chen XS, Cell. 2004 Oct 1;119(1):47-60. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15454080 15454080]
 [[Category: AAA+ Proteases]]
 [[Category: Simian virus 40]]
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 [[Category: Zhao, R.]]
 [[Category: Aaa+ fold]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 09:11:18 2008''
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Jun 26 17:59:02 2008''

1svm: Difference between revisions

Revision as of 17:59, 26 June 2008

About this StructureAbout this Structure

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