1ro0: Difference between revisions
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==Bifunctional DNA primase/polymerase domain of ORF904 from the archaeal plasmid pRN1- Triple mutant F50M/L107M/L110M SeMet remote== | ==Bifunctional DNA primase/polymerase domain of ORF904 from the archaeal plasmid pRN1- Triple mutant F50M/L107M/L110M SeMet remote== | ||
<StructureSection load='1ro0' size='340' side='right' caption='[[1ro0]], [[Resolution|resolution]] 1.80Å' scene=''> | <StructureSection load='1ro0' size='340' side='right'caption='[[1ro0]], [[Resolution|resolution]] 1.80Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1ro0]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"sulfolobus_islandicus"_zillig_et_al._1994 "sulfolobus islandicus" zillig et al. 1994]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RO0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1RO0 FirstGlance]. <br> | <table><tr><td colspan='2'>[[1ro0]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"sulfolobus_islandicus"_zillig_et_al._1994 "sulfolobus islandicus" zillig et al. 1994]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RO0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1RO0 FirstGlance]. <br> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Sulfolobus islandicus zillig et al. 1994]] | [[Category: Sulfolobus islandicus zillig et al. 1994]] | ||
[[Category: Large Structures]] | |||
[[Category: Buchen, C]] | [[Category: Buchen, C]] | ||
[[Category: Cramer, P]] | [[Category: Cramer, P]] | ||
Revision as of 22:44, 11 December 2019
Bifunctional DNA primase/polymerase domain of ORF904 from the archaeal plasmid pRN1- Triple mutant F50M/L107M/L110M SeMet remoteBifunctional DNA primase/polymerase domain of ORF904 from the archaeal plasmid pRN1- Triple mutant F50M/L107M/L110M SeMet remote
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedGenome replication generally requires primases, which synthesize an initial oligonucleotide primer, and DNA polymerases, which elongate the primer. Primase and DNA polymerase activities are combined, however, in newly identified replicases from archaeal plasmids, such as pRN1 from Sulfolobus islandicus. Here we present a structure-function analysis of the pRN1 primase-polymerase (prim-pol) domain. The crystal structure shows a central depression lined by conserved residues. Mutations on one side of the depression reduce DNA affinity. On the opposite side of the depression cluster three acidic residues and a histidine, which are required for primase and DNA polymerase activity. One acidic residue binds a manganese ion, suggestive of a metal-dependent catalytic mechanism. The structure does not show any similarity to DNA polymerases, but is distantly related to archaeal and eukaryotic primases, with corresponding active-site residues. We propose that archaeal and eukaryotic primases and the prim-pol domain have a common evolutionary ancestor, a bifunctional replicase for small DNA genomes. Structure of a bifunctional DNA primase-polymerase.,Lipps G, Weinzierl AO, von Scheven G, Buchen C, Cramer P Nat Struct Mol Biol. 2004 Feb;11(2):157-62. Epub 2004 Jan 18. PMID:14730355[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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