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1eqn

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Revision as of 09:40, 21 July 2021

E.COLI PRIMASE CATALYTIC CORE

Structural highlights

1eqn is a 5 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
NonStd Res:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PRIM_ECOLI] DNA primase is the polymerase that synthesizes small RNA primers for the Okazaki fragments on both template strands at replication forks during chromosomal DNA synthesis.

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 PubMed

Primases synthesize short RNA strands on single-stranded DNA templates, thereby generating the hybrid duplexes required for the initiation of synthesis by DNA polymerases. We present the crystal structure of the catalytic unit of a primase enzyme, that of a approximately 320 residue fragment of Escherichia coli primase, determined at 2.9 A resolution. Central to the catalytic unit is a TOPRIM domain that is strikingly similar in its structure to that of corresponding domains in DNA topoisomerases, but is unrelated to the catalytic centers of other DNA or RNA polymerases. The catalytic domain of primase is crescent-shaped, and the concave face of the crescent is predicted to accommodate about 10 base-pairs of RNA-DNA duplex in a loose interaction, thereby limiting processivity.

A TOPRIM domain in the crystal structure of the catalytic core of Escherichia coli primase confirms a structural link to DNA topoisomerases.,Podobnik M, McInerney P, O'Donnell M, Kuriyan J J Mol Biol. 2000 Jul 7;300(2):353-62. PMID:10873470^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Podobnik M, McInerney P, O'Donnell M, Kuriyan J. A TOPRIM domain in the crystal structure of the catalytic core of Escherichia coli primase confirms a structural link to DNA topoisomerases. J Mol Biol. 2000 Jul 7;300(2):353-62. PMID:10873470 doi:10.1006/jmbi.2000.3844

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1eqn"

@@ Line 3: / Line 3: @@
 <StructureSection load='1eqn' size='340' side='right'caption='[[1eqn]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1eqn]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EQN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1EQN FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1eqn]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EQN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EQN FirstGlance]. <br>
 </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1eqn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1eqn OCA], [http://pdbe.org/1eqn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1eqn RCSB], [http://www.ebi.ac.uk/pdbsum/1eqn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1eqn ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1eqn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1eqn OCA], [https://pdbe.org/1eqn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1eqn RCSB], [https://www.ebi.ac.uk/pdbsum/1eqn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1eqn ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/PRIM_ECOLI PRIM_ECOLI]] DNA primase is the polymerase that synthesizes small RNA primers for the Okazaki fragments on both template strands at replication forks during chromosomal DNA synthesis.
+[[https://www.uniprot.org/uniprot/PRIM_ECOLI PRIM_ECOLI]] DNA primase is the polymerase that synthesizes small RNA primers for the Okazaki fragments on both template strands at replication forks during chromosomal DNA synthesis.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 30: / Line 30: @@
 ==See Also==
-*[[RNA polymerase|RNA polymerase]]
+*[[RNA polymerase 3D structures|RNA polymerase 3D structures]]
 == References ==
 <references/>

1eqn

From Proteopedia

Revision as of 09:40, 21 July 2021

E.COLI PRIMASE CATALYTIC CORE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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