1b77

From Proteopedia

(Difference between revisions)

Revision as of 23:20, 27 December 2023

BUILDING A REPLISOME STRUCTURE FROM INTERACTING PIECES: A SLIDING CLAMP COMPLEXED WITH AN INTERACTION PEPTIDE FROM DNA POLYMERASE

Structural highlights

1b77 is a 3 chain structure with sequence from Escherichia phage RB69. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.1Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CLAMP_BPR69 Sliding clamp that encircles the genomic DNA and links the DNA polymerase to the template to control the processivity of DNA synthesis. Responsible for tethering the catalytic subunit of DNA polymerase to DNA during high-speed replication. Interaction with the sliding-clamp-loader opens the sliding clamp so that it can be loaded around the DNA template. During transcription, encircles the DNA and tethers host RNA polymerase (RNAP) to it.[HAMAP-Rule:MF_04161]

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

We have solved the crystal structures of the bacteriophage RB69 sliding clamp, its complex with a peptide essential for DNA polymerase interactions, and the DNA polymerase complexed with primer-template DNA. The editing complex structure shows a partially melted duplex DNA exiting from the exonuclease domain at an unexpected angle and significant changes in the protein structure. The clamp complex shows the C-terminal 11 residues of polymerase bound in a hydrophobic pocket, and it allows docking of the editing and clamp structures together. The peptide binds to the sliding clamp at a position identical to that of a replication inhibitor peptide bound to PCNA, suggesting that the replication inhibitor protein p21CIP1 functions by competing with eukaryotic polymerases for the same binding pocket on the clamp.

Building a replisome from interacting pieces: sliding clamp complexed to a peptide from DNA polymerase and a polymerase editing complex.,Shamoo Y, Steitz TA Cell. 1999 Oct 15;99(2):155-66. PMID:10535734^[1]

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

References

↑ Shamoo Y, Steitz TA. Building a replisome from interacting pieces: sliding clamp complexed to a peptide from DNA polymerase and a polymerase editing complex. Cell. 1999 Oct 15;99(2):155-66. PMID:10535734

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1b77"

Categories: Escherichia phage RB69 | Large Structures | Shamoo Y | Steitz TA

@@ Line 3: / Line 3: @@
 <StructureSection load='1b77' size='340' side='right'caption='[[1b77]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1b77]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Bpr69 Bpr69]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B77 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1B77 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1b77]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_phage_RB69 Escherichia phage RB69]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B77 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1B77 FirstGlance]. <br>
-</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GENE 45 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=12353 BPR69])</td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1b77 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b77 OCA], [http://pdbe.org/1b77 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1b77 RCSB], [http://www.ebi.ac.uk/pdbsum/1b77 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1b77 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=1b77 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b77 OCA], [https://pdbe.org/1b77 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1b77 RCSB], [https://www.ebi.ac.uk/pdbsum/1b77 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1b77 ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/DPA5_BPR69 DPA5_BPR69]] Replisome sliding clamp subunit. Responsible for tethering the catalytic subunit of DNA polymerase to DNA during high-speed replication.
+[https://www.uniprot.org/uniprot/CLAMP_BPR69 CLAMP_BPR69] Sliding clamp that encircles the genomic DNA and links the DNA polymerase to the template to control the processivity of DNA synthesis. Responsible for tethering the catalytic subunit of DNA polymerase to DNA during high-speed replication. Interaction with the sliding-clamp-loader opens the sliding clamp so that it can be loaded around the DNA template. During transcription, encircles the DNA and tethers host RNA polymerase (RNAP) to it.[HAMAP-Rule:MF_04161]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 32: / Line 32: @@
 __TOC__
 </StructureSection>
-[[Category: Bpr69]]
+[[Category: Escherichia phage RB69]]
 [[Category: Large Structures]]
-[[Category: Shamoo, Y]]
+[[Category: Shamoo Y]]
-[[Category: Steitz, T A]]
+[[Category: Steitz TA]]
-[[Category: Gp45]]
-[[Category: Replisome]]
-[[Category: Sliding clamp]]

1b77

From Proteopedia

Revision as of 23:20, 27 December 2023

BUILDING A REPLISOME STRUCTURE FROM INTERACTING PIECES: A SLIDING CLAMP COMPLEXED WITH AN INTERACTION PEPTIDE FROM DNA POLYMERASE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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