1b8h

From Proteopedia

(Difference between revisions)

Current revision

SLIDING CLAMP, DNA POLYMERASE

Structural highlights

1b8h is a 4 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 3Å
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/1b8h"

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

@@ Line 1: / Line 1: @@
 ==SLIDING CLAMP, DNA POLYMERASE==
-<StructureSection load='1b8h' size='340' side='right' caption='[[1b8h]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
+<StructureSection load='1b8h' size='340' side='right'caption='[[1b8h]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1b8h]] is a 4 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=1B8H OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1B8H FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1b8h]] is a 4 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=1B8H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1B8H 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]] 3&#8491;</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=1b8h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b8h OCA], [http://pdbe.org/1b8h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1b8h RCSB], [http://www.ebi.ac.uk/pdbsum/1b8h PDBsum]</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=1b8h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b8h OCA], [https://pdbe.org/1b8h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1b8h RCSB], [https://www.ebi.ac.uk/pdbsum/1b8h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1b8h 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. [[http://www.uniprot.org/uniprot/DPOL_BPR69 DPOL_BPR69]] This polymerase possesses two enzymatic activities: DNA synthesis (polymerase) and an exonucleolytic activity that degrades single stranded DNA in the 3'- to 5'-direction.
+[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]]
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/b8/1b8h_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/b8/1b8h_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 31: / Line 32: @@
 __TOC__
 </StructureSection>
-[[Category: Bpr69]]
+[[Category: Escherichia phage RB69]]
-[[Category: Shamoo, Y]]
+[[Category: Large Structures]]
-[[Category: Steitz, T A]]
+[[Category: Shamoo Y]]
-[[Category: Accessory protein]]
+[[Category: Steitz TA]]
-[[Category: Gp45]]
-[[Category: Replisome]]
-[[Category: Sliding clamp]]
-[[Category: Transferase]]

1b8h

From Proteopedia

Current revision

SLIDING CLAMP, DNA POLYMERASE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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