4hpk: Difference between revisions

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-[[Image:4hpk.jpg|left|200px]]
-{{STRUCTURE_4hpk|  PDB=4hpk  |  SCENE=  }}
+==Crystal structure of Clostridium histolyticum colg collagenase collagen-binding domain 3B at 1.35 Angstrom resolution in presence of calcium nitrate==
+<StructureSection load='4hpk' size='340' side='right'caption='[[4hpk]], [[Resolution|resolution]] 1.35&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[4hpk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Hathewaya_histolytica Hathewaya histolytica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HPK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HPK FirstGlance]. <br>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.35&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=NO3:NITRATE+ION'>NO3</scene></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=4hpk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hpk OCA], [https://pdbe.org/4hpk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hpk RCSB], [https://www.ebi.ac.uk/pdbsum/4hpk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hpk ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/COLG_HATHI COLG_HATHI] Clostridial collagenases are among the most efficient degraders of eukaryotic collagen known; saprophytes use collagen as a carbon source while pathogens additionally digest collagen to aid in host colonization. Has both tripeptidylcarboxypeptidase on Gly-X-Y and endopeptidase activities; the endopeptidase cuts within the triple helix region of collagen while tripeptidylcarboxypeptidase successively digests the exposed ends, thus clostridial collagenases can digest large sections of collagen (PubMed:3002446). Active on soluble type I collagen, insoluble collagen, azocoll, soluble PZ-peptide (all collagenase substrates) and gelatin (PubMed:9922257). The full-length protein has collagenase activity, while the in vivo derived C-terminally truncated shorter versions only act on gelatin (PubMed:9922257). In vitro digestion of soluble calf skin collagen fibrils requires both ColG and ColH; ColG forms missing the second collagen-binding domain are also synergistic with ColH, although their overall efficiency is decreased (PubMed:18374061, PubMed:22099748). The activator domain (residues 119-388) and catalytic subdomain (389-670) open and close around substrate using a Gly-rich hinge (387-397), allowing digestion when the protein is closed (PubMed:21947205, PubMed:23703618). Binding of collagen requires Ca(2+) and is inhibited by EGTA; the collagen-binding domain (CBD, S3a plus S3b) specifically recognizes the triple-helical conformation made by 3 collagen protein chains in the triple-helical region (PubMed:11121400). Isolated CBD (S3a plus S3b) binds collagen fibrils and sheets of many tissues (PubMed:11913772).<ref>PMID:11121400</ref> <ref>PMID:11913772</ref> <ref>PMID:18374061</ref> <ref>PMID:18937627</ref> <ref>PMID:21947205</ref> <ref>PMID:22099748</ref> <ref>PMID:23703618</ref> <ref>PMID:24125730</ref> <ref>PMID:28820255</ref> <ref>PMID:3002446</ref> <ref>PMID:9922257</ref>
-===Crystal structure of Clostridium histolyticum colg collagenase collagen-binding domain 3B at 1.35 Angstrom resolution in presence of calcium nitrate===
+==See Also==
+*[[Collagenase 3D structures|Collagenase 3D structures]]
+== References ==
-==About this Structure==
+<references/>
-[[4hpk]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Clostridium_histolyticum Clostridium histolyticum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HPK OCA].
+__TOC__
-[[Category: Clostridium histolyticum]]
+</StructureSection>
-[[Category: Bauer, R.]]
+[[Category: Hathewaya histolytica]]
-[[Category: Matsushita, O.]]
+[[Category: Large Structures]]
-[[Category: Philominathan, S T.L.]]
+[[Category: Bauer R]]
-[[Category: Sakon, J.]]
+[[Category: Matsushita O]]
-[[Category: Wilson, J J.]]
+[[Category: Philominathan STL]]
-[[Category: Beta-sandwich jelly-roll]]
+[[Category: Sakon J]]
-[[Category: Collagen binding]]
+[[Category: Wilson JJ]]
-[[Category: Protein binding]]