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==CRYSTAL STRUCTURE OF GRANCALCIN WITH BOUND CALCIUM==
==CRYSTAL STRUCTURE OF GRANCALCIN WITH BOUND CALCIUM==
<StructureSection load='1f4o' size='340' side='right' caption='[[1f4o]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
<StructureSection load='1f4o' size='340' side='right'caption='[[1f4o]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1f4o]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1F4O OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1F4O FirstGlance]. <br>
<table><tr><td colspan='2'>[[1f4o]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1F4O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1F4O FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene><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]] 2.5&#8491;</td></tr>
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1f4q|1f4q]]</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></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1f4o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1f4o OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1f4o RCSB], [http://www.ebi.ac.uk/pdbsum/1f4o 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=1f4o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1f4o OCA], [https://pdbe.org/1f4o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1f4o RCSB], [https://www.ebi.ac.uk/pdbsum/1f4o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1f4o ProSAT]</span></td></tr>
<table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/GRAN_HUMAN GRAN_HUMAN] Calcium-binding protein that may play a role in the adhesion of neutrophils to fibronectin. May play a role in the formation of focal adhesions.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/f4/1f4o_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/f4/1f4o_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1f4o ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Grancalcin is a Ca(2+)-binding protein expressed at high level in neutrophils. It belongs to the PEF family, proteins containing five EF-hand motifs and which are known to associate with membranes in Ca(2+)-dependent manner. Prototypic members of this family are Ca(2+)-binding domains of calpain. Our recent finding that grancalcin interacts with L-plastin, a protein known to have actin bundling activity, suggests that grancalcin may play a role in regulation of adherence and migration of neutrophils. The structure of human grancalcin has been determined at 1.9 A resolution in the absence of calcium (R-factor of 0.212 and R-free of 0.249) and at 2. 5 A resolution in the presence of calcium (R-factor of 0.226 and R-free of 0.281). The molecule is predominantly alpha-helical: it contains eight alpha-helices and only two short stretches of two-stranded beta-sheets between the loops of paired EF-hands. Grancalcin forms dimers through the association of the unpaired EF5 hands in a manner similar to that observed in calpain, confirming this mode of association as a paradigm for the PEF family. Only one Ca(2+) was found per dimer under crystallization conditions that included CaCl(2). This cation binds to EF3 in one molecule, while this site in the second molecule of the dimer is unoccupied. This unoccupied site shows higher mobility. The structure determined in the presence of calcium, although does not represent a fully Ca(2+)-loaded form, suggests that calcium induces rather small conformational rearrangements. Comparison with calpain suggests further that the relatively small magnitude of conformational changes invoked by calcium alone may be a characteristic feature of the PEF family. Moreover, the largest differences are localized to the EF1, thus supporting the notion that calcium signaling occurs through this portion of the molecule and that it may involve the N-terminal Gly/Pro rich segment. Electrostatic potential distribution shows significant differences between grancalcin and calpain domain VI demonstrating their distinct character.
Crystal structure of human grancalcin, a member of the penta-EF-hand protein family.,Jia J, Han Q, Borregaard N, Lollike K, Cygler M J Mol Biol. 2000 Jul 28;300(5):1271-81. PMID:10903868<ref>PMID:10903868</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Borregaard, N.]]
[[Category: Large Structures]]
[[Category: Cygler, M.]]
[[Category: Borregaard N]]
[[Category: Han, Q.]]
[[Category: Cygler M]]
[[Category: Jia, J.]]
[[Category: Han Q]]
[[Category: Lollike, K.]]
[[Category: Jia J]]
[[Category: Calcium binding protein]]
[[Category: Lollike K]]
[[Category: Metal transport]]
[[Category: Penta-ef-hand protein]]

Latest revision as of 10:10, 7 February 2024

CRYSTAL STRUCTURE OF GRANCALCIN WITH BOUND CALCIUMCRYSTAL STRUCTURE OF GRANCALCIN WITH BOUND CALCIUM

Structural highlights

1f4o is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.5Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

GRAN_HUMAN Calcium-binding protein that may play a role in the adhesion of neutrophils to fibronectin. May play a role in the formation of focal adhesions.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

1f4o, resolution 2.50Å

Drag the structure with the mouse to rotate

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OCA
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