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1d1j

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Revision as of 08:18, 6 December 2017

CRYSTAL STRUCTURE OF HUMAN PROFILIN II

Structural highlights

1d1j is a 4 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PROF2_HUMAN] Binds to actin and affects the structure of the cytoskeleton. At high concentrations, profilin prevents the polymerization of actin, whereas it enhances it at low concentrations. By binding to PIP2, it inhibits the formation of IP3 and DG.

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

Human profilins are multifunctional, single-domain proteins which directly link the actin microfilament system to a variety of signalling pathways via two spatially distinct binding sites. Profilin binds to monomeric actin in a 1:1 complex, catalyzes the exchange of the actin-bound nucleotide and regulates actin filament barbed end assembly. Like SH3 domains, profilin has a surface-exposed aromatic patch which binds to proline-rich peptides. Various multidomain proteins including members of the Ena/VASP and formin families localize profilin:actin complexes through profilin:poly-L-proline interactions to particular cytoskeletal locations (e.g. focal adhesions, cleavage furrows). Humans express a basic (I) and an acidic (II) isoform of profilin which exhibit different affinities for peptides and proteins rich in proline residues. Here, we report the crystallization and X-ray structure determination of human profilin II to 2.2 A. This structure reveals an aromatic extension of the previously defined poly-L-proline binding site for profilin I. In contrast to serine 29 of profilin I, tyrosine 29 in profilin II is capable of forming an additional stacking interaction and a hydrogen bond with poly-L-proline which may account for the increased affinity of the second isoform for proline-rich peptides. Differential isoform specificity for proline-rich proteins may be attributed to the differences in charged and hydrophobic residues in and proximal to the poly-L-proline binding site. The actin-binding face remains nearly identical with the exception of five amino acid differences. These observations are important for the understanding of the functional and structural differences between these two classes of profilin isoforms.

X-ray structure determination of human profilin II: A comparative structural analysis of human profilins.,Nodelman IM, Bowman GD, Lindberg U, Schutt CE J Mol Biol. 1999 Dec 17;294(5):1271-85. PMID:10600384^[1]

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

References

↑ Nodelman IM, Bowman GD, Lindberg U, Schutt CE. X-ray structure determination of human profilin II: A comparative structural analysis of human profilins. J Mol Biol. 1999 Dec 17;294(5):1271-85. PMID:10600384 doi:10.1006/jmbi.1999.3318

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/1d1j"

@@ Line 1: / Line 1: @@
 ==CRYSTAL STRUCTURE OF HUMAN PROFILIN II==
 <StructureSection load='1d1j' size='340' side='right' caption='[[1d1j]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[1d1j]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D1J OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1D1J FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=PG5:1-METHOXY-2-[2-(2-METHOXY-ETHOXY]-ETHANE'>PG5</scene>, <scene name='pdbligand=PG6:1-(2-METHOXY-ETHOXY)-2-{2-[2-(2-METHOXY-ETHOXY]-ETHOXY}-ETHANE'>PG6</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=1d1j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1d1j OCA], [http://pdbe.org/1d1j PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1d1j RCSB], [http://www.ebi.ac.uk/pdbsum/1d1j PDBsum]</span></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=1d1j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1d1j OCA], [http://pdbe.org/1d1j PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1d1j RCSB], [http://www.ebi.ac.uk/pdbsum/1d1j PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1d1j ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 12: / Line 13: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d1/1d1j_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d1/1d1j_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 27: / Line 28: @@
 </div>
 <div class="pdbe-citations 1d1j" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Profilin|Profilin]]
 == References ==
 <references/>

1d1j

From Proteopedia

Revision as of 08:18, 6 December 2017

CRYSTAL STRUCTURE OF HUMAN PROFILIN II

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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