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3i5w

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Revision as of 18:52, 4 August 2016

Crystal structure of human alpha-defensin 5 (mutant R13H)

Structural highlights

3i5w is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	1zmp, 3gny
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[DEF5_HUMAN] Has antimicrobial activity against Gram-negative and Gram-positive bacteria. Defensins are thought to kill microbes by permeabilizing their plasma membrane. All DEFA5 peptides exert antimicrobial activities, but their potency is affected by peptide processing.^[1] ^[2] ^[3]

Publication Abstract from PubMed

Defensins constitute a major family of natural antimicrobial peptides that protect the host against microbial invasion. Here, we report on the antibacterial properties and cellular interaction of Human Defensin 5 as a function of its positive charge and hydrophobicity. We find that selective replacement of arginine residues in HD-5 by alanine or charge-neutral lysine residues reduces antibacterial killing as well as host cell interaction. We identify arginines at positions 9 and 28 in the HD-5 sequence as particularly important for its function. Replacement of arginine at position 13 to Histidine, as observed in a Crohn's disease patient, reduced bacterial killing strain-selectively. Finally, we find that HD-5 interacts with host cells via receptor-mediated mechanisms.

Selective arginines are important for the antibacterial activity and host cell interaction of human alpha-defensin 5.,de Leeuw E, Rajabi M, Zou G, Pazgier M, Lu W FEBS Lett. 2009 Aug 6;583(15):2507-12. Epub 2009 Jul 7. PMID:19589339^[4]

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

References

↑ Ghosh D, Porter E, Shen B, Lee SK, Wilk D, Drazba J, Yadav SP, Crabb JW, Ganz T, Bevins CL. Paneth cell trypsin is the processing enzyme for human defensin-5. Nat Immunol. 2002 Jun;3(6):583-90. Epub 2002 May 20. PMID:12021776 doi:10.1038/ni797
↑ Ericksen B, Wu Z, Lu W, Lehrer RI. Antibacterial activity and specificity of the six human {alpha}-defensins. Antimicrob Agents Chemother. 2005 Jan;49(1):269-75. PMID:15616305 doi:10.1128/AAC.49.1.269-275.2005
↑ Szyk A, Wu Z, Tucker K, Yang D, Lu W, Lubkowski J. Crystal structures of human alpha-defensins HNP4, HD5, and HD6. Protein Sci. 2006 Dec;15(12):2749-60. Epub 2006 Nov 6. PMID:17088326 doi:ps.062336606
↑ de Leeuw E, Rajabi M, Zou G, Pazgier M, Lu W. Selective arginines are important for the antibacterial activity and host cell interaction of human alpha-defensin 5. FEBS Lett. 2009 Aug 6;583(15):2507-12. Epub 2009 Jul 7. PMID:19589339 doi:10.1016/j.febslet.2009.06.051

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3i5w"

@@ Line 1: / Line 1: @@
 ==Crystal structure of human alpha-defensin 5 (mutant R13H)==
 <StructureSection load='3i5w' size='340' side='right' caption='[[3i5w]], [[Resolution|resolution]] 1.63&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FLC:CITRATE+ANION'>FLC</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1zmp|1zmp]], [[3gny|3gny]]</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=3i5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3i5w OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3i5w RCSB], [http://www.ebi.ac.uk/pdbsum/3i5w 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=3i5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3i5w OCA], [http://pdbe.org/3i5w PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3i5w RCSB], [http://www.ebi.ac.uk/pdbsum/3i5w PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3i5w ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3i5w" style="background-color:#fffaf0;"></div>
 ==See Also==

3i5w

From Proteopedia

Revision as of 18:52, 4 August 2016

Crystal structure of human alpha-defensin 5 (mutant R13H)

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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