3i5w

From Proteopedia

(Difference between revisions)

Current revision

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

Structural highlights

3i5w 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 1.63Å
Ligands:	,
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"

Categories: Homo sapiens | Large Structures | Lu W | Pazgier M

@@ Line 3: / Line 3: @@
 <StructureSection load='3i5w' size='340' side='right'caption='[[3i5w]], [[Resolution|resolution]] 1.63&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3i5w]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3I5W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3I5W FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3i5w]] 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=3I5W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3I5W FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FLC:CITRATE+ANION'>FLC</scene></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]] 1.63&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1zmp|1zmp]], [[3gny|3gny]]</div></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FLC:CITRATE+ANION'>FLC</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=3i5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3i5w OCA], [https://pdbe.org/3i5w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3i5w RCSB], [https://www.ebi.ac.uk/pdbsum/3i5w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3i5w ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/DEF5_HUMAN 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.<ref>PMID:12021776</ref> <ref>PMID:15616305</ref> <ref>PMID:17088326</ref>
+[https://www.uniprot.org/uniprot/DEF5_HUMAN 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.<ref>PMID:12021776</ref> <ref>PMID:15616305</ref> <ref>PMID:17088326</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 26: / Line 26: @@
 __TOC__
 </StructureSection>
+[[Category: Homo sapiens]]
 [[Category: Large Structures]]
-[[Category: Lu, W]]
+[[Category: Lu W]]
-[[Category: Pazgier, M]]
+[[Category: Pazgier M]]
-[[Category: Antibiotic]]
-[[Category: Antimicrobial]]
-[[Category: Antimicrobial peptide]]
-[[Category: Antimicrobial protein]]
-[[Category: Defensin]]
-[[Category: Disulfide bond]]
-[[Category: Fungicide]]
-[[Category: Hd5]]
-[[Category: Human alpha-defensin 5]]
-[[Category: Secreted]]

3i5w

From Proteopedia

Current revision

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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