This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

3hqb

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:44, 1 November 2017

Crystal structure of human desarg-C5A

Structural highlights

3hqb is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	3hqa
Gene:	C5, CPAMD4 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[CO5_HUMAN] Defects in C5 are the cause of complement component 5 deficiency (C5D) [MIM:609536]. A rare defect of the complement classical pathway associated with susceptibility to severe recurrent infections, predominantly by Neisseria gonorrhoeae or Neisseria meningitidis. Note=An association study of C5 haplotypes and genotypes in individuals with chronic hepatitis C virus infection shows that individuals homozygous for the C5_1 haplotype have a significantly higher stage of liver fibrosis than individuals carrying at least 1 other allele (PubMed:15995705).

Function

[CO5_HUMAN] Activation of C5 by a C5 convertase initiates the spontaneous assembly of the late complement components, C5-C9, into the membrane attack complex. C5b has a transient binding site for C6. The C5b-C6 complex is the foundation upon which the lytic complex is assembled. Derived from proteolytic degradation of complement C5, C5 anaphylatoxin is a mediator of local inflammatory process. It induces the contraction of smooth muscle, increases vascular permeability and causes histamine release from mast cells and basophilic leukocytes. C5a also stimulates the locomotion of polymorphonuclear leukocytes (chemokinesis) and direct their migration toward sites of inflammation (chemotaxis).

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

The anaphylatoxin C5a is derived from the complement component C5 during activation of the complement cascade. It is an important component in the pathogenesis of a number of inflammatory diseases. NMR structures of human and porcine C5a have been reported; these revealed a four-helix bundle stabilized by three disulfide bonds. The crystal structure of human desArg-C5a has now been determined in two crystal forms. Surprisingly, the protein crystallizes as a dimer and each monomer in the dimer has a three-helix core instead of the four-helix bundle noted in the NMR structure determinations. Furthermore, the N-terminal helices of the two monomers occupy different positions relative to the three-helix core and are completely different from the NMR structures. The physiological significance of these structural differences is unknown.

Structure of human desArg-C5a.,Cook WJ, Galakatos N, Boyar WC, Walter RL, Ealick SE Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):190-7. Epub 2010 Jan 22. PMID:20124699^[1]

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

References

↑ Cook WJ, Galakatos N, Boyar WC, Walter RL, Ealick SE. Structure of human desArg-C5a. Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):190-7. Epub 2010 Jan 22. PMID:20124699 doi:10.1107/S0907444909049051

1 Structural highlights
2 Disease
3 Function
4 Evolutionary Conservation
5 Publication Abstract from PubMed
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==Crystal structure of human desarg-C5A==
 <StructureSection load='3hqb' size='340' side='right' caption='[[3hqb]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3hqa|3hqa]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">C5, CPAMD4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3hqb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hqb OCA], [http://pdbe.org/3hqb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3hqb RCSB], [http://www.ebi.ac.uk/pdbsum/3hqb 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=3hqb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hqb OCA], [http://pdbe.org/3hqb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3hqb RCSB], [http://www.ebi.ac.uk/pdbsum/3hqb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3hqb ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 30: / Line 31: @@
 </div>
 <div class="pdbe-citations 3hqb" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Complement C5|Complement C5]]
 == References ==
 <references/>

3hqb

From Proteopedia

Revision as of 07:44, 1 November 2017

Crystal structure of human desarg-C5A

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox