3pvm: Difference between revisions

<StructureSection load='3pvm' size='340' side='right' caption='[[3pvm]], [[Resolution|resolution]] 4.30&Aring;' scene=''>

<table><tr><td colspan='2'>[[3pvm]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Naja_kaouthia Naja kaouthia]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PVM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3PVM FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3prx|3prx]]</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=3pvm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pvm OCA], [http://pdbe.org/3pvm PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3pvm RCSB], [http://www.ebi.ac.uk/pdbsum/3pvm PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3pvm ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/CO5_HUMAN CO5_HUMAN]] Defects in C5 are the cause of complement component 5 deficiency (C5D) [MIM:[http://omim.org/entry/609536 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).  

[[http://www.uniprot.org/uniprot/CO5_HUMAN 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). [[http://www.uniprot.org/uniprot/CO3_NAJKA CO3_NAJKA]] Complement-activating protein in cobra venom. It is a structural and functional analog of complement component C3b, the activated form of C3. It binds factor B (CFB), which is subsequently cleaved by factor D (CFD) to form the bimolecular complex CVF/Bb. CVF/Bb is a C3/C5 convertase that cleaves both complement components C3 and C5. Structurally, it resembles the C3b degradation product C3c, which is not able to form a C3/C5 convertase. Unlike C3b/Bb, CVF/Bb is a stable complex and completely resistant to the actions of complement regulatory factors H (CFH) and I (CFI). Therefore, CVF continuously activates complement resulting in the depletion of complement activity.  

[[Category: Andersen, G R]]

[[Category: Andersen, K R]]

[[Category: Braren, I]]

[[Category: Laursen, N S]]

[[Category: Sottrup-Jensen, L]]

[[Category: Spillner, E]]

[[Category: Immune system]]