1e4j

From Proteopedia

(Difference between revisions)

Revision as of 08:31, 24 December 2014

CRYSTAL STRUCTURE OF THE SOLUBLE HUMAN FC-GAMMA RECEPTOR III

Structural highlights

1e4j is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2fcb, 1e4k
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[FCG3B_HUMAN] Receptor for the Fc region of immunoglobulins gamma. Low affinity receptor. Binds complexed or aggregated IgG and also monomeric IgG. Contrary to III-A, is not capable to mediate antibody-dependent cytotoxicity and phagocytosis. May serve as a trap for immune complexes in the peripheral circulation which does not activate neutrophils.

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 immune response depends on the binding of opsonized antigens to cellular Fc receptors and the subsequent initiation of various cellular effector functions of the immune system. Here we describe the crystal structures of a soluble Fc gamma receptor (sFc gammaRIII, CD16), an Fc fragment from human IgG1 (hFc1) and their complex. In the 1:1 complex the receptor binds to the two halves of the Fc fragment in contact with residues of the C gamma2 domains and the hinge region. Upon complex formation the angle between the two sFc gammaRIII domains increases significantly and the Fc fragment opens asymmetrically. The high degree of amino acid conservation between sFc gammaRIII and other Fc receptors, and similarly between hFc1 and related immunoglobulins, suggest similar structures and modes of association. Thus the described structure is a model for immune complex recognition and helps to explain the vastly differing affinities of other Fc gammaR-IgG complexes and the Fc epsilonRI alpha-IgE complex.

The 3.2-A crystal structure of the human IgG1 Fc fragment-Fc gammaRIII complex.,Sondermann P, Huber R, Oosthuizen V, Jacob U Nature. 2000 Jul 20;406(6793):267-73. PMID:10917521^[1]

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

References

↑ Sondermann P, Huber R, Oosthuizen V, Jacob U. The 3.2-A crystal structure of the human IgG1 Fc fragment-Fc gammaRIII complex. Nature. 2000 Jul 20;406(6793):267-73. PMID:10917521 doi:http://dx.doi.org/10.1038/35018508

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/1e4j"

@@ Line 6: / Line 6: @@
 <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=1e4j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e4j OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1e4j RCSB], [http://www.ebi.ac.uk/pdbsum/1e4j PDBsum]</span></td></tr>
 </table>
+== Function ==
+[[http://www.uniprot.org/uniprot/FCG3B_HUMAN FCG3B_HUMAN]] Receptor for the Fc region of immunoglobulins gamma. Low affinity receptor. Binds complexed or aggregated IgG and also monomeric IgG. Contrary to III-A, is not capable to mediate antibody-dependent cytotoxicity and phagocytosis. May serve as a trap for immune complexes in the peripheral circulation which does not activate neutrophils.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]

1e4j

From Proteopedia

Revision as of 08:31, 24 December 2014

CRYSTAL STRUCTURE OF THE SOLUBLE HUMAN FC-GAMMA RECEPTOR III

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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