1xiw

From Proteopedia

(Difference between revisions)

Revision as of 10:01, 6 January 2021

Crystal structure of human CD3-e/d dimer in complex with a UCHT1 single-chain antibody fragment

Structural highlights

1xiw is a 8 chain structure with sequence from Human and Lk3 transgenic mice. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	CD3E, T3E (HUMAN), CD3D, T3D (HUMAN), UCHT1 (LK3 transgenic mice)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[CD3D_HUMAN] Defects in CD3D are a cause of severe combined immunodeficiency autosomal recessive T-cell-negative/B-cell-positive/NK-cell-positive (T(-)B(+)NK(+) SCID) [MIM:608971]. A form of severe combined immunodeficiency (SCID), a genetically and clinically heterogeneous group of rare congenital disorders characterized by impairment of both humoral and cell-mediated immunity, leukopenia, and low or absent antibody levels. Patients present in infancy recurrent, persistent infections by opportunistic organisms. The common characteristic of all types of SCID is absence of T-cell-mediated cellular immunity due to a defect in T-cell development.^[1]

Function

[CD3E_HUMAN] The CD3 complex mediates signal transduction. [CD3D_HUMAN] The CD3 complex mediates signal transduction.

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 alpha/beta T cell receptor complex transmits signals from MHC/peptide antigens through a set of constitutively associated signaling molecules, including CD3-epsilon/gamma and CD3-epsilon/delta. We report the crystal structure at 1.9-A resolution of a complex between a human CD3-epsilon/delta ectodomain heterodimer and a single-chain fragment of the UCHT1 antibody. CD3-epsilon/delta and CD3-epsilon/gamma share a conserved interface between the Ig-fold ectodomains, with parallel packing of the two G strands. CD3-delta has a more electronegative surface and a more compact Ig fold than CD3-gamma; thus, the two CD3 heterodimers have distinctly different molecular surfaces. The UCHT1 antibody binds near an acidic region of CD3-epsilon opposite the dimer interface, occluding this region from direct interaction with the TCR. This immunodominant epitope may be a uniquely accessible surface in the TCR/CD3 complex, because there is overlap between the binding site of the UCHT1 and OKT3 antibodies. Determination of the CD3-epsilon/delta structure completes the set of TCR/CD3 globular ectodomains and contributes information about exposed CD3 surfaces.

Crystal structure of a human CD3-epsilon/delta dimer in complex with a UCHT1 single-chain antibody fragment.,Arnett KL, Harrison SC, Wiley DC Proc Natl Acad Sci U S A. 2004 Nov 16;101(46):16268-73. Epub 2004 Nov 8. PMID:15534202^[2]

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

References

↑ Dadi HK, Simon AJ, Roifman CM. Effect of CD3delta deficiency on maturation of alpha/beta and gamma/delta T-cell lineages in severe combined immunodeficiency. N Engl J Med. 2003 Nov 6;349(19):1821-8. PMID:14602880 doi:10.1056/NEJMoa031178
↑ Arnett KL, Harrison SC, Wiley DC. Crystal structure of a human CD3-epsilon/delta dimer in complex with a UCHT1 single-chain antibody fragment. Proc Natl Acad Sci U S A. 2004 Nov 16;101(46):16268-73. Epub 2004 Nov 8. PMID:15534202

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1xiw"

@@ Line 1: / Line 1: @@
 ==Crystal structure of human CD3-e/d dimer in complex with a UCHT1 single-chain antibody fragment==
-<StructureSection load='1xiw' size='340' side='right' caption='[[1xiw]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
+<StructureSection load='1xiw' size='340' side='right'caption='[[1xiw]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1xiw]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human] and [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XIW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1XIW FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1xiw]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human] and [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XIW OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1XIW FirstGlance]. <br>
 </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CD3E, T3E ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), CD3D, T3D ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), UCHT1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</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=1xiw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xiw OCA], [http://pdbe.org/1xiw PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1xiw RCSB], [http://www.ebi.ac.uk/pdbsum/1xiw PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1xiw ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1xiw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xiw OCA], [http://pdbe.org/1xiw PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1xiw RCSB], [http://www.ebi.ac.uk/pdbsum/1xiw PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1xiw ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 32: / Line 32: @@
 ==See Also==
-*[[CD3|CD3]]
+*[[CD3 3D structures|CD3 3D structures]]
 == References ==
 <references/>
@@ Line 38: / Line 38: @@
 </StructureSection>
 [[Category: Human]]
+[[Category: Large Structures]]
 [[Category: Lk3 transgenic mice]]
 [[Category: Arnett, K L]]

1xiw

From Proteopedia

Revision as of 10:01, 6 January 2021

Crystal structure of human CD3-e/d dimer in complex with a UCHT1 single-chain antibody fragment

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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