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1ygr

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Revision as of 16:48, 29 January 2020

Crystal structure of the tandem phosphatase domain of RPTP CD45

Structural highlights

1ygr is a 4 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
NonStd Res:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[PTPRC_HUMAN] T-B+ severe combined immunodeficiency due to CD45 deficiency. The disease is caused by mutations affecting the gene represented in this entry. Disease susceptibility may be associated with variations affecting the gene represented in this entry. [CD3Z_HUMAN] Defects in CD247 are the cause of immunodeficiency due to defect in CD3-zeta (CD3ZID) [MIM:610163]. An immunological deficiency characterized by T-cells impaired immune response to alloantigens, tetanus toxoid and mitogens.^[1]

Function

[PTPRC_HUMAN] Protein tyrosine-protein phosphatase required for T-cell activation through the antigen receptor. Acts as a positive regulator of T-cell coactivation upon binding to DPP4. The first PTPase domain has enzymatic activity, while the second one seems to affect the substrate specificity of the first one. Upon T-cell activation, recruits and dephosphorylates SKAP1 and FYN. Dephosphorylates LYN, and thereby modulates LYN activity (By similarity). [CD3Z_HUMAN] Probable role in assembly and expression of the TCR complex as well as signal transduction upon antigen triggering.

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

CD45 is the prototypic member of transmembrane receptor-like protein tyrosine phosphatases (RPTPs) and has essential roles in immune functions. The cytoplasmic region of CD45, like many other RPTPs, contains two homologous protein tyrosine phosphatase domains, active domain 1 (D1) and catalytically impaired domain 2 (D2). Here, we report crystal structure of the cytoplasmic D1D2 segment of human CD45 in native and phosphotyrosyl peptide-bound forms. The tertiary structures of D1 and D2 are very similar, but doubly phosphorylated CD3zeta immunoreceptor tyrosine-based activation motif peptide binds only the D1 active site. The D2 "active site" deviates from the other active sites significantly to the extent that excludes any possibility of catalytic activity. The relative orientation of D1 and D2 is very similar to that observed in leukocyte common antigen-related protein with both active sites in an open conformation and is restrained through an extensive network of hydrophobic interactions, hydrogen bonds, and salt bridges. This crystal structure is incompatible with the wedge model previously suggested for CD45 regulation.

Structural basis for the function and regulation of the receptor protein tyrosine phosphatase CD45.,Nam HJ, Poy F, Saito H, Frederick CA J Exp Med. 2005 Feb 7;201(3):441-52. Epub 2005 Jan 31. PMID:15684325^[2]

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

References

↑ Rieux-Laucat F, Hivroz C, Lim A, Mateo V, Pellier I, Selz F, Fischer A, Le Deist F. Inherited and somatic CD3zeta mutations in a patient with T-cell deficiency. N Engl J Med. 2006 May 4;354(18):1913-21. PMID:16672702 doi:354/18/1913
↑ Nam HJ, Poy F, Saito H, Frederick CA. Structural basis for the function and regulation of the receptor protein tyrosine phosphatase CD45. J Exp Med. 2005 Feb 7;201(3):441-52. Epub 2005 Jan 31. PMID:15684325 doi:10.1084/jem.20041890

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/1ygr"

@@ Line 1: / Line 1: @@
 ==Crystal structure of the tandem phosphatase domain of RPTP CD45==
-<StructureSection load='1ygr' size='340' side='right' caption='[[1ygr]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
+<StructureSection load='1ygr' size='340' side='right'caption='[[1ygr]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1ygr]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YGR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1YGR FirstGlance]. <br>
@@ Line 32: / Line 32: @@
 ==See Also==
-*[[CD3|CD3]]
+*[[CD3 3D structures|CD3 3D structures]]
 *[[Tyrosine phosphatase|Tyrosine phosphatase]]
 == References ==
@@ Line 39: / Line 39: @@
 </StructureSection>
 [[Category: Human]]
+[[Category: Large Structures]]
 [[Category: Frederick, C A]]
 [[Category: Nam, H J]]

1ygr

From Proteopedia

Revision as of 16:48, 29 January 2020

Crystal structure of the tandem phosphatase domain of RPTP CD45

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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