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4v1p

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Revision as of 14:17, 27 April 2017

BTN3 Structure

Structural highlights

4v1p 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.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[BT3A1_HUMAN] Plays a role in T-cell activation and in the adaptive immune response. Regulates the proliferation of activated T-cells. Regulates the release of cytokines and IFNG by activated T-cells. Mediates the response of T-cells toward infected and transformed cells that are characterized by high levels of phosphorylated metabolites, such as isopentenyl pyrophosphate.^[1] ^[2] ^[3] ^[4]

Publication Abstract from PubMed

The three butyrophilin BTN3A molecules, BTN3A1, BTN3A2, and BTN3A3, are members of the B7/butyrophilin-like group of Ig superfamily receptors, which modulate the function of T cells. BTN3A1 controls activation of human Vgamma9/Vdelta2 T cells by direct or indirect presentation of self and nonself phosphoantigens (pAg). We show that the microbial metabolite (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate binds to the intracellular B30.2 domain of BTN3A1 with an affinity of 1.1 muM, whereas the endogenous pAg isopentenyl pyrophosphate binds with an affinity of 627 muM. Coculture experiments using knockdown cell lines showed that in addition to BTN3A1, BTN3A2 and BTN3A3 transmit activation signals to human gammadelta T cells in response to (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate and the aminobisphosphonate drug zoledronate that causes intracellular accumulation of isopentenyl pyrophosphate. The plakin family member periplakin, identified in yeast two-hybrid assays, interacted with a membrane-proximal di-leucine motif, located proximal to the B30.2 domain in the BTN3A1 cytoplasmic tail. Periplakin did not interact with BTN3A2 or BTN3A3, which do not contain the di-leucine motif. Re-expression into a BTN3A1 knockdown line of wild-type BTN3A1, but not of a variant lacking the periplakin binding motif, BTN3A1Deltaexon5, restored gammadelta T cell responses, demonstrating a functional role for periplakin interaction. These data, together with the widespread expression in epithelial cells, tumor tissues, and macrophages detected using BTN3A antiserum, are consistent with complex functions for BTN3A molecules in tissue immune surveillance and infection, linking the cell cytoskeleton to gammadelta T cell activation by indirectly presenting pAg to the Vgamma9/Vdelta2 TCR.

Activation of human gammadelta T cells by cytosolic interactions of BTN3A1 with soluble phosphoantigens and the cytoskeletal adaptor periplakin.,Rhodes DA, Chen HC, Price AJ, Keeble AH, Davey MS, James LC, Eberl M, Trowsdale J J Immunol. 2015 Mar 1;194(5):2390-8. doi: 10.4049/jimmunol.1401064. Epub 2015 Jan, 30. PMID:25637025^[5]

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

References

↑ Cubillos-Ruiz JR, Martinez D, Scarlett UK, Rutkowski MR, Nesbeth YC, Camposeco-Jacobs AL, Conejo-Garcia JR. CD277 is a negative co-stimulatory molecule universally expressed by ovarian cancer microenvironmental cells. Oncotarget. 2010 Sep;1(5):329-38. PMID:21113407
↑ Messal N, Mamessier E, Sylvain A, Celis-Gutierrez J, Thibult ML, Chetaille B, Firaguay G, Pastor S, Guillaume Y, Wang Q, Hirsch I, Nunes JA, Olive D. Differential role for CD277 as a co-regulator of the immune signal in T and NK cells. Eur J Immunol. 2011 Dec;41(12):3443-54. doi: 10.1002/eji.201141404. Epub 2011 Nov, 3. PMID:21918970 doi:10.1002/eji.201141404
↑ Harly C, Guillaume Y, Nedellec S, Peigne CM, Monkkonen H, Monkkonen J, Li J, Kuball J, Adams EJ, Netzer S, Dechanet-Merville J, Leger A, Herrmann T, Breathnach R, Olive D, Bonneville M, Scotet E. Key implication of CD277/butyrophilin-3 (BTN3A) in cellular stress sensing by a major human gammadelta T-cell subset. Blood. 2012 Sep 13;120(11):2269-79. doi: 10.1182/blood-2012-05-430470. Epub 2012 , Jul 5. PMID:22767497 doi:10.1182/blood-2012-05-430470
↑ Palakodeti A, Sandstrom A, Sundaresan L, Harly C, Nedellec S, Olive D, Scotet E, Bonneville M, Adams EJ. The molecular basis for modulation of human Vgamma9Vdelta2 T cell responses by CD277/butyrophilin-3 (BTN3A)-specific antibodies. J Biol Chem. 2012 Sep 21;287(39):32780-90. Epub 2012 Jul 30. PMID:22846996 doi:10.1074/jbc.M112.384354
↑ Rhodes DA, Chen HC, Price AJ, Keeble AH, Davey MS, James LC, Eberl M, Trowsdale J. Activation of human gammadelta T cells by cytosolic interactions of BTN3A1 with soluble phosphoantigens and the cytoskeletal adaptor periplakin. J Immunol. 2015 Mar 1;194(5):2390-8. doi: 10.4049/jimmunol.1401064. Epub 2015 Jan, 30. PMID:25637025 doi:http://dx.doi.org/10.4049/jimmunol.1401064

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4v1p"

Categories: Homo sapiens | James, L C | Immune signalling | Immune system

@@ Line 1: / Line 1: @@
 ==BTN3 Structure==
 <StructureSection load='4v1p' size='340' side='right' caption='[[4v1p]], [[Resolution|resolution]] 2.04&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4v1p]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4V1P OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4V1P FirstGlance]. <br>
-</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=4v1p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4v1p OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4v1p RCSB], [http://www.ebi.ac.uk/pdbsum/4v1p PDBsum]</span></td></tr>
+</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=4v1p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4v1p OCA], [http://pdbe.org/4v1p PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4v1p RCSB], [http://www.ebi.ac.uk/pdbsum/4v1p PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4v1p ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 15: / Line 16: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4v1p" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4v1p

From Proteopedia

Revision as of 14:17, 27 April 2017

BTN3 Structure

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

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