The autoimmunity risk variant LYP-W620 cooperates with CSK in the regulation of TCR signaling.

The protein tyrosine phosphatase LYP, a key regulator of TCR signaling, presents a single nucleotide polymorphism, C1858T, associated with several autoimmune diseases such as type I diabetes, rheumatoid arthritis, and lupus. This polymorphism changes an R by a W in the P1 Pro rich motif of LYP, whic...

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Main Authors: María Luisa de la Puerta, Antonio G Trinidad, María del Carmen Rodríguez, José María de Pereda, Mariano Sánchez Crespo, Yolanda Bayón, Andrés Alonso
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3554717?pdf=render
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author María Luisa de la Puerta
Antonio G Trinidad
María del Carmen Rodríguez
José María de Pereda
Mariano Sánchez Crespo
Yolanda Bayón
Andrés Alonso
author_facet María Luisa de la Puerta
Antonio G Trinidad
María del Carmen Rodríguez
José María de Pereda
Mariano Sánchez Crespo
Yolanda Bayón
Andrés Alonso
author_sort María Luisa de la Puerta
collection DOAJ
description The protein tyrosine phosphatase LYP, a key regulator of TCR signaling, presents a single nucleotide polymorphism, C1858T, associated with several autoimmune diseases such as type I diabetes, rheumatoid arthritis, and lupus. This polymorphism changes an R by a W in the P1 Pro rich motif of LYP, which binds to CSK SH3 domain, another negative regulator of TCR signaling. Based on the analysis of the mouse homologue, Pep, it was proposed that LYP and CSK bind constitutively to inhibit LCK and subsequently TCR signaling. The detailed study of LYP/CSK interaction, here presented, showed that LYP/CSK interaction was inducible upon TCR stimulation, and involved LYP P1 and P2 motifs, and CSK SH3 and SH2 domains. Abrogating LYP/CSK interaction did not preclude the regulation of TCR signaling by these proteins.
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spelling doaj.art-12163d7910a543449746a13f71d307362022-12-21T18:53:02ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0181e5456910.1371/journal.pone.0054569The autoimmunity risk variant LYP-W620 cooperates with CSK in the regulation of TCR signaling.María Luisa de la PuertaAntonio G TrinidadMaría del Carmen RodríguezJosé María de PeredaMariano Sánchez CrespoYolanda BayónAndrés AlonsoThe protein tyrosine phosphatase LYP, a key regulator of TCR signaling, presents a single nucleotide polymorphism, C1858T, associated with several autoimmune diseases such as type I diabetes, rheumatoid arthritis, and lupus. This polymorphism changes an R by a W in the P1 Pro rich motif of LYP, which binds to CSK SH3 domain, another negative regulator of TCR signaling. Based on the analysis of the mouse homologue, Pep, it was proposed that LYP and CSK bind constitutively to inhibit LCK and subsequently TCR signaling. The detailed study of LYP/CSK interaction, here presented, showed that LYP/CSK interaction was inducible upon TCR stimulation, and involved LYP P1 and P2 motifs, and CSK SH3 and SH2 domains. Abrogating LYP/CSK interaction did not preclude the regulation of TCR signaling by these proteins.http://europepmc.org/articles/PMC3554717?pdf=render
spellingShingle María Luisa de la Puerta
Antonio G Trinidad
María del Carmen Rodríguez
José María de Pereda
Mariano Sánchez Crespo
Yolanda Bayón
Andrés Alonso
The autoimmunity risk variant LYP-W620 cooperates with CSK in the regulation of TCR signaling.
PLoS ONE
title The autoimmunity risk variant LYP-W620 cooperates with CSK in the regulation of TCR signaling.
title_full The autoimmunity risk variant LYP-W620 cooperates with CSK in the regulation of TCR signaling.
title_fullStr The autoimmunity risk variant LYP-W620 cooperates with CSK in the regulation of TCR signaling.
title_full_unstemmed The autoimmunity risk variant LYP-W620 cooperates with CSK in the regulation of TCR signaling.
title_short The autoimmunity risk variant LYP-W620 cooperates with CSK in the regulation of TCR signaling.
title_sort autoimmunity risk variant lyp w620 cooperates with csk in the regulation of tcr signaling
url http://europepmc.org/articles/PMC3554717?pdf=render
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