Cited by 19Cell Adhesion Molecules ResearchT-cell and B-cell ImmunologyProtein Kinase Regulation and GTPase Signaling

ARAP, a Novel Adaptor Protein, Is Required for TCR Signaling and Integrin-Mediated Adhesion

Jung, Seung Hee, Yoo, Eun Hye, Yu, Mi Jin, Song, Hyeon Myeong, Kang, Hee Yoon, Cho, Je-Yoel, Lee, Jong Ran·2016·The Journal of Immunology

Abstract

A novel adaptor protein was identified by analyzing phosphotyrosine proteomes from membrane rafts of activated T cells. This protein showed sequence similarity to a well-known T cell adaptor protein, adhesion and degranulation-promoting adaptor protein (ADAP); therefore, the novel protein was designated activation-dependent, raft-recruited ADAP-like phosphoprotein (ARAP). Suppression of ARAP impaired the major signaling pathways downstream of the TCR. ARAP associated with the Src homology 2 domain of Src homology 2–containing leukocyte protein of 76 kDa via the phosphorylation of two YDDV motifs in response to TCR stimulation. ARAP also mediated integrin activation but was not involved in actin polymerization. The results of this study indicate that a novel T cell adaptor protein, ARAP, plays a unique role in T cells as a part of both the proximal activation signaling and inside–out signaling pathways that result in integrin activation and T cell adhesion.

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Crossref · 10.4049/jimmunol.1501913

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Authors
Jung, S. H., Yoo, E. H., Yu, M. J., Song, H. M., Kang, H. Y., Cho, J.-Y., & Lee, J. R.
Affiliations
  • Ewha Womans University (KR)
  • Seoul National University (KR)
Corresponding author
Lee, Jong Ran
Venue
The Journal of Immunology
Published
2016-08-01
Volume
197
Issue
3
Pages
942-952
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2470425466
Cited by
19
References
47
Citations by year
2026: 6 · 2025: 3 · 2024: 1 · 2023: 1 · 2022: 4 · 2021: 2 · 2020: 1 · 2019: 1
FWCI
0.32
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
adaptor proteins, T cell receptor signaling, integrin activation, T cell adhesion, lipid rafts, ADAP, SH2D1A, inside-out signaling, T cell activation
MeSH terms
Cell Adhesion, Cell Line, Humans, Immunohistochemistry, Lymphocyte Activation, Receptors, Antigen, T-Cell, T-Lymphocytes, Signal Transduction, Integrins, Polymerase Chain Reaction, Membrane Microdomains, Adaptor Proteins, Signal Transducing

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