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ARAP, a Novel Adaptor Protein, Is Required for TCR Signaling and Integrin-Mediated Adhesion
- Title
- ARAP, a Novel Adaptor Protein, Is Required for TCR Signaling and Integrin-Mediated Adhesion
- Authors
- Jung, Seung Hee; Yoo, Eun Hye; Yu, Mi Jin; Song, Hyeon Myeong; Kang, Hee Yoon; Cho, Je-Yoel; Lee, Jong Ran
- Ewha Authors
- 이종란
- SCOPUS Author ID
- 이종란
- Issue Date
- 2016
- Journal Title
- JOURNAL OF IMMUNOLOGY
- ISSN
- 0022-1767
1550-6606
- Citation
- JOURNAL OF IMMUNOLOGY vol. 197, no. 3, pp. 942 - 952
- Publisher
- AMER ASSOC IMMUNOLOGISTS
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- 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.
- DOI
- 10.4049/jimmunol.1501913
- Appears in Collections:
- 자연과학대학 > 생명과학전공 > Journal papers
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