SH2B adapter protein 2

Definition:

Adapter protein for several members of the tyrosine kinase receptor family. Involved in multiple signaling pathways. May be involved in coupling from immunoreceptor to Ras signaling. Acts as a negative regulator of cytokine signaling in collaboration with CBL. Binds to EPOR and suppresses EPO-induced STAT5 activation, possibly through a masking effect on STAT5 docking sites in EPOR. Suppresses PDGF-induced mitogenesis. May induce cytoskeletal reorganization via interaction with VAV3.

References:

[1]. Sirano Dhe-Paganon, et al. A phenylalanine zipper mediates APS dimerization. Nat Struct Mol Biol. 2004 Oct;11(10):968-74. [Content Brief]

[2]. Naoyuki Yabana, et al. Adaptor protein APS binds the NH2-terminal autoinhibitory domain of guanine nucleotide exchange factor Vav3 and augments its activity. Oncogene. 2002 Oct 31;21(50):7720-9. [Content Brief]

[3]. M Yokouchi, et al. APS, an adaptor protein containing PH and SH2 domains, is associated with the PDGF receptor and c-Cbl and inhibits PDGF-induced mitogenesis. Oncogene. 1999 Jan 21;18(3):759-67. [Content Brief]

[4]. T Wakioka, et al. APS, an adaptor protein containing Pleckstrin homology (PH) and Src homology-2 (SH2) domains inhibits the JAK-STAT pathway in collaboration with c-Cbl. Leukemia. 1999 May;13(5):760-7. [Content Brief]

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