Functions as a calcium- and diacylglycerol (DAG)-regulated nucleotide exchange factor specifically activating Ras through the exchange of bound GDP for GTP (PubMed:9789079, PubMed:9582122). Activates the Erk/MAP kinase cascade. Regulates T-cell/B-cell development, homeostasis and differentiation by coupling T-lymphocyte/B-lymphocyte antigen receptors to Ras. Regulates NK cell cytotoxicity and ITAM-dependent cytokine production by activation of Ras-mediated ERK and JNK pathways (By similarity). Functions in mast cell degranulation and cytokine secretion, regulating FcERI-evoked allergic responses. May also function in differentiation of other cell types. Proto-oncogene, which promotes T-cell lymphomagenesis when its expression is deregulated (By similarity).

Belongs to the RASGRP family.

795 amino acids

MGTLGKAREAPRKPCHGSRAGPKGRLEAKSTNSPLPAQPSLAQITQFRMMVSLGHLAKGASLDDLIDSCIQSFDADGNLCRSNQLLQVMLTMHRIIISSAELLQKLMNLYKDALEKNSPGICLKICYFVRYWITEFWIMFKMDASLTSTMEEFQDLVKANGEESHCHLIDTTQINSRDWSRKLTQRIKSNTSKKRKVSLLFDHLEPEELSEHLTYLEFKSFRRISFSDYQNYLVNSCVKENPTMERSIALCNGISQWVQLMVLSRPTPQLRAEVFIKFIHVAQKLHQLQNFNTLMAVIGGLCHSSISRLKETSSHVPHEINKVLGEMTELLSSCRNYDNYRRAYGECTHFKIPILGVHLKDLISLYEAMPDYLEDGKVNVQKLLALYNHINELVQLQDVAPPLDANKDLVHLLTLSLDLYYTEDEIYELSYAREPRNHRAPPLTPSKPPVVVDWASGVSPKPDPKTISKHVQRMVDSVFKNYDLDQDGYISQEEFEKIAASFPFSFCVMDKDREGLISRDEITAYFMRASSIYSKLGLGFPHNFQETTYLKPTFCDNCAGFLWGVIKQGYRCKDCGMNCHKQCKDLVVFECKKRSKSPAVSTENISSVVPMSTLCPLGTKDLLHAPEEGSFIFQNGEVVDHSEESKDRTIMLLGVSSQKISVRLKRTVAHKTTQTESFPWVGGEMPPGHFVLTSPRKSAQGALYVHSPASPCPSPALVRKRAFVKWENKESLIKPKPELHLRLRTYQELEQEVNTLRADNDALKIQLKYAQKQIESLQLGKSNHVLAQMDHGDGT

90.2 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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