LIME1 is a family of eukaryotic transmembrane adaptors. It plays an important role in linking BCR stimulation to B-cell activation and is expressed in primary B cells. LIME localises to lipid rafts in T cells in response to TCR stimulation [1], and is phosphorylated by Lck and recruits signalling molecules such as Lck, PI3K, Grb2, Gads, and SHP-2 [2]. LIME acts as the transmembrane adaptor linking BCR-induced membrane-proximal signalling to B-cell activation [3].

1: LIME: a new membrane Raft-associated adaptor protein involved in CD4 and CD8 coreceptor signaling. Brdickova N, Brdicka T, Angelisova P, Horvath O, Spicka J, Hilgert I, Paces J, Simeoni L, Kliche S, Merten C, Schraven B, Horejsi V; J Exp Med. 2003;198:1453-1462. PMID:14610046

2: Transmembrane adaptor molecules: a new category of lymphoid-cell markers. Tedoldi S, Paterson JC, Hansmann ML, Natkunam Y, Rudiger T, Angelisova P, Du MQ, Roberton H, Roncador G, Sanchez L, Pozzobon M, Masir N, Barry R, Pileri S, Mason DY, Marafioti T, Horejsi V; Blood. 2006;107:213-221. PMID:16160011

3: LIME acts as a transmembrane adapter mediating BCR-dependent B-cell activation. Ahn E, Lee H, Yun Y; Blood. 2006;107:1521-1527.CC This family of proteins is found in eukaryotes. Proteins in this PMID:16249387