ITGAL（integrin subunit alpha L），癌症关联基因，基因ID：3683，ITGAL编码整合素αL链整合素是由α链和β链组成的异二聚体膜蛋白含有α整合素的I-结构域与β2链（ITGB2）结合形成整合素淋巴细胞功能相关抗原-1（LFA-1），在所有白细胞上表达LFA-1通过与其配体ICAMs 1-3（细胞间粘附分子1-3）的相互作用，在白细胞间粘附中发挥中心作用，并在淋巴细胞共刺激信号转导中发挥作用已经发现了两个编码不同亚型的转录变体。[由RefSeq提供，2008年7月]ITGAL encodes the integrin alpha L chain. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. This I-domain containing alpha integrin combines with the beta 2 chain (ITGB2) to form the integrin lymphocyte function-associated antigen-1 (LFA-1)， which is expressed on all leukocytes. LFA-1 plays a central role in leukocyte intercellular adhesion through interactions with its ligands， ICAMs 1-3 (intercellular adhesion molecules 1 through 3)， and also functions in lymphocyte costimulatory signaling. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq， Jul 2008]。