赖氨酰氧化酶(LOX)是一个具有铜结合部位的胺氧化酶,能将伯胺氧化成醛,在细胞外基质的形成和修复过程中起着十分重要的作用。LOX通过氧化胶原和弹性蛋白的赖氨酸残基来起始这些纤维性蛋白的共价交联,从而稳定细胞外基质。LOX功能非常广泛,除了保持细胞外基质内环境稳定外,还能够抑制Ras癌基因诱导的细胞表型的转变,以及抑制肿瘤的形成。
Lysyl oxidase (LOX) is a copper-containing amine oxidase that oxidizes primary amine substrates to reactive aldehydes. It plays an essential role in the formation and repair of the extracellular matrix (ECM) by oxidizing lysine residues in elastin and collagen, thereby initiating the formation of covalent crosslinkages which stabilize these fibrous proteins. As a multifnnctional enzyme, LOX can also inhibit the transformation of cell phenotypes mediated by Ras gene and the tumorigenesis