Lysyl Hydroxylase 2 (LH2) is an enzyme that plays a crucial role in the post-translational modification of collagen. It is involved in the hydroxylation of lysine residues in collagen molecules, which is essential for the stability of collagen triple helices and for the formation of cross-links that give collagen its structural integrity. LH2 is part of the lysyl hydroxylase family and is encoded by the PLOD2 gene.