The function of TMEM201 (transmembrane protein 201, ENSG00000188807) is as follows. Critical regulator of angiogenesis and endothelial cell (EC) migration (PubMed:35311970). Promotes the migration of endothelial cells, which is essential for angiogenesis (PubMed:35311970). Interacts with the linker of nucleoskeleton and cytoskeleton (LINC) complex, which plays a vital role in connecting the cell's cytoskeleton to the nuclear envelope (PubMed:35311970). This interaction is essential for maintaining cellular structure and facilitating the movement of endothelial cells, which is critical for proper vascular development (PubMed:35311970). Involved in nuclear movement during fibroblast polarization and migration (By similarity). Overexpression can recruit Ran GTPase to the nuclear periphery (PubMed:27541860). {ECO:0000250|UniProtKB:A2A8U2, ECO:0000269|PubMed:35311970, ECO:0000305|PubMed:27541860}. [Isoform 2]: May define a distinct membrane domain in the vicinity of the mitotic spindle (PubMed:19494128). Involved in the organization of the nuclear envelope implicating EMD, SUN1 and A-type lamina (PubMed:21610090). {ECO:0000269|PubMed:19494128, ECO:0000269|PubMed:21610090}.