There are two mammalian homologue of Drosophila tumor suppressor Lats (large tumor suppressor, also known as Warts): LATS1 and LATS2. Lats/Warts is a serine/threonine-protein kinase that negatively regulates YAP1 (Drosophila Yorkie (Yki) homologue) in the Hippo signaling pathway, which plays a pivotal role in organ size control and tumor suppression by restricting proliferation and promoting apoptosis [, ]. This entry represents LATS1 from mammals. During cell division, LATS1 interacts with MOB1A and serves as a mitotic exit network kinase [].
STKs (serine/threonine-protein kinases) catalyse the transfer of the gamma-phosphoryl group from ATP to serine/threonine residues on protein substrates. LATS1 functions as a tumour suppressor and is implicated in cell cycle regulation []. Inactivation of LATS1 in mice results in the development of various tumours, including sarcomas and ovarian cancer []. Promoter methylation, loss of heterozygosity, and missense mutations targeting the LATS1 gene have also been found in human sarcomas and ovarian cancers. In addition, decreased expression of LATS1 is associated with an aggressive phenotype and poor prognosis [. LATS1 induces G2 arrest and promotes cytokinesis. It may be a component of the mitotic exit network in higher eukaryotes [, , ].
There are two mammalian homologue of Drosophila tumor suppressor Lats (large tumor suppressor, also known as Warts): LATS1 and LATS2. Lats/Warts is a serine/threonine-protein kinase that negatively regulates YAP1 (Drosophila Yorkie (Yki) homologue) in the Hippo signaling pathway, which plays a pivotal role in organ size control and tumor suppression by restricting proliferation and promoting apoptosis [, ]. This entry represents LATS2, which plays an important part in centrosome duplication, maintenance of mitotic fidelity and genomic stability []. This entry also includes Warts from Drosophila melanogaster which is a negative regulator of Yorkie (Yki) in the Hippo/SWH (Sav/Wts/Hpo) signalling pathway that plays a pivotal role in organ size control and tumour suppression by restricting proliferation and promoting apoptosis [].
