| 22115 | O54863 | TSSK2_MOUSE | Testis-specific serine/threonine-protein kinase 2 (TSK-2) (TSK2) (TSSK-2) (Testis-specific kinase 2) (EC 2.7.11.1) (Serine/threonine-protein kinase 22B) | DISRUPTION PHENOTYPE | Male mice lacking Tssk1b and Tssk2 are sterile due to haploinsufficiency. chimeras show failure to form elongated spermatids, apoptosis of spermatocytes and spermatids, and the appearance of numerous round cells in the epididymal lumen. Elongating spermatids possess a collapsed mitochondrial sheath. {ECO:0000269|PubMed:18533145, ECO:0000269|PubMed:20053632}. |