| 13388 | Q61483 | DLL1_MOUSE | Delta-like protein 1 (Drosophila Delta homolog 1) (Delta1) [Cleaved into: Dll1-soluble form (Dll1-EC) (Shed form); Dll1-derived cell-associated form (Dll1-TMIC) (Membrane-associated fragment); Dll1-intracellular form (Dll1-IC)] | DISRUPTION PHENOTYPE | Heterozygous Dll1 mice mutants are lighter and smaller, with altered fat to lean ratio and have increased blood pressure and a slight bradycardia. The animals have reduced cholesterol and triglyceride levels in blood (PubMed:19562077). Heterozygous Dll1 mice mutants and hypomorphic Dll1 mice mutants survive until birth, despite significantly reduced Notch activity (PubMed:17194759). Conditional knockout in inner ear leads to an early and excessive production of hair cells and have vestibular defects (PubMed:16495313). Conditional knockout in a small proportion of neural precursor cells reduces neurogenesis, whereas conditional knockout in a large proportion promotes premature neurogenesis (PubMed:18997111). Hypomorph Dll1 pups mutant survive until birth but are smaller. Conditional knockout Dll1 mice mutant in epidermis, survive and have no gross abnormalities (PubMed:17960184). Hypomorph Dll1 mice mutant survive until birth and have severe skeletal muscle defects (PubMed:19144989). Heterozygous Dll1 mutant embryos show disrupted muscle growth (PubMed:25220152). Conditional knockout Dll1 mice mutant show disorganization of Bergmann fibers, ectopic localization of Bergmann glia in the molecular layer and a reduction in the number of Bergmann glia (PubMed:23688253). {ECO:0000269|PubMed:16495313, ECO:0000269|PubMed:17194759, ECO:0000269|PubMed:17960184, ECO:0000269|PubMed:18997111, ECO:0000269|PubMed:19144989, ECO:0000269|PubMed:19562077, ECO:0000269|PubMed:23688253, ECO:0000269|PubMed:25220152}. |