WD repeat domain 81
The information on this page was automatically extracted from online scientific databases.
From NCBI Gene:
This gene encodes a multi-domain transmembrane protein which is predominantly expressed in the brain and is thought to play a role in endolysosomal trafficking. Mutations in this gene are associated with an autosomal recessive form of a syndrome exhibiting cerebellar ataxia, cognitive disability, and disequilibrium (CAMRQ2). Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2017]
Functions as a negative regulator of the PI3 kinase/PI3K activity associated with endosomal membranes via BECN1, a core subunit of the PI3K complex. By modifying the phosphatidylinositol 3-phosphate/PtdInsP3 content of endosomal membranes may regulate endosome fusion, recycling, sorting and early to late endosome transport (PubMed:26783301). It is for instance, required for the delivery of cargos like BST2/tetherin from early to late endosome and thereby participates indirectly to their degradation by the lysosome (PubMed:27126989). May also play a role in aggrephagy, the macroautophagic degradation of ubiquitinated protein aggregates. In this process, may regulate the interaction of SQSTM1 with ubiquitinated proteins and also recruit MAP1LC3C (PubMed:28404643). May also be involved in maintenance of normal mitochondrial structure and organization.
From NCBI Gene:
- Cerebellar ataxia, mental retardation, and dysequilibrium syndrome 2
- HYDROCEPHALUS, CONGENITAL, 3, WITH BRAIN ANOMALIES
Cerebellar ataxia, mental retardation, and dysequilibrium syndrome 2 (CAMRQ2): A congenital cerebellar ataxia associated with cerebellar hypoplasia, mental retardation, and inability to walk bipedally, resulting in quadrupedal locomotion as a functional adaptation. Additional findings include generalized brain atrophy and mild hypoplasia of the corpus callosum. [MIM:610185]
Hydrocephalus, congenital, 3, with brain anomalies (HYC3): A form of congenital hydrocephalus, a disease characterized by onset in utero of enlarged ventricles due to accumulation of ventricular cerebrospinal fluid. HYC3 features include enlarged ventricles, hypoplastic or absent cerebellum, holoprosencephaly and Dandy-Walker malformation. Most patients die in utero or shortly after birth. HYC3 inheritance is autosomal recessive. [MIM:617967]