Aliases for KPTN Gene
External Ids for KPTN Gene
Previous GeneCards Identifiers for KPTN Gene
This gene encodes a filamentous-actin-associated protein, which is involved in actin dynamics and plays an important role in neuromorphogenesis. This protein is part of the KICSTOR protein complex that localizes to lysosomes. Mutations in this gene result in an autosomal recessive form of intellectual disability. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jul 2017]
GeneCards Summary for KPTN Gene
KPTN (Kaptin, Actin Binding Protein) is a Protein Coding gene. Diseases associated with KPTN include Mental Retardation, Autosomal Recessive 41 and Pervasive Developmental Disorder. GO annotations related to this gene include actin binding.
UniProtKB/Swiss-Prot for KPTN Gene
As part of the KICSTOR complex functions in the amino acid-sensing branch of the TORC1 signaling pathway. Recruits, in an amino acid-independent manner, the GATOR1 complex to the lysosomal membranes and allows its interaction with GATOR2 and the RAG GTPases. Functions upstream of the RAG GTPases and is required to negatively regulate mTORC1 signaling in absence of amino acids. In absence of the KICSTOR complex mTORC1 is constitutively localized to the lysosome and activated. The KICSTOR complex is also probably involved in the regulation of mTORC1 by glucose.