Aliases for AP4B1 Gene
External Ids for AP4B1 Gene
Previous HGNC Symbols for AP4B1 Gene
Previous GeneCards Identifiers for AP4B1 Gene
This gene encodes a subunit of a heterotetrameric adapter-like complex 4 that is involved in targeting proteins from the trans-Golgi network to the endosomal-lysosomal system. Mutations in this gene are associated with cerebral palsy spastic quadriplegic type 5 (CPSQ5) disorder. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]
GeneCards Summary for AP4B1 Gene
AP4B1 (Adaptor Related Protein Complex 4 Subunit Beta 1) is a Protein Coding gene. Diseases associated with AP4B1 include Spastic Paraplegia 47, Autosomal Recessive and Spastic Paraplegia 51, Autosomal Recessive. Among its related pathways are Lysosome and Clathrin derived vesicle budding. Gene Ontology (GO) annotations related to this gene include binding and protein transporter activity. An important paralog of this gene is AP1B1.
UniProtKB/Swiss-Prot Summary for AP4B1 Gene
Component of the adaptor protein complex 4 (AP-4). Adaptor protein complexes are vesicle coat components involved both in vesicle formation and cargo selection. They control the vesicular transport of proteins in different trafficking pathways (PubMed:10066790, PubMed:10436028). AP-4 forms a non clathrin-associated coat on vesicles departing the trans-Golgi network (TGN) and may be involved in the targeting of proteins from the trans-Golgi network (TGN) to the endosomal-lysosomal system. It is also involved in protein sorting to the basolateral membrane in epithelial cells and the proper asymmetric localization of somatodendritic proteins in neurons. AP-4 is involved in the recognition and binding of tyrosine-based sorting signals found in the cytoplasmic part of cargos, but may also recognize other types of sorting signal (Probable).