background:
Chromosome 7 is about 158 milllion bases long, encodes over 1000 genes and makes up about 5% of the human genome. Chromosome 7 has been linked to Osteogenesis imperfecta, Pendred syndrome, Lissencephaly, Citrullinemia and Shwachman-Diamond syndrome. The deletion of a portion of the q arm of chromosome 7 is associated with Williams-Beuren syndrome, a condition characterized by mild mental retardation, an unusual comfort and friendliness with strangers and an elfin appearance. Deletions of portions of the q arm of chromosome 7 are also seen in a number of myeloid disorders including cases of acute myelogenous leukemia and myelodysplasia. KIAA0415 is a 807 amino acid protein that exists as three alternatively spliced isoforms. The KIAA0415 gene product has been provisionally designated KIAA0415 pending further characterization.
Function:
The function of SPG48 remains unknown. There are 3 named isoforms produced by alternative splicing.
Subunit:
Probably part of the adapter protein complex 5 (AP-5) atetramer composed of AP5B1, AP5M1, AP5S1 and AP5Z1. Interacts withZFYVE26 and SPG11.
Subcellular Location:
Cytoplasm. Nucleus. Note=By SDS-PAGE, 2isoforms have been observed, the shorter seems to be predominantlynuclear and the longer is mostly cytoplasmic (PubMed:20613862).
DISEASE:
Defects in AP5Z1 are the cause of spastic paraplegiaautosomal recessive type 48 (SPG48) [MIM:613647]. A form of spasticparaplegia, a neurodegenerative disorder characterized by a slow,gradual, progressive weakness and spasticity of the lower limbs.Rate of progression and the severity of symptoms are quitevariable. Initial symptoms may include difficulty with balance,weakness and stiffness in the legs, muscle spasms, and dragging thetoes when walking. In some forms of the disorder, bladder symptoms(such as incontinence) may appear, or the weakness and stiffnessmay spread to other parts of the body.
Database links:
UniProtKB/Swiss-Prot: O43299.2
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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