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Rabbit Anti-PIST/FITC Conjugated antibody
background:
PIST (PDZ protein interacting specifically with TC10), also known as GOPC (golgi associated PDZ and coiled-coil motif containing), CAL or FIG, is a 462 amino acid protein that localizes to the cytoplasm, as well as to the membrane of the golgi apparatus and to the cell junction. Expressed ubiquitously and containing one PDZ (DHR) domain, PIST functions as a homooligomer that interacts with a variety of proteins and plays a role in intracellular protein trafficking and degradation. Additionally, PIST is thought to regulate ionic currents via membrane channel modification and may also play a role in autophagy. Chromosomal aberrations in the gene encoding PIST are found in glioblastoma multiform (GBM), a common and aggressive form of brain tumor, suggesting a role for mutated PIST in carcinogenesis. Three isoforms of PIST exist due to alternative splicing events.
Function:
Plays a role in intracellular protein trafficking and degradation. May regulate CFTR chloride currents and acid-induced ACCN3 currents by modulating cell surface expression of both channels. May also regulate the intracellular trafficking of the ADR1B receptor. May play a role in autophagy. Overexpression results in CFTR intracellular retention and degradation in the lysosomes.
Subunit:
Homooligomer. Interacts with FZD5, FZD8, GRID2, BECN1, CSPG5 and CLCN3. May interact with CACNG2 (By similarity). Interacts with STX6, CFTR, ASIC3, GOLGA3, NLGN1 and RHOQ.
Subcellular Location:
Cytoplasm. Golgi apparatus membrane. Golgi apparatus > trans-Golgi network membrane. Cell junction > synapse. Cell junction > synapse > postsynaptic cell membrane > postsynaptic density. Cell projection > dendrite. Enriched in synaptosomal and postsynaptic densities (PSD) fractions (By similarity). Expressed in cell bodies and dendrites of Purkinje cells (By similarity). Localized at the trans-Golgi network (TGN) of spermatids and the medulla of round spermatides.
Tissue Specificity:
Ubiquitously expressed.
DISEASE:
Note=A chromosomal aberration involving GOPC is found in a glioblastoma multiforme sample. An intra-chromosomal deletion del(6)(q21q21) is responsible for the formation of GOPSLCROS1 chimeric protein which has a constitutive receptor tyrosine kinase activity.
Similarity:
Contains 1 PDZ (DHR) domain.
Database links:
Entrez Gene: 57120 Human
Entrez Gene: 94221 Mouse
Entrez Gene: 309774 Rat
Omim: 606845 Human
SwissProt: Q9HD26 Human
SwissProt: Q3TAF1 Mouse
SwissProt: Q8SH60 Mouse
Unigene: 191539 Human
Unigene: 390258 Mouse
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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