Voltage dependent anion selective channel protein 1 (VDAC/Porin) belongs to the eukaryotic mitochondrial porin family and forms a channel through the mitochondrial outer membrane and also the plasma membrane. The channel allows diffusion of small hydrophilic molecules; it adopts an open conformation at low or zero membrane potential and a closed conformation at potentials above 30-40 mV. The open state has a weak anion selectivity whereas the closed state is cation selective. VDAC/Porin expression is observed in the heart,liver and skeletal muscle.
Function:
Involved in the endosomal multivesicular bodies (MVB) pathway. MVBs contain intraluminal vesicles (ILVs) that are generated by invagination and scission from the limiting membrane of the endosome and mostly are delivered to lysosomes enabling degradation of membrane proteins, such as stimulated growth factor receptors, lysosomal enzymes and lipids. Thought to be a cofactor of VPS4A/B, which catalyzes disassembles membrane-associated ESCRT-III assemblies. Involved in the sorting and down-regulation of EGFR (By similarity). Involved in HISLV1 budding.
Subunit:
Interacts with VPS4B. Interacts with CHMP1B. Interacts with CHMP2A; the interaction probably involves the open conformation of (polymerized) CHMP2A. May interact with CHMP3. Interacts with CHMP5; the interaction involves soluble CHMP5. Interacts with IST1.
Subcellular Location:
Cytoplasm. Endosome membrane; Peripheral membrane protein (Probable).
Similarity:
Belongs to the VTA1 family.
SWISS:
P21796
Gene ID:
7416
Database links:
Entrez Gene: 41664 Chicken
Entrez Gene: 282119 Cow
Entrez Gene: 7416 Human
Entrez Gene: 22333 Mouse
Entrez Gene: 397010 Pig
Entrez Gene: 83529 Rat
Entrez Gene: 334582 Zebrafish
Omim: 604492 Human
电压依赖性阴离子通道VDAC是存在于线粒体外膜上的31kDa蛋白,能在膜上形成亲水性通道,调控阴离子、阳离子、ATP以及其他代谢物进出线粒体,在调节细胞代谢、维持胞内钙稳态,调节细胞凋亡和坏死等过程中发挥重要功能。
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Sample:
Jurkat(Human) Cell Lysate at 30 ug
Primary: Anti-VDAC (SL1461R) at 1/500 dilution
Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/20000 dilution
Predicted band size: 32 kD
Observed band size: 25 kD
Tissue/cell: rat brain tissue; 4% Paraformaldehyde-fixed and paraffin-embedded;
Antigen retrieval: citrate buffer ( 0.01M, pH 6.0 ), Boiling bathing for 15min; Block endogenous peroxidase by 3% Hydrogen peroxide for 30min; Blocking buffer (normal goat serum,SLC0005) at 37℃ for 20 min;
Incubation: Anti-VDAC Polyclonal Antibody, Unconjugated(SL1461R) 1:200, overnight at 4°C, followed by conjugation to the secondary antibody(SP-0023) and DAB(SLC0010) staining
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