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Rabbit Anti-TMEM49/FITC Conjugated antibody
background:
Vacuole membrane protein 1 (VMP1)/TMEM49 is a transmembrane protein localized to intracellular vacuoles and was discovered as a protein that promotes vacuole formation in acinar cells associated with acute pancreatitis (1). Over-expression of VMP1 promotes vacuole formation and subsequent cell death (1). Subsequent studies have shown that VMP1 expression is induced by starvation and the mTOR inhibitor, rapamycin, and can trigger autophagy (2). VMP1 is targeted, along with LC3, to autophagosome membranes (2). Knockdown of VMP1 can inhibit autophagosome formation (2). VMP1 interacts with Beclin-1, a key autophagy protein that activates the Class III PI3 kinase Vps34, which is regulated by a large network of associated proteins (3). VMP1 functions in the degradation and clearance of zymogen-containing vacuoles during experimental pancreatitis (4). During this process, VMP1 interacts with the ubiquitin protease USP9X, suggesting a possible functional link between the molecular machinery of autophagy and the ubiquitin pathway. Orthologues of VMP1 have been reported in C. elegans (known as EPG-3), Drosophila (known as TANGO-5), and Dictyostelium, and have been shown to play a role in membrane trafficking, orgenelle organization, and autophagy (5-7).
Function:
Stress-induced protein that, when overexpressed, promotes formation of intracellular vacuoles followed by cell death. May be involved in the cytoplasmic vacuolization of acinar cells during the early stage of acute pancreatitis. Plays a role in the initial stages of the autophagic process through its interaction with BECN1 (By similarity). Involved in cell-cell adhesion. Plays an essential role in formation of cell junctions.Sequence similarities: Belongs to the VMP1 family.
Subunit:
Belongs to the VMP1 family.
Subcellular Location:
Endoplasmic reticulum-Golgi intermediate compartment membrane. Cell membrane. Vacuole membrane. Endoplasmic reticulum.
Similarity:
Belongs to the VMP1 family.
Database links:
Entrez Gene: 81671 Human
Entrez Gene: 75909 Mouse
Entrez Gene: 192129 Rat
Omim: 611753 Human
SwissProt: Q96GC9 Human
SwissProt: Q99KU0 Mouse
SwissProt: Q91ZQ0 Rat
Unigene: 444569 Human
Unigene: 708260 Human
Unigene: 390398 Mouse
Unigene: 109048 Rat
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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