Transmembrane protein 49 (TMEM49), also known as vacuole membrane protein 1 (VMP1), is an endoplasmic reticulum (ER)-localized protein that plays an important role in autophagy and, specifically, autophagosome formation (1). TMEM49/VMP1 is synthesized as 406 amino acid (aa) transmembrane protein containing a VTT (VMP1-TMEM41b-TVP38) domain and with a theoretical molecular weight of 46 kDa (1,2). TMEM49 helps regulate ER contacts with membranes such as isolation membranes, mitochondria, endosomes, and lipid droplets (1). TMEM49/VMP1 deficiency leads to tighter ER contacts and, in the context of autophagy, results in failure of the autophagosome and lysosome to fuse and eventual disruption of autophagic flux (1).

TMEM49/VMP1 was first implicated in pancreatitis and its overexpression, together with KRAS oncogene activation, leads to development of pancreatic ductal adenocarcinoma (PDAC) (3). Aside from pancreatitis, TMEM49/VMP1 is also associated with a number of other pathologies including cancer, inflammatory bowel disease, and, potentially, neurodegenerative disorders such as Parkinson's Disease (PD) and Alzheimer's Disease (AD) (1). It is suggested that TMEM49/VMP1 deficiency in neurons results in disrupted autophagy and protein aggregation, increased ER-membrane contacts, and dysfunctional mitochondrial homeostasis, all of which contribute to neurodegeneration (1).

References

1. Wang, P., Kou, D., & Le, W. (2020). Roles of VMP1 in Autophagy and ER-Membrane Contact: Potential Implications in Neurodegenerative Disorders. Frontiers in molecular neuroscience, 13, 42. https://doi.org/10.3389/fnmol.2020.00042

2. Uniprot (Q96GC9)

3. Iovanna J. L. (2016). Autophagy Induced during Pancreatitis Promotes KRAS-Dependent Transformation in the Pancreas. Frontiers in oncology, 6, 226. https://doi.org/10.3389/fonc.2016.00226

Alternate Names

DKFZp566I133, EPG3, TDC1, transmembrane protein 49TMEM49, vacuole membrane protein 1

Gene Symbol

VMP1

Additional TMEM49 Products

Product Documents for TMEM49 Antibody [HRP]

Product Datasheets

Download Product Datasheets

COA

SDS

Download SDS

Product Specific Notices for TMEM49 Antibody [HRP]

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Citations
Reviews

TMEM49 Antibody [HRP]

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-78784H

Key Product Details

Species Reactivity

Validated:

Applications

Label

Antibody Source

Concentration

View all TMEM49 Antibodies »

Product Summary for TMEM49 Antibody [HRP]

Immunogen

Clonality

Host

Isotype

Applications for TMEM49 Antibody [HRP]

Immunocytochemistry/ Immunofluorescence

Immunohistochemistry

Immunohistochemistry-Paraffin

Western Blot

Formulation, Preparation, and Storage

Purification

Formulation

Preservative

Concentration

Shipping

Stability & Storage

Background: TMEM49

Alternate Names

Gene Symbol

Additional TMEM49 Products

Product Documents for TMEM49 Antibody [HRP]

Product Datasheets

COA

Certificate of Analysis

SDS

Product Specific Notices for TMEM49 Antibody [HRP]

CONTACT INFORMATION

Stay Connected