TMEM41B Antibody (#68071) Datasheet with Images Cell Signaling Technology

For Research Use Only. Not for Use in Diagnostic Procedures.

Applications:

WB, IP

REACTIVITY:

SENSITIVITY:

Endogenous

MW (kDa):

SOURCE:

Rabbit

UniProt ID:

#Q5BJD5

Entrez-Gene Id:

440026

Product Information

Product Usage Information

Application	Dilution
Western Blotting	1:1000
Immunoprecipitation	1:100

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

TMEM41B Antibody recognizes endogenous levels of total TMEM41B protein.

Species Reactivity:

Human

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues near the amino terminus of human TMEM41B protein. Antibodies are purified by protein A and peptide affinity chromatography.

Background

TMEM41B (also known as Stasimon) was discovered as a target of splicing dysfunction induced by loss of spinal motor neuron (SMN) protein, a feature of spinal muscular atrophy (SMA), resulting in motor circuit defects (1). Loss of TMEM41B in mice results in embryonic lethality (2). TMEM41B is a transmembrane protein that resides at the endoplasmic reticulum (ER) and is found at contact sites between the ER and mitochondria (2). Independent CRISPR screens identified TMEM41B as a novel regulator of autophagy, being structurally and functionally related to VMP1 (3-5). Loss of TMEM41B inhibited autophagosome formation and autophagic flux (3-5). Furthermore, depletion of TMEM41B led to an accumulation of lipid droplets, indicating a role in lipid mobilization and utilization of fatty acids (3,4). TMEM41B also appeared in screens, identifying it as an essential host protein for infection of flaviviruses and coronaviruses, including SARS-CoV-2 (6,7).

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v nonfat dry milk, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting IP: Immunoprecipitation

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

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