For Research Use Only. Not for use in diagnostic procedures.

Chromosome: 5; NC_000005.9 (133936839..133968533, complement). Location: 5q31.1

Rabbit

Phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol

1 mg/ml (lot specific)

Small volumes of anti-SAR1B antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

ELISA (EIA), Immunohistochemistry (IHC), Western Blot (WB)

22,410 Da

SAR1 homolog B (S. cerevisiae)

GTP-binding protein SAR1b; 2310075M17Rik; SAR1a gene homolog 2; GTP-binding protein B; GTP-binding protein Sara

GTP-binding protein SAR1b

SARA2; SARB; GTBPB??[Similar Products]

SAR1B_HUMAN

The protein encoded by this gene is a small GTPase that acts as a homodimer. The encoded protein is activated by the guanine nucleotide exchange factor PREB and is involved in protein transport from the endoplasmic reticulum to the Golgi. This protein is part of the COPII coat complex. Defects in this gene are a cause of chylomicron retention disease (CMRD), also known as Anderson disease (ANDD). Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Mar 2010]

SAR1B: Involved in transport from the endoplasmic reticulum to the Golgi apparatus. Activated by the guanine nucleotide exchange factor PREB. Involved in the selection of the protein cargo and the assembly of the COPII coat complex. Defects in SAR1B are the cause of chylomicron retention disease (CMRD); also known as Anderson disease (ANDD). CMRD is an autosomal recessive disorder of severe fat malabsorption associated with failure to thrive in infancy. The condition is characterized by deficiency of fat-soluble vitamins, low blood cholesterol levels, and a selective absence of chylomicrons from blood. Affected individuals accumulate chylomicron-like particles in membrane-bound compartments of enterocytes, which contain large cytosolic lipid droplets. Belongs to the small GTPase superfamily. SAR1 family.

Protein type: G protein, monomeric; G protein; G protein, monomeric, SAR1; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 5q31.1

Cellular Component: endoplasmic reticulum membrane; cytosol

Molecular Function: GTPase activity; GTP binding; metal ion binding

Biological Process: COPII coating of Golgi vesicle; intracellular protein transport; ER to Golgi vesicle-mediated transport; antigen processing and presentation of peptide antigen via MHC class I; cellular protein metabolic process; antigen processing and presentation of exogenous peptide antigen via MHC class II; protein amino acid N-linked glycosylation via asparagine; post-translational protein modification

Disease: Chylomicron Retention Disease

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