Vesicular monoamine transporter 1 (VMAT1) also known as chromaffin granule amine transporter (CGAT) or solute carrier family 18 member 1 (SLC18A1) is a protein that in humans is encoded by the SLC18A1 gene. VMAT1 is an integral membrane protein, which is embedded in synaptic vesicles and serves to transfer monoamines, such as norepinephrine, epinephrine, dopamine, and serotonin, between the cytosol and synaptic vesicles. SLC18A1 is an isoform of the vesicular monoamine transporter.
Background References
1. Anlauf M, Eissele R, Sch fer MK, Eiden LE, Arnold R, Pauser U, Kl ppel G, Weihe E (August 2003). "Expression of the two isoforms of the vesicular monoamine transporter (VMAT1 and VMAT2) in the endocrine pancreas and pancreatic endocrine tumors". J. Histochem. Cytochem. 51 (8): 1027–40.
2. Lohoff F, Dahl J, Ferraro T, Arnold S, Gallinat J, Sander T, Berrettini W (December 2006). "Variations in the vesicular monoamine transporter type 1 gene (VMAT1/SLC18A1) are associated with bipolar I disorder". Neuropsychopharmacology 31 (12): 2739–2747.
Sequence Similarity
Belongs to the major facilitator superfamily. Vesicular transporter family.
Tissue Specificity
Highly expressed in chromaffin cells of the adrenal medulla (at protein level). Detected in peripheral sympathetic ganglia (at protein level). Found in some paracrine cells in stomach and duodenum (at protein level).
Western blot analysis of VMAT1 on different lysates with Rabbit anti-VMAT1 antibody (R1307-7) at 1/2,000 dilution.
Lane 1: SH-SY5Y cell lysate Lane 2: PC-12 cell lysate Lane 3: Neuro-2a cell lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 56 kDa Observed band size: 56 kDa
Exposure time: 51 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (R1307-7) at 1/2,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"