Anti-RFC/SLC19A1 Antibody Picoband® Fluoro647 Conjugated

Solute carrier family 19 (folate transporter), member 1, also known as SLC19A1 or RFC1, is a protein which in humans is encoded by the SLC19A1 gene. Transport of folate compounds into mammalian cells can occur via receptor-mediated or carrier-mediated mechanisms. A functional coordination between these 2 mechanisms has been proposed to be the method of folate uptake in certain cell types. Methotrexate (MTX) is an antifolate chemotherapeutic agent that is actively transported by the carrier-mediated uptake system. And RFC1 plays a role in maintaining intracellular concentrations of folate.

Isoform 1 is expressed in brain, pancreas, stomach, the colon cancer cell line LoVo and the T-lymphoblastoma Jurkat, but not in heart, placenta, liver, lung, skeletal muscle, kidney or the stomach cancer cell line AGS. Expressed at high levels in the small cell lung cancer cell line NCI-H510, at lower levels in NCI-H345, NCI-H69 and GLC-28 cell lines, not expressed in GLC-19 cell line. Within the stomach, expressed at high levels in the mucosa of the gastric fundus and at low levels in the antrum and duodenum. Isoform 2 is present in pancreatic cancer cells and colorectal cancer cells, but not in normal pancreas or colonic mucosa. Isoform 3 is expressed in brain, pancreas, stomach, the stomach cancer cell line AGS and the colon cancer cell line LoVo.

Receptor for gastrin and cholecystokinin. The CKK-B receptors occur throughout the central nervous system where they modulate anxiety, analgesia, arousal, and neuroleptic activity. This receptor mediates its action by association with G proteins that activate a phosphatidylinositol-calcium second messenger system.

1. Entrez Gene: SLC19A1 solute carrier family 19 (folate transporter), member 1. 2. Lapenta V, Sossi V, Gosset P, Vayssettes C, Vitali T, Rabatel N, Tassone F, Blouin JL, Scott HS, Antonarakis SE, Créau N, Brahe C (April 1998) . Construction of a 2.5-Mb integrated physical and gene map of distal 21q22.3. Genomics 49 (1) : 1–13. 3. Stanisławska-Sachadyn A, Mitchell LE, Woodside JV, Buckley PT, Kealey C, Young IS, Scott JM, Murray L, Boreham CA, McNulty H, Strain JJ, Whitehead AS (September 2009) . The reduced folate carrier (SLC19A1) c.80G>A polymorphism is associated with red cell folate concentrations among women. Ann. Hum. Genet. 73 (Pt 5) : 484–491.