Folate receptor beta is a protein that in humans is encoded by the FOLR2gene.[1][2][3]
The protein encoded by this gene is a member of the folate receptor (FOLR) family. Members of this gene family have a high affinity for folic acid and for several reduced folic acid derivatives, and mediate delivery of 5-methyltetrahydrofolate to the interior of cells. This protein has a 68% and 79% sequence homology with the FOLR1 and FOLR3 proteins, respectively. The FOLR2 protein was originally thought to exist only in placenta, but is also detected in spleen, bone marrow, and thymus.[3]
↑van Heyningen V, Little PF (May 1995). "Report of the fourth international workshop on human chromosome 11 mapping 1994". Cytogenet Cell Genet. 69 (3–4): 127–58. doi:10.1159/000133953. PMID7698003.
Ragoussis J, Senger G, Trowsdale J, Campbell IG (1992). "Genomic organization of the human folate receptor genes on chromosome 11q13". Genomics. 14 (2): 423–30. doi:10.1016/S0888-7543(05)80236-8. PMID1330883.
Freisheim JH, Price EM, Ratnam M (1990). "Folate coenzyme and antifolate transport proteins in normal and neoplastic cells". Adv. Enzyme Regul. 29: 13–26. doi:10.1016/0065-2571(89)90091-5. PMID2561247.
Ratnam M, Marquardt H, Duhring JL, Freisheim JH (1990). "Homologous membrane folate binding proteins in human placenta: cloning and sequence of a cDNA". Biochemistry. 28 (20): 8249–54. doi:10.1021/bi00446a042. PMID2605182.
Yan W, Ratnam M (1995). "Preferred sites of glycosylphosphatidylinositol modification in folate receptors and constraints in the primary structure of the hydrophobic portion of the signal". Biochemistry. 34 (44): 14594–600. doi:10.1021/bi00044a039. PMID7578066.
Sadasivan E, Cedeno MM, Rothenberg SP (1994). "Characterization of the gene encoding a folate-binding protein expressed in human placenta. Identification of promoter activity in a G-rich SP1 site linked with the tandemly repeated GGAAG motif for the ets encoded GA-binding protein". J. Biol. Chem. 269 (7): 4725–35. PMID8106441.
Shen F, Ross JF, Wang X, Ratnam M (1994). "Identification of a novel folate receptor, a truncated receptor, and receptor type beta in hematopoietic cells: cDNA cloning, expression, immunoreactivity, and tissue specificity". Biochemistry. 33 (5): 1209–15. doi:10.1021/bi00171a021. PMID8110752.
Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID8125298.
Page ST, Owen WC, Price K, Elwood PC (1993). "Expression of the human placental folate receptor transcript is regulated in human tissues. Organization and full nucleotide sequence of the gene". J. Mol. Biol. 229 (4): 1175–83. doi:10.1006/jmbi.1993.1116. PMID8445646.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
Wang J, Shen F, Yan W, et al. (1998). "Proteolysis of the carboxyl-terminal GPI signal independent of GPI modification as a mechanism for selective protein secretion". Biochemistry. 36 (47): 14583–92. doi:10.1021/bi970845w. PMID9398177.
Nakashima-Matsushita N, Homma T, Yu S, et al. (1999). "Selective expression of folate receptor beta and its possible role in methotrexate transport in synovial macrophages from patients with rheumatoid arthritis". Arthritis Rheum. 42 (8): 1609–16. doi:10.1002/1529-0131(199908)42:8<1609::AID-ANR7>3.0.CO;2-L. PMID10446858.
Hao H, Qi H, Ratnam M (2003). "Modulation of the folate receptor type beta gene by coordinate actions of retinoic acid receptors at activator Sp1/ets and repressor AP-1 sites". Blood. 101 (11): 4551–60. doi:10.1182/blood-2002-10-3174. PMID12543860.
