Binds to folate and reduced folic acid derivatives and mediates delivery of 5-methyltetrahydrofolate to the interior of cells. Isoform Short does not bind folate. Spleen, thymus, bone marrow, ovarian carcinoma, and uterine carcinoma. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. Variant in position: 150:MSAHPTWGPGSGRSTRAGAKSAF->ECSPNLGPWIRQVNQSWRKERILNVPLCKEDCERW WEDCRTSYTCKSNWHKGWNWTSGINECPAGALCSTFESYFPTPAALCEGLWSHSFKVSNYSRG. Belongs to the folate receptor family. It is uncertain whether Met-1 or Met-3 is the initiator. Truncated N-terminus. Truncated N-terminus. Truncated N-terminus. Truncated N-terminus.