GTP cyclohydrolase 1 feedback regulatory protein is an enzyme that in humans is encoded by the GCHFRgene.[5][6][7]
GTP cyclohydrolase I feedback regulatory protein binds to and mediates tetrahydrobiopterin inhibition of GTP cyclohydrolase I. The regulatory protein, GCHFR, consists of a homodimer. It is postulated that GCHFR may play a role in regulating phenylalanine metabolism in the liver and in the production of biogenic amine neurotransmitters and nitric oxide.[7]
^Hochstrasser DF, Frutiger S, Paquet N, Bairoch A, Ravier F, Pasquali C, Sanchez JC, Tissot JD, Bjellqvist B, Vargas R, et al. (Mar 1993). "Human liver protein map: a reference database established by microsequencing and gel comparison". Electrophoresis. 13 (12): 992–1001. doi:10.1002/elps.11501301201. PMID1286669. S2CID23518983.
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.
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.
Bader G, Schiffmann S, Herrmann A, et al. (2001). "Crystal structure of rat GTP cyclohydrolase I feedback regulatory protein, GFRP". J. Mol. Biol. 312 (5): 1051–7. doi:10.1006/jmbi.2001.5011. PMID11580249.
Gesierich A, Niroomand F, Tiefenbacher CP (2003). "Role of human GTP cyclohydrolase I and its regulatory protein in tetrahydrobiopterin metabolism". Basic Res. Cardiol. 98 (2): 69–75. doi:10.1007/s00395-003-0394-y. PMID12607127. S2CID19864675.
Kalivendi S, Hatakeyama K, Whitsett J, et al. (2006). "Changes in tetrahydrobiopterin levels in endothelial cells and adult cardiomyocytes induced by LPS and hydrogen peroxide--a role for GFRP?". Free Radic. Biol. Med. 38 (4): 481–91. doi:10.1016/j.freeradbiomed.2004.11.004. PMID15649650.
Ohta E, Funayama M, Ichinose H, et al. (2006). "Novel mutations in the guanosine triphosphate cyclohydrolase 1 gene associated with DYT5 dystonia". Arch. Neurol. 63 (11): 1605–10. doi:10.1001/archneur.63.11.1605. PMID17101830.
Kontostavlaki DP, Panayotacopoulou MT, Sluijs JA, et al. (2007). "Co-expression of tyrosine hydroxylase and GTP cyclohydrolase I in arginine vasopressin-synthesizing neurons of the human supraoptic nucleus demonstrated by laser microdissection and real-time PCR". Neuroendocrinology. 84 (6): 386–95. doi:10.1159/000097487. PMID17135716. S2CID40550512.
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