Entrez gene ID | | 2643 |
Official gene symbol | | GCH1 |
Full name | | GTP cyclohydrolase 1 |
Aliases | | ,DYT14,DYT5,DYT5a,GCH,GTP-CH-1,GTPCH1,HPABH4B, |
Gene summary | | This gene encodes a member of the GTP cyclohydrolase family. The encoded protein is the first and rate-limiting enzyme in tetrahydrobiopterin (BH4) biosynthesis, catalyzing the conversion of GTP into 7,8-dihydroneopterin triphosphate. BH4 is an essential cofactor required by aromatic amino acid hydroxylases as well as nitric oxide synthases. Mutations in this gene are associated with malignant hyperphenylalaninemia and dopa-responsive dystonia. Several alternatively spliced transcript variants encoding different isoforms have been described; however, not all variants give rise to a functional enzyme. [provided by RefSeq] |
Location | | Chromosome: 14 Locus: 14q22.1-q22.2 |
Gene position | | 55369542 - 55308723 Map Viewer |
Gene orientation | | minus |
Gene size | | 60820 bp |
Gene sequence |
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OMIM ID | | 600225 |
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