Gene Gene information from NCBI Gene database.
Entrez ID 2643
Gene name GTP cyclohydrolase 1
Gene symbol GCH1
Synonyms (NCBI Gene)
DYT14DYT5DYT5aGCHGTP-CH-1GTPCH1HPABH4B
Chromosome 14
Chromosome location 14q22.2
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
SNPs SNP information provided by dbSNP.
49
SNP ID Visualize variation Clinical significance Consequence
rs41298440 G>A Pathogenic Intron variant, coding sequence variant, stop gained
rs41298442 T>C,G Pathogenic, uncertain-significance, likely-pathogenic Intron variant, coding sequence variant, missense variant
rs56127440 G>A,C Likely-benign, conflicting-interpretations-of-pathogenicity, uncertain-significance, benign-likely-benign Genic upstream transcript variant, coding sequence variant, missense variant
rs104894433 G>A,C,T Pathogenic Missense variant, coding sequence variant, synonymous variant, genic upstream transcript variant
rs104894434 A>G Pathogenic Missense variant, intron variant, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
125
miRTarBase ID miRNA Experiments Reference
MIRT002772 hsa-miR-1-3p Microarray 15685193
MIRT018241 hsa-miR-335-5p Microarray 18185580
MIRT022842 hsa-miR-124-3p Microarray 18668037
MIRT002772 hsa-miR-1-3p Microarray;Other 15685193
MIRT024891 hsa-miR-215-5p Microarray 19074876
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
55
GO ID Ontology Definition Evidence Reference
GO:0000166 Function Nucleotide binding IEA
GO:0003824 Function Catalytic activity IEA
GO:0003924 Function GTPase activity IDA 2463916
GO:0003934 Function GTP cyclohydrolase I activity IBA
GO:0003934 Function GTP cyclohydrolase I activity IDA 8068008, 11284739
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
600225 4193 ENSG00000131979
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P30793
Protein name GTP cyclohydrolase 1 (EC 3.5.4.16) (GTP cyclohydrolase I) (GTP-CH-I)
Protein function Positively regulates nitric oxide synthesis in umbilical vein endothelial cells (HUVECs). May be involved in dopamine synthesis. May modify pain sensitivity and persistence. Isoform GCH-1 is the functional enzyme, the potential function of the e
PDB 1FB1 , 6Z80 , 6Z85 , 6Z86 , 6Z87 , 6Z88 , 6Z89 , 7ALA , 7ALB , 7ALC , 7ALQ
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF01227 GTP_cyclohydroI 71 249 GTP cyclohydrolase I Domain
Tissue specificity TISSUE SPECIFICITY: In epidermis, expressed predominantly in basal undifferentiated keratinocytes and in some but not all melanocytes (at protein level). {ECO:0000269|PubMed:16778797}.
Sequence
Sequence length 250
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Folate biosynthesis
Metabolic pathways
Biosynthesis of cofactors
  Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation
Associated diseases Disease associations from ClinVar categorized as Causal (Pathogenic/Likely Pathogenic) or Unknown.
926
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Abnormal central motor function Likely pathogenic rs2140127157 RCV001814484
Dystonia 5 Likely pathogenic; Pathogenic rs1594989087, rs2140041744, rs2140127425, rs2140041733, rs2140038749, rs2140073988, rs2140127278, rs2140074097, rs1296731359, rs1555362907, rs2140127551, rs2140038846, rs2140041673, rs1555358604, rs2140063480
View all (47 more)
RCV001369910
RCV001377213
RCV001382935
RCV002569017
RCV001814643
RCV001946738
RCV001954666
RCV001949259
RCV001981912
RCV001999954
RCV001866517
RCV002030627
RCV002250010
RCV002250011
RCV002250907
RCV002468715
RCV003062636
RCV003027954
RCV003059765
RCV003066285
RCV003059651
RCV003153160
RCV000009853
RCV000009854
RCV000009855
RCV000009856
RCV000009857
RCV000009859
RCV000009860
RCV000009861
RCV000009868
RCV001390287
RCV003764543
RCV001221402
RCV003783608
RCV003783610
RCV003783613
RCV003783614
RCV003804058
RCV003812778
RCV000811926
RCV003766922
RCV001390286
RCV000555633
RCV000540760
RCV000551452
RCV001388236
RCV001059581
RCV000634835
RCV000634832
RCV000634834
RCV000696865
RCV000699765
RCV000689484
RCV000694754
RCV000793127
RCV000793795
RCV000794013
RCV000806490
RCV000794859
RCV000802195
RCV000796195
RCV000794588
RCV001858704
RCV001004083
RCV001051943
RCV001824413
RCV001223493
RCV001206760
RCV001231564
RCV001290400
Dystonia, dopa-responsive, with or without hyperphenylalaninemia, autosomal recessive Pathogenic rs2140074192, rs137852633 RCV002508111
RCV002508116
Dystonic disorder Likely pathogenic; Pathogenic rs2140063480, rs1555360050, rs1566687487 RCV003483884
RCV003483695
RCV000678472
Unknown Diseases with uncertain, conflicting, or no pathogenic evidence in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
6-Pyruvoyl-tetrahydrobiopterin synthase deficiency Conflicting classifications of pathogenicity rs763294577 RCV000626091
Dopa-responsive dystonia Conflicting classifications of pathogenicity; Benign; Likely benign; Uncertain significance rs200891969, rs41298442, rs145762799, rs55885280, rs886050552, rs144676716, rs752359690, rs533240612, rs538405738 RCV000148506
RCV002255090
RCV000357388
RCV000365945
RCV000345565
RCV000306109
RCV000365863
RCV000314908
RCV000285962
Hyperphenylalaninemia due to tetrahydrobiopterin deficiency Conflicting classifications of pathogenicity rs56127440 RCV000148505
Intellectual disability Conflicting classifications of pathogenicity rs200891969, rs104894434, rs369661042 RCV005625324
RCV001260617
RCV005625672
Associations from Text MiningDisease associations identified through Pubtator
Disease Name Relationship Type References
Acute Lung Injury Stimulate 38071255
Acute Pain Associate 30031848
Alzheimer Disease Associate 29432188
Anemia Sickle Cell Associate 24136375, 30031848
Anxiety Associate 27871051
Anxiety Disorders Associate 26945673
Atherosclerosis Associate 21969008
Cardiovascular Diseases Associate 24136375, 31082861, 36012132
Cerebral Infarction Associate 21963893
Cerebral Palsy Associate 21935284