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Protein

GTP cyclohydrolase 1

Gene

gch1

Organism
Oncorhynchus mykiss (Rainbow trout) (Salmo gairdneri)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

May positively regulate nitric oxide synthesis in endothelial cells. May be involved in dopamine synthesis. May modify pain sensitivity and persistence (By similarity).By similarity

Catalytic activityi

GTP + H2O = formate + 2-amino-4-hydroxy-6-(erythro-1,2,3-trihydroxypropyl)-dihydropteridine triphosphate.

Enzyme regulationi

GTP shows a positive allosteric effect, and tetrahydrobiopterin inhibits the enzyme activity. Zinc is required for catalytic activity. Inhibited by Mg2+ (By similarity).By similarity

Pathwayi

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi149 – 1491ZincBy similarity
Metal bindingi152 – 1521ZincBy similarity
Metal bindingi220 – 2201ZincBy similarity

GO - Molecular functioni

  1. GTP binding Source: UniProtKB-KW
  2. GTP cyclohydrolase I activity Source: UniProtKB-EC
  3. metal ion binding Source: UniProtKB-KW

GO - Biological processi

  1. 7,8-dihydroneopterin 3'-triphosphate biosynthetic process Source: UniProtKB-UniPathway
  2. tetrahydrobiopterin biosynthetic process Source: UniProtKB-KW
  3. tetrahydrofolate biosynthetic process Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Hydrolase

Keywords - Biological processi

Tetrahydrobiopterin biosynthesis

Keywords - Ligandi

GTP-binding, Metal-binding, Nucleotide-binding, Zinc

Enzyme and pathway databases

UniPathwayiUPA00848; UER00151.

Names & Taxonomyi

Protein namesi
Recommended name:
GTP cyclohydrolase 1 (EC:3.5.4.16)
Alternative name(s):
GTP cyclohydrolase I
Short name:
GTP-CH-I
Gene namesi
Name:gch1
OrganismiOncorhynchus mykiss (Rainbow trout) (Salmo gairdneri)
Taxonomic identifieri8022 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiActinopterygiiNeopterygiiTeleosteiProtacanthopterygiiSalmoniformesSalmonidaeSalmoninaeOncorhynchus

Subcellular locationi

Cytoplasm By similarity. Nucleus By similarity

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
  2. nucleus Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini‹1 – ›225›225GTP cyclohydrolase 1PRO_0000119479Add
BLAST

Interactioni

Subunit structurei

Toroid-shaped homodecamer, composed of two pentamers of five dimers.By similarity

Structurei

3D structure databases

ProteinModelPortaliP51596.
SMRiP51596. Positions 65-225.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the GTP cyclohydrolase I family.Curated

Phylogenomic databases

HOVERGENiHBG003136.

Family and domain databases

InterProiIPR001474. GTP_CycHdrlase_I.
IPR018234. GTP_CycHdrlase_I_CS.
IPR020602. GTP_CycHdrlase_I_dom.
[Graphical view]
PANTHERiPTHR11109. PTHR11109. 1 hit.
PfamiPF01227. GTP_cyclohydroI. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00063. folE. 1 hit.
PROSITEiPS00859. GTP_CYCLOHYDROL_1_1. 1 hit.
PS00860. GTP_CYCLOHYDROL_1_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Fragment.

P51596-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MERSKQSHDN QADSRPTTNE SSLNGHFDGL VKKTPGMWDV KGRGTAGESS
60 70 80 90 100
SHTGSSVVEN WKHERTRSIE DNEMSLPSLA AAYTTIIRGL GKDPQRQGLL
110 120 130 140 150
KTPWRAATAM QFFTKGYQEK IIDVLNDAIL DEDHDEMVIV KDIDMFSMCE
160 170 180 190 200
HHLVPIFGRV HIGYLPNKRV LGLSKLARIV EIYSRRLQVQ ERLTKQIAVA
210 220
ITEALQPAGV GVVIEATHMC MVMRG
Length:225
Mass (Da):25,168
Last modified:October 1, 1996 - v1
Checksum:i57DA39D5664887D8
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Non-terminal residuei1 – 11
Non-terminal residuei225 – 2251

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z49707 mRNA. Translation: CAA89809.1.
UniGeneiOmy.11719.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z49707 mRNA. Translation: CAA89809.1.
UniGeneiOmy.11719.

3D structure databases

ProteinModelPortaliP51596.
SMRiP51596. Positions 65-225.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

HOVERGENiHBG003136.

Enzyme and pathway databases

UniPathwayiUPA00848; UER00151.

Family and domain databases

InterProiIPR001474. GTP_CycHdrlase_I.
IPR018234. GTP_CycHdrlase_I_CS.
IPR020602. GTP_CycHdrlase_I_dom.
[Graphical view]
PANTHERiPTHR11109. PTHR11109. 1 hit.
PfamiPF01227. GTP_cyclohydroI. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00063. folE. 1 hit.
PROSITEiPS00859. GTP_CYCLOHYDROL_1_1. 1 hit.
PS00860. GTP_CYCLOHYDROL_1_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Homology cloning of GTP-cyclohydrolase I from various unrelated eukaryotes by reverse-transcription polymerase chain reaction using a general set of degenerate primers."
    Maier J., Witter K., Guetlich M., Ziegler I., Werner T., Ninnemann H.
    Biochem. Biophys. Res. Commun. 212:705-711(1994) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].

Entry informationi

Entry nameiGCH1_ONCMY
AccessioniPrimary (citable) accession number: P51596
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1996
Last sequence update: October 1, 1996
Last modified: January 7, 2015
This is version 73 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Allosteric enzyme

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.