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STRINGSTRING
ITPA ITPA MOCS1 MOCS1 TH TH SPR SPR GCH1 GCH1 GCHFR GCHFR ALPP ALPP PTS PTS ALPI ALPI ALPPL2 ALPPL2 ALPL ALPL
"GCH1" - GTP cyclohydrolase 1 in Homo sapiens
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second shell of interactors
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some 3D structure is known or predicted
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Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
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textmining
co-expression
protein homology
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GCH1GTP cyclohydrolase 1; 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 enzymatically inactive isoforms remains unknown; Belongs to the GTP cyclohydrolase I family (250 aa)    
Predicted Functional Partners:
GCHFR
GTP cyclohydrolase 1 feedback regulatory protein; Mediates tetrahydrobiopterin inhibition of GTP cyclohydrolase 1. This inhibition is reversed by L-phenylalanine (84 aa)
      
  0.996
PTS
6-pyruvoyl tetrahydrobiopterin synthase; Involved in the biosynthesis of tetrahydrobiopterin, an essential cofactor of aromatic amino acid hydroxylases. Catalyzes the transformation of 7,8-dihydroneopterin triphosphate into 6- pyruvoyl tetrahydropterin; Belongs to the PTPS family (145 aa)
   
 
  0.986
MOCS1
Molybdenum cofactor biosynthesis protein 1; Isoform MOCS1A and isoform MOCS1B probably form a complex that catalyzes the conversion of 5’-GTP to cyclic pyranopterin monophosphate (cPMP). MOCS1A catalyzes the cyclization of GTP to (8S)-3’,8-cyclo-7,8-dihydroguanosine 5’- triphosphate and MOCS1B catalyzes the subsequent conversion of (8S)-3’,8-cyclo-7,8-dihydroguanosine 5’-triphosphate to cPMP; In the N-terminal section; belongs to the radical SAM superfamily. MoaA family (385 aa)
   
 
  0.954
SPR
Sepiapterin reductase; Catalyzes the final one or two reductions in tetra- hydrobiopterin biosynthesis to form 5,6,7,8-tetrahydrobiopterin; Belongs to the sepiapterin reductase family (261 aa)
     
 
  0.953
TH
Tyrosine 3-monooxygenase; Plays an important role in the physiology of adrenergic neurons; Belongs to the biopterin-dependent aromatic amino acid hydroxylase family (528 aa)
      
 
  0.926
ALPP
Alkaline phosphatase, placental (535 aa)
          
  0.910
ALPL
Alkaline phosphatase, tissue-nonspecific isozyme; This isozyme may play a role in skeletal mineralization; Belongs to the alkaline phosphatase family (524 aa)
          
  0.910
ALPI
Alkaline phosphatase, intestinal (528 aa)
          
  0.910
ALPPL2
Alkaline phosphatase, placental like 2 (532 aa)
          
  0.910
ITPA
Inosine triphosphate pyrophosphatase; Pyrophosphatase that hydrolyzes the non-canonical purine nucleotides inosine triphosphate (ITP), deoxyinosine triphosphate (dITP) as well as 2’-deoxy-N-6-hydroxylaminopurine triposphate (dHAPTP) and xanthosine 5’-triphosphate (XTP) to their respective monophosphate derivatives. The enzyme does not distinguish between the deoxy- and ribose forms. Probably excludes non-canonical purines from RNA and DNA precursor pools, thus preventing their incorporation into RNA and DNA and avoiding chromosomal lesions (194 aa)
   
 
  0.882
Your Current Organism:
Homo sapiens
NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo sapiens, human, man
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