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Schema
>
Reaction
>
Entries
Guanine + H2O => Xanthine + NH4+
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catalystActivity
[CatalystActivity:74254] guanine deaminase activity of GDA dimer [cytosol]
catalystActivityReference
[CatalystActivityReference:9643099] guanine deaminase activity of GDA dimer [cytosol] Cloning and characterization of human guanine deaminase. Purification and partial amino acid sequence of the mouse protein.
category
transition
compartment
[Compartment:70101] cytosol
created
[InstanceEdit:74183] Jassal, B, 2003年07月17日 08:31:43
crossReference
[DatabaseIdentifier:12610724] Rhea:14666
dbId
74255
displayName
Guanine + H2O => Xanthine + NH4+
eventOf
[Pathway:R-HSA-74259] Purine catabolism - Homo sapiens
followingEvent
[Reaction:R-HSA-9727349] XDH dehydrogenates xanthine to form urate - Homo sapiens
[Reaction:R-HSA-74258] XDH oxidizes xanthine to form urate - Homo sapiens
input
[SimpleEntity:R-ALL-83956] Gua [cytosol]
[SimpleEntity:R-ALL-70106] H+ [cytosol]
[SimpleEntity:R-ALL-29356] H2O [cytosol]
isInDisease
false
isInferred
false
literatureReference
[LiteratureReference:200117] Cloning and characterization of human guanine deaminase. Purification and partial amino acid sequence of the mouse protein.
[LiteratureReference:500137] Alteration of enzyme specificity by computational loop remodeling and design
maxDepth
1
modified
[InstanceEdit:11033291] Weiser, Joel, 2025年08月28日
name
Guanine + H2O => Xanthine + NH4+
orthologousEvent
[Reaction:R-SCE-74255] Guanine + H2O => Xanthine + NH4+ - Saccharomyces cerevisiae
[Reaction:R-SPO-74255] Guanine + H2O => Xanthine + NH4+ - Schizosaccharomyces pombe
[Reaction:R-DDI-74255] Guanine + H2O => Xanthine + NH4+ - Dictyostelium discoideum
[Reaction:R-DME-74255] Guanine + H2O => Xanthine + NH4+ - Drosophila melanogaster
[Reaction:R-GGA-74255] Guanine + H2O => Xanthine + NH4+ - Gallus gallus
[Reaction:R-XTR-74255] Guanine + H2O => Xanthine + NH4+ - Xenopus tropicalis
[Reaction:R-DRE-74255] Guanine + H2O => Xanthine + NH4+ - Danio rerio
[Reaction:R-SSC-74255] Guanine + H2O => Xanthine + NH4+ - Sus scrofa
[Reaction:R-BTA-74255] Guanine + H2O => Xanthine + NH4+ - Bos taurus
[Reaction:R-CFA-74255] Guanine + H2O => Xanthine + NH4+ - Canis familiaris
[Reaction:R-RNO-74255] Guanine + H2O => Xanthine + NH4+ - Rattus norvegicus
[Reaction:R-MMU-74255] Guanine + H2O => Xanthine + NH4+ - Mus musculus
output
[SimpleEntity:R-ALL-31633] NH4+ [cytosol]
[SimpleEntity:R-ALL-30064] XAN [cytosol]
precedingEvent
[Reaction:R-HSA-74249] PNP catalyzes the conversion of (deoxy)guanosine to guanine and (deoxy)ribose - Homo sapiens
[Reaction:R-HSA-8953339] DNPH1 hydrolyses dGMP - Homo sapiens
[FailedReaction:R-HSA-9734274] Defective HPRT1 does not convert guanine or hypoxanthine to GMP or IMP - Homo sapiens
releaseDate
2004年07月06日
reviewStatus
[ReviewStatus:9821382] five stars
revised
[InstanceEdit:504064] D'Eustachio, P, 2010年02月05日
schemaClass
Reaction
species
[Species:48887] Homo sapiens
stId
R-HSA-74255
summation
[Summation:178834] Cytosolic guanine deaminase (GDA) catalyzes the reaction of ...
updateTrackers
[UpdateTracker:9791142] Update Tracker - [Reaction:74255] Guanine + H2O => Xanthine + NH4+ - v32:[addLiteratureReference, modifyText]
[UpdateTracker:9775912] Update Tracker - [Reaction:74255] Guanine + H2O => Xanthine + NH4+ - v78:[addInput]
[UpdateTracker:9792381] Update Tracker - [Reaction:74255] Guanine + H2O => Xanthine + NH4+ - v22:[addLiteratureReference]
[UpdateTracker:9781613] Update Tracker - [Reaction:74255] Guanine + H2O => Xanthine + NH4+ - v60:[add_removeOutput]
Referrals
(updatedInstance)
[UpdateTracker:9791142] Update Tracker - [Reaction:74255] Guanine + H2O => Xanthine + NH4+ - v32:[addLiteratureReference, modifyText]
[UpdateTracker:9775912] Update Tracker - [Reaction:74255] Guanine + H2O => Xanthine + NH4+ - v78:[addInput]
[UpdateTracker:9792381] Update Tracker - [Reaction:74255] Guanine + H2O => Xanthine + NH4+ - v22:[addLiteratureReference]
[UpdateTracker:9781613] Update Tracker - [Reaction:74255] Guanine + H2O => Xanthine + NH4+ - v60:[add_removeOutput]
(hasEvent)
[Pathway:R-HSA-74259] Purine catabolism
(precedingEvent)
[Reaction:R-HSA-9727349] XDH dehydrogenates xanthine to form urate
[Reaction:R-HSA-74258] XDH oxidizes xanthine to form urate
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