Page last updated: 2024-08-07 15:31:06

Purine nucleoside phosphorylase

A purine nucleoside phosphorylase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P00491]

Synonyms

PNP;
EC 2.4.2.1;
Inosine phosphorylase;
Inosine-guanosine phosphorylase

Research

Bioassay Publications (26)

TimeframeStudies on this Protein(%)All Drugs %
pre-19904 (15.38)18.7374
1990's7 (26.92)18.2507
2000's10 (38.46)29.6817
2010's5 (19.23)24.3611
2020's0 (0.00)2.80

Compounds (23)

Drugs with Inhibition Measurements

DrugTaxonomyMeasurementAverage (mM)Bioassay(s)Publication(s)
3-deazaguanineHomo sapiens (human)IC5077.000012
adenosineHomo sapiens (human)Ki2,000.000011
3-deazaguanosineHomo sapiens (human)IC50300.000012
ag 99Homo sapiens (human)IC5022.000012
galidesivirHomo sapiens (human)Ki0.033011
acyclovirHomo sapiens (human)Ki135.500022
guanosine monophosphateHomo sapiens (human)Ki1,500.000011
guanineHomo sapiens (human)IC505.000012
guanineHomo sapiens (human)Ki5.000011
8-amino-9-(2-thienylmethyl)guanineHomo sapiens (human)Ki0.067022
allopurinol ribosideHomo sapiens (human)Ki1,900.000022
8-amino-9-benzylguanineHomo sapiens (human)Ki0.200022
forodesineHomo sapiens (human)IC500.051822
forodesineHomo sapiens (human)Ki0.00831111
peldesineHomo sapiens (human)IC500.200011
peldesineHomo sapiens (human)Ki0.013511
ci 972Homo sapiens (human)IC500.900011
ci 972Homo sapiens (human)Ki0.830011
8-aminoguanineHomo sapiens (human)IC500.916723
8-aminoguanineHomo sapiens (human)Ki0.800011
acyclovir monophosphateHomo sapiens (human)Ki0.008066
immucillin gHomo sapiens (human)Ki0.004966
ulodesineHomo sapiens (human)Ki0.00051214
9-deaza-9-(3-thienylmethyl)guanineHomo sapiens (human)Ki0.060011
8-aminoguanosineHomo sapiens (human)IC501.382534
8-aminoguanosineHomo sapiens (human)Ki118.166766

Drugs with Activation Measurements

DrugTaxonomyMeasurementAverage (mM)Bioassay(s)Publication(s)
forodesineHomo sapiens (human)Kd0.000111

Drugs with Other Measurements

DrugTaxonomyMeasurementAverage (mM)Bioassay(s)Publication(s)
guanosineHomo sapiens (human)Km83.000011
inosineHomo sapiens (human)Km395.000022
8-bromoguanosineHomo sapiens (human)Km9,400.000011
8-aminoguanosineHomo sapiens (human)Km31,000.000011

Enables

This protein enables 7 target(s):

TargetCategoryDefinition
nucleoside bindingmolecular functionBinding to a nucleoside, a compound consisting of a purine or pyrimidine nitrogenous base linked either to ribose or deoxyribose. [GOC:hjd]
purine nucleobase bindingmolecular functionBinding to a purine nucleobase, an organic nitrogenous base with a purine skeleton. [GOC:hjd]
purine-nucleoside phosphorylase activitymolecular functionCatalysis of the reaction: purine nucleoside + phosphate = purine + alpha-D-ribose 1-phosphate. [EC:2.4.2.1]
protein bindingmolecular functionBinding to a protein. [GOC:go_curators]
phosphate ion bindingmolecular functionBinding to a phosphate ion. [GOC:jl]
identical protein bindingmolecular functionBinding to an identical protein or proteins. [GOC:jl]
guanosine phosphorylase activitymolecular functionCatalysis of the reaction: guanosine + phosphate = guanine + D-ribose 1-phosphate. [EC:2.4.2.15]

Located In

This protein is located in 6 target(s):

TargetCategoryDefinition
extracellular regioncellular componentThe space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite. [GOC:go_curators]
cytoplasmcellular componentThe contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. [ISBN:0198547684]
cytosolcellular componentThe part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. [GOC:hjd, GOC:jl]
secretory granule lumencellular componentThe volume enclosed by the membrane of a secretory granule. [GOC:rph]
extracellular exosomecellular componentA vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm. [GOC:BHF, GOC:mah, GOC:vesicles, PMID:15908444, PMID:17641064, PMID:19442504, PMID:19498381, PMID:22418571, PMID:24009894]
ficolin-1-rich granule lumencellular componentAny membrane-enclosed lumen that is part of a ficolin-1-rich granule. [GO_REF:0000064, GOC:TermGenie, PMID:23650620]

Active In

This protein is active in 1 target(s):

TargetCategoryDefinition
cytoplasmcellular componentThe contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. [ISBN:0198547684]

Involved In

This protein is involved in 14 target(s):

TargetCategoryDefinition
allantoin metabolic processbiological processThe chemical reactions and pathways involving allantoin, (2,5-dioxo-4-imidazolidinyl)urea, an intermediate or end product of purine catabolism. [GOC:mah, ISBN:0198547684]
nucleobase-containing compound metabolic processbiological processAny cellular metabolic process involving nucleobases, nucleosides, nucleotides and nucleic acids. [GOC:ai]
inosine catabolic processbiological processThe chemical reactions and pathways resulting in the breakdown of inosine, hypoxanthine riboside, a nucleoside found free but not in combination in nucleic acids except in the anticodons of some tRNAs. [GOC:go_curators]
deoxyinosine catabolic processbiological processThe chemical reactions and pathways resulting in the breakdown of deoxyinosine, hypoxanthine deoxyriboside. [GOC:go_curators]
deoxyadenosine catabolic processbiological processThe chemical reactions and pathways resulting in the breakdown of deoxyadenosine, 2-deoxyribosyladenine, one of the four major nucleosides of DNA. [GOC:go_curators]
purine ribonucleoside salvagebiological processAny process which produces a purine nucleoside from derivatives of it, without de novo synthesis. [GOC:jl]
IMP catabolic processbiological processThe chemical reactions and pathways resulting in the breakdown of IMP, inosine monophosphate. [ISBN:0198506732]
nicotinamide riboside catabolic processbiological processThe chemical reactions and pathways resulting in the breakdown of nicotinamide riboside, the product of the formation of a glycosidic bond between ribose and nicotinamide. [ISBN:0198506732]
immune responsebiological processAny immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat. [GO_REF:0000022, GOC:add]
nucleotide biosynthetic processbiological processThe chemical reactions and pathways resulting in the formation of nucleotides, any nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the glycose moiety; may be mono-, di- or triphosphate; this definition includes cyclic-nucleotides (nucleoside cyclic phosphates). [GOC:go_curators]
response to xenobiotic stimulusbiological processAny process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus from a xenobiotic, a compound foreign to the organim exposed to it. It may be synthesized by another organism (like ampicilin) or it can be a synthetic chemical. [GOC:jl, GOC:krc]
positive regulation of interleukin-2 productionbiological processAny process that activates or increases the frequency, rate, or extent of interleukin-2 production. [GOC:mah]
purine-containing compound salvagebiological processAny process that generates a purine-containing compound, any nucleobase, nucleoside, nucleotide or nucleic acid that contains a purine base, from derivatives of them without de novo synthesis. [GOC:jl]
dAMP catabolic processbiological processThe chemical reactions and pathways resulting in the breakdown of dAMP, deoxyadenosine monophosphate (2'-deoxyadenosine 5'-phosphate). [GOC:go_curators]