Metabolite Card

Formula: C5H4N4 (120.0436)
SMILES: N1C=NC2=C1C=NC=N2

Synonyms [en]

purine; 7H-Purine; Purine base; purine-ring; 9H-Purine; beta-Purine

Reviewed

Last reviewed on 2024-06-28.

Cite this Page

Purine. 数据之源,洞见之始. SMRUCC genomics institute, a synthetic life researcher from China. https://biocad_registry.innovation.ac.cn/s/(-)-arctiin (retrieved 2026-01-03) (CAD Registry RN: BioCAD00000016950). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Note

Purine, also known as purine base or 1H-purine, belongs to the class of organic compounds known as purines and purine derivatives. These are aromatic heterocyclic compounds containing a purine moiety, which is formed a pyrimidine-ring ring fused to an imidazole ring. Two of the bases in nucleic acids, adenine and guanine, are purines. Purines from food (or from tissue turnover) are metabolised by several enzymes, including xanthine oxidase, into uric acid. Purine exists in all living species, ranging from bacteria to humans. High levels of uric acid can predispose to gout when the acid crystalises in joints; this phenomenon only happens in humans and some animal species (e.g. dogs) that lack an intrinsic uricase enzyme that can further degrade uric acid. In humans, purine is involved in thioguanine action pathway. Outside of the human body, purine is found, on average, in the highest concentration within cocoa beans. Purine has also been detected, but not quantified in several different foods, such as rapinis, plains prickly pears, blackcurrants, radish, and parsley. This could make purine a potential biomarker for the consumption of these foods. Purine is a heterocyclic aromatic organic compound, consisting of a pyrimidine ring fused to an imidazole ring.

Entity Information

DBLinks

Other DBLinks
  • CAS Registry Number: 120-73-0
  • CAS Registry Number: 149297-77-8
  • CAS Registry Number: 51953-03-8
  • PubChem: 1044
  • ChEBI: ChEBI:17258
  • ChEBI: ChEBI:35584
  • HMDB: HMDB0001366
  • HMDB: HMDB01366
  • KEGG: C15587
  • BioCyc: PURINE
  • BioCyc: PURINE-RING
  • NCBI MeSH: purine
  • Wikipedia: Purine
  • RefMet: RM0032998
  • MoNA: BAF_UVA_POS001406
  • MoNA: BAF_UVA_POS001407
  • MoNA: BAF_UVA_POS001408
  • MoNA: CCMSLIB00000577885
  • MoNA: CCMSLIB00000578097
  • MoNA: CCMSLIB00005463916
  • MoNA: CCMSLIB00005720599
  • MoNA: CCMSLIB00005720617
  • MoNA: EMBL-MCF_spec91714
  • MoNA: EMBL-MCF_spec91755
  • MoNA: EMBL_MCF_2_0_HRMS_Library000078
  • MoNA: EMBL_MCF_2_0_HRMS_Library000313
  • MoNA: FiehnHILIC000714
  • MoNA: FiehnHILIC001471
  • MoNA: FiehnHILIC002282
  • MoNA: FiehnHILIC002950
  • MoNA: HMDB0001366_c_ms_1197
  • MoNA: HMDB0001366_c_ms_1224
  • MoNA: HMDB0001366_ms_ms_1531
  • MoNA: HMDB0001366_ms_ms_1532
  • MoNA: HMDB0001366_ms_ms_1533
  • MoNA: KO003748
  • MoNA: KO003749
  • MoNA: KO003750
  • MoNA: KO003751
  • MoNA: KO003752
  • MoNA: MoNA002264
  • MoNA: MoNA002266
  • MoNA: MoNA002267
  • MoNA: MoNA016787
  • MoNA: MoNA024258
  • MoNA: MoNA031928
  • MoNA: MoNA031929
  • MoNA: MoNA031930
  • MoNA: MoNA033831
  • MoNA: MoNA033832
  • MoNA: MoNA033833
  • MoNA: MoNA037092
  • MoNA: MoNA037796
  • MoNA: MoNA_0006467
  • MoNA: MoNA_0006468
  • MoNA: MoNA_0006469
  • MoNA: MoNA_0006470
  • MoNA: MoNA_0006472
  • MoNA: MoNA_0006473
  • MoNA: MoNA_0007590
  • MoNA: MoNA_0007591
  • MoNA: MoNA_0007592
  • MoNA: MoNA_0007593
  • MoNA: MoNA_0007594
  • MoNA: MoNA_0007595
  • MoNA: MoNA_0007985
  • MoNA: MoNA_0008253
  • MoNA: MoNA_0008255
  • MoNA: MoNA_0008256
  • MoNA: MoNA_0008257
  • MoNA: MoNA_0008258
  • MoNA: MoNA_0008260
  • Metlin: METLIN_6193
  • Coconut NaturalProduct: CNP0139134.0

Class / Ontology

Metabolic Network
ID EC Number Name
KEGG:R02341 3.2.2.1 N-D-ribosylpurine ribohydrolase
KEGG:R08368 2.4.2.1 purine-nucleoside:phosphate ribosyltransferase
KEGG:R10244 2.4.2.1 purine-deoxynucleoside:phosphate ribosyltransferase
BioCyc:RXN-8753 1.17.1.4 PURINE + WATER + NAD --> CPD-9017 + NADH + PROTON
BioCyc:TRANS-RXN-195 PURINE + PROTON --> PURINE + PROTON
BioCyc:RXN-8755 1.17.99.- PURINE + WATER + Acceptor --> HYPOXANTHINE + Donor-H2
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Organism Source

Taxonomy Source

  1. Arachis hypogaea [ncbi taxid: 3818]

Pathway Synthetic

pathway id name
BioCyc:META_PWY-5497 purine nucleobases degradation II (anaerobic)
BioCyc:PCHR_PWY-5497 purine nucleotides degradation IV (anaerobic)
BioCyc:THAPS_P164-PWY purine nucleotides degradation III (anaerobic)
BioCyc:PDIF272563_P164-PWY purine nucleobases degradation I (anaerobic)
BioCyc:SCO_P164-PWY purine nucleobases degradation I (anaerobic)
BioCyc:THAPS_PWY-5497 purine nucleotides degradation IV (anaerobic)
BioCyc:META_P164-PWY purine nucleobases degradation I (anaerobic)
BioCyc:PCHR_P164-PWY purine nucleotides degradation III (anaerobic)
BioCyc:CLOSSAC_PWY-5497 purine nucleobases degradation II (anaerobic)
BioCyc:CLOSSAC_P164-PWY purine nucleobases degradation I (anaerobic)
PlantCyc:CORN_PWY-6227 purine uptake
PlantCyc:PLANT_PWY-6227 purine uptake
View All Pathways