Metabolite Card
Formula: NH4 (18.0344)
SMILES: [NH4+]
Synonyms [en]
ammonium; Azanium; Ammonium(1+); NH4+; NH4(+); Ammonium ion
Last reviewed on 2024-06-28.
Cite this Page
NH4+. 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: BioCAD00000015166). Licensed
under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).
Note
Ammonium is an important source of nitrogen for many plant species, especially those growing on hypoxic soils. However, it is also toxic to most crop species and is rarely applied as a sole nitrogen source. The ammonium (more obscurely: aminium) cation is a positively charged polyatomic cation with the chemical formula NH4+. It is formed by the protonation of ammonia (NH3). Ammonium is also a general name for positively charged or protonated substituted amines and quaternary ammonium cations (NR4+), where one or more hydrogen atoms are replaced by organic radical groups (indicated by R). Ammonium is found to be associated with N-acetylglutamate synthetase deficiency, which is an inborn error of metabolism.
DBLinks
- CAS Registry Number: 14798-03-9
- PubChem CID: 16741146
- ChEBI: 28938
- HMDB: HMDB0041827
- LipidMaps:
- KEGG: C01342
- BioCyc: AMMONIUM
- NCBI MeSH: Ammonium Compounds
- Wikipedia: Ammonium
Other DBLinks
- CAS Registry Number: 14798-03-9
- CAS Registry Number: 15194-15-7
- CAS Registry Number: 19496-55-0
- CAS Registry Number: 92075-50-8
- PubChem: 16741146
- PubChem: 223
- ChEBI: ChEBI:28938
- HMDB: HMDB0041827
- HMDB: HMDB41827
- KEGG: C01342
- BioCyc: AMMONIUM
- NCBI MeSH: Ammonium Compounds
- Wikipedia: Ammonium
- Metlin: METLIN_96153
Class / Ontology
- WishartLab ClassyFire: [Homogeneous other non-metal compounds] Homogeneous other non-metal compounds
- ChEBI: [CHEBI:28938] ammonium
| ID | EC Number | Name |
|---|---|---|
| BioCyc:CYTIDEAM-RXN | 3.5.4.5 | PROTON + WATER + DEOXYCYTIDINE --> DEOXYURIDINE + AMMONIUM |
| BioCyc:NAD-SYNTH-NH3-RXN | 6.3.1.5 | AMMONIUM + ATP + DEAMIDO-NAD --> PROTON + AMP + PPI + NAD |
| BioCyc:ADENINE-DEAMINASE-RXN | 3.5.4.2 | PROTON + WATER + ADENINE --> AMMONIUM + HYPOXANTHINE |
| BioCyc:RXN-16910 | CPD-18238 + AMMONIUM --> CARBAMATE + Pi + 2 PROTON | |
| BioCyc:GLUTDEHYD-RXN | 1.4.1.4 | PROTON + AMMONIUM + 2-KETOGLUTARATE + NADPH --> GLT + WATER + NADP |
| BioCyc:GLUTAMINESYN-RXN | 6.3.1.2 | AMMONIUM + GLT + ATP --> PROTON + GLN + ADP + Pi |
| BioCyc:4.3.1.17-RXN | 4.3.1.17 | SER --> PYRUVATE + AMMONIUM |
| BioCyc:ASNSYNA-RXN | 6.3.1.1 | ATP + L-ASPARTATE + AMMONIUM --> PPI + AMP + ASN + PROTON |
| BioCyc:ADDALT-RXN | 3.5.4.4 | PROTON + WATER + DEOXYADENOSINE --> AMMONIUM + DEOXYINOSINE |
| BioCyc:RXN-8899 | 2-AMINOACRYLATE + WATER --> PYRUVATE + AMMONIUM | |
| BioCyc:RXN-17900 | PHOSPHORIBULOSYL-FORMIMINO-AICAR-P + AMMONIUM --> D-ERYTHRO-IMIDAZOLE-GLYCEROL-P + AICAR + WATER + PROTON | |
| BioCyc:ASPARAGHYD-RXN | 3.5.1.38 | ASN + WATER --> L-ASPARTATE + AMMONIUM |
| BioCyc:GLUCOSAMINE-6-P-DEAMIN-RXN | 3.5.99.6 | CPD-13469 + WATER<=>FRUCTOSE-6P + AMMONIUM |
| BioCyc:GLUTAMIN-RXN | 3.5.1.38 | GLN + WATER --> GLT + AMMONIUM |
| BioCyc:RXN-15127 | 3.5.99.10 | CPD-16015 + WATER --> PYRUVATE + AMMONIUM |
| BioCyc:2.3.2.13-RXN | 2.3.2.13 | Protein-L-glutamine + Protein-L-lysine --> Protein-N6-5-glutamyl-lysine-crosslinks + AMMONIUM |
| BioCyc:CYTIDEAM2-RXN | 3.5.4.5 | PROTON + WATER + CYTIDINE --> URIDINE + AMMONIUM |
| BioCyc:RXN-14325 | ATP + UTP + AMMONIUM --> ADP + Pi + CTP + 2 PROTON | |
| BioCyc:RXN-13202 | 6.3.4.16 | 2 ATP + HCO3 + AMMONIUM --> 2 ADP + Pi + CARBAMOYL-P + 2 PROTON |
| BioCyc:RXN0-1081 | 3.5.4.- | PROTON + tRNA-Arg-adenosine34 + WATER<=>tRNA-Arg-inosine34 + AMMONIUM |
Taxonomy Source
Pathway Synthetic
| pathway id | name |
|---|---|
| PathBank:SMP0000791 | D-Alanine Metabolism |
| PathBank:SMP0000792 | D-Glutamine and D-Glutamate Metabolism |
| PathBank:SMP0000810 | L-Alanine Metabolism |
| PathBank:SMP0000811 | L-Glutamate Metabolism |
| PathBank:SMP0000812 | Arginine Metabolism |
| PathBank:SMP0000813 | Ornithine Metabolism |
| PathBank:SMP0000829 | Serine Biosynthesis and Metabolism |
| PathBank:SMP0000833 | Asparagine Biosynthesis |
| PathBank:SMP0000835 | Tryptophan Metabolism |
| PathBank:SMP0000838 | Isoleucine Biosynthesis |
| PathBank:SMP0000847 | Glycolate and Glyoxylate Degradation |
| PathBank:SMP0000849 | NAD Biosynthesis |
| PathBank:SMP0000850 | NAD Salvage |
| PathBank:SMP0000905 | Amino Sugar and Nucleotide Sugar Metabolism I |
| PathBank:SMP0000906 | Amino Sugar and Nucleotide Sugar Metabolism II |
| PathBank:SMP0000914 | Amino Sugar and Nucleotide Sugar Metabolism III |
| PathBank:SMP0000939 | Sulfur Metabolism |
| PathBank:SMP0000940 | Sulfur Metabolism (Butanesulfonate) |
| PathBank:SMP0000941 | Sulfur Metabolism (Propanesulfonate) |
| PathBank:SMP0000942 | Sulfur Metabolism (Ethanesulfonate) |