| Entry | The KEGG COMPOUND database is a manually curated collection of metabolites and other small molecules, both endogenous and exogenous, that are relevant to biochemical reactions, interactions, and pathways. Each entry is identified by the unique identifier called the C number ('C' followed by five-digit number). |
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| Name | The recommended name and alternative names of the compound. |
| Formula | The molecular formula of the compound. |
| Exact mass | The exact mass of the compound. |
| Mol weight | The molecular weight of the compound. |
| Structure | The chemical structure (structural formula) of the compound is manually entered by KEGG and is stored in an MDL/MOL file (Mol file button) and a KCF file (KCF file button), the latter being used for chemical structure comparisons (DB search button). A GIF image of the chemical structure is shown here, and it can be viewed in a separate window by clicking on the image. Jmol and KegDraw buttons launches the Java programs Jmol and KegDraw, respectively, for viewing and manipulating the chemical structure. |
| Sequence | The sequence information, if any, for peptide, polyketide, and nonribosomal peptide entries. |
| Remark | The same compounds in the COMPOUND, DRUG, and GLYCAN databases, if any, are given. Monosaccharides and small oligosaccharides are registered in both the COMPOUND and GLYCAN databases. The same chemical substance may be registered in both the COMPOUND and DRUG databases. |
| Comment | Free text comment. |
| Reaction | Links to the REACTION database entries, where the compound appears as a substrate or a product. |
| Pathway | Liks to the KEGG pathway maps, where the corresponding compound is marked in red. |
| Module | KEGG modules (complete modules only) that contain this compound entry. By clicking on the link, the corresponding circular object is marked red in the module map. |
| Enzyme | Links to the ENZYME database entries, where the compound appears as a substrate or a product. |
| Brite | This field contains compound classifications in the BRITE database. The "BRITE hierarchy" buttom may also be used to display these classifications. |
| Reference | Refereces about this compound. |
| Other DBs | Links to outside databases. |
| LinkDB | 'All DBs' button in this field retrieves all available links to related database entries in the LinkDB system. At GenomeNet this field does not appear; instead a list of actual links is displayed on the right. |
| KCF data | The KCF (KEGG Chemical Function) representation of the chemical structure can be displayed here. It contains the KEGG atom type information for use in chemical structure comparisons. |