| Column | MySQL Type | Oracle Type | Nullable | Description | 
|---|---|---|---|---|
| WID | BIGINT | NUMBER | No | WID of this enzymatic reaction | 
         
| ReactionWID | BIGINT | NUMBER | No | WID of the catalyzed reaction | 
         
| ProteinWID | BIGINT | NUMBER | No | WID of the enzyme | 
         
| ComplexWID | BIGINT | NUMBER | Yes | WID of protein of which ProteinWID must be a subunit of for this reaction  | 
         
| ReactionDirection | VARCHAR | VARCHAR2(30) | Yes | Reaction Direction Enumeration Enumerated Values: 
            reversible - Reaction occurs in both directions in physiological settings. physiol-left-to-right - Reaction occurs in the left-to-right direction in physiological settings. physiol-right-to-left - Reaction occurs in the right-to-left direction in physiological settings. irreversible-left-to-right - For all practical purposes, the reaction occurs only in the left-to-right direction in physiological settings, because of chemical properties of the reaction. irreversible-right-to-left - For all practical purposes, the reaction occurs only in the right-to-left direction in physiological settings, because of chemical properties of the reaction.  | 
         
| DataSetWID | BIGINT | NUMBER | No | WID of the dataset the reaction is from | 
         
| Table | Column | 
|---|---|
| EnzReactionCofactor | EnzymaticReactionWID | 
| EnzReactionAltCompound | EnzymaticReactionWID | 
| EnzReactionInhibitorActivator | EnzymaticReactionWID | 
| Entry | OtherWID | 
| Support | OtherWID | 
| RelatedTerm | OtherWID | 
| CitationWIDOtherWID | OtherWID | 
| CommentTable | OtherWID | 
| CrossReference | OtherWID | 
| CrossReference | CrossWID | 
| Description | OtherWID | 
| DBID | OtherWID | 
| SynonymTable | OtherWID | 
| ToolAdvice | OtherWID | 
| Name | Columns | 
|---|---|
| ER_DATASETWID | DataSetWID | 
| ER_REAWID | REACTIONWID | 
| ER_PROWID | PROTEINWID | 
| ER_COMWID | COMPLEXWID | 
| ER_DIRWID | REACTIONDIRECTION |