_Entity_natural_src.Sf_ID
| Description | Pointer to '_Entity_natural_src_list.Sf_ID' |
| Details: | |
| This tag contains a saveframe ID unique within BMRB database. It exists only in the database and is not exported to NMR-STAR files. Saveframe IDs are automatically generated and are not expected to be stable between different versions of the BMRB database. | |
| Parent saveframe | natural_source |
| Data type | int |
| DB table | Entity_natural_src |
| DB column | Sf_ID |
| DB type | INTEGER |
| NULL allowed | no (mandatory) |