              Data items in the ENTITY_KEYWORDS category specify keywords\
               relevant to the molecular entities. Note that this list of\
               keywords is separate from the list that is used for the\
               STRUCT_BIOL data items, and is intended to provide only the\
               information that one would know about the molecular entity *if\
               one did not know its structure*. Hence polypeptides are simply\
               polypeptides, and not cytokines or beta-alpha-barrels, and\
               polyribonucleic acids are simply poly-RNA, and not transfer-\
               RNA.