passages.id: 1.0alpha7.train.844.sent
passages.type: sentence
passages.text: To further narrow down the  TEF-1-binding region of  SRF, we analyzed an additional  SRF mutant containing amino acids 1-204.
coreferences.id: 1.0alpha7.train.844.coref0
coreferences.entity_ids: 1.0alpha7.train.844.ent0_0
coreferences.id: 1.0alpha7.train.844.coref1
coreferences.entity_ids: 1.0alpha7.train.844.ent1_0 1.0alpha7.train.844.ent2_1