passages.id: 1.0alpha7.train.435.sent
passages.type: sentence
passages.text: The basic properties of the side chain of lysine 13, together with the observation that ATP protected this residue against modification by pyridoxal phosphate, not only argues for an active-site location for this lysine but also prompts speculation that lysine 13 could stabilize ATP binding because of interaction between the positively charged ϵ-amino group and the negatively charged phosphoryl groups of ATP.
coreferences.id: 1.0alpha7.train.435.coref0
coreferences.entity_ids: 1.0alpha7.train.435.ent0_0 1.0alpha7.train.435.ent1_1 1.0alpha7.train.435.ent2_2