PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9882653-4 1999 A heterologous system consisting of acetyl phosphate, the bacterial chemotaxis response regulator CheY, and YPD1 has been developed as an efficient means of phosphorylating SLN1 and SSK1 in vitro. acetyl phosphate 36-52 histidine kinase Saccharomyces cerevisiae S288C 173-177