passages.id: split_4_test_978_passage
passages.type: progene_text
passages.text: Among 11 mutations in M6 , 1 , Q791A , increased the inhibitory shift ( - 0.59 pCa units ) and 5 , V795A (-0.11 ) , L802A ( - 0.07 ) , L802V ( - 0.04 ) , T805A ( - 0.11 ) , and F809A (-0.12 ) , reduced the inhibitory shift , consistent with the view that Val(795) , Leu(802) , Thr(805) , and Phe(809) , located on one face of a predicted M6 helix , form a site in SERCA1a for interaction with PLN .