YEL031W SPF1 SGDID:S000000757, Chr V from 90258-93905, Genome Release 64-1-1, Verified ORF, "P-type ATPase, ion transporter of the ER membrane involved in ER function and Ca2+ homeostasis; required for regulating Hmg2p degradation; confers sensitivity to a killer toxin (SMKT) produced by Pichia farinosa KK1"