Peptide Sequence: DGDRETERIY SLFNLYMSKL EKMQEACGSK SVYDGPEQEE YSTFVIDDPQ ETYKTLKQVI AGVGALEQEH AQYKRDKFKK TKYGSQEHPI GDKSFQNYIR QQSETSTHSI. Human GAP1-InsP4 BP, also designated Ras p21 protein activator (GTPase-activating protein) 3 [Ins(1,3,4,5)P4-bindi