Table 3.

General characteristics of the metallodependent PSP sequences from the M24B subfamily.

PSP	Sequence Name	Residues of Mn2+-Binding Sites
		I	I/II	II	II	I/II
APP1	APP1_Hs	D415	D426	H489	E523	E537
	APP1.1_Tc	D	D	H	E	E
	APP1.2_Tc	D	D	H	E	E
	APP1_Tm	D	D	H	E	E
APP2	APP2_Hs	D	D	H	E	E
	APP2_Tm	D	D	H	E	E
APP3	APP3_Hs	D	D	H	E	E
	APP3_Tc	D	D	H	E	E
	APP3_Tm	D	D	H	E	E
XPD	XPD_Hs	D	D	H	E	E
	XPD_Tc	D	D	H	E	E
	XPD_Tm	D	D	H	E	E