XY-His-Z sequence	Protein	Ref.		X			Y				His				Z
			Cα		Cβ	Cα		Cβ	Cα	Cβ		Cδ2	Cε1	Cα		Cβ
DEKHE	YPK9	*	10.77		6.87	6.21		−1.54	3.17	1.45		−3.70	1.51	−0.11		−0.03
SRSHT	Cap43	[52]	11.07		−3.55	6.67		1.11	1.26	1.36		−3.23	1.02	−0.28		−0.09
RLAHY	Histone H2B	[39]	10.9		NA	5.9		1.7	1.9	NA		NA	NA	−1.6		NA
LAKHA	Histone H2B	[20]	10.1		0.73	5.31		NA	3.09	1.45		NA	NA	3.98		3.58
DAHK	Albumin	[6]	NA		NA	NA		NA	NA	NA		−2.59	1.1	NA		NA
GTHS	Prion	[41]	5.5		−1.2	7		−1.2	−3	0.7		−2	0	0		0

* Unpublished data. For information about –DEKHE- sequence of YPK9 protein see Refs. [58,59].