Note - Blast analyses are based on comparisons of the phosphosites and the bordering four amino acids on each side of these phosphosites.

Phosphosite
Human Protein:	HTRA1
Human P-Site:	S298
P-Site Sequence:	TVTTGIVSTTQRGGK
UniProt:	Q92743
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	HTRA1	Q92743	S298	TVTTGIVSTTQRGGK	100 / 9 AA	51
Phosphosite 1:	HtrA2	O43464	S276	TITSGIVSSAQRPAR	66 / 9 AA	49
Phosphosite 2:	HTRA1	Q92743	T300	TTGIVSTTQRGGKEL	100 / 7 AA	51
Phosphosite 3:	HtrA2	O43464	S277	ITSGIVSSAQRPARD	75 / 8 AA	49
Phosphosite 4:	SCMH1	Q96GD3	S521	SNPTNLVSTSQRHRP	66 / 9 AA	73
Phosphosite 5:	PR (Progesterone)	P06401	S866	RQKGVVSSSQRFYQL	62 / 8 AA	99
Phosphosite 6:	SAMD4	Q9UPU9	S622	GTSGFVSSNQRNTTA	62 / 8 AA	59
Phosphosite 7:	NPPA	P01160	S88	PPWTGEVSPAQRDGG	66 / 9 AA	17
Phosphosite 8:	FLRT3	Q9NZU0	T363	KDSGIVSTIQITTAI	85 / 7 AA	73
Phosphosite 9:	ZNF761	Q86XN6	S175	IHDASLVSTAQRISC	55 / 9 AA	88
Phosphosite 10:	ZNF765	Q7L2R6	S175	IHDASLVSTAQRISC	55 / 9 AA	62
Phosphosite 11:	TECTA	O75443	S593	RTQTGCVSTVQCPSF	66 / 9 AA	240
Phosphosite 12:	ZNF845	Q96IR2	T176	NSASLVSTSQRISCR	62 / 8 AA	113
Phosphosite 13:	TFDP2	Q14188	T66	GPQMIISTPQRLTSS	71 / 7 AA	49
Phosphosite 14:	SCMH1	Q96GD3	S523	PTNLVSTSQRHRPLL	71 / 7 AA	73
Phosphosite 15:	ZNF761	Q86XN6	T176	HDASLVSTAQRISCR	62 / 8 AA	88
Phosphosite 16:	ZNF765	Q7L2R6	T176	HDASLVSTAQRISCR	62 / 8 AA	62
Phosphosite 17:	TFDP2	Q14188	S65	VGPQMIISTPQRLTS	71 / 7 AA	49
Phosphosite 18:	ZNF845	Q96IR2	S177	SASLVSTSQRISCRP	71 / 7 AA	113
Phosphosite 19:	CMYA3	A4UGR9	T242	SSTSCVSTSQRKETS	62 / 8 AA	382
Phosphosite 20:	Separase	Q14674	T89	CDGYLVSTPQRPPLY	71 / 7 AA	233