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:	PARP8
Human P-Site:	S439
P-Site Sequence:	SYSSAPKSSKTELFK
UniProt:	Q8N3A8
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PARP8	Q8N3A8	S439	SYSSAPKSSKTELFK	100 / 9 AA	96
Phosphosite 1:	PIK3R1	P27986	S101	PLPVAPGSSKTEADV	87 / 8 AA	84
Phosphosite 2:	ZNF7	P17097	S80	GTEAPRTSKTDSTIR	62 / 8 AA	78
Phosphosite 3:	ZNF7	P17097	T79	EGTEAPRTSKTDSTI	62 / 8 AA	78
Phosphosite 4:	DDX21	Q9NR30	S38	EKKEKPKSDKTEEIA	85 / 7 AA	87
Phosphosite 5:	SH3KBP1	Q96B97	S257	ATTATPDSSKTEMDS	75 / 8 AA	73
Phosphosite 6:	KIFC2	Q96AC6	S749	GRQSAPSSSPTEWVK	77 / 9 AA	90
Phosphosite 7:	PTPN13	Q12923	S1983	SAVSAPKSTKGNGSY	85 / 7 AA	277
Phosphosite 8:	CNKSR3	Q6P9H4	S535	SGSSATKSSSTEPSL	77 / 9 AA	62
Phosphosite 9:	MUC5AC	P98088	S3711	RTTSAPTSSMTSGPG	75 / 8 AA	527
Phosphosite 10:	BICC1	Q9H694	S616	EQTSPKSSPTEGCND	85 / 7 AA	105
Phosphosite 11:	CXorf66	Q5JRM2	S91	KKGIAAKSSKTSFSE	85 / 7 AA	40
Phosphosite 12:	BICC1	Q9H694	S615	SEQTSPKSSPTEGCN	66 / 9 AA	105
Phosphosite 13:	CXorf66	Q5JRM2	S92	KGIAAKSSKTSFSEA	85 / 7 AA	40
Phosphosite 14:	C12orf45	Q8N5I9	S52	LINSQPKSRKTSTLQ	75 / 8 AA	20
Phosphosite 15:	ATXN2L	Q8WWM7	S597	EPMGSPVSSKTESVS	85 / 7 AA	113
Phosphosite 16:	RASA2	Q15283	S300	PRDNGNKSSKTDDLG	55 / 9 AA	97
Phosphosite 17:	ATXN2L	Q8WWM7	S598	PMGSPVSSKTESVSD	85 / 7 AA	113
Phosphosite 18:	MAP1B	P46821	S2331	ANASASKSAKTATAG	66 / 9 AA	271
Phosphosite 19:	PACS1	Q6VY07	T488	TPMKSSKTDLQGSAS	83 / 6 AA	105
Phosphosite 20:	RASA2	Q15283	S301	RDNGNKSSKTDDLGS	83 / 6 AA	97