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:	PABPC4
Human P-Site:	S456
P-Site Sequence:	MPSAIRQSGPRPTLR
UniProt:	Q13310
Intern. Prot. ID:	IPI00012726

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PABPC4	Q13310	S456	MPSAIRQSGPRPTLR	100 / 9 AA	71
Phosphosite 1:	APS	O14492	S447	GLFVIRQSETRPGEY	66 / 9 AA	68
Phosphosite 2:	GAS2L2	Q8NHY3	S701	GKLGARQSGPRTKAS	100 / 6 AA	97
Phosphosite 3:	LETM1	O95202	T296	FFQKIRETGERPSNE	62 / 8 AA	83
Phosphosite 4:	USP20	Q9Y2K6	S891	PEIAIRQSVAQPLGP	66 / 9 AA	102
Phosphosite 5:	ZNF509	Q6ZSB9	T530	VKHRIRHTGERPYSC	62 / 8 AA	85
Phosphosite 6:	PCF11	O94913	S524	KAGKIRQSGAKQSHM	62 / 8 AA	173
Phosphosite 7:	IL22RA1	Q8N6P7	S307	QYSQIRVSGPREPAG	85 / 7 AA	63
Phosphosite 8:	RPS5	P46782	S119	LVNAIINSGPREDST	75 / 8 AA	23
Phosphosite 9:	MS4A1	P11836	S25	KGPIAMQSGPKPLFR	71 / 7 AA	33
Phosphosite 10:	RASA1	P20936	S209	GSYLIRESDRRPGSF	62 / 8 AA	116
Phosphosite 11:	BRD3	Q15059	S281	KVVARRESGGRPIKP	66 / 9 AA	80
Phosphosite 12:	NCRNA00205	P59089	S161	PGLVSPQSGPWP___	83 / 6 AA	19
Phosphosite 13:	MAPKBP1	O60336	S895	DSLAIIPSGPRKHGQ	75 / 8 AA	164
Phosphosite 14:	MRRF	Q96E11	S165	AIKAIRESGMNLNPE	83 / 6 AA	29
Phosphosite 15:	USP21	Q9UK80	S74	ELGRGRTSGPRPRGP	85 / 7 AA	63
Phosphosite 16:	Crk	P46108	S65	SHYIINSSGPRPPVP	75 / 8 AA	34
Phosphosite 17:	C9orf156	Q9BU70	S7	_MRGLEESGPRPTAT	83 / 6 AA	49
Phosphosite 18:	CACNA1B	Q00975	S1119	EADDVMRSGPRPIVP	62 / 8 AA	262
Phosphosite 19:	MLL3	Q8NEZ4	S3377	VSNANPQSGPPPRVE	66 / 9 AA	541
Phosphosite 20:	p37 adaptor	Q14CS0	S17	GEQERRSSGPRPPSA	85 / 7 AA	37