. Author manuscript; available in PMC: 2014 Jul 1.

Published in final edited form as: J Bone Miner Res. 2013 Jul;28(7):1587–1598. doi: 10.1002/jbmr.1901

Table 2.

Phosphopeptide sequences obtained from TiO2-LC-MS/MS analysis. All phosphorylation sites are non-localized except the one contains Ser 287. Residue numbers were based on the OPN isoform NP_001191131. The bottom row contains the total number of the spectral counts of individual phosphopeptides in each genotype.

phosphopeptide sequence	Bone ColTg	Bone WT	Bone ColTg; Alpl^−/−	Bone Alpl^−/−	Ostb WT	Ostb ColTg; Alpl^−/−	Ostb Alpl^−/−
	Vp(T³⁸DS⁴⁰GS⁴²S⁴³EEKLYS⁴⁹)LHPDPIATWL	21	0	7	1	0	0	0
	p(S¹⁷⁴FQVS¹⁷⁸DEQY¹⁸²PDAT¹⁸⁶DEDLT¹⁹¹)SHMK	0	53	91	84	0	0	18
p(S¹⁹²HMKS¹⁹⁶GES¹⁹⁹KES²⁰²)LDVIPVAQLL	7	11	13	36	3	0	2
LEHp(S²⁴⁴KES²⁴⁷QES²⁵⁰)ADQSDVIDSQASSK	0	8	7	31	0	0	4
LVLDPK(pS²⁸⁷)KEDDR	29	39	59	31	7	9	38
FRIpp(S²⁹⁹HELES³⁰⁴S³⁰⁵S³⁰⁶S³⁰⁷)EVN	25	22	24	21	1	0	4
FRIp(S²⁹⁹HELES³⁰⁴S³⁰⁵S³⁰⁶S³⁰⁷)EVN	51	36	65	63	8	10	38
	133	169	266	267	19	19	100