Table 3.

Protein phosphorylation in the different fractions. Shown are all proteins for one at least one phosphorylated peptide was observed in any of the replicas. Given is the tentative function, the ATG number, the identification (x) in cytoplasm (CYT), nucleus (NUC) or nucleolus (NOC) as well as the number of replicas in which phosphorylation was observed. In case that phosphorylation is observed, the last column gives the number and the modified amino acid in the 3 letter code. A-Orthologue to protein in hNoPDB, B-Orthologue to human RBF, C-Orthologue to yeast RBF, D-Protein without ortholog in yeast or human, esplicing factor. Numbers in bold show detection in ¹⁶O and ¹⁸O samples.

		Localization			Phosphorylation
Protein function	ATG	CYT	NUC	NOC	CYT	NUC	NOC	Modified AA
ADL6d	At1g10290	x	x	x	1	2	4	Ser-533/639/837; Thr-532
Histone	At1g09200		x			1		Thr-108
PDR7d	At1g15210		x	x			1	Thr-893
atNTT2d	At1g15500	x	x	x	1	4		Ser-588/589
PGM3	At1g23190	x	x	x			1	Thr-56
Thiamin bindinga	At1g24180	x	x	x		4		Thr-369/Tyr-372
MOS2	At1g33520	x	x	x	1	1		Tyr-51
pre-mRNA processing 40Ae	At1g44910	x	x	x			2	Ser-387
ADL3d	At1g59610	x	x	x	1	4	3	Ser-533/844; Thr-532
ABC transporterd	At1g59870	x	x	x		1		Thr-920
CCAR1b	At2g03150		x			3		Ser-906
DNA binding proteind	At2g33620		x	x		2	2	Ser-313
Clathrina	At3g08530	x	x	x	1	1		Thr-67; Ser-77
HD2Ad	At3g44750		x	x		1	1	Ser-103
Aldolasea	At3g52930	x	x	x		1		Tyr-169
Ubiquitin	At4g23040	x	x			1		Ser-362
FPR4c	At4g25340	x	x	x		2	1	Ser-209
Chromatin silencingd	At4g31880	x	x	x	1	2	3	Thr-289
Tubulina	At4g38680	x	x		1			Ser-14
atNADP	At5g11670	x	x	x	1	1		Thr-139
TUA3a	At5g19770	x	x	x			1	Ser-379
ADL1d	At5g42080		x	x		1		Ser-168
DNA Polb	At5g64420	x	x	x		1		Ser-44
14-3-3 kappa	At5g65430	x	x	x	1	1		Ser-70/71
RPP0	at3g09200	x	x	x		1		Ser-305
RPP1	at1g01100	x	x	x		1	1	Ser-102
RPP1	at4g00810	x	x	x		1	1	Ser-103
RPP1	at5g47700	x	x	x		2		Ser-103
RPP2A	at2g27710	x	x	x			1	Ser-105
RPP2A	at2g27720	x	x	x			1	Ser-105