Table 3.

iTRAQ differentially regulated proteins

Proteins are indicated by the maize GDB accession ID. Fold changes indicate upregulated (≥1.5) and downregulated (≤0.7) proteins, according to the +N/–N treatment ratio. Accessions present in both RNA-Seq and iTRAQ lists are shown in bold.

Accession	Fold change	Description
Glycolysis, gluconeogenesis, C-compound and carbohydrate metabolism
GRMZM5G828229	1.6	Dihydrolipoyl dehydrogenase
GRMZM2G440208	1.5	6-Phosphogluconate dehydrogenase
GRMZM2G166767	0.6	RHM1
Nitrogen metabolism, amino acid metabolism and protein/peptide degradation
GRMZM2G102959	3.9	Ferredoxin–nitrite reductase
GRMZM2G050514	1.7	Glutamine synthetase root isozyme 1
Cell defence
GRMZM2G051943	0.7	CHIA endochitinase A
GRMZM2G125893	0.7	Nucleoside diphosphate kinase
GRMZM2G373522	0.5	DHN-2 dehydrin
GRMZM2G108219	0.6	Peroxidase 11
GRMZM2G088765	0.5	Peroxidase 54
GRMZM2G044049	0.5	Similar to peroxidase
GRMZM2G427937	0.5	Peroxidase
Post-transcriptional and post-translational mechanisms
GRMZM2G160994	1.7	PPR-like superfamily protein
AC233872.1	0.7	Mitochondrial glycoprotein
GRMZM2G464401	0.7	Plasminogen activator inhibitor 1 RNA-binding protein
GRMZM2G176707	0.6	Nucleosome/chromatin assembly factor group A
GRMZM2G045503	0.6	Similar to RNA-binding protein
GRMZM2G161746	0.6	Trypsin inhibitor heavy chain H3
GRMZM2G116282	0.6	Plasminogen activator inhibitor 1 RNA-binding protein
GRMZM2G157470	0.5	Brain acid soluble protein 1
Cytoskeleton organization/vesicles trafficking
GRMZM2G071089	0.6	DREPP2
GRMZM2G001514	0.6	Fasciclin-like arabinogalactan protein 7
GRMZM2G137236	0.6	AP-2 complex, alpha subunit
GRMZM2G123558	0.7	DREPP4 protein
Others
GRMZM2G109130	1.5	Lipoxygenase
GRMZM2G051270	1.5	ATP sulfurylase, sulfurylase 4, chloroplastic
GRMZM2G120876	1.5	Probable mitochondrial import receptor subunit TOM40-2
GRMZM2G358059	0.6	CRT1 calreticulin
GRMZM2G013461	0.6	CC4 multidomain cystatin