Table 9 Parameters setting of MASCOT engine.

From: Carbon and nitrogen partitioning of transgenic rice T2A-1 (Cry2A*) with different nitrogen treatments

Item

Value

Enzyme

Trypsin

Max Missed Cleavages

2

Fixed modifications

Carbamidomethyl (C),

iTRAQ 8plex (N-term), iTRAQ 8plex (K)

Variable modifications

Oxidation (M), iTRAQ 8plex (Y)

Peptide Mass Tolerance

±20 ppm

Fragment Mass Tolerance

0.1 Da

Database

uniport _Oryza_sativa_168274 _ 20170123.fasta

Database pattern

Decoy

Peptide FDR

≤0.01

Protein Quantification

The protein ratios are calculated as the median of only unique peptides of the protein

Experimental Bias

Normalizes all peptide ratios by the median protein ratio. The median protein ratio should be 1 after the normalization.