Table 1.

Database description.

Column name	Description
sampleID	Unique identifier for every sample
sampleName	Sample Name used during experiment
runID	Technical replicate number
protIsotype	proteasome isoform used for digestion
digestTime	Elapsed digestion time (hours) at time of measurement
species	species origin for used proteasome
sampleDate	Sample date
instrument	Instrument used for measurement
fragmentation	Fragmentation method used for measurement
substrateOrigin	Biological origin of substrate
location	Measurement location
substrateSeq	Amino acid sequence of substrate
substrateID	Unique identifier for a substrate sequence
pepSeq	Amino acid sequence of peptide products
scanNum	Scan Number listed in the RAW file
rankMS	Peptide rank assigned by Mascot Server
ionScore	Ion Score assigned by Mascot Server
qValue	Q-Value assigned by Mascot Server
productType	PCP: non-spliced peptide; PSP: spliced peptide
spliceType	PSP: cis, reverse cis or trans spliced peptides
positions	Peptide sequence described as amino acid positions in the substrate sequence
charge	Ion charge
PTM	Post-translational modifications

Listed are the column names (i.e. Attributes) in the database and their corresponding explanations.