Correction: Comparative Analysis of Label-Free and 8-Plex iTRAQ Approach for Quantitative Tissue Proteomic Analysis

Tables 1 and 5 are incorrectly aligned due to errors introduced in the production process. The publisher apologizes for the errors. Please see the corrected Tables 1 and 5 here.

Table 1. Overview of the number of peptides and the corresponding proteins as being identified in the individual MS-runs.

Method	Sample ID	# peptide groups	# protein groups
LFQ	3_pTa	5073	1096
	11_pTa	5269	1099
	16_pTa	5725	1185
	19_pTa	3931	937
	Mean (SD)_pTa	5000 ± 763	1079 ± 103
	9_pT2+	5360	1130
	12_pT2+	5112	1136
	15_pT2+	5516	1169
	17_pT2+	5485	1155
	Mean (SD)_pT2+	5368 ± 184	1148 ± 18
iTRAQ	10 μg	1859	664
	fractionation	6099	2064

Table 5. Comparison of the quantification results at the peptide and protein level for identifications with conflicting expression trends between fractionated iTRAQ and LFQ.

Protein/ Peptide		Peptide Log2 Ratio (pT2+ vs. pTa)		Protein Log2 Ratio (pT2+ vs. pTa)
Protein Name	Peptide sequence used for quantification	iTRAQ + fractionation	LFQ	iTRAQ + fractionation	LFQ
Heterochromatin protein 1-binding protein 3	eASYSLIR	-0.24	0.03	-0,30	0.72
	mDAILTEAIk	-0,37	0.32
	tIPSWATLSASQLAR	-0.30	0.41
	SSAVDPEPQVK	-	1.31
	LEDVLPLAFTR	-	0.24
	GASGSFVVVQK	-	5.12
Actin-related protein 2/3 complex subunit 3	aYLQQLR	0.01	0.61	-0.25	0.37
	lIGNMALLPIR	-0.43	-0.06
	lIGNmALLPIR	-0.34	-
Dolichyl-diphosphooligosaccharide—protein glycosyltransferase subunit 2	sIVEEIEDLVAR	0,21	2.46	-0.06	1.23
	eDQVIQLMNAIFSk	-0.36	-
	fELDTSER	0.15	-
	nFESLSEAFSVASAAAVLSHNR	-0.12	-
	qEIQHLFR	0.09	-
	yHVPVVVVPEGSASDTHEQAILR	-0.38	0.62
	LQVTNVLSQPLTQATVK	-	0.33
	ISTEVGITNVDLSTVDKDQSIAPK	-	1.78
	NPILWNVADVVIK	-	3.65
	YIANTVELR	0.06	3.15
KH domain-containing, RNA-binding, signal transduction-associated protein 1	KDDEENYLDLFSHK	-	0.39	-0.25	0.63
	ILGPQGNTIK	-	0.55
	DSLDPSFTHAMQLLTAEIEK	-	2.42
	SGSMDPSGAHPSVR	0.06	0.68
	qPPLPHR	-0.56	-
General vesicular transport factor p115	SSQTSGTNEQSSAIVSAR	-	0.27	-0.10	0.52
	SQLNSQSVEITK	-	0.25
	NDGVLLLQALTR	-0,23	2.44
	eQDLQLEELR	-0.47	-
	qSEDLGSQFTEIFIk	0.31	-
	vASSTLLDDRR	-0.00007	-