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Please include the following statement when referencing the CPTAC Assay Portal
We would like to acknowledge the National Cancer Institute’s Clinical Proteomic Tumor Analysis Consortium (CPTAC) Assay Portal (assays.cancer.gov) for developing assays and establishing criteria for the assays described in this publication.

Overview Data source: UniProt

Official Gene Symbol Other Aliases
Ezr Vil2
Sequence Length (AA) Molecular Weight (Da)
586 69407
Protein Name
Ezrin
Sources
UniProt
PhosphoSitePlus ®
GeneCards
Human Protein Atlas

Protein Sequence hover to view complete sequence

10 20 30 40 50
MPKPINVRVT TMDAELEFAI QPNTTGKQLF DQVVKTIGLR EVWYFGLQYV
60 70 80 90 100
DNKGFPTWLK LDKKVSAQEV RKENPVQFKF RAKFYPEDVA EELIQDITQK
110 120 130 140 150
LFFLQVKDGI LSDEIYCPPE TAVLLGSYAV QAKFGDYNKE MHKSGYLSSE
160 170 180 190 200
RLIPQRVMDQ HKLSRDQWED RIQVWHAEHR GMLKDSAMLE YLKIAQDLEM
210 220 230 240 250
YGINYFEIKN KKGTDLWLGV DALGLNIYEK DDKLTPKIGF PWSEIRNISF
260 270 280 290 300
NDKKFVIKPI DKKAPDFVFY APRLRINKRI LQLCMGNHEL YMRRRKPDTI
310 320 330 340 350
EVQQMKAQAR EEKHQKQLER QQLETEKKRR ETVEREKEQM LREKEELMLR
360 370 380 390 400
LQDYEQKTKR AEKELSEQIE KALQLEEERR RAQEEAERLE ADRMAALRAK
410 420 430 440 450
EELERQAQDQ IKSQEQLAAE LAEYTAKIAL LEEARRRKED EVEEWQHRAK
460 470 480 490 500
EAQDDLVKTK EELHLVMTAP PPPPPPVYEP VNYHVQEGLQ DEGAEPMGYS
510 520 530 540 550
AELSSEGILD DRNEEKRITE AEKNERVQRQ LLTLSNELSQ ARDENKRTHN
560 570 580 586
DIIHNENMRQ GRDKYKTLRQ IRQGNTKQRI DEFEAM

Data source: UniProt


Position of Targeted Peptide Analytes Relative to SNPs, Isoforms, and PTMs

Uniprot Database Entry PhosphoSitePlus ®

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to view detailed assay information below
All other points link out to UniProt



Phosphorylation Acetylation Ubiquitylation Other

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Assay Details for CPTAC-1399 Collapse assay details

Data source: Panorama

Official Gene Symbol
EZR
Peptide Sequence
EDEVEEWQHR
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
439
Peptide End
448
CPTAC ID
CPTAC-1399
Peptide Molecular Mass
1,355.5742
Species
Homo sapiens (Human)
Assay Type
Direct MRM
Matrix
depleted digested plasma
Submitting Laboratory
Broad Institute
Submitting Lab PI
Steven A. Carr

Publication

View Details (opens in a new window)

Large-Scale Interlaboratory Study to Develop, Analytically Validate and Apply Highly Multiplexed, Quantitative Peptide Assays to Measure Cancer-Relevant Proteins in Plasma. Abbatiello SE, Schilling B, Mani DR, Zimmerman LJ, Hall SC, MacLean B, Albertolle M, Allen S, Burgess M, Cusack MP, Gosh M, Hedrick V, Held JM, Inerowicz HD, Jackson A, Keshishian H, Kinsinger CR, Lyssand J, Makowski L, Mesri M, Rodriguez H, Rudnick P, Sadowski P, Sedransk N, Shaddox K, Skates SJ, Kuhn E, Smith D, Whiteaker JR, Whitwell C, Zhang S, Borchers CH, Fisher SJ, Gibson BW, Liebler DC, MacCoss MJ, Neubert TA, Paulovich AG, Regnier FE, Tempst P, Carr SA. Mol Cell Proteomics. 2015 Sep;14(9):2357-74. doi: 10.1074/mcp.M114.047050. Epub 2015 Feb 18. PMID: 25693799


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
Quantiva TSQ
Internal Standard
heavy stable isotope peptide (delta 8-10)
Peptide Standard Purity
>95%
Peptide Standard Label Type
15N
LC
Easy NanoLC1000
Column Packing
Reprosil C18, 1.9um, 200A
Column Dimensions
0.075 x 150 mm
Flow Rate
200 nL/min

Chromatograms

Data source: Panorama


Response Curves

Data source: Panorama

Retrieving Data

Loader

Repeatability

Data source: Panorama

  Average intra-assay CV
(within day CV)
Average inter-assay CV
(between day CV)
Total CV
equation
n=
Fragment ion / Transition Low Med High Low Med High Low Med High Low Med High
y5 (2+) 7.9 4 2.6 9.5 6.7 4.5 12.4 7.8 5.2 15 15 15
y4 (1+) 3.6 3 2.6 6.5 6.9 4.3 7.4 7.5 5 15 15 15
y6 (2+) 3.2 2 1.6 4.8 6.5 3.7 5.8 6.8 4 15 15 15
sum 2.5 2.3 1.7 4.8 6.5 3.8 5.4 6.9 4.2 15 15 15


Additional Resources and Comments


Assay Details for CPTAC-1401 Collapse assay details

Data source: Panorama

Official Gene Symbol
EZR
Peptide Sequence
IALLEEAR
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
428
Peptide End
435
CPTAC ID
CPTAC-1401
Peptide Molecular Mass
913.5233
Species
Homo sapiens (Human)
Assay Type
Direct MRM
Matrix
depleted digested plasma
Submitting Laboratory
Broad Institute
Submitting Lab PI
Steven A. Carr

Publication

View Details (opens in a new window)

Large-Scale Interlaboratory Study to Develop, Analytically Validate and Apply Highly Multiplexed, Quantitative Peptide Assays to Measure Cancer-Relevant Proteins in Plasma. Abbatiello SE, Schilling B, Mani DR, Zimmerman LJ, Hall SC, MacLean B, Albertolle M, Allen S, Burgess M, Cusack MP, Gosh M, Hedrick V, Held JM, Inerowicz HD, Jackson A, Keshishian H, Kinsinger CR, Lyssand J, Makowski L, Mesri M, Rodriguez H, Rudnick P, Sadowski P, Sedransk N, Shaddox K, Skates SJ, Kuhn E, Smith D, Whiteaker JR, Whitwell C, Zhang S, Borchers CH, Fisher SJ, Gibson BW, Liebler DC, MacCoss MJ, Neubert TA, Paulovich AG, Regnier FE, Tempst P, Carr SA. Mol Cell Proteomics. 2015 Sep;14(9):2357-74. doi: 10.1074/mcp.M114.047050. Epub 2015 Feb 18. PMID: 25693799


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
Quantiva TSQ
Internal Standard
heavy stable isotope peptide (delta 8-10)
Peptide Standard Purity
>95%
Peptide Standard Label Type
15N
LC
Easy NanoLC1000
Column Packing
Reprosil C18, 1.9um, 200A
Column Dimensions
0.075 x 150 mm
Flow Rate
200 nL/min

Chromatograms

Data source: Panorama


Response Curves

Data source: Panorama

Retrieving Data

Loader

Repeatability

Data source: Panorama

  Average intra-assay CV
(within day CV)
Average inter-assay CV
(between day CV)
Total CV
equation
n=
Fragment ion / Transition Low Med High Low Med High Low Med High Low Med High
y7 (1+) 5 2.3 2.5 5.3 4.8 4.5 7.3 5.3 5.1 15 15 15
y5 (1+) 2.1 2.5 1.4 2.5 5.1 2.7 3.3 5.7 3 15 15 15
y4 (1+) 2.5 2 1.8 3.5 5.3 3.6 4.3 5.7 4 15 15 15
sum 2.5 1.6 1.3 3 4.8 3.2 3.9 5.1 3.5 15 15 15


Additional Resources and Comments


Assay Details for CPTAC-1398 Collapse assay details

Data source: Panorama

Official Gene Symbol
EZR
Peptide Sequence
IQVWHAEHR
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
172
Peptide End
180
CPTAC ID
CPTAC-1398
Peptide Molecular Mass
1,174.5996
Species
Homo sapiens (Human)
Assay Type
Direct MRM
Matrix
depleted digested plasma
Submitting Laboratory
Broad Institute
Submitting Lab PI
Steven A. Carr

Publication

View Details (opens in a new window)

Large-Scale Interlaboratory Study to Develop, Analytically Validate and Apply Highly Multiplexed, Quantitative Peptide Assays to Measure Cancer-Relevant Proteins in Plasma. Abbatiello SE, Schilling B, Mani DR, Zimmerman LJ, Hall SC, MacLean B, Albertolle M, Allen S, Burgess M, Cusack MP, Gosh M, Hedrick V, Held JM, Inerowicz HD, Jackson A, Keshishian H, Kinsinger CR, Lyssand J, Makowski L, Mesri M, Rodriguez H, Rudnick P, Sadowski P, Sedransk N, Shaddox K, Skates SJ, Kuhn E, Smith D, Whiteaker JR, Whitwell C, Zhang S, Borchers CH, Fisher SJ, Gibson BW, Liebler DC, MacCoss MJ, Neubert TA, Paulovich AG, Regnier FE, Tempst P, Carr SA. Mol Cell Proteomics. 2015 Sep;14(9):2357-74. doi: 10.1074/mcp.M114.047050. Epub 2015 Feb 18. PMID: 25693799


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
Quantiva TSQ
Internal Standard
heavy stable isotope peptide (delta 8-10)
Peptide Standard Purity
>95%
Peptide Standard Label Type
15N
LC
Easy NanoLC1000
Column Packing
Reprosil C18, 1.9um, 200A
Column Dimensions
0.075 x 150 mm
Flow Rate
200 nL/min

Chromatograms

Data source: Panorama


Response Curves

Data source: Panorama

Retrieving Data

Loader

Repeatability

Data source: Panorama

  Average intra-assay CV
(within day CV)
Average inter-assay CV
(between day CV)
Total CV
equation
n=
Fragment ion / Transition Low Med High Low Med High Low Med High Low Med High
y4 (1+) 3.9 2.4 1.3 4.4 5.7 3.2 5.9 6.2 3.5 15 15 15
y7 (2+) 2.4 1.3 1.7 3 5.3 3.5 3.8 5.5 3.9 15 15 15
y8 (2+) 4.1 1.5 2.1 4.8 6.5 3.6 6.3 6.7 4.2 15 15 15
sum 2.2 1.1 1.4 2.4 5.5 3.2 3.3 5.6 3.5 15 15 15


Additional Resources and Comments


Assay Details for CPTAC-1400 Collapse assay details

Data source: Panorama

Official Gene Symbol
EZR
Peptide Sequence
SGYLSSER
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
144
Peptide End
151
CPTAC ID
CPTAC-1400
Peptide Molecular Mass
897.4192
Species
Homo sapiens (Human)
Assay Type
Direct MRM
Matrix
depleted digested plasma
Submitting Laboratory
Broad Institute
Submitting Lab PI
Steven A. Carr

Publication

View Details (opens in a new window)

Large-Scale Interlaboratory Study to Develop, Analytically Validate and Apply Highly Multiplexed, Quantitative Peptide Assays to Measure Cancer-Relevant Proteins in Plasma. Abbatiello SE, Schilling B, Mani DR, Zimmerman LJ, Hall SC, MacLean B, Albertolle M, Allen S, Burgess M, Cusack MP, Gosh M, Hedrick V, Held JM, Inerowicz HD, Jackson A, Keshishian H, Kinsinger CR, Lyssand J, Makowski L, Mesri M, Rodriguez H, Rudnick P, Sadowski P, Sedransk N, Shaddox K, Skates SJ, Kuhn E, Smith D, Whiteaker JR, Whitwell C, Zhang S, Borchers CH, Fisher SJ, Gibson BW, Liebler DC, MacCoss MJ, Neubert TA, Paulovich AG, Regnier FE, Tempst P, Carr SA. Mol Cell Proteomics. 2015 Sep;14(9):2357-74. doi: 10.1074/mcp.M114.047050. Epub 2015 Feb 18. PMID: 25693799


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
Quantiva TSQ
Internal Standard
heavy stable isotope peptide (delta 8-10)
Peptide Standard Purity
>95%
Peptide Standard Label Type
15N
LC
Easy NanoLC1000
Column Packing
Reprosil C18, 1.9um, 200A
Column Dimensions
0.075 x 150 mm
Flow Rate
200 nL/min

Chromatograms

Data source: Panorama


Response Curves

Data source: Panorama

Retrieving Data

Loader

Repeatability

Data source: Panorama

  Average intra-assay CV
(within day CV)
Average inter-assay CV
(between day CV)
Total CV
equation
n=
Fragment ion / Transition Low Med High Low Med High Low Med High Low Med High
y6 (1+) 5.1 2.5 2.2 7.7 6.5 4.3 9.2 7 4.8 15 15 15
y5 (1+) 2.5 2 1.2 4 5.8 2.6 4.7 6.1 2.9 15 15 15
y4 (1+) 3.1 1.9 1 4.2 6.2 2.6 5.2 6.5 2.8 15 15 15
sum 2.1 1.8 0.7 3.9 6 2.5 4.4 6.3 2.6 15 15 15


Additional Resources and Comments


Assay Details for CPTAC-1402 Collapse assay details

Data source: Panorama

Official Gene Symbol
EZR
Peptide Sequence
SQEQLAAELAEYTAK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
413
Peptide End
427
CPTAC ID
CPTAC-1402
Peptide Molecular Mass
1,650.8101
Species
Homo sapiens (Human)
Assay Type
Direct MRM
Matrix
depleted digested plasma
Submitting Laboratory
Broad Institute
Submitting Lab PI
Steven A. Carr

Publication

View Details (opens in a new window)

Large-Scale Interlaboratory Study to Develop, Analytically Validate and Apply Highly Multiplexed, Quantitative Peptide Assays to Measure Cancer-Relevant Proteins in Plasma. Abbatiello SE, Schilling B, Mani DR, Zimmerman LJ, Hall SC, MacLean B, Albertolle M, Allen S, Burgess M, Cusack MP, Gosh M, Hedrick V, Held JM, Inerowicz HD, Jackson A, Keshishian H, Kinsinger CR, Lyssand J, Makowski L, Mesri M, Rodriguez H, Rudnick P, Sadowski P, Sedransk N, Shaddox K, Skates SJ, Kuhn E, Smith D, Whiteaker JR, Whitwell C, Zhang S, Borchers CH, Fisher SJ, Gibson BW, Liebler DC, MacCoss MJ, Neubert TA, Paulovich AG, Regnier FE, Tempst P, Carr SA. Mol Cell Proteomics. 2015 Sep;14(9):2357-74. doi: 10.1074/mcp.M114.047050. Epub 2015 Feb 18. PMID: 25693799


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
Quantiva TSQ
Internal Standard
heavy stable isotope peptide (delta 8-10)
Peptide Standard Purity
>95%
Peptide Standard Label Type
15N
LC
Easy NanoLC1000
Column Packing
Reprosil C18, 1.9um, 200A
Column Dimensions
0.075 x 150 mm
Flow Rate
200 nL/min

Chromatograms

Data source: Panorama


Response Curves

Data source: Panorama

Retrieving Data

Loader

Repeatability

Data source: Panorama

  Average intra-assay CV
(within day CV)
Average inter-assay CV
(between day CV)
Total CV
equation
n=
Fragment ion / Transition Low Med High Low Med High Low Med High Low Med High
y7 (1+) 11.4 4.8 3.9 18.1 7.3 5 21.4 8.7 6.3 15 15 15
y6 (1+) 5.2 3 2.8 13.4 7.9 3.8 14.4 8.5 4.7 15 15 15
y5 (1+) 8.5 2.9 3.3 14.5 7.9 4.5 16.8 8.4 5.6 15 15 15
sum 5.3 1.6 2.4 13.6 7.5 3.7 14.6 7.7 4.4 15 15 15


Additional Resources and Comments


Assay Details for CPTAC-712 Collapse assay details

Data source: Panorama

Official Gene Symbol
EZR
Peptide Sequence
SGYLSSER
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
144
Peptide End
151
CPTAC ID
CPTAC-712
Peptide Molecular Mass
897.4192
Species
Homo sapiens (Human)
Assay Type
Enrichment MRM
Enrichment Method
IMAC
Matrix
plasma
Submitting Laboratory
Fred Hutchinson Cancer Research Center
Submitting Lab PI
Amanda Paulovich

Publication

View Details (opens in a new window)

Anti-peptide monoclonal antibodies generated for immuno-multiple reaction monitoring-mass spectrometry assays have a high probability of supporting Western blot and ELISA. Schoenherr RM, Saul RG, Whiteaker JR, Yan P, Whiteley GR, Paulovich AG. Mol Cell Proteomics. 2015 Feb;14(2):382-98. doi: 10.1074/mcp.O114.043133. Epub 2014 Dec 15. PMID: 25512614


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
5500 Qtrap
Internal Standard
synthetic peptide
Peptide Standard Purity
>95%
Peptide Standard Label Type
15N
LC
Eksigent NanoLC 2D
Column Packing
ReproSil-Pur C18-AQ 3 um
Column Dimensions
100 mm x 75 um ID
Flow Rate
300 nL/min

Chromatograms

Data source: Panorama


Response Curves

Data source: Panorama

Retrieving Data

Loader

Repeatability

Data source: Panorama

  Average intra-assay CV
(within day CV)
Average inter-assay CV
(between day CV)
Total CV
equation
n=
Fragment ion / Transition Low Med High Low Med High Low Med High Low Med High
y3 (1+) 67.5 56.9 19 77.4 49.2 23.3 102.7 75.2 30.1 15 15 15
y4 (1+) 41 11.4 3.9 48.4 11.8 5.2 63.4 16.4 6.5 15 15 15
y5 (1+) 50.9 12.5 2 46.9 15.9 4.6 69.2 20.2 5 15 15 15
sum 51.3 14.2 3.4 52.1 13.3 5.4 73.1 19.5 6.4 15 15 15


Additional Resources and Comments


Assay Details for non-CPTAC-3807 Collapse assay details

Data source: Panorama

Official Gene Symbol
Ezr
Peptide Sequence
ELSEQIEK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
364
Peptide End
371
CPTAC ID
non-CPTAC-3807
Peptide Molecular Mass
974.4920
Species
Mus musculus (Mouse)
Assay Type
Direct MRM
Matrix
Plasma
Submitting Laboratory
UVic-Genome BC Proteomics Centre
Submitting Lab PI
Christoph Borchers

Publication

View Details (opens in a new window)

Molecular phenotyping of laboratory mouse strains using 500 multiple reaction monitoring mass spectrometry plasma assays. Michaud SA, Sinclair NJ, Petrošová H, Palmer AL, Pistawka AJ, Zhang S, Hardie DB, Mohammed Y Eshghi A1, Richard VR, Sickmann A, Borchers CH. Commun Biol. 2018 Jun 27;1:78. doi: 10.1038/s42003-018-0087-6. eCollection 2018.


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
Agilent 6490/6495 QQQ
Internal Standard
synthetic peptide
Peptide Standard Purity
>80%
Peptide Standard Label Type
13C and 15N at C-terminus K
LC
1290 LC (Agilent)
Column Packing
Zorbax Eclipse Plus C18, 1.8 µm
Column Dimensions
2.1 x 150 mm
Flow Rate
400 µL/min

Chromatograms

Data source: Panorama


Response Curves

Data source: Panorama

Retrieving Data

Loader

Repeatability

Data source: Panorama

  Average intra-assay CV
(within day CV)
Average inter-assay CV
(between day CV)
Total CV
equation
n=
Fragment ion / Transition Low Med High Low Med High Low Med High Low Med High
y6 (2+) 16.7 9.8 11.5 19.7 14.2 13 25.8 17.3 17.4 15 15 15
y5 (1+) 20.8 8.6 9 21.7 12.6 9.4 30.1 15.3 13 15 15 15
y4 (1+) 12 10.9 9.6 13.5 10.9 8.5 18.1 15.4 12.8 15 15 15
y2 (1+) 14.8 7.2 6.5 18.5 11.4 8.7 23.7 13.5 10.9 15 15 15
y6 (1+) 9.3 8.9 4.5 10.8 9 6.2 14.3 12.7 7.7 15 15 15
sum 5.1 5.4 3.6 7.9 7.7 6.4 9.4 9.4 7.3 15 15 15


Additional Resources and Comments