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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
XPNPEP1 XPNPEPL, XPNPEPL1
Sequence Length (AA) Molecular Weight (Da)
623 69918
Protein Name
Xaa-Pro aminopeptidase 1
Sources
UniProt
PhosphoSitePlus ®
GeneCards
Human Protein Atlas

Protein Sequence hover to view complete sequence

10 20 30 40 50
MPPKVTSELL RQLRQAMRNS EYVTEPIQAY IIPSGDAHQS EYIAPCDCRR
60 70 80 90 100
AFVSGFDGSA GTAIITEEHA AMWTDGRYFL QAAKQMDSNW TLMKMGLKDT
110 120 130 140 150
PTQEDWLVSV LPEGSRVGVD PLIIPTDYWK KMAKVLRSAG HHLIPVKENL
160 170 180 190 200
VDKIWTDRPE RPCKPLLTLG LDYTGISWKD KVADLRLKMA ERNVMWFVVT
210 220 230 240 250
ALDEIAWLFN LRGSDVEHNP VFFSYAIIGL ETIMLFIDGD RIDAPSVKEH
260 270 280 290 300
LLLDLGLEAE YRIQVHPYKS ILSELKALCA DLSPREKVWV SDKASYAVSE
310 320 330 340 350
TIPKDHRCCM PYTPICIAKA VKNSAESEGM RRAHIKDAVA LCELFNWLEK
360 370 380 390 400
EVPKGGVTEI SAADKAEEFR RQQADFVDLS FPTISSTGPN GAIIHYAPVP
410 420 430 440 450
ETNRTLSLDE VYLIDSGAQY KDGTTDVTRT MHFGTPTAYE KECFTYVLKG
460 470 480 490 500
HIAVSAAVFP TGTKGHLLDS FARSALWDSG LDYLHGTGHG VGSFLNVHEG
510 520 530 540 550
PCGISYKTFS DEPLEAGMIV TDEPGYYEDG AFGIRIENVV LVVPVKTKYN
560 570 580 590 600
FNNRGSLTFE PLTLVPIQTK MIDVDSLTDK ECDWLNNYHL TCRDVIGKEL
610 620 623
QKQGRQEALE WLIRETQPIS KQH

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-694 Collapse assay details

Data source: Panorama

Official Gene Symbol
XPNPEP1
Peptide Sequence
GSLTFEPLTLVPIQTK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
555
Peptide End
570
CPTAC ID
CPTAC-694
Peptide Molecular Mass
1,742.9818
Species
Homo sapiens (Human)
Assay Type
Enrichment ImmunoMRM
Enrichment Method
peptide immunoaffinity
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
13C and 15N at C-terminus K
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

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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 (1+) 16.3 5.7 5.6 31.1 23.8 23 35.1 24.5 23.7 15 15 15
y6 (1+) 10.1 7.8 6.8 37.2 22.2 21.9 38.5 23.5 22.9 15 15 15
y10 (1+) 17.3 6.9 8.2 31.8 20.9 21.1 36.2 22 22.6 15 15 15
sum 13.7 5.3 5.5 30.9 22.2 22 33.8 22.8 22.7 15 15 15


Additional Resources and Comments


Assay Details for CPTAC-695 Collapse assay details

Data source: Panorama

Official Gene Symbol
XPNPEP1
Peptide Sequence
TLSLDEVYLIDSGAQYK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
405
Peptide End
421
CPTAC ID
CPTAC-695
Peptide Molecular Mass
1,913.9622
Species
Homo sapiens (Human)
Assay Type
Enrichment ImmunoMRM
Enrichment Method
peptide immunoaffinity
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
13C and 15N at C-terminus K
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
y7 (1+) 34.2 18 14.6 37.5 27.1 29.5 50.8 32.5 32.9 15 15 15
y8 (1+) 34.5 23.2 18.9 50.8 27.6 27.9 61.4 36.1 33.7 15 15 15
y10 (1+) 46.3 15.4 10.3 32.5 30.6 28.1 56.6 34.3 29.9 15 15 15
sum 30.1 12.5 8.2 34.2 24.7 26.2 45.6 27.7 27.5 15 15 15


Additional Resources and Comments