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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
STAT1 N/A
Sequence Length (AA) Molecular Weight (Da)
750 87335
Protein Name
Signal transducer and activator of transcription 1-alpha/beta
Sources
UniProt
PhosphoSitePlus ®
GeneCards
Human Protein Atlas

Protein Sequence hover to view complete sequence

10 20 30 40 50
MSQWYELQQL DSKFLEQVHQ LYDDSFPMEI RQYLAQWLEK QDWEHAANDV
60 70 80 90 100
SFATIRFHDL LSQLDDQYSR FSLENNFLLQ HNIRKSKRNL QDNFQEDPIQ
110 120 130 140 150
MSMIIYSCLK EERKILENAQ RFNQAQSGNI QSTVMLDKQK ELDSKVRNVK
160 170 180 190 200
DKVMCIEHEI KSLEDLQDEY DFKCKTLQNR EHETNGVAKS DQKQEQLLLK
210 220 230 240 250
KMYLMLDNKR KEVVHKIIEL LNVTELTQNA LINDELVEWK RRQQSACIGG
260 270 280 290 300
PPNACLDQLQ NWFTIVAESL QQVRQQLKKL EELEQKYTYE HDPITKNKQV
310 320 330 340 350
LWDRTFSLFQ QLIQSSFVVE RQPCMPTHPQ RPLVLKTGVQ FTVKLRLLVK
360 370 380 390 400
LQELNYNLKV KVLFDKDVNE RNTVKGFRKF NILGTHTKVM NMEESTNGSL
410 420 430 440 450
AAEFRHLQLK EQKNAGTRTN EGPLIVTEEL HSLSFETQLC QPGLVIDLET
460 470 480 490 500
TSLPVVVISN VSQLPSGWAS ILWYNMLVAE PRNLSFFLTP PCARWAQLSE
510 520 530 540 550
VLSWQFSSVT KRGLNVDQLN MLGEKLLGPN ASPDGLIPWT RFCKENINDK
560 570 580 590 600
NFPFWLWIES ILELIKKHLL PLWNDGCIMG FISKERERAL LKDQQPGTFL
610 620 630 640 650
LRFSESSREG AITFTWVERS QNGGEPDFHA VEPYTKKELS AVTFPDIIRN
660 670 680 690 700
YKVMAAENIP ENPLKYLYPN IDKDHAFGKY YSRPKEAPEP MELDGPKGTG
710 720 730 740 750
YIKTELISVS EVHPSRLQTT DNLLPMSPEE FDEVSRIVGS VEFDSMMNTV

Data source: UniProt


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

Uniprot Database Entry PhosphoSitePlus ®

Click a point on a node
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-5964 Collapse assay details

Data source: Panorama

Official Gene Symbol
STAT1
Peptide Sequence
YTYEHDPITK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
4
Peptide Start
287
Peptide End
296
CPTAC ID
CPTAC-5964
Peptide Molecular Mass
1,265.5928
Species
Homo sapiens (Human)
Assay Type
Enrichment MRM or SRM
Enrichment Method
Titanium Dioxide
Matrix
FFPE tumor tissue lysate pool
Submitting Laboratory
Fred Hutchinson Cancer Research Center
Submitting Lab PI
Amanda Paulovich

Publication

View Details (opens in a new window)

Targeted Mass Spectrometry Enables Multiplexed Quantification of Immunomodulatory Proteins in Clinical Biospecimens.Whiteaker JR, Lundeen RA, Zhao L, Schoenherr RM, Burian A, Huang D, Voytovich U, Wang T, Kennedy JJ, Ivey RG, Lin C, Murillo OD, Lorentzen TD, Thiagarajan M, Colantonio S, Caceres TW, Roberts RR, Knotts JG, Reading JJ, Kaczmarczyk JA, Richardson CW, Garcia-Buntley SS, Bocik W, Hewitt SM, Murray KE, Do N, Brophy M, Wilz SW, Yu H, Ajjarapu S, Boja E, Hiltke T, Rodriguez H, Paulovich AG.Front Immunol. 2021 Nov 11;12:765898. doi: 10.3389/fimmu.2021.765898. eCollection 2021.PMID: 34858420


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
QTRAP 5500
Internal Standard
peptide
Peptide Standard Purity
>95%
Peptide Standard Label Type
13C and 15N at C-terminus K
LC
Eksigent nanoLC 425
Column Packing
3 µm ChromXP C18EP, 120 Å
Column Dimensions
150 x 0.3 mm
Flow Rate
0.3 µL/min

Assay Multiplexing Expand assay panel

Pacific Northwest National Laboratory-TiO2SRM


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 (1+) 8.1 9.1 7.5 15.1 9.1 7.5 17.1 12.9 10.6 13 25 14
y4 (1+) 12.5 7.1 5.9 13.8 6.9 9.9 18.6 9.9 11.5 13 25 14
y8 (2+) 9.4 4.9 6.1 9.4 6.6 9.6 13.3 8.2 11.4 13 25 14
y6 (2+) 19.1 13.6 4.3 19.2 14.6 9.6 27.1 20 10.5 13 25 14
b4 (1+) 25.1 12.6 7.1 43.8 18.8 21.1 50.5 22.6 22.3 13 25 14
y6 (1+) 13 10.4 8.2 13.2 10.3 12.8 18.5 14.6 15.2 13 25 14
sum 8.6 4.4 4 10.4 6.1 8.8 13.5 7.5 9.7 13 25 14


Additional Resources and Comments


Assay Details for CPTAC-1272 Collapse assay details

Data source: Panorama

Official Gene Symbol
STAT1
Peptide Modified Sequence
NLSFFLTPPC[+57.0]AR
Modification Type
Carbamidomethyl (C)
Protein - Site of Modification
492
Peptide - Site of Modification
10
Peptide Start
483
Peptide End
494
CPTAC ID
CPTAC-1272
Peptide Molecular Mass
1,421.7126
Species
Homo sapiens (Human)
Assay Type
Direct MRM or SRM
Matrix
Ovarian cancer tumor tissue lysate
Submitting Laboratory
Pacific Northwest National Laboratory
Submitting Lab PI
Tao Liu

Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
TSQ Vantage
Internal Standard
peptide
Peptide Standard Purity
>95%
Peptide Standard Label Type
13C and 15N at C-terminus R
LC
Waters nanoACQUITY (Part Number 176016000)
Column Packing
Waters BEH C18, 1.7 um 130 Å (Part Number 186007485)
Column Dimensions
100 um x 100 mm
Flow Rate
0.5 uL/min

Assay Multiplexing Expand assay panel

Pacific Northwest National Laboratory-TiO2SRM


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 (1+) 3.9 9.8 12.4 15.8 9.5 13.3 16.3 13.6 18.2 15 15 15
y8 (1+) 10.1 10.7 12.8 22.1 10.3 13.3 24.3 14.9 18.5 15 15 15
y9 (1+) 12.4 10.4 15.6 19.4 10.4 14.8 23 14.7 21.5 15 15 15
sum 3.7 9.9 12.7 16.5 9.5 13.2 16.9 13.7 18.3 15 15 15


Additional Resources and Comments


Assay Details for CPTAC-1746 Collapse assay details

Data source: Panorama

Official Gene Symbol
STAT1
Peptide Modified Sequence
TELIS[+80.0]VSEVHPSR
Modification Type
Phospho (ST)
Protein - Site of Modification
708
Peptide - Site of Modification
5
Peptide Start
704
Peptide End
716
CPTAC ID
CPTAC-1746
Peptide Molecular Mass
1,532.7236
Species
Homo sapiens (Human)
Assay Type
Enrichment MRM or SRM
Enrichment Method
Titanium Dioxide
Matrix
Ovarian cancer cell lysate
Submitting Laboratory
Pacific Northwest National Laboratory
Submitting Lab PI
Tao Liu

Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
TSQ Vantage
Internal Standard
peptide
Peptide Standard Purity
>95%
Peptide Standard Label Type
13C and 15N at C-terminus R
LC
Waters nanoACQUITY (Part Number 176016000)
Column Packing
Waters BEH C18, 1.7 um 130 Å (Part Number 186007485)
Column Dimensions
100 um x 100 mm
Flow Rate
0.5 uL/min

Assay Multiplexing Expand assay panel

Pacific Northwest National Laboratory-TiO2SRM


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+) 14.2 3.1 5.1 10.3 5.1 4 17.5 6 6.5 15 15 15
y4 (1+) 20.2 6.1 8 21 9.5 9.2 29.1 11.3 12.2 15 15 15
y7 (1+) 12.4 4.7 8.4 11.4 7.7 10.6 16.8 9 13.5 15 15 15
sum 8 2.1 3.4 7.3 5.5 3.3 10.8 5.9 4.7 15 15 15


Additional Resources and Comments