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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
MARCKS MACS, PRKCSL
Sequence Length (AA) Molecular Weight (Da)
332 31555
Protein Name
Myristoylated alanine-rich C-kinase substrate
Sources
UniProt
PhosphoSitePlus ®
GeneCards
Human Protein Atlas

Protein Sequence hover to view complete sequence

10 20 30 40 50
MGAQFSKTAA KGEAAAERPG EAAVASSPSK ANGQENGHVK VNGDASPAAA
60 70 80 90 100
ESGAKEELQA NGSAPAADKE EPAAAGSGAA SPSAAEKGEP AAAAAPEAGA
110 120 130 140 150
SPVEKEAPAE GEAAEPGSPT AAEGEAASAA SSTSSPKAED GATPSPSNET
160 170 180 190 200
PKKKKKRFSF KKSFKLSGFS FKKNKKEAGE GGEAEAPAAE GGKDEAAGGA
210 220 230 240 250
AAAAAEAGAA SGEQAAAPGE EAAAGEEGAA GGDPQEAKPQ EAAVAPEKPP
260 270 280 290 300
ASDETKAAEE PSKVEEKKAE EAGASAAACE APSAAGPGAP PEQEAAPAEE
310 320 330 332
PAAAAASSAC AAPSQEAQPE CSPEAPPAEA AE

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-976 Collapse assay details

Data source: Panorama

Official Gene Symbol
MARCKS
Peptide Modified Sequence
GEPAAAAAPEAGAS[+80.0]PVEK
Modification Type
Phospho (ST)
Protein - Site of Modification
101
Peptide - Site of Modification
14
Peptide Start
88
Peptide End
105
CPTAC ID
CPTAC-976
Peptide Molecular Mass
1,701.7611
Species
Homo sapiens (Human)
Assay Type
Enrichment MRM
Enrichment Method
IMAC
Matrix
cell lysate
Submitting Laboratory
Fred Hutchinson Cancer Research Center
Submitting Lab PI
Amanda Paulovich

Publication

View Details (opens in a new window)

Kennedy JJ, Yan P, Zhao L, Ivey RG, Voytovich U, Moore HD, Lin C, Pogosova-Agadjanyan EL, Stirewalt DL, Reding KW, Whiteaker JR, Paulovich AG. Immobilized metal affinity chromatography coupled to multiple reaction monitoring enables reproducible quantification of phospho-signaling. Molecular and Cellular Proteomics. mcp.O115.054940


Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
QTrap 5500 (Sciex)
Internal Standard
synthetic peptide
Peptide Standard Purity
Crude
Peptide Standard Label Type
13C and 15N at C-terminus K
LC
nanoLC-2D (Eksigent)
Column Packing
ChromXP C18-CL, 3 µm, 120 Å
Column Dimensions
75 µm x 15cm
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
y16 (2+) 28 10.7 11.3 17.3 10.6 12.6 32.9 15.1 16.9 15 24 15
y10 (1+) 22.7 11.8 11.5 22.9 13.6 15.5 32.2 18 19.3 15 24 15
y11 (1+) 29.8 9.7 14.9 39.8 13.5 18 49.7 16.6 23.4 15 24 15
sum 22.9 10.5 11.2 22.3 11.9 14.2 32 15.9 18.1 15 24 15


Additional Resources and Comments


Assay Details for non-CPTAC-4045 Collapse assay details

Data source: Panorama

Official Gene Symbol
Marcks
Peptide Sequence
EEPASGSAATPAAAEK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
70
Peptide End
85
CPTAC ID
non-CPTAC-4045
Peptide Molecular Mass
1,485.6947
Species
Mus musculus (Mouse)
Assay Type
Direct MRM
Matrix
Plasma
Submitting Laboratory
UVic-Genome BC Proteomics Centre
Submitting Lab PI
Christoph Borchers

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
y14 (2+) 6.8 4.4 4 10.8 7.2 6.5 12.8 8.4 7.6 15 15 15
y6 (1+) 18.5 10.5 9.2 18.7 13.9 15.3 26.3 17.4 17.9 15 15 15
y8 (1+) 41.6 13 14.7 46.8 14.6 15.8 62.6 19.5 21.6 15 15 15
y11 (1+) 13.5 10.1 10 14.5 9.7 9.6 19.8 14 13.9 15 15 15
y12 (1+) 31.2 7.3 4.5 31.6 11.7 10.3 44.4 13.8 11.2 15 15 15
sum 5.5 4 2.8 9.8 6.3 6.3 11.2 7.5 6.9 15 15 15


Additional Resources and Comments