PPP2R4, CPTAC-259 - CPTAC Assay Portal | Office of Cancer Clinical Proteomics Research

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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
PPP2R4	PTPA

Sequence Length (AA)	Molecular Weight (Da)
358	40668

Protein Name
Serine/threonine-protein phosphatase 2A activator

Sources
UniProt PhosphoSitePlus ® GeneCards	Human Protein Atlas

Protein Sequence hover to view complete sequence

10	20	30	40	50
MAEGERQPPP	DSSEEAPPAT	QNFIIPKKEI	HTVPDMGKWK	RSQAYADYIG
60	70	80	90	100
FILTLNEGVK	GKKLTFEYRV	SEMWNEVHEE	KEQAAKQSVS	CDECIPLPRA
110	120	130	140	150
GHCAPSEAIE	KLVALLNTLD	RWIDETPPVD	QPSRFGNKAY	RTWYAKLDEE
160	170	180	190	200
AENLVATVVP	THLAAAVPEV	AVYLKESVGN	STRIDYGTGH	EAAFAAFLCC
210	220	230	240	250
LCKIGVLRVD	DQIAIVFKVF	NRYLEVMRKL	QKTYRMEPAG	SQGVWGLDDF
260	270	280	290	300
QFLPFIWGSS	QLIDHPYLEP	RHFVDEKAVN	ENHKDYMFLE	CILFITEMKT
310	320	330	340	350
GPFAEHSNQL	WNISAVPSWS	KVNQGLIRMY	KAECLEKFPV	IQHFKFGSLL
358
PIHPVTSG

Data source: UniProt

Protein Map Collapse protein map

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

Uniprot Database Entry PhosphoSitePlus ®

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Assay Details for CPTAC-259 Collapse assay details

Data source: Panorama

Official Gene Symbol: PPP2R4
Peptide Sequence: LVALLNTLDR
Modification Type: unmodified
Protein - Site of Modification: N/A
Peptide - Site of Modification: N/A
Peptide Start: 112
Peptide End: 121

CPTAC ID: CPTAC-259
Peptide Molecular Mass: 1,126.6710
Species: Homo sapiens (Human)
Assay Type: Direct MRM
Matrix: cell line lysate pool
Submitting Laboratory: Fred Hutchinson Cancer Research Center
Submitting Lab PI: Amanda Paulovich

Publication

View Details (opens in a new window)

Demonstrating the feasibility of large-scale development of standardized assays to quantify human proteins. Kennedy JJ, Abbatiello SE, Kim K, Yan P, Whiteaker JR, Lin C, Kim JS, Zhang Y, Wang X, Ivey RG, Zhao L, Min H, Lee Y, Yu MH, Yang EG, Lee C, Wang P, Rodriguez H, Kim Y, Carr SA, Paulovich AG. Nat Methods. 2014 Feb;11(2):149-55. doi: 10.1038/nmeth.2763. Epub 2013 Dec 8. PMID: 24317253

Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument: 5500 QTRAP (ABSCIEX)
Internal Standard: peptide
Peptide Standard Purity: >95%
Peptide Standard Label Type: 13C,15N

LC: nanoLC-Ultra 2D, cHiPLC-nanoflex (Eksigent)
Column Packing: ChromXP C18-CL, 3 um, 120A
Column Dimensions: 150 x 0.075 mm
Flow Rate: 500 nL / min

Chromatograms

Data source: Panorama

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Response Curves

Data source: Panorama

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Retrieving Data

Repeatability

Data source: Panorama

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	Average intra-assay CV (within day CV)			Average inter-assay CV (between day CV)			Total CV			n=
Fragment ion / Transition	Low	Med	High	Low	Med	High	Low	Med	High	Low	Med	High
y8 (1+)	7.1	5.1	5.1	7.7	8.7	5.5	10.5	10.1	7.5	15	25	15
y6 (1+)	8.2	4.5	4.4	10.8	7.3	5.4	13.6	8.6	7	15	25	15
y5 (1+)	5.6	5	4.7	9.4	6.4	5.9	10.9	8.1	7.5	15	25	15
sum	6	4.1	4.3	8.4	7.4	5.2	10.3	8.5	6.7	15	25	15

Additional Resources and Comments

Resources

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View Peptide in Panorama

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