Show Nav →
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
Chga N/A
Sequence Length (AA) Molecular Weight (Da)
463 51789
Protein Name
Chromogranin-A
Sources
UniProt
PhosphoSitePlus ®
GeneCards
Human Protein Atlas

Protein Sequence hover to view complete sequence

10 20 30 40 50
MRSTAVLALL LCAGQVFALP VNSPMTKGDT KVMKCVLEVI SDSLSKPSPM
60 70 80 90 100
PVSPECLETL QGDERILSIL RHQNLLKELQ DLALQGAKER AQQPLKQQQP
110 120 130 140 150
PKQQQQQQQQ QQQEQQHSSF EDELSEVFEN QSPDAKHRDA AAEVPSRDTM
160 170 180 190 200
EKRKDSDKGQ QDGFEATTEG PRPQAFPEPN QESPMMGDSE SPGEDTATNT
210 220 230 240 250
QSPTSLPSQE HVDPQATGDS ERGLSAQQQA RKAKQEEKEE EEEEEAVARE
260 270 280 290 300
KAGPEEVPTA ASSSHFHAGY KAIQKDDGQS DSQAVDGDGK TEASEALPSE
310 320 330 340 350
GKGELEHSQQ EEDGEEAMVG TPQGLFPQGG KGRELEHKQE EEEEEEERLS
360 370 380 390 400
REWEDKRWSR MDQLAKELTA EKRLEGEDDP DRSMKLSFRT RAYGFRDPGP
410 420 430 440 450
QLRRGWRPSS REDSVEARSD FEEKKEEEGS ANRRAEDQEL ESLSAIEAEL
460 463
EKVAHQLQAL RRG

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

loading

Loader

Assay Details for non-CPTAC-3903 Collapse assay details

Data source: Panorama

Official Gene Symbol
Chga
Peptide Sequence
ELQDLALQGAK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
78
Peptide End
88
CPTAC ID
non-CPTAC-3903
Peptide Molecular Mass
1,184.6401
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
y9 (2+) 20.2 11.7 6.9 25.9 10.3 9 32.8 15.6 11.3 15 15 15
y3 (1+) 11.4 6 4.2 40 9.8 7.4 41.6 11.5 8.5 15 15 15
y5 (1+) 13.9 5 4.5 17 5.5 6.7 22 7.4 8.1 15 15 15
y6 (1+) 12 5.2 2.8 20.2 8.3 5.1 23.5 9.8 5.8 15 15 15
y8 (1+) 7.7 4.3 2.6 12.3 7.3 6.1 14.5 8.5 6.6 15 15 15
sum 5.9 4.2 1.7 17.6 6.6 5.1 18.6 7.8 5.4 15 15 15


Additional Resources and Comments