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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.

ALDH18A1

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Available Assays

Overview Data source: UniProt

Official Gene Symbol Other Aliases
ALDH18A1 GSAS, P5CS, PYCS
Sequence Length (AA) Molecular Weight (Da)
795 87302
Protein Name
Delta-1-pyrroline-5-carboxylate synthase
Sources
UniProt
PhosphoSitePlus ®
GeneCards 		Human Protein Atlas

Protein Sequence hover to view complete sequence

10 20 30 40 50
MLSQVYRCGF QPFNQHLLPW VKCTTVFRSH CIQPSVIRHV RSWSNIPFIT
60 70 80 90 100
VPLSRTHGKS FAHRSELKHA KRIVVKLGSA VVTRGDECGL ALGRLASIVE
110 120 130 140 150
QVSVLQNQGR EMMLVTSGAV AFGKQRLRHE ILLSQSVRQA LHSGQNQLKE
160 170 180 190 200
MAIPVLEARA CAAAGQSGLM ALYEAMFTQY SICAAQILVT NLDFHDEQKR
210 220 230 240 250
RNLNGTLHEL LRMNIVPIVN TNDAVVPPAE PNSDLQGVNV ISVKDNDSLA
260 270 280 290 300
ARLAVEMKTD LLIVLSDVEG LFDSPPGSDD AKLIDIFYPG DQQSVTFGTK
310 320 330 340 350
SRVGMGGMEA KVKAALWALQ GGTSVVIANG THPKVSGHVI TDIVEGKKVG
360 370 380 390 400
TFFSEVKPAG PTVEQQGEMA RSGGRMLATL EPEQRAEIIH HLADLLTDQR
410 420 430 440 450
DEILLANKKD LEEAEGRLAA PLLKRLSLST SKLNSLAIGL RQIAASSQDS
460 470 480 490 500
VGRVLRRTRI AKNLELEQVT VPIGVLLVIF ESRPDCLPQV AALAIASGNG
510 520 530 540 550
LLLKGGKEAA HSNRILHLLT QEALSIHGVK EAVQLVNTRE EVEDLCRLDK
560 570 580 590 600
MIDLIIPRGS SQLVRDIQKA AKGIPVMGHS EGICHMYVDS EASVDKVTRL
610 620 630 640 650
VRDSKCEYPA ACNALETLLI HRDLLRTPLF DQIIDMLRVE QVKIHAGPKF
660 670 680 690 700
ASYLTFSPSE VKSLRTEYGD LELCIEVVDN VQDAIDHIHK YGSSHTDVIV
710 720 730 740 750
TEDENTAEFF LQHVDSACVF WNASTRFSDG YRFGLGAEVG ISTSRIHARG
760 770 780 790 795
PVGLEGLLTT KWLLRGKDHV VSDFSEHGSL KYLHENLPIP QRNTN

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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All other points link out to UniProt


Phosphorylation Acetylation Ubiquitylation Other

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Assay Details for CPTAC-11 Collapse assay details

Data source: Panorama

Official Gene Symbol
ALDH18A1
Peptide Sequence
GPVGLEGLLTTK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
750
Peptide End
761
CPTAC ID
CPTAC-11
Peptide Molecular Mass
1,183.6812
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

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Repeatability

Data source: Panorama

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  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 (1+) 13 10.8 10.3 25.8 17.4 11.3 28.9 20.5 15.3 15 25 15
y7 (1+) 9 9 10 13.3 9 8.1 16.1 12.7 12.9 15 25 15
y6 (1+) 6.8 10.4 6.9 12.9 10.5 11.4 14.6 14.8 13.3 15 25 15
sum 8.8 8 5.7 15.7 9.3 6.1 18 12.3 8.3 15 25 15

Selectivity

Data source: Panorama

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Slope of Curve Fit for cell line
fragment_ion HCC1187 HCC1419 HCC1954 HCC70 MCF12A MDAMB175VII ZR751 ZR7530
y6 (1+) -0.89 -1.23 -2.44 -4.4 -0.89 -1.04 -1.69 -0.53
y9 (1+) -1.4 -1.32 -3.19 -4.71 -1.5 -1.7 -2.17 -0.77
y7 (1+) -1.16 -1.2 -2.6 -4.52 -0.97 -1.2 -1.91 -0.53
sum -1.17 -1.26 -2.81 -4.54 -1.15 -1.35 -1.96 -0.61

Stability

Data source: Panorama

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Fragment ion / Transition control_intra_CV actual_temp_intra_CV frozen_intra_CV FTx1_intra_CV FTx2_intra_CV
y7 (1+) 10.2 7.6 10 NA 1.9
y9 (1+) 10.4 7.1 8.1 NA 3.2
y6 (1+) 1.5 8 12.9 NA 6
sum 4.2 4 5.3 NA 0.8
Fragment ion / Transition all_intra_CV all_inter_CV
y7 (1+) 7.5 7.5
y9 (1+) 7.2 7.6
y6 (1+) 7.3 8.4
sum 3.7 4.2

Endogenous

Data source: Panorama

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Fragment ion / Transition intra_CV inter_CV total_CV
y7 (1+) 9.1 9.1 12.9
y9 (1+) 10.4 15.3 18.5
y6 (1+) 11 10.6 15.3
sum 8.2 9.2 12.3

Additional Resources and Comments

Resources
Download SOPs
View Peptide in Panorama
View Protein in Panorama
Comments