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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.

MELK

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Available Assays

Overview Data source: UniProt

Official Gene Symbol Other Aliases
MELK KIAA0175
Sequence Length (AA) Molecular Weight (Da)
651 74642
Protein Name
Maternal embryonic leucine zipper kinase
Sources
UniProt
PhosphoSitePlus ®
GeneCards 		Human Protein Atlas

Protein Sequence hover to view complete sequence

10 20 30 40 50
MKDYDELLKY YELHETIGTG GFAKVKLACH ILTGEMVAIK IMDKNTLGSD
60 70 80 90 100
LPRIKTEIEA LKNLRHQHIC QLYHVLETAN KIFMVLEYCP GGELFDYIIS
110 120 130 140 150
QDRLSEEETR VVFRQIVSAV AYVHSQGYAH RDLKPENLLF DEYHKLKLID
160 170 180 190 200
FGLCAKPKGN KDYHLQTCCG SLAYAAPELI QGKSYLGSEA DVWSMGILLY
210 220 230 240 250
VLMCGFLPFD DDNVMALYKK IMRGKYDVPK WLSPSSILLL QQMLQVDPKK
260 270 280 290 300
RISMKNLLNH PWIMQDYNYP VEWQSKNPFI HLDDDCVTEL SVHHRNNRQT
310 320 330 340 350
MEDLISLWQY DHLTATYLLL LAKKARGKPV RLRLSSFSCG QASATPFTDI
360 370 380 390 400
KSNNWSLEDV TASDKNYVAG LIDYDWCEDD LSTGAATPRT SQFTKYWTES
410 420 430 440 450
NGVESKSLTP ALCRTPANKL KNKENVYTPK SAVKNEEYFM FPEPKTPVNK
460 470 480 490 500
NQHKREILTT PNRYTTPSKA RNQCLKETPI KIPVNSTGTD KLMTGVISPE
510 520 530 540 550
RRCRSVELDL NQAHMEETPK RKGAKVFGSL ERGLDKVITV LTRSKRKGSA
560 570 580 590 600
RDGPRRLKLH YNVTTTRLVN PDQLLNEIMS ILPKKHVDFV QKGYTLKCQT
610 620 630 640 650
QSDFGKVTMQ FELEVCQLQK PDVVGIRRQR LKGDAWVYKR LVEDILSSCK
651
V

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-1169 Collapse assay details

Data source: Panorama

Official Gene Symbol
MELK
Peptide Sequence
DLKPENLLFDEYHK
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
132
Peptide End
145
CPTAC ID
CPTAC-1169
Peptide Molecular Mass
1,759.8781
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 K
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-DirectMRM

CPTAC-1168:
FCER1G.
AAITSYEK 		CPTAC-1169:
MELK.
DLKPENLLFDEYHK 		CPTAC-1170:
PEPD.
VPLALFALNR
CPTAC-1171:
PES1.
LAALSASLAR 		CPTAC-1172:
PTPRC.
LFLAEFQSIPR 		CPTAC-1173:
SYK.
NYLGGFALSVAHGR
CPTAC-1174:
SYK.
LIATTAHEK 		CPTAC-1175:
ANKRD27.
LYDLPDEPFTR 		CPTAC-1176:
ASGR2.
ADHDALLFHLK
CPTAC-1177:
C3AR1.
STHC[+57.0]PSNNVISER 		CPTAC-1178:
CD79A.
SHGGIYVC[+57.0]R 		CPTAC-1179:
CEACAM1.
TIIVTELSPVVAKPQIK
CPTAC-1180:
COL3A1.
GPVGPSGPPGK 		CPTAC-1181:
CYBB.
LLGSALALAR 		CPTAC-1182:
EVI2B.
STLLADDLEIK
CPTAC-1183:
FCGR2B.
VTFFQNGK 		CPTAC-1184:
GPR20.
YLAIVRPEGSR 		CPTAC-1185:
SIX6.
AIVAFHGGNYR
CPTAC-1186:
THBS2.
GTLLALEGPGLSQR 		CPTAC-1187:
TOP2A.
TLAVSGLGVVGR 		CPTAC-1188:
TSPAN14.
TLISDIEAVK
CPTAC-1189:
TLE1.
FTIPESLDR 		CPTAC-1190:
SLC7A9.
LGSYVQNIFTAAK 		CPTAC-1191:
SLC7A9.
VLSYISVR
CPTAC-1192:
PEPD.
FEVNNTILHPEIVEC[+57.0]R 		CPTAC-1193:
PES1.
FLLHEPIVNK 		CPTAC-1194:
TARS.
AELNPWPEYIYTR
CPTAC-1195:
TARS.
GFQEVVTPNIFNSR 		CPTAC-1196:
STARD3NL.
VLILAYAVC[+57.0]R 		CPTAC-1197:
STARD3NL.
LLIVQDASER
CPTAC-1198:
ANKRD27.
LNDPSVVTPFSR 		CPTAC-1199:
CD48.
LQVLDPVPKPVIK 		CPTAC-1200:
CDK1.
LESEEEGVPSTAIR
CPTAC-1201:
COL11A1.
GFDGLPGLPGDK 		CPTAC-1202:
COL11A1.
GEVGQIGPR 		CPTAC-1203:
CYBB.
IGVFLC[+57.0]GPEALAETLSK
CPTAC-1204:
DLGAP5.
DVNIPTLEGR 		CPTAC-1205:
DLGAP5.
IAQPHHGVPYFR 		CPTAC-1206:
ETS1.
YENDYPSVILR
CPTAC-1207:
EVI2B.
STPGFILDTTSNK 		CPTAC-1208:
LYL1.
DQAAALAAGPTPPGPR 		CPTAC-1209:
LYL1.
SQPAPPADPDGSPGGAARPIK
CPTAC-1210:
MCM10.
GTNLIIQETR 		CPTAC-1211:
MCM10.
IGGETLLPR 		CPTAC-1212:
OSGIN1.
AVDDPGLVFNQLPK
CPTAC-1213:
PIK3CD.
GELLNPTGTVR 		CPTAC-1214:
SFTPA1.
NPEENEAIASFVK 		CPTAC-1215:
ZNF507.
TKPDPLIHVIQK
CPTAC-1216:
ZNF592.
AAPLIVEVFNK 		CPTAC-1217:
ANXA11.
TPVLFDIYEIK 		CPTAC-1218:
ANXA11.
DAQELYAAGENR

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
y5 (1+) 30.4 16.5 12.9 34.3 17.2 15.1 45.8 23.8 19.9 15 15 15
y6 (1+) 10.7 12.2 8.4 10.9 13.2 8.9 15.3 18 12.2 15 15 15
y7 (1+) 27 13.6 10.5 25.5 15.4 12.1 37.1 20.5 16 15 15 15
sum 4.4 6.6 7.9 7.2 7.8 9.2 8.4 10.2 12.1 15 15 15

Additional Resources and Comments

Resources
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View Peptide in Panorama
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Assay Details for CPTAC-2888 Collapse assay details

Data source: Panorama

Official Gene Symbol
MELK
Peptide Sequence
LHYNVTTTR
Modification Type
unmodified
Protein - Site of Modification
N/A
Peptide - Site of Modification
N/A
Peptide Start
559
Peptide End
567
CPTAC ID
CPTAC-2888
Peptide Molecular Mass
1,103.5724
Species
Homo Sapiens
Assay Type
Direct MRM or SRM
Matrix
Tumor Digest
Submitting Laboratory
Washington University in St. Louis
Submitting Lab PI
Reid Townsend

Assay Parameters Collapse assay parameters

Data source: Panorama

Instrument
ThermoFisher, Q-Exactive
Internal Standard
25 fmol on column
Peptide Standard Purity
>95%
Peptide Standard Label Type
13C and 15N at C-terminus R
LC
Easy-nLC 1000 Thermo Scientific
Column Packing
C18
Column Dimensions
75 µm x 50 cm
Flow Rate
300 nL/min

Assay Multiplexing Expand assay panel

Pacific Northwest National Laboratory-DirectMRM

CPTAC-1168:
FCER1G.
AAITSYEK 		CPTAC-1169:
MELK.
DLKPENLLFDEYHK 		CPTAC-1170:
PEPD.
VPLALFALNR
CPTAC-1171:
PES1.
LAALSASLAR 		CPTAC-1172:
PTPRC.
LFLAEFQSIPR 		CPTAC-1173:
SYK.
NYLGGFALSVAHGR
CPTAC-1174:
SYK.
LIATTAHEK 		CPTAC-1175:
ANKRD27.
LYDLPDEPFTR 		CPTAC-1176:
ASGR2.
ADHDALLFHLK
CPTAC-1177:
C3AR1.
STHC[+57.0]PSNNVISER 		CPTAC-1178:
CD79A.
SHGGIYVC[+57.0]R 		CPTAC-1179:
CEACAM1.
TIIVTELSPVVAKPQIK
CPTAC-1180:
COL3A1.
GPVGPSGPPGK 		CPTAC-1181:
CYBB.
LLGSALALAR 		CPTAC-1182:
EVI2B.
STLLADDLEIK
CPTAC-1183:
FCGR2B.
VTFFQNGK 		CPTAC-1184:
GPR20.
YLAIVRPEGSR 		CPTAC-1185:
SIX6.
AIVAFHGGNYR
CPTAC-1186:
THBS2.
GTLLALEGPGLSQR 		CPTAC-1187:
TOP2A.
TLAVSGLGVVGR 		CPTAC-1188:
TSPAN14.
TLISDIEAVK
CPTAC-1189:
TLE1.
FTIPESLDR 		CPTAC-1190:
SLC7A9.
LGSYVQNIFTAAK 		CPTAC-1191:
SLC7A9.
VLSYISVR
CPTAC-1192:
PEPD.
FEVNNTILHPEIVEC[+57.0]R 		CPTAC-1193:
PES1.
FLLHEPIVNK 		CPTAC-1194:
TARS.
AELNPWPEYIYTR
CPTAC-1195:
TARS.
GFQEVVTPNIFNSR 		CPTAC-1196:
STARD3NL.
VLILAYAVC[+57.0]R 		CPTAC-1197:
STARD3NL.
LLIVQDASER
CPTAC-1198:
ANKRD27.
LNDPSVVTPFSR 		CPTAC-1199:
CD48.
LQVLDPVPKPVIK 		CPTAC-1200:
CDK1.
LESEEEGVPSTAIR
CPTAC-1201:
COL11A1.
GFDGLPGLPGDK 		CPTAC-1202:
COL11A1.
GEVGQIGPR 		CPTAC-1203:
CYBB.
IGVFLC[+57.0]GPEALAETLSK
CPTAC-1204:
DLGAP5.
DVNIPTLEGR 		CPTAC-1205:
DLGAP5.
IAQPHHGVPYFR 		CPTAC-1206:
ETS1.
YENDYPSVILR
CPTAC-1207:
EVI2B.
STPGFILDTTSNK 		CPTAC-1208:
LYL1.
DQAAALAAGPTPPGPR 		CPTAC-1209:
LYL1.
SQPAPPADPDGSPGGAARPIK
CPTAC-1210:
MCM10.
GTNLIIQETR 		CPTAC-1211:
MCM10.
IGGETLLPR 		CPTAC-1212:
OSGIN1.
AVDDPGLVFNQLPK
CPTAC-1213:
PIK3CD.
GELLNPTGTVR 		CPTAC-1214:
SFTPA1.
NPEENEAIASFVK 		CPTAC-1215:
ZNF507.
TKPDPLIHVIQK
CPTAC-1216:
ZNF592.
AAPLIVEVFNK 		CPTAC-1217:
ANXA11.
TPVLFDIYEIK 		CPTAC-1218:
ANXA11.
DAQELYAAGENR

Chromatograms

Data source: Panorama

view larger image
view larger image
view larger image

Response Curves

Data source: Panorama

view larger image
view larger image
view larger image

Retrieving Data

Loader

Repeatability

Data source: Panorama

view larger image
  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
b3 (1+) 9.7 5.5 6.7 8.9 7.3 7.8 13.2 9.1 10.3 15 15 15
y7 (1+) 6.4 3.6 4.1 6.6 5.8 6.3 9.2 6.8 7.5 15 15 15
y6 (1+) 8.3 4.6 6 9.2 6.7 7.2 12.4 8.1 9.4 15 15 15
sum 6.8 3.9 4.8 7.1 6 6.5 9.8 7.2 8.1 15 15 15

Additional Resources and Comments

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