Summary for PALB2 (NES ID: 276)
Full Name
Partner and localizer of BRCA2 UniProt
Alternative Names
FANCN
Organism
Homo sapiens (Human)
Experimental Evidence for CRM1-mediated Export
LMB Sensitive, Binds CRM1 Ref.1Cancer-causing mutations in the tumor suppressor PALB2 reveal a novel cancer mechanism using a hidden nuclear export signal in the WD40 repeat motif, Pauty et al., Nucleic Acids Res, 2017
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
V932A/L936A/L939A/I941A, 928VYNLVCVALGNLEIREIR945 by Deletion Ref.1Cancer-causing mutations in the tumor suppressor PALB2 reveal a novel cancer mechanism using a hidden nuclear export signal in the WD40 repeat motif, Pauty et al., Nucleic Acids Res, 2017 Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
928VYNLVCVALGNLEIREIR945 Ref.1Cancer-causing mutations in the tumor suppressor PALB2 reveal a novel cancer mechanism using a hidden nuclear export signal in the WD40 repeat motif, Pauty et al., Nucleic Acids Res, 2017 Secondary Structure of Export Signal
beta-strand
Other Residues Important for Export
Unknown
Sequence
Show FASTA Format
Show Domain Info by CDD
Show Secondary Structure by PSIPRED
Show Conservation Score by AL2CO
10 20 30 40 50 60MDEPPGKPLS CEEKEKLKEK LAFLKREYSK TLARLQRAQR AEKIKHSIKK TVEEQDCLSQ70 80 90 100 110 120QDLSPQLKHS EPKNKICVYD KLHIKTHLDE ETGEKTSITL DVGPESFNPG DGPGGLPIQR130 140 150 160 170 180TDDTQEHFPH RVSDPSGEQK QKLPSRRKKQ QKRTFISQER DCVFGTDSLR LSGKRLKEQE190 200 210 220 230 240EISSKNPARS PVTEIRTHLL SLKSELPDSP EPVTEINEDS VLIPPTAQPE KGVDTFLRRP250 260 270 280 290 300NFTRATTVPL QTLSDSGSSQ HLEHIPPKGS SELTTHDLKN IRFTSPVSLE AQGKKMTVST310 320 330 340 350 360DNLLVNKAIS KSGQLPTSSN LEANISCSLN ELTYNNLPAN ENQNLKEQNQ TEKSLKSPSD370 380 390 400 410 420TLDGRNENLQ ESEILSQPKS LSLEATSPLS AEKHSCTVPE GLLFPAEYYV RTTRSMSNCQ430 440 450 460 470 480RKVAVEAVIQ SHLDVKKKGF KNKNKDASKN LNLSNEETDQ SEIRMSGTCT GQPSSRTSQK490 500 510 520 530 540LLSLTKVSSP AGPTEDNDLS RKAVAQAPGR RYTGKRKSAC TPASDHCEPL LPTSSLSIVN550 560 570 580 590 600RSKEEVTSHK YQHEKLFIQV KGKKSRHQKE DSLSWSNSAY LSLDDDAFTA PFHRDGMLSL610 620 630 640 650 660KQLLSFLSIT DFQLPDEDFG PLKLEKVKSC SEKPVEPFES KMFGERHLKE GSCIFPEELS670 680 690 700 710 720PKRMDTEMED LEEDLIVLPG KSHPKRPNSQ SQHTKTGLSS SILLYTPLNT VAPDDNDRPT730 740 750 760 770 780TDMCSPAFPI LGTTPAFGPQ GSYEKASTEV AGRTCCTPQL AHLKDSVCLA SDTKQFDSSG790 800 810 820 830 840SPAKPHTTLQ VSGRQGQPTC DCDSVPPGTP PPIESFTFKE NQLCRNTCQE LHKHSVEQTE850 860 870 880 890 900TAELPASDSI NPGNLQLVSE LKNPSGSCSV DVSAMFWERA GCKEPCIITA CEDVVSLWKA910 920 930 940 950 960LDAWQWEKLY TWHFAEVPVL QIVPVPDVYN LVCVALGNLE IREIRALFCS SDDESEKQVL970 980 990 1000 1010 1020LKSGNIKAVL GLTKRRLVSS SGTLSDQQVE VMTFAEDGGG KENQFLMPPE ETILTFAEVQ1030 1040 1050 1060 1070 1080GMQEALLGTT IMNNIVIWNL KTGQLLKKMH IDDSYQASVC HKAYSEMGLL FIVLSHPCAK1090 1100 1110 1120 1130 1140ESESLRSPVF QLIVINPKTT LSVGVMLYCL PPGQAGRFLE GDVKDHCAAA ILTSGTIAIW1150 1160 1170 1180DLLLGQCTAL LPPVSDQHWS FVKWSGTDSH LLAGQKDGNI FVYHYS
3D Structures in PDB
2W18 (X-Ray,1.9 Å resolution)
Comments
PALB2 is a tumor suppressor essential for BRCA2's nuclear localization and function in DNA repair. PALB2 is normally nuclear, however two of the breast/ovarian cancer truncation mutants, W998X and W1038X, where the WD-40 domain is truncated, was found to be mislocalized to the cytoplasm in a KPT-330 sensitive manner in Pauty et al. A putative NES can be found in 928-945 matching traditional NES consensus pattern. This suggest that a normally buried and nonfunctional NES is exposed in these disease-associated truncations and therefore mislocalized. Similarly, the authors also found that the W382X mutation in Histone-binding protein RBBP4 (found in malignant melanoma), another protein with C-terminal WD40 domain, also causes mislocalization of the protein to the cytoplasm.
References
[1]. "Cancer-causing mutations in the tumor suppressor PALB2 reveal a novel cancer mechanism using a hidden nuclear export signal in the WD40 repeat motif"
Pauty J, Couturier AM, Rodrigue A, Caron MC, Coulombe Y, Dellaire G, Masson JY. (2017) Nucleic Acids Res, 45(5):2644-2657 PubMed
Pauty J, Couturier AM, Rodrigue A, Caron MC, Coulombe Y, Dellaire G, Masson JY. (2017) Nucleic Acids Res, 45(5):2644-2657 PubMed
User Input
Accurate identification of NESs is difficult because many sequences in the genome match the NES consensus.
Therefore, some published NESs may be mistakenly identified. Please help us improve the accuracy of NESdb
by providing either a positive or negative flag for the NES in this entry. Supporting comments are required to process the flag.