Summary for ERα (NES ID: 166)

Full Name
Estradiol Receptor α     UniProt    
Alternative Names
Estrogen Receptor, ERα Estradiol receptor, Nuclear receptor subfamily 3 group A member 1   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive,  Binds CRM1 Ref.1Hormone-dependent nuclear export of estradiol receptor and DNA synthesis in breast cancer cells., Lombardi et al., J Cell Biol, 2008 Ref.3Estrogen Receptors Localization and Signaling Pathways in DU-145 Human Prostate Cancer Cells, Souza et al., Mol Cell Endocrinol, 2019
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
I451A/I452A/L453A/L454A Ref.1Hormone-dependent nuclear export of estradiol receptor and DNA synthesis in breast cancer cells., Lombardi et al., J Cell Biol, 2008
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
444EFVCLKSIILLNS456 Ref.1Hormone-dependent nuclear export of estradiol receptor and DNA synthesis in breast cancer cells., Lombardi et al., J Cell Biol, 2008
Secondary Structure of Export Signal
α-heix
Other Residues Important for Export
*shown as green residues in the full sequence
Y537 Ref.2Tyrosine phosphorylation of estradiol receptor by Src regulates its hormone-dependent nuclear export and cell cycle progression in breast cancer cells, Castoria et al., Oncogene, 2012
Sequence
Show FASTA Format Show Domain Info by CDD Show Secondary Structure by PSIPRED Show Conservation Score by AL2CO 
        10         20         30         40         50         60 
MTMTLHTKAS GMALLHQIQG NELEPLNRPQ LKIPLERPLG EVYLDSSKPA VYNYPEGAAY 

        70         80         90        100        110        120 
EFNAAAAANA QVYGQTGLPY GPGSEAAAFG SNGLGGFPPL NSVSPSPLML LHPPPQLSPF 

       130        140        150        160        170        180 
LQPHGQQVPY YLENEPSGYT VREAGPPAFY RPNSDNRRQG GRERLASTND KGSMAMESAK 

       190        200        210        220        230        240 
ETRYCAVCND YASGYHYGVW SCEGCKAFFK RSIQGHNDYM CPATNQCTID KNRRKSCQAC 

       250        260        270        280        290        300 
RLRKCYEVGM MKGGIRKDRR GGRMLKHKRQ RDDGEGRGEV GSAGDMRAAN LWPSPLMIKR 

       310        320        330        340        350        360 
SKKNSLALSL TADQMVSALL DAEPPILYSE YDPTRPFSEA SMMGLLTNLA DRELVHMINW 

       370        380        390        400        410        420 
AKRVPGFVDL TLHDQVHLLE CAWLEILMIG LVWRSMEHPG KLLFAPNLLL DRNQGKCVEG 

       430        440        450        460        470        480 
MVEIFDMLLA TSSRFRMMNL QGEEFVCLKS IILLNSGVYT FLSSTLKSLE EKDHIHRVLD 

       490        500        510        520        530        540 
KITDTLIHLM AKAGLTLQQQ HQRLAQLLLI LSHIRHMSNK GMEHLYSMKC KNVVPLYDLL 

       550        560        570        580        590            
LEMLDAHRLH APTSRGGASV EETDQSHLAT AGSTSSHSLQ KYYITGEAEG FPATV
3D Structures in PDB
2OCF (X-Ray,2.95 Å resolution)
Comments
Lombardi et al. reported that ERα nuclear export is dependent on estradiol-mediated phosphatidylinositol-3-kinase (PI3K)/AKT activation and LMB sensitive. CRM1 can be found in co-IP with ERα. A putative NES was identified, which is active upon actinomycin D treatment and can be inhibited by LMB. Peptide containing putative NES can inhibit CRM1 interaction and ERα nuclear export. Castoria et al. reported that Tyr537 phosphorylation is critical for estradiol-sensitive CRM1 interaction and nuclear export. Souza et al. more recently reported that both ERα/β are sensitive to LMB treatment. It is unclear whether ERβ contain putative NES. It should be noted that the proposed NES is in a folded structure.
Doubts about NES: The proposed NES failed to bind CRM1 in GST-pulldown assay (Chook Lab, unpublished results). Ref.2Tyrosine phosphorylation of estradiol receptor by Src regulates its hormone-dependent nuclear export and cell cycle progression in breast cancer cells, Castoria et al., Oncogene, 2012 Ref.3Estrogen Receptors Localization and Signaling Pathways in DU-145 Human Prostate Cancer Cells, Souza et al., Mol Cell Endocrinol, 2019
References
[1]. "Hormone-dependent nuclear export of estradiol receptor and DNA synthesis in breast cancer cells."
Lombardi M, Castoria G, Migliaccio A, Barone MV, Di Stasio R, Ciociola A, Bottero D, Yamaguchi H, Appella E, Auricchio F. (2008) J Cell Biol, 182:327-40 PubMed
[2]. "Tyrosine phosphorylation of estradiol receptor by Src regulates its hormone-dependent nuclear export and cell cycle progression in breast cancer cells"
Castoria G, Giovannelli P, Lombardi M, De Rosa C, Giraldi T, de Falco A, Barone MV, Abbondanza C, Migliaccio A, Auricchio F. (2012) Oncogene, 31(46):4868-77 PubMed
[3]. "Estrogen Receptors Localization and Signaling Pathways in DU-145 Human Prostate Cancer Cells"
Souza DS, Lombardi APG, Vicente CM, Lucas TFG, Erustes AG, Pereira GJS, Porto CS. (2019) Mol Cell Endocrinol, 483:11-23 PubMed
User Input
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