Summary for MRTF-A (NES ID: 274)

Full Name
Myocardin-related transcription factor A     UniProt    
Alternative Names
MKL/myocardin-like protein 1, Megakaryoblastic leukemia 1 protein homolog, Megakaryocytic acute leukemia protein homolog, Basic SAP coiled-coil transcription activator   
Organism
Mus musculus (Mouse)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive,  Binds CRM1 Ref.1"Differences in the Nuclear Export Mechanism between Myocardin and Myocardin-related Transcription Factor A", Hayashi et al., J Biol Chem, 2013 Ref.2Nuclear actin regulates dynamic subcellular localization and activity of the SRF cofactor MAL , Vartiainen et al., Science, 2007
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L21A, L307A, L21A/L307A Ref.1"Differences in the Nuclear Export Mechanism between Myocardin and Myocardin-related Transcription Factor A", Hayashi et al., J Biol Chem, 2013
Mutations That Affect CRM1 Binding
*shown as red residues in the full sequence
L21A, L307A, L21A/L307A Ref.1"Differences in the Nuclear Export Mechanism between Myocardin and Myocardin-related Transcription Factor A", Hayashi et al., J Biol Chem, 2013
Functional Export Signals
Undetermined
Secondary Structure of Export Signal
Unknown
Other Residues Important for Export
*shown as green residues in the full sequence
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 
MTLLEPEMLM MAVQSVLQLK LQQRRTREEL VSQGIMPPLK SPAAFHEQRR SLERARTEDY 

        70         80         90        100        110        120 
LKRKIRSRPE RAELVRMHIL EETSAEPSLQ AKQLKLKRAR LADDLNEKIA QRPGPMELVE 

       130        140        150        160        170        180 
KNILPVESSL KEAIIVGQVN YPKVADSSSF DEDSSDALSP EQPASHESQG SVPSPLESRV 

       190        200        210        220        230        240 
SDPLPSATSI SPTQVLSQLP MAPDPGETLF LAEQPPLPPA PLLPPSLANG SIVPTAKPAP 

       250        260        270        280        290        300 
TLIKQSQPKS ASEKSQRSKK AKELKPKVKK LKYHQYIPPD QKQDKGAPAM DSSYAKILQQ 

       310        320        330        340        350        360 
QQLFLQLQIL NQQQQQQQQQ HYNYQAILPA PPKPSAETPG SSAPTPSRSL STSSSPSSGT 

       370        380        390        400        410        420 
PGPSGLARQS STALAAKPGA LPANLDDMKV AELKQELKLR SLPVSGTKTE LIERLRAYQD 

       430        440        450        460        470        480 
QVSPAPGAPK APATTSVLSK AGEVVVAFPA ALLSTGSALV TAGLAPAEMV VATVTSNGMV 

       490        500        510        520        530        540 
KFGSTGSTPP VSPTPSERSL LSTGDENSTP GDAFGEMVTS PLTQLTLQAS PLQIVKEEGA 

       550        560        570        580        590        600 
RAASCCLSPG ARAELEGLDK DQMLQEKDKQ IEELTRMLQQ KQQLVELLRL QLEQQKRAQQ 

       610        620        630        640        650        660 
PAPASSPVKR ESGFSSCQLS CQPQGSAHAF GSGLVVPTTN HGDTQAPAPE SPPVVVKQEA 

       670        680        690        700        710        720 
GPPEPDLAPS SQLLLGSQGT SFLKRVSPPT LVTDSTGTHL ILTVTNKSAD GPGLPAGSPQ 

       730        740        750        760        770        780 
QPLSQPGSPA PGPPAQMDLE HPPQPPFATP TSLLKKEPPG YEETVTQQPK QQENGSSSQH 

       790        800        810        820        830        840 
MDDLFDILIQ SGEISADFKE PPSLPGKEKS PPAAAAYGPP LTPQPSPLSE LPQAAPPPGS 

       850        860        870        880        890        900 
PTLPGRLEDF LESSTGLPLL TSGHEGPEPL SLIDDLHSQM LSSSAILDHP PSPMDTSELH 

       910        920        930        940        950        960 
FAPEPSSGMG LDLAVGHLDS MDWLELSSGG PVLSLAPLST AAPSLFSMDF LDGHDLQLHW 

                                                                  
DSCL
3D Structures in PDB
2YJE (X-Ray,3.1 Å resolution)
Comments
MRTFs are transcription factors that associate with serum response factor (SRF) and actin to couple cytoskeletal dynamics to gene expression. Hayashi and Morita identified two 2 possible NESs (L1: 17-21 and L2: 303-307) within MRTF-A and found its binding to CRM1 suppressed by G-actin. However, Vartiainen et al. has illustrated that actin interaction facilitates nuclear export. Panayiotou et al. has claimed to identified more regions required for nuclear export, however it appears that the sequence used in the study is another isoform that is possibly synthetic. Ref.1"Differences in the Nuclear Export Mechanism between Myocardin and Myocardin-related Transcription Factor A", Hayashi et al., J Biol Chem, 2013 Ref.2Nuclear actin regulates dynamic subcellular localization and activity of the SRF cofactor MAL , Vartiainen et al., Science, 2007 Ref.3Phosphorylation acts positively and negatively to regulate MRTF-A subcellular localisation and activity, Panayiotou et al., eLife, 2016
References
[1]. ""Differences in the Nuclear Export Mechanism between Myocardin and Myocardin-related Transcription Factor A""
Hayashi, K., Morita, T. (2013) J Biol Chem, 288 (8):5743-5755 PubMed
[2]. "Nuclear actin regulates dynamic subcellular localization and activity of the SRF cofactor MAL "
Vartiainen, M.K., Guettler, S., Larijani, B., Treisman, R. (2007) Science, 316:1749-1752 PubMed
[3]. "Phosphorylation acts positively and negatively to regulate MRTF-A subcellular localisation and activity"
Panayiotou R, Miralles F, Pawlowski R, Diring J, Flynn HR, Skehel M, Treisman R. (2016) eLife, 5:e15460 PubMed
User Input
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