Summary for HDAC5 (NES ID: 61)

Full Name
Histone deacetylase 5     UniProt    
Alternative Names
Antigen NY-CO-9   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Signal-dependent nuclear export of a histone deacetylase regulates muscle differentiation, McKinsey et al., Nature, 2000 Ref.2Identification of a signal-responsive nuclear export sequence in class II histone deacetylases, McKinsey et al., Mol Cell Biol, 2001
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
V1086A, L1091A/L1092A, L1092A Ref.2Identification of a signal-responsive nuclear export sequence in class II histone deacetylases, McKinsey et al., Mol Cell Biol, 2001
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
1081EEAETVSAMALLSVGAEQAQAAAAREHSPRPAEEPMEQEPAL1122 Ref.2Identification of a signal-responsive nuclear export sequence in class II histone deacetylases, McKinsey et al., Mol Cell Biol, 2001
Secondary Structure of Export Signal
α-helix-β-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         60 
MNSPNESDGM SGREPSLEIL PRTSLHSIPV TVEVKPVLPR AMPSSMGGGG GGSPSPVELR 

        70         80         90        100        110        120 
GALVGSVDPT LREQQLQQEL LALKQQQQLQ KQLLFAEFQK QHDHLTRQHE VQLQKHLKQQ 

       130        140        150        160        170        180 
QEMLAAKQQQ EMLAAKRQQE LEQQRQREQQ RQEELEKQRL EQQLLILRNK EKSKESAIAS 

       190        200        210        220        230        240 
TEVKLRLQEF LLSKSKEPTP GGLNHSLPQH PKCWGAHHAS LDQSSPPQSG PPGTPPSYKL 

       250        260        270        280        290        300 
PLPGPYDSRD DFPLRKTASE PNLKVRSRLK QKVAERRSSP LLRRKDGTVI STFKKRAVEI 

       310        320        330        340        350        360 
TGAGPGASSV CNSAPGSGPS SPNSSHSTIA ENGFTGSVPN IPTEMLPQHR ALPLDSSPNQ 

       370        380        390        400        410        420 
FSLYTSPSLP NISLGLQATV TVTNSHLTAS PKLSTQQEAE RQALQSLRQG GTLTGKFMST 

       430        440        450        460        470        480 
SSIPGCLLGV ALEGDGSPHG HASLLQHVLL LEQARQQSTL IAVPLHGQSP LVTGERVATS 

       490        500        510        520        530        540 
MRTVGKLPRH RPLSRTQSSP LPQSPQALQQ LVMQQQHQQF LEKQKQQQLQ LGKILTKTGE 

       550        560        570        580        590        600 
LPRQPTTHPE ETEEELTEQQ EVLLGEGALT MPREGSTESE STQEDLEEED EEEDGEEEED 

       610        620        630        640        650        660 
CIQVKDEEGE SGAEEGPDLE EPGAGYKKLF SDAQPLQPLQ VYQAPLSLAT VPHQALGRTQ 

       670        680        690        700        710        720 
SSPAAPGGMK SPPDQPVKHL FTTGVVYDTF MLKHQCMCGN THVHPEHAGR IQSIWSRLQE 

       730        740        750        760        770        780 
TGLLSKCERI RGRKATLDEI QTVHSEYHTL LYGTSPLNRQ KLDSKKLLGP ISQKMYAVLP 

       790        800        810        820        830        840 
CGGIGVDSDT VWNEMHSSSA VRMAVGCLLE LAFKVAAGEL KNGFAIIRPP GHHAEESTAM 

       850        860        870        880        890        900 
GFCFFNSVAI TAKLLQQKLN VGKVLIVDWD IHHGNGTQQA FYNDPSVLYI SLHRYDNGNF 

       910        920        930        940        950        960 
FPGSGAPEEV GGGPGVGYNV NVAWTGGVDP PIGDVEYLTA FRTVVMPIAH EFSPDVVLVS 

       970        980        990       1000       1010       1020 
AGFDAVEGHL SPLGGYSVTA RCFGHLTRQL MTLAGGRVVL ALEGGHDLTA ICDASEACVS 

      1030       1040       1050       1060       1070       1080 
ALLSVELQPL DEAVLQQKPN INAVATLEKV IEIQSKHWSC VQKFAAGLGR SLREAQAGET 

      1090       1100       1110       1120                       
EEAETVSAMA LLSVGAEQAQ AAAAREHSPR PAEEPMEQEP AL
3D Structures in PDB
5UWI (X-ray,2.14 Å resolution)
Comments
HDAC5 is a class II histone deacetylases (HDACs). It has a C-terminal catalytic domain and a N-terminal extension that mediates binding to MEF2. During myopgenesis (mimicked by CaMK signal), they dissociate and HDAC5 translocates from the nucleus to the cytoplasm. McKinsey et al. (2001) showed that mutants lacking of the C-terminal 1081-1122 aa failed to export HDAC5 in response to CaMK. However, this sequence was unable to alter the location of fused GFP. On the other hand, the MITR-HDAC5 fusion protein was efficiently transported from the nucleus to the cytoplasm in response to CaMK. This process was blocked by LMB treatment. Mutating V1086 to alanine greately impaired CaMk-mediated nuclear export, while double mutation of L1091 and L1092 to alanines or single mutation of L1092 to alanine completely abolish the nuclear export of the protein. These NES mutants still retain their ability to bind 14-3-3 protein. On the other hand, McKinsey et al. (2000) has shown that nuclear export of HDAC5 requires 14-3-3 binding. It was suggested in the paper that the NES in HDAC5 was masked in the unphosphorylated state. HDAC5 in nuclear under the direction of NLS between aa 260-304. In response to CaMK signaling, S259 and S498 are phosphorylated, and HDAC5 binds to 14-3-3. This binding unmasks the NES at C-terminal. In turn, HDAC5 is exported to the cytoplasm. Perhaps this is the reason why NES-GFP failed to export in response to CaMK, while NES-MITR was exported. GFP lacks the 14-3-3 binding ability present in MITR. There is confusion about the NES signal for this protein. McKinsey et al. (2000) showed that residues 761-921 can function autonomously to export GFP out of the nucleus and the export is LMB sensitive. However, this sequence doesn't play an important role in the export of HDAC5 upon CaMK signaling.
References
[1]. "Signal-dependent nuclear export of a histone deacetylase regulates muscle differentiation"
McKinsey, T.A., Zhang, C.L., Lu, J., Olson, E.N. (2000) Nature, 408:106-111 PubMed
[2]. "Identification of a signal-responsive nuclear export sequence in class II histone deacetylases"
McKinsey, T.A., Zhang, C.L., Olson, E.N. (2001) Mol Cell Biol, 21:6312-6321 PubMed
User Input
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