Summary for ChREBP (NES ID: 178)

Full Name
Carbohydrate response element binding protein     UniProt    
Alternative Names
Wbscr14   
Organism
Rattus norvegicus (Rat)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive,  Binds CRM1 Ref.1The subcellular localization of the ChoRE-binding protein, encoded by the Williams-Beuren syndrome critical region gene 14, is regulated by 14-3-3., Merla et al., Hum. Mol. Genet., 2004 Ref.2Coordinate regulation/localization of the carbohydrate responsive binding protein (ChREBP) by two nuclear export signal sites: discovery of a new leucine-rich nuclear export signal site., Fukasawa et al., Biochem Biophys Res Commun, 2010
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L86A/L93A, L5A/L12A Ref.1The subcellular localization of the ChoRE-binding protein, encoded by the Williams-Beuren syndrome critical region gene 14, is regulated by 14-3-3., Merla et al., Hum. Mol. Genet., 2004 Ref.2Coordinate regulation/localization of the carbohydrate responsive binding protein (ChREBP) by two nuclear export signal sites: discovery of a new leucine-rich nuclear export signal site., Fukasawa et al., Biochem Biophys Res Commun, 2010
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
Undetermined
Secondary Structure of Export Signal
Unknown
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 
MARALADLSV NLQVPRVVPS PDSDSDTDLE DPSPRRSAGG LHRSQVIHSG HFMVSSPHSD 

        70         80         90        100        110        120 
SLTRRRDQEG PVGLADFGPR SIDPTLTRLF ECLSLAYSGK LVSPKWKNFK GLKLLCRDKI 

       130        140        150        160        170        180 
RLNNAIWRAW YIQYVQRRKS PVCGFVTPLQ GSEADEHRKP EAVVLEGNYW KRRIEVVMRE 

       190        200        210        220        230        240 
YHKWRIYYKK RLRKSSREGD FLAPKQVEGG WPPPERWCEQ LFSSVVPVLL GGSEEEPGGR 

       250        260        270        280        290        300 
QLLDLDCFLS DISDTLFTMT QPSPSSLQLP SEDAYVGNAD MIQPDLTPLQ PSLDDFMEIS 

       310        320        330        340        350        360 
DFFTNYRPPQ TPTSSNFPEP PSFGPMADSL FSGGILGPEM PSPASASSSS GMTPLSGNTR 

       370        380        390        400        410        420 
LQARNSCSGP LDPSTFPSSE FLLPEDPKTK MPPAPVPTPL LPYPGPVKVH GLEPCTPSPF 

       430        440        450        460        470        480 
PTMAPPPALL SEEPLFSARF PFTTVPPAPG VSTLPAPTTF VPTPQPGPGP GPVPFPVDHL 

       490        500        510        520        530        540 
PHGYLEPVFG PHFTVPQGVQ PRCKPCSPPP GGRKASPPTL TSATASPTAT ATARDNNPCL 

       550        560        570        580        590        600 
TQLLRAAKPE QVLEPSTVPS TLLRPPESPD AVPEIPRVRA FYPPIPAPTP PRPPPGPATL 

       610        620        630        640        650        660 
APPRSLVVPK AERLSPPASS GSERRPSGDL NSIQPPGALS VHLSPPQTVL SRGRVDNNKM 

       670        680        690        700        710        720 
ENRRITHISA EQKRRFNIKL GFDTLHGLVS TLSAQPSLKV SKATTLQKTA EYILMLQQER 

       730        740        750        760        770        780 
AAMQEEAQQL RDEIEELNAA INLCQQQLPA TGVPITHQRF DQMRDMFDDY VRTRTLHNWK 

       790        800        810        820        830        840 
FWVFSILIRP LFESFNGMVS TASLHSLRQT SLAWLDQYCS LPALRPTVLN SLRQLSTSTS 

       850        860                                             
ILTDPSLVPE QATRAVTEGP LGRPL
3D Structures in PDB
4GNT (X-Ray,2.41 Å resolution)
6MJL (X-Ray,2.5 Å resolution)
Comments
ChREBP controls expression of the carbohydrate response element-containing genes. These genes include liver pyruvate kinase and all liver lipogenic enzymes. It has a NLS, two NESs, a DNA-binding bHLH/Zip domain, and proline-rich domain. The N-terminus of ChREBP interacts with 14-3-3 protein, which can regulate its localization. In the presence of increased circulating glucose, ChREBP is shifted to the nucleus from the cytoplasm, which in turn decreases regulation of LPK expression and lipogenic genes. When exposed to low-glucose conditions, the transcriptional activity of ChREBP is stopped by phosphorylation-mediated protein kinases such as PKA, followed by interaction with 14-3-3. The ChREBP-14-3-3 complex subsequently binds to CRM1 and is localized to the cytosol. Although not proven sufficient, a purported NES is located at amino acids 5-15 as well as 86-95. Both NESs seem to be required for maximum interaction with CRM1.
References
[1]. "The subcellular localization of the ChoRE-binding protein, encoded by the Williams-Beuren syndrome critical region gene 14, is regulated by 14-3-3."
Merla G, Howald C, Antonarakis SE, Reymond A. (2004) Hum. Mol. Genet., 13:1505-14 PubMed
[2]. "Coordinate regulation/localization of the carbohydrate responsive binding protein (ChREBP) by two nuclear export signal sites: discovery of a new leucine-rich nuclear export signal site."
Fukasawa M, Ge Q, Wynn RM, Ishii S, Uyeda K. (2010) Biochem Biophys Res Commun, 391:1166-9 PubMed
User Input
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