Summary for PLC-δ1 (NES ID: 33)

Full Name
1-phosphatidylinositol-4,5-bisphosphate phosphodiesterase delta-1     UniProt    
Alternative Names
Phosphoinositide phospholipase C
Phospholipase C-delta-1
PLC-III    
Organism
Rattus norvegicus (Rat)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Phospholipase C-delta1 contains a functional nuclear export signal sequence, Yamaga et al., J Biol Chem, 1999
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L172A/I174A, L165A/L169A/L172A/I174A/V176A Ref.1Phospholipase C-delta1 contains a functional nuclear export signal sequence, Yamaga et al., J Biol Chem, 1999
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
164ELKDFLKELNIQVD177 Ref.1Phospholipase C-delta1 contains a functional nuclear export signal sequence, Yamaga et al., J Biol Chem, 1999
Secondary Structure of Export Signal
α-helix
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 
MDSGRDFLTL HGLQDDPDLQ ALLKGSQLLK VKSSSWRRER FYKLQEDCKT IWQESRKVMR 

        70         80         90        100        110        120 
SPESQLFSIE DIQEVRMGHR TEGLEKFARD IPEDRCFSIV FKDQRNTLDL IAPSPADAQH 

       130        140        150        160        170        180 
WVQGLRKIIH HSGSMDQRQK LQHWIHSCLR KADKNKDNKM NFKELKDFLK ELNIQVDDGY 

       190        200        210        220        230        240 
ARKIFRECDH SQTDSLEDEE IETFYKMLTQ RAEIDRAFEE AAGSAETLSV ERLVTFLQHQ 

       250        260        270        280        290        300 
QREEEAGPAL ALSLIERYEP SETAKAQRQM TKDGFLMYLL SADGNAFSLA HRRVYQDMDQ 

       310        320        330        340        350        360 
PLSHYLVSSS HNTYLLEDQL TGPSSTEAYI RALCKGCRCL ELDCWDGPNQ EPIIYHGYTF 

       370        380        390        400        410        420 
TSKILFCDVL RAIRDYAFKA SPYPVILSLE NHCSLEQQRV MARHLRAILG PILLDQPLDG 

       430        440        450        460        470        480 
VTTSLPSPEQ LKGKILLKGK KLGGLLPAGG ENGSEATDVS DEVEAAEMED EAVRSQVQHK 

       490        500        510        520        530        540 
PKEDKLKLVP ELSDMIIYCK SVHFGGFSSP GTSGQAFYEM ASFSESRALR LLQESGNGFV 

       550        560        570        580        590        600 
RHNVSCLSRI YPAGWRTDSS NYSPVEMWNG GCQIVALNFQ TPGPEMDVYL GCFQDNGGCG 

       610        620        630        640        650        660 
YVLKPAFLRD PNTTFNSRAL TQGPWWRPER LRVRIISGQQ LPKVNKNKNS IVDPKVIVEI 

       670        680        690        700        710        720 
HGVGRDTGSR QTAVITNNGF NPRWDMEFEF EVTVPDLALV RFMVEDYDSS SKNDFIGQST 

       730        740        750                                  
IPWNSLKQGY RHVHLLSKNG DQHPSATLFV KISIQD
3D Structures in PDB
1DJX (X-Ray,2.3 Å resolution)
1QAS (X-Ray,2.4 Å resolution)
2ISD (X-Ray,2.5 Å resolution)
Comments
Phosphatidylinositol-specific Phospholipase C (PI-PLC) is one of the key enzymes in the intracellular signal transduction pathway. There are several families of PI-PLC. PLC-&delta1; is predominantly located at the plasma memebrance and in the cytosol, while PLC-&delta4 is mostly nuclear. By sequence comparison, Yamaga et al. speculate that aa 164-177 in its EF-hand domain is a typical NES. Mutations of L172A/I174A causes the whole protein to show nuclear presence. They also show the aa 164-177, when conjugated to OV, can cause the fusion protein to be excluded from the nucleus following nuclear injection. The mutant form of NES (L165A/L169A/L172A/I174A/V176A) failed to do so. LMB treatment inhibits the nuclear export of NES-OV. They also showed that LMB induces nuclear accumulation of endogenous PLC-δ1. They also speculated that based on X-ray structure, calcium binding causes conformational change of the EF-hand, exposing the NES sequence for CRM1 to bind.
References
[1]. "Phospholipase C-delta1 contains a functional nuclear export signal sequence"
Yamaga, M., Fujii, M., Kamata, H., Hirata H, Yagisawa, H.. (1999) J Biol Chem, 274:28537-28541 PubMed
User Input
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