Summary for λPKC (NES ID: 42)

Full Name
Protein kinase C ι type     UniProt    
Alternative Names
Atypical protein kinase C-λ/ι   
Organism
Mus musculus (Mouse)    
Experimental Evidence for CRM1-mediated Export
Mutations That Affect Nuclear Export
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
194SLPPEPMMPMDQTMHPDHTQTVIPYNPSSHESLDQVGEEKEAMNTRESGKASSSLGLQDF
DLL256 Ref.1Nuclear import and export signals enable rapid nucleocytoplasmic shuttling of the atypical protein kinase C λ, Perander et al., J Biol Chem, 2001
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
MPTQRDSSTM SHTVACGGGG DHSHQVRVKA YYRGDIMITH FEPSISFEGL CSEVRDMCSF
70 80 90 100 110 120
DNEQPFTMKW IDEEGDPCTV SSQLELEEAF RLYELNKDSE LLIHVFPCVP ERPGMPCPGE
130 140 150 160 170 180
DKSIYRRGAR RWRKLYCANG HTFQAKRFNR RAHCAICTDR IWGLGRQGYK CINCKLLVHK
190 200 210 220 230 240
KCHKLVTIEC GRHSLPPEPM MPMDQTMHPD HTQTVIPYNP SSHESLDQVG EEKEAMNTRE
250 260 270 280 290 300
SGKASSSLGL QDFDLLRVIG RGSYAKVLLV RLKKTDRIYA MKVVKKELVN DDEDIDWVQT
310 320 330 340 350 360
EKHVFEQASN HPFLVGLHSC FQTESRLFFV IEYVNGGDLM FHMQRQRKLP EEHARFYSAE
370 380 390 400 410 420
ISLALNYLHE RGIIYRDLKL DNVLLDSEGH IKLTDYGMCK EGLRPGDTTS TFCGTPNYIA
430 440 450 460 470 480
PEILRGEDYG FSVDWWALGV LMFEMMAGRS PFDIVGSSDN PDQNTEDYLF QVILEKQIRI
490 500 510 520 530 540
PRSLSVKAAS VLKSFLNKDP KERLGCHPQT GFADIQGHPF FRNVDWDMME QKQVVPPFKP
550 560 570 580 590
NISGEFGLDN FDSQFTNEPV QLTPDDDDIV RKIDQSEFEG FEYINPLLMS AEECV
3D Structures in PDB
1ZRZ (X-Ray,3.0 Å resolution)
Comments
λPKC belongs to atypical protein kinase C family. λPKC has a single zinc finger domain (in comparison with two in other types of PKCs) regulated by lipid products such as ceramide. Perander et al. found that λPKC is mainly located in cytoplasm. But mutations in the ATP-binding site (like K273/W) will cause the protein to be nuclear, indicating the presence of NLS in the sequence. Fragments of λPKC, fused to GFP were examined for their localization. It was found that GFP-λPKC(132-185) is exclusively nuclear, suggesting that it contains a functional NLS. On the other hand, GFP-λPKC(185-251) is exported from the nucleus. LMB treatment induces nuclear accumulation of λPKC. F244A/L246A mutation cause the whole protein to become nuclear also. Note that there is a 9 aa difference between the numbering of the paper and SWISSPROT.
References
[1]. "Nuclear import and export signals enable rapid nucleocytoplasmic shuttling of the atypical protein kinase C λ"
Perander, M., Bjorkoy, G., Johansen, T. (2001) J Biol Chem, 276:13015-13024 PubMed
User Input
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