Summary for CHP1 (NES ID: 96)
Full Name
Calcineurin B homologous protein 1 UniProt
Alternative Names
Calcium-binding protein p22, Calcineurin B homolog,
Organism
Homo sapiens (Human)
Experimental Evidence for CRM1-mediated Export
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
V143A/V145A/I147A/V183A/V185A, V138A/L139A/V179A/L180A Ref.1Two nuclear export signals specify the cytoplasmic localization of calcineurin B homologous protein 1., Nagita et al., J Biol Chem, 2003 Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
138VLRMMVGVNI147, 176FVKVLEKVDV185 Ref.1Two nuclear export signals specify the cytoplasmic localization of calcineurin B homologous protein 1., Nagita et al., J Biol Chem, 2003 Secondary Structure of Export Signal
Unknown
Other Residues Important for Export
Unknown
Sequence
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Show Domain Info by CDD
Show Secondary Structure by PSIPRED
Show Conservation Score by AL2CO
10 20 30 40 50 60MGSRASTLLR DEELEEIKKE TGFSHSQITR LYSRFTSLDK GENGTLSRED FQRIPELAIN70 80 90 100 110 120PLGDRIINAF FPEGEDQVNF RGFMRTLAHF RPIEDNEKSK DVNGPEPLNS RSNKLHFAFR130 140 150 160 170 180LYDLDKDEKI SRDELLQVLR MMVGVNISDE QLGSIADRTI QEADQDGDSA ISFTEFVKVL190EKVDVEQKMS IRFLH
3D Structures in PDB
2CT9 (X-Ray,2.20 Å resolution)
Comments
CHP1 is a member of the samll calcium-binding proteins with an EF-hand motif. CHP1 is usually located in the cytoplasm. It can translocate to the nucleus upon overexpression of DRAK2. Nagita et al. showed that the two putative NESs at the C-terminus help to return CHP1 to the cytoplasm.
Doubt about NES: The C-terminal NES failed to bind CRM1 in GST-pulldown assay.
Doubt about NES: The C-terminal NES failed to bind CRM1 in GST-pulldown assay.
References
[1]. "Two nuclear export signals specify the cytoplasmic localization of calcineurin B homologous protein 1."
Nagita M, Inoue H, Nakamura N, Kanazawa H. (2003) J Biol Chem, 134:919-25 PubMed
Nagita M, Inoue H, Nakamura N, Kanazawa H. (2003) J Biol Chem, 134:919-25 PubMed
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