Summary for MKP-7 (NES ID: 41)

Full Name
Dual specificity protein phosphatase 16     UniProt    
Alternative Names
Mitogen-activated protein kinase phosphatase 7   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1MKP-7, a novel mitogen-activated protein kinase phosphatase, functions as a shuttle protein, Masuda et al., J Biol Chem, 2001
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L380A/L383A/L385A
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 
MAHEMIGTQI VTERLVALLE SGTEKVLLID SRPFVEYNTS HILEAININC SKLMKRRLQQ 

        70         80         90        100        110        120 
DKVLITELIQ HSAKHKVDID CSQKVVVYDQ SSQDVASLSS DCFLTVLLGK LEKSFNSVHL 

       130        140        150        160        170        180 
LAGGFAEFSR CFPGLCEGKS TLVPTCISQP CLPVANIGPT RILPNLYLGC QRDVLNKELM 

       190        200        210        220        230        240 
QQNGIGYVLN ASNTCPKPDF IPESHFLRVP VNDSFCEKIL PWLDKSVDFI EKAKASNGCV 

       250        260        270        280        290        300 
LVHCLAGISR SATIAIAYIM KRMDMSLDEA YRFVKEKRPT ISPNFNFLGQ LLDYEKKIKN 

       310        320        330        340        350        360 
QTGASGPKSK LKLLHLEKPN EPVPAVSEGG QKSETPLSPP CADSATSEAA GQRPVHPASV 

       370        380        390        400        410        420 
PSVPSVQPSL LEDSPLVQAL SGLHLSADRL EDSNKLKRSF SLDIKSVSYS ASMAASLHGF 

       430        440        450        460        470        480 
SSSEDALEYY KPSTTLDGTN KLCQFSPVQE LSEQTPETSP DKEEASIPKK LQTARPSDSQ 

       490        500        510        520        530        540 
SKRLHSVRTS SSGTAQRSLL SPLHRSGSVE DNYHTSFLFG LSTSQQHLTK SAGLGLKGWH 

       550        560        570        580        590        600 
SDILAPQTST PSLTSSWYFA TESSHFYSAS AIYGGSASYS AYSCSQLPTC GDQVYSVRRR 

       610        620        630        640        650        660 
QKPSDRADSR RSWHEESPFE KQFKRRSCQM EFGESIMSEN RSREELGKVG SQSSFSGSME 

                                                                  
IIEVS
3D Structures in PDB
Not Available
Comments
MAPK phosphatase (MKP) is a family of dual specificity protein phophsphatases, which dephosphorylate both threonine and tyrosine residues of mitogen-activated protein kinase (MAPK), acting as a form of negative regulation of MAPK activity. Masuda et al. identified a new member of MKP, MKP7, from the gene bank. BAsed on sequence similarity, they speculated that aa 296-313, aa 610-627 are two NLS, while aa 376-385 is a NES. They found that MKP-7 is localized in cytoplasm, but accumulated in the nucleus under LMB treatment, implying that it is a shuttle protein. Deletion of C-terminal (including the proposed NES region) caused the whole protein to be nuclear and insensitive to LMB treatment. They also mentioned that mutation of three Leucines to alanine cause nuclear localization of the protein. But they failed to mention which three (they are four Ls in the proposed NES region).
References
[1]. "MKP-7, a novel mitogen-activated protein kinase phosphatase, functions as a shuttle protein"
Masuda, K., Shima, H., Watanabe, M., Kikuchi, K.. (2001) J Biol Chem, 276:39002-39011 PubMed
User Input
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