Summary for Php4 (NES ID: 148)

Full Name
CCAAT-binding factor complex subunit Php4     UniProt    
Alternative Names
None
Organism
Schizosaccharomyces pombe (Fission yeast)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Both Php4 function and subcellular localization are regulated by iron via a multistep mechanism involving the glutaredoxin Grx4 and the exportin Crm1., Mercier et al., J Biol Chem, 2009
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L93A/L94A/L97A/L100A Ref.1Both Php4 function and subcellular localization are regulated by iron via a multistep mechanism involving the glutaredoxin Grx4 and the exportin Crm1., Mercier et al., J Biol Chem, 2009
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
73RVREKQYQDTIGKLQKENNELLEQLEMLQAQLKNSTLDSPKEVEVNSEVV122 Ref.1Both Php4 function and subcellular localization are regulated by iron via a multistep mechanism involving the glutaredoxin Grx4 and the exportin Crm1., Mercier et al., J Biol Chem, 2009
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 
MESSKSPSEV EKSSSASPAP QKPMIRVSKQ WVVPPRPKPG RKPALDALGR RKAPIKPRPG 

        70         80         90        100        110        120 
PTSALSVEEA KFRVREKQYQ DTIGKLQKEN NELLEQLEML QAQLKNSTLD SPKEVEVNSE 

       130        140        150        160        170        180 
VVKPDSATTE NENRYVNQYN YPVEPPCAKN AVYTEIPIEL DPHAFLGDSA KRIRVDSDSK 

       190        200        210        220        230        240 
DAKSVPSENG RIRVSMSPQN EINFTPENPA VMEKIRKRGV CNSVEGCLYS GSPKSVKRVR 

       250        260        270        280        290            
ESEETKVYAQ LLIDLHKSSK SAPMLKAGPS IAFKLPTMEP NFNDVRPVTS ISSSS
3D Structures in PDB
Not Available
Comments
Php4 is a subunit of the CCAAT-binding protein complex, which also includes Php2,Php3, and Php5. The CCAAT-binding complex is one of the two iron-regulated proteins that control iron homostatis in S. pombe. Mercier et al. showed that Php4 accumulates into the nucleus in response to low levels of iron and relocalizes to the cytoplasm when iron is repleted.
References
[1]. "Both Php4 function and subcellular localization are regulated by iron via a multistep mechanism involving the glutaredoxin Grx4 and the exportin Crm1."
Mercier A, Labbe S (2009) J Biol Chem, 284:20249-62 PubMed
User Input
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