Serine/threonine-protein phosphatase PGAM5, mitochondrial - Q96HS1 (PGAM5_HUMAN)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

 
Function
Displays phosphatase activity for serine/threonine residues, and, dephosphorylates and activates MAP3K5 kinase. Has apparently no phosphoglycerate mutase activity. May be regulator of mitochondrial dynamics. Substrate for a KEAP1-dependent ubiquitin ligase complex. Contributes to the repression of NFE2L2-dependent gene expression. Acts as a central mediator for programmed necrosis induced by TNF, by reactive oxygen species and by calcium ionophore. UniProt
Catalytic Activity
H2O + O-phospho-L-threonyl-[protein] = L-threonyl-[protein] + phosphate UniProt
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Subunit Structure
Dimer. Forms a ternary complex with NFE2L2 and KEAP1. Interacts with BCL2L1 and MAP3K5. Upon TNF-induced necrosis, forms in complex with RIPK1, RIPK3 and MLKL; the formation of this complex leads to PGAM5 phosphorylation. Isoform 2, but not isoform 1, interacts with DNM1L; this interaction leads to DNM1L dephosphorylation and activation and eventually to mitochondria fragmentation. UniProt
Domain
The N-terminal 35 amino acids, including the potential transmembrane alpha-helix, function as a non-cleaved mitochondrial targeting sequence that targets the protein to the cytosolic side of the outer mitochondrial membrane. UniProt
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Data in green originates from UniProtKB  
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Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
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Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
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  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from the SWISS-MODEL Repository  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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