Granzyme

spinqualitylabelsall models Structure of glycosylated human granzyme B (green) complex with pentapeptide inhibitor (magenta) and Zn+2 ions (grey) (PDB entry 1iau) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Function Granzymes (GZM) or cytotoxic T-lymphocyte proteinase 1 are serine proteases which induce apoptosis in virus-infected cells. Granzyme A is the most abundant serine protease in killer cells cytotoxic granules . Granzyme B and C induce cytotoxic T lymphocyte-mediated target cell apoptosis . Granzyme H helps granzyme B kill adenovirus-infected cells . Granzyme K functions in a similar way to granzyme A . Granzyme M induces target cell death, inhibits viral replication and regulates inflammation . Structural highlights The active site of human GZMB contains the typical serine protease catalytic triad and oxyanion hole.

3D structures of granzyme

Updated on 12-August-2026

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• Granzyme A
  • 1op8 – hGZM
    
  • 1orf – hGZM (mutant)
• Granzyme B
  • 1fi8 – GZM (mutant) + ecotin – rat
    
  • 1fq3 – hGZM
    
  • 1iau – hGZM + polypeptide
    
• Granzyme C
  • 3fzz – mGZM – mouse
    
  • 3g01 – mGZM (mutant)
• Granzyme H
  • 4gaw – hGZM
    
  • 3tk9 - hGZM (mutant)
    
  • 3tju, 3tjv - hGZM (mutant) + polypeptide
    
• Granzyme K
  • 1mza, 1mzd – h-proGZM (mutant)
• Granzyme M
  • 2zgc – hGZM
    
  • 2zgh, 2zks - hGZM + polypeptide
    
  • 2zgj – hGZM (mutant) + polypeptide
    

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Michal Harel, Alexander Berchansky