Granzyme B/H Products


Granzyme A and granzyme B are serine proteases that mediate apoptotic signaling in cytotoxic T lymphocytes (CTL) and natural killer (NK) cells. Both granzyme A and granzyme B are synthesized as inactive proenzymes, and they are stored within cytolytic granules and released by effector cells during degranulation. In activated CTLs, granzyme A and granzyme B are processed and activated by cathepsin C, and they then function to induce apoptosis by two distinct pathways. Granzyme B proteolytically cleaves and activates members of the caspase family of cysteine proteases, including caspase-3, caspase-6, caspase-7 and caspase-9. When cleaved, these caspases assemble into active holoenzymes that then mediate apoptosis through a defined proteolytic cascade involving nuclear lamins and PARP (poly ADP ribose polymerase). Granzyme A mediates the activation of apoptosis by inducing single-strand DNA breaks, membrane perturbation and nuclear condensations in an alternative pathway that is independent from caspase activation or the caspase proteolytic cascade.


Entrez Human
Product By Gene ID 3002
Alternate Names
  • EC 3.4.21
  • Lymphocyte protease
  • Granzyme-2
  • Human lymphocyte protein
  • GRB
  • Cytotoxic T-lymphocyte proteinase 2
  • Fragmentin-2
  • Cathepsin G-like 1
  • granzyme-2
  • CSP-B
  • granzyme B
  • CGL-1
  • fragmentin-2
  • CCPI
  • CTLA1fragmentin 2
  • SECTCSPBcytotoxic serine protease B
  • CTSGL1T-cell serine protease 1-3E
  • CGL1CTLA-1
  • C11
  • granzyme B (granzyme 2, cytotoxic T-lymphocyte-associated serine esterase 1)

Research Areas for Granzyme B/H

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Adaptive Immunity
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