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Expression and purification of the type II metacaspase from a unicellular green alga Chlamydomonas reinhardtii

Publikation: Kapitel i bok/rapport/konferenshandlingBokkapitelForskningPeer review

Sammanfattning

Type II metacaspases (MCAs) are proteases, belonging to the C14B MEROPS family. Like the MCAs of type I and type III, they preferentially cleave their substrates after the positively charged amino acid residues (Arg or Lys) at the P1 position. Type II MCAs from various higher plants have already been successfully overexpressed in E. coli mostly as His-tagged proteins and were shown to be proteolytically active after the purification. Here we present a protocol for expression and purification of the only type II MCA from the model green alga Chlamydomonas reinhardtii. The two-step purification, which consists of immobilized metal affinity chromatography using cobalt as ion followed by size-exclusion chromatography, can be performed in 1 day and yields 4 mg CrMCA-II protein per liter of overexpression culture.
OriginalspråkEngelska
Titel på värdpublikationPlant Proteases and Plant Cell Death : Methods and Protocols
FörlagHumana
Sidor13-20
Antal sidor8
ISBN (elektroniskt)978-1-0716-2079-3
ISBN (tryckt)978-1-0716-2078-6
DOI
StatusPublicerad - 2022

Publikationsserier

SerieMethods in Molecular Biology
Numrering2447
ISSN1064-3745

Nyckelord

  • Cobalt IMAC
  • Metacaspase
  • Overexpression
  • Protease

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