Purification, crystallization and preliminary X-ray analysis of the HsdR subunit of the EcoR124I endonuclease from Escherichia coli

Mikalai Lapkouski, Santosh Panjikar, Ivana Kuta Smatanova, Eva Csefalvay

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)


EcoR124I is a multicomplex enzyme belonging to the type I restriction-modification system from Escherichia coli. Although EcoR124I has been extensively characterized biochemically, there is no direct structural information available about particular subunits. HsdR is a motor subunit that is responsible for ATP hydrolysis, DNA translocation and cleavage of the DNA substrate recognized by the complex. Recombinant HsdR subunit was crystallized using the sitting-drop vapour-diffusion method. Crystals belong to the primitive monoclinic space group, with unit-cell parameters a = 85.75, b = 124.71, c = 128.37 Å, β = 108.14°. Native data were collected to 2.6 Å resolution at the X12 beamline of EMBL Hamburg.

Original languageEnglish
Pages (from-to)582-585
Number of pages4
JournalActa Crystallographica Section F: Structural Biology and Crystallization Communications
Issue number7
Publication statusPublished - 15 Jun 2007
Externally publishedYes


  • Endonucleases
  • HsdR subunit

Cite this