Crystallization and preliminary crystallographic analysisof Streptomyces griseus aminopeptidase

Orna Almog, Harry M. Greenblatt, Ania Spangin, Daniella Ben-Meir, Shmaryahu Blumberg, Gil Shoham

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


Streptomyces griseus excretes a small molecular mass (30 kDa) aminopeptidase that could be used for various biotechnological applications. This enzyme was isolated from an extracellular protease mixture of Streptomyces griseus (Pronase E, Sigma) and single crystals were obtainedby the vapor diffusion method using polyethylene glycol 4000 as the precipitant. The crystals belong to the tetragonal space group P41212 (P43212), with cell dimensions of a = b = 61·82(3) Å and c = 145·88(4) Å. Thesecrystals are mechanically strong, they are stable in the X-ray beam and they diffract to better than 1·8 Å resolution. The cell dimensions and the cell symmetry are consistent with one molecule in the asymmetric unit and the crystals are suitable for a detailed high-resolution crystallographic analysis. A complete nativedata set to 1·9 Å resolution has been collected on a Rigaku R-AXIS-IIC Imaging Plate Detector system and a heavy-atom derivative search is in progress.

Original languageEnglish
Pages (from-to)342-344
Number of pages3
JournalJournal of Molecular Biology
Issue number1
StatePublished - 5 Mar 1993
Externally publishedYes


  • Aminopeptidase
  • Crystallization
  • Streptomyces griseus
  • X-ray analysis

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Molecular Biology


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