Crystallization and preliminary X-ray diffraction analysis of L,L-diaminopimelate aminotransferase (DapL) from Chlamydomonas reinhardtii

Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 Jan 1;67(Pt 1):140-3. doi: 10.1107/S174430911004844X. Epub 2010 Dec 24.


In the anabolic synthesis of diaminopimelate and lysine in plants and in some bacteria, the enzyme L,L-diaminopimelate aminotransferase (DapL; EC catalyzes the conversion of tetrahydrodipicolinic acid (THDPA) to L,L-diaminopimelate, bypassing the DapD, DapC and DapE enzymatic steps in the bacterial acyl pathways. Here, the cloning, expression, purification, crystallization and preliminary X-ray diffraction analysis of DapL from the alga Chlamydomonas reinhardtii are presented. Protein crystals were grown in conditions containing 25% (w/v) PEG 3350 and 200 mM lithium sulfate and initially diffracted to ∼1.35 Å resolution. They belonged to space group P2(1)2(1)2(1), with unit-cell parameters a=58.9, b=91.8, c=162.9 Å. The data were processed to 1.55 Å resolution with an Rmerge of 0.081, an Rp.i.m. of 0.044, an Rr.i.m of 0.093 and a VM of 2.28 Å3 Da(-1).

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Chlamydomonas reinhardtii / enzymology*
  • Cloning, Molecular
  • Crystallization
  • Crystallography, X-Ray
  • Diaminopimelic Acid / chemistry
  • Diaminopimelic Acid / metabolism
  • Molecular Sequence Data
  • Molecular Structure
  • Plant Proteins / chemistry*
  • Plant Proteins / genetics
  • Plant Proteins / metabolism
  • Transaminases / chemistry*
  • Transaminases / genetics
  • Transaminases / metabolism


  • Plant Proteins
  • Diaminopimelic Acid
  • Transaminases