IGBMC : Institut de la Génétique et de la Biologie Moléculaire et Cellulaire

• Researchers

  Isabelle BILLAS MASSOBRIO

  Bruno KLAHOLZ

  Kundhavai NATCHIAR

  Alexandre OURJOUMTSEV

• Post-Doctoral Fellows

  Jaime ALEGRIO LOURO

  Brice BEINSTEINER

  Vanessa DACLEU SIEWE

  Clara Ottilie LOEFFELHOLZ VON COLBERG

  Kareem MOHIDEEN ABDUL

  Rachel TABARONI

• PhD Students

  Nadia DJABEUR

  Léo FRECHIN

• Engineers & Technicians

  Isabelle HAZEMANN

  Jean-François MENETRET

  Pierre VILELA

• Master

  Julie LAPOUGES

Integrated structural Biology

Large complexes involved in gene expression

Transcription and translation are fundamental molecular mechanisms of gene activity regulation with profound implications for human health. The ligand-dependent transcriptional regulation by nuclear receptors bound to DNA response elements involves the transient assembly of large co-regulator complexes. These trigger chromatin remodeling and facilitate the assembly of the general transcription machinery on the promoter of the target gene. Gene expression is also regulated at the level of protein synthesis, for example, by protein factors that bind to the ribosome during the translation initiation, elongation and termination phase. The initiation phase is strongly regulated by factors and also by the mRNA itself and well-characterized reaction intermediates of the initiating ribosomal nano-machinery are potential targets for antibiotics. Both transcription and translation complexes represent large, transient macromolecular assemblies that we investigate by using an integrative structural biology approach with crystallography and cryo-electron microscopy forming the core.

Bruno Klaholz is also scientific coordinator of the Biostructure structural biology research infrastructure, itself selected within the FRISBI project.

 Know more about the cryo electron microscopy facilities

Movie: Visualization of modifications in the human ribosome structure, a new feat for cryo electron microscopy

• Current projects

• Collaborations

• Prizes/Awards

  • Bruno Klaholz - Médaille d'Argent - CNRS - 2018
  • Bruno Klaholz - Raimond Castaing Prize - French Society of Microscopies - 2017
  • Bruno KLAHOLZ - Richard Lounsbery prize - Académie des sciences - 2016
  • Bruno KLAHOLZ - ERC Starting grant - European Research Council (ERC) - 2009
  • Bruno KLAHOLZ - Nuclear Receptor Conference Presentation Prize - European Molecular Biology Organization (EMBO) - 2009
  • Bruno KLAHOLZ - Bronze Medal - CNRS - 2008
  • Bruno KLAHOLZ - Paul Mandel Gutenberg Group Prize - CNRS - 2008
  • Bruno Klaholz - EMBO Young Investigator Award - European Molecular Biology Organization Young Investigator Programme (EMBO YIP) - 2006

• News

  • Sept. 13, 2018 - 2017, a year with the CNRS in Alsace
  • Nov. 15, 2017 - Visualization of modifications in the human ribosome structure, a new feat for cryo electron microscopy
  • April 22, 2015 - The fine structure of the human ribosome unveiled!
  • Nov. 7, 2014 - Focus on helical polyribosomes
  • June 19, 2014 - Interplay of symmetry and asymmetry in a nuclear receptor
  • Sept. 24, 2013 - Integrated approach in structural biology: initiation factor IF2 from every angle
  • Feb. 23, 2012 - Official launching of the ESFRI integrative structural biology infrastructure : INSTRUCT
  • Jan. 17, 2012 - First complete 3D mapping of vitamin D receptor

• Publications

  • Activation of the Endonuclease that Defines mRNA 3' Ends Requires Incorporation into an 8-Subunit Core Cleavage and Polyadenylation Factor Complex.

    Hill CH(1), Boreikaite V(1), Kumar A(1), Casanal A(1), Kubik P(1), Degliesposti G(1), Maslen S(1), Mariani A(1), von Loeffelholz O(2), Girbig M(1), Skehel M(1), Passmore LA(3).

    Mol Cell Jan. 31, 2019 .

  • Publisher Correction: N6-Methyladenosine methyltransferase ZCCHC4 mediates ribosomal RNA methylation.

    Ma H(1)(2)(3), Wang X(4), Cai J(5), Dai Q(2)(3), Natchiar SK(6), Lv R(1), Chen K(2)(3), Lu Z(2)(3), Chen H(1), Shi YG(1)(7), Lan F(1), Fan J(5), Klaholz BP(6), Pan T(8), Shi Y(9)(10), He C(11)(12)(13).

    Nat Chem Biol Feb. 8, 2019 .

  • N6-Methyladenosine methyltransferase ZCCHC4 mediates ribosomal RNA methylation.

    Ma H(1)(2)(3), Wang X(4), Cai J(5), Dai Q(2)(3), Natchiar SK(6), Lv R(1), Chen K(2)(3), Lu Z(2)(3), Chen H(1), Shi YG(1)(7), Lan F(1), Fan J(5), Klaholz BP(6), Pan T(8), Shi Y(9)(10), He C(11)(12)(13).

    Nat Chem Biol Jan 2019 ; 15:88-94 .

  • Three-Dimensional Structure of Cytochrome c Nitrite Reductase As Determined by Cryo-Electron Microscopy.

    Baymukhametov TN(1), Chesnokov YM(1), Pichkur EB(1), Boyko KM(1)(2), Tikhonova TV(2), Myasnikov AG(3)(4)(5), Vasiliev AL(1)(6), Lipkin AV(1), Popov VO(1)(2), Kovalchuk MV(1)(6).

    Acta Naturae Jul-Sep 2018 ; 10:48-56 .

  • Visualizing the Role of 2'-OH rRNA Methylations in the Human Ribosome Structure.

    Natchiar SK(1)(2)(3)(4)(5), Myasnikov AG(6)(7)(8)(9)(10), Hazemann I(11)(12)(13)(14)(15), Klaholz BP(16)(17)(18)(19)(20).

    Biomolecules Oct. 25, 2018 .

  • Tetracyclines Modify Translation by Targeting Key Human rRNA Substructures.

    Mortison JD(1), Schenone M(2), Myers JA(1), Zhang Z(1), Chen L(1), Ciarlo C(2), Comer E(2), Natchiar SK(3), Carr SA(2), Klaholz BP(3), Myers AG(4).

    Cell Chem Biol Oct. 5, 2018 .

  • New tools for the analysis and validation of cryo-EM maps and atomic models.

    Afonine PV(1), Klaholz BP(2), Moriarty NW(1), Poon BK(1), Sobolev OV(1), Terwilliger TC(3), Adams PD(1), Urzhumtsev A(2).

    Acta Crystallogr D Struct Biol Sept. 1, 2018 ; 74:814-840 .

  • From deep TLS validation to ensembles of atomic models built from elemental motions. II. Analysis of TLS refinement results by explicit interpretation.

    Afonine PV(1), Adams PD(1), Urzhumtsev A(2).

    Acta Crystallogr D Struct Biol July 1, 2018 ; 74:621-631 .

  • NR3E receptors in cnidarians: A new family of steroid receptor relatives extends the possible mechanisms for ligand binding.

    Khalturin K(1), Billas IML(2), Chebaro Y(2), Reitzel AM(3), Tarrant AM(4), Laudet V(5), Markov GV(6).

    J Steroid Biochem Mol Biol June 22, 2018 .

  • 3DClusterViSu: 3D clustering analysis of super-resolution microscopy data by 3D Voronoi tessellations.

    Andronov L(1)(2)(3)(4), Michalon J(1)(2)(3)(4), Ouararhni K(1)(2)(3)(4), Orlov I(1)(2)(3)(4), Hamiche A(1)(2)(3)(4), Vonesch JL(1)(2)(3)(4), Klaholz BP(1)(2)(3)(4).

    Bioinformatics April 4, 2018 .

  See all publications=>

• Job opportunities

• Alumni

• Videos

  • Video human ribosome

• Thesis subjects

  • Etude Structure-Fonction Du Ribosome Humain (H/F)
  • The Study Of The Molecular Basis Of The Crosstalk Between The Glucocorticoid Receptor And Physiological Partners Offers Perspectives In The Development Of Novel Anti-Inflammatory Therapeutics (H/F)