HHMI UCB LBL

Structural Studies Of DNA and RNA Transactions

Our studies of nucleic acid transactions have been most powerful at defining the overall architecture of a large number of macromolecular assemblies involved in the critical initiation steps in DNA replication, RNA transcription and translation, for which no crystallographic information yet exist (e.g. ORC, TFIID, eIF3), as well as putting the crystal structures of essential elements in RNA processing and degradation in the complex of fully functional complexes (e.g. exosome, RLC). Our aim is to gain mechanistic insight that goes beyond overall architecture, by pushing resolution, describing conformational landscapes, and relating structural states to function via the analysis of interactions with ligands and regulatory factors.

Eukaryotic DNA Replication

During cell division, initiator proteins target and bind to DNA replication origins to trigger genome duplication. We are characterizing the structure of Drosophila melanogaster Origin Recognition Complex (DmORC), and the effect of nucleotide and phosphorylation state in conformation and function ... read more about ORC ...

ORC

Eukaryotic Transcription

Regulated gene transcription in eukaryotes requires the assembly of a complex molecular machinery that includes general factors, activators, cofactor complexes and chromatin modifying and remodeling factors. We are interested in characterizing the structure of these different components and how they interact to regulate transcription. Read more about chromatin remodelers ...   Read more about TFIID ...   Read more about RNAPII...   Read more about PRC2...

transcription

Eukaryotic Translation Initiation

In eukaryotes at least twelve translation initiation factors and an mRNA methylated G-cap are required to initiate protein synthesis, while in many viruses a structured RNA element replaces most of those factors. We are studying the molecular interplays that characterize both initiation pathways ... read more about eIF3

eIF3

Transcription-Coupled DNA Repair

Our lab is part of a large NCI funded project in Structural Biology of DNA Repair that aims at producing biologically relevant DNA repair structures and identifying fundamental structural principles for repair proteins. The role of electron microscopy is to provide structures of large macromolecular complexes involved in these processes... read more

News

Recent publications

Yuan et al. <a href=http://www.nature.com/nature/journal/v533/n7603/full/nature17970.html\> Near-atomic resolution visualization of human transcription promoter opening</a><i> Nature</i>, 2016 May 11; Epub ahead of print Louder et al. <a href=http://www.ncbi.nlm.nih.gov/pubmed/27007846> Structure of promoter-bound TFIID and model of human pre-initiation complex assembly</a><i> Nature</i>, 2016 Mar 23;531(7596):604-9 Jiang and Taylor et al. <a href=http://www.ncbi.nlm.nih.gov/pubmed/26841432> Structures of a CRISPR-Cas9 R-loop complex primed for DNA cleavage.</a> <i>Science</i>, Jan 2016; Epub ahead of print Nogales and Zhang<a href=http://www.sciencedirect.com/science/article/pii/S0959440X16000038> Visualizing microtubule structural transitions and interactions with associated proteins</a> <i>COSB</i>, April 2016; <b>37</b>, 90-96  Zhang et al. <a href=http://www.sciencedirect.com/science/article/pii/S0092867415008491> Mechanistic origin of microtubule dynamic instability and its modulation by EB proteins</a><i> Cell 2015 Aug 13;162(4):849-59

Eva Nogales has been elected to the American Academy of Arts and Sciences

Basil Greber and Kelly Nguyen have won the 2016 RNA Society Scaringe Award

Eva Nogales has won the 2016 Mildred Cohn Award in biological chemistry from the American Society for Biochemistry and Molecular Biology

Harvey Lecture by Eva Nogales