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Title: BuD, a helix–loop–helix DNA-binding domain for genome modification

Abstract

Crystal structures of BurrH and the BurrH–DNA complex are reported. DNA editing offers new possibilities in synthetic biology and biomedicine for modulation or modification of cellular functions to organisms. However, inaccuracy in this process may lead to genome damage. To address this important problem, a strategy allowing specific gene modification has been achieved through the addition, removal or exchange of DNA sequences using customized proteins and the endogenous DNA-repair machinery. Therefore, the engineering of specific protein–DNA interactions in protein scaffolds is key to providing ‘toolkits’ for precise genome modification or regulation of gene expression. In a search for putative DNA-binding domains, BurrH, a protein that recognizes a 19 bp DNA target, was identified. Here, its apo and DNA-bound crystal structures are reported, revealing a central region containing 19 repeats of a helix–loop–helix modular domain (BurrH domain; BuD), which identifies the DNA target by a single residue-to-nucleotide code, thus facilitating its redesign for gene targeting. New DNA-binding specificities have been engineered in this template, showing that BuD-derived nucleases (BuDNs) induce high levels of gene targeting in a locus of the human haemoglobin β (HBB) gene close to mutations responsible for sickle-cell anaemia. Hence, the unique combination of high efficiency and specificitymore » of the BuD arrays can push forward diverse genome-modification approaches for cell or organism redesign, opening new avenues for gene editing.« less

Authors:
 [1]; ;  [1]; ; ;  [2];  [1];  [2];  [1]
  1. Spanish National Cancer Research Centre (CNIO), Calle de Melchor Fernández Almagro 3, 28029 Madrid (Spain)
  2. Cellectis, 8 Rue de la Croix Jarry, 75013 Paris (France)
Publication Date:
OSTI Identifier:
22347774
Resource Type:
Journal Article
Journal Name:
Acta Crystallographica. Section D: Biological Crystallography
Additional Journal Information:
Journal Volume: 70; Journal Issue: Pt 7; Other Information: PMCID: PMC4089491; PMID: 25004980; PUBLISHER-ID: cb5061; OAI: oai:pubmedcentral.nih.gov:4089491; Copyright (c) Stella et al. 2014; This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0907-4449
Country of Publication:
Denmark
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL STRUCTURE; CRYSTALS; DAMAGE; DNA; EFFICIENCY; INTERACTIONS; MODIFICATIONS; MODULATION; SPECIFICITY

Citation Formats

Stella, Stefano, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Molina, Rafael, López-Méndez, Blanca, Juillerat, Alexandre, Bertonati, Claudia, Daboussi, Fayza, Campos-Olivas, Ramon, Duchateau, Phillippe, Montoya, Guillermo, and University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen. BuD, a helix–loop–helix DNA-binding domain for genome modification. Denmark: N. p., 2014. Web. doi:10.1107/S1399004714011183.
Stella, Stefano, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Molina, Rafael, López-Méndez, Blanca, Juillerat, Alexandre, Bertonati, Claudia, Daboussi, Fayza, Campos-Olivas, Ramon, Duchateau, Phillippe, Montoya, Guillermo, & University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen. BuD, a helix–loop–helix DNA-binding domain for genome modification. Denmark. https://doi.org/10.1107/S1399004714011183
Stella, Stefano, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Molina, Rafael, López-Méndez, Blanca, Juillerat, Alexandre, Bertonati, Claudia, Daboussi, Fayza, Campos-Olivas, Ramon, Duchateau, Phillippe, Montoya, Guillermo, and University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen. 2014. "BuD, a helix–loop–helix DNA-binding domain for genome modification". Denmark. https://doi.org/10.1107/S1399004714011183.
@article{osti_22347774,
title = {BuD, a helix–loop–helix DNA-binding domain for genome modification},
author = {Stella, Stefano and University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen and Molina, Rafael and López-Méndez, Blanca and Juillerat, Alexandre and Bertonati, Claudia and Daboussi, Fayza and Campos-Olivas, Ramon and Duchateau, Phillippe and Montoya, Guillermo and University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen},
abstractNote = {Crystal structures of BurrH and the BurrH–DNA complex are reported. DNA editing offers new possibilities in synthetic biology and biomedicine for modulation or modification of cellular functions to organisms. However, inaccuracy in this process may lead to genome damage. To address this important problem, a strategy allowing specific gene modification has been achieved through the addition, removal or exchange of DNA sequences using customized proteins and the endogenous DNA-repair machinery. Therefore, the engineering of specific protein–DNA interactions in protein scaffolds is key to providing ‘toolkits’ for precise genome modification or regulation of gene expression. In a search for putative DNA-binding domains, BurrH, a protein that recognizes a 19 bp DNA target, was identified. Here, its apo and DNA-bound crystal structures are reported, revealing a central region containing 19 repeats of a helix–loop–helix modular domain (BurrH domain; BuD), which identifies the DNA target by a single residue-to-nucleotide code, thus facilitating its redesign for gene targeting. New DNA-binding specificities have been engineered in this template, showing that BuD-derived nucleases (BuDNs) induce high levels of gene targeting in a locus of the human haemoglobin β (HBB) gene close to mutations responsible for sickle-cell anaemia. Hence, the unique combination of high efficiency and specificity of the BuD arrays can push forward diverse genome-modification approaches for cell or organism redesign, opening new avenues for gene editing.},
doi = {10.1107/S1399004714011183},
url = {https://www.osti.gov/biblio/22347774}, journal = {Acta Crystallographica. Section D: Biological Crystallography},
issn = {0907-4449},
number = Pt 7,
volume = 70,
place = {Denmark},
year = {Tue Jul 01 00:00:00 EDT 2014},
month = {Tue Jul 01 00:00:00 EDT 2014}
}