AUTHOR=Office Frontiers Production TITLE=Erratum: Active-Site Models of Streptococcus pyogenes Cas9 in DNA Cleavage State JOURNAL=Frontiers in Molecular Biosciences VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/molecular-biosciences/articles/10.3389/fmolb.2021.719327 DOI=10.3389/fmolb.2021.719327 ISSN=2296-889X