6A9W:
reference: Crystal structure and biochemical studies of the bifunctional DNA primase-polymerase from phage NrS-1., Guo H, Li M, Wang T, Wu H, Zhou H, Xu C, Yu F, Liu X, He J, Biochem Biophys Res Commun. 2019 Mar 19;510(4):573-579. doi:, 10.1016/j.bbrc.2019.01.144. Epub 2019 Feb 7. PMID: 30739783

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