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…S.N., Yeo, H.J., Beck, M.R., Blaesing, F., Lurz, R., Lanka, E., Buhrdorf, R., Fischer, W., Haas, R., Waksman, G. (2003) VirB11 ATPases are dynamic hexameric assemblies: new insights into bacterial type IV secretion. EMBO J. 22: 1969-80. PMID: 12727865 Brown, C.K., Madauss, K., Lian, W., Tolbert, W.D., Beck, M.R., and Rodgers, D.W. (2001) Structure of …
https://www.wichita.edu/academics/fairmount_las/chemistry/_faculty/Beck2.php