Hsing, and Silhavy. (1997) 1997. “Function of Conserved Histidine-243 in Phosphatase Activity of EnvZ, the Sensor for Porin Osmoregulation in Escherichia Coli”. J Bacteriol 179 (11): 3729-35. doi:10.1128/jb.179.11.3729-3735.1997. Reference Link
Ricci, Dante, Christine Hagan, Daniel Kahne, and Thomas Silhavy. (2012) 2012. “Activation of the Escherichia Coli β-Barrel Assembly Machine (Bam) Is Required for Essential Components to Interact Properly With Substrate”. Proc Natl Acad Sci U S A 109 (9): 3487-91. doi:10.1073/pnas.1201362109. Reference Link