E. coli sigma70 holoenzyme

Structure of E. coli RNA polymerase holoenzyme in complex with DksA/ppGpp

Assembly of DksA and ppGpp to RNAP triggers conformational changes in RNAP and DksA

Rifampin resistant and compensatory mutations in bacterial RNA polymerase

Structural basis of transcription initiation by bacterial RNA polymerase

Archaeal RNA polymerase transcription

Installation of FEI Titan Krios microscope at Penn State University main (UP) campus (May – September, 2017)