TRANSCRIPTION REGULATOR, TETR, TRANSCRIPTIONAL REGULATOR, STRUCTURAL GENOMICS, PSI-2, PROTEIN STRUCTURE INITIATIVE, MIDWEST CENTER FOR STRUCTURAL GENOMICS, MCSG, DNA-BINDING, TRANSCRIPTION, TRANSCRIPTION REGULATION STRUCTURE OF A PUTATIVE TETR TRANSCRIPTIONAL REGULATOR (PA3699) FROM PSEUDOMONAS AERUGINOSA PA01 3KKD