normalize 1 taxa_covariation 1 min_score 0 name Stephen Nayfach plot 1 ags_covariation 1 aligner BLAST job_name Tryptophanase public 1 min_cov 0.70 max_evalue 1e-25 mode multi-gene pheno_covariation 1 email snayfach@gmail.com min_pid 50