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Replacement of UTEX3055_pg2263-pg2266 with a kanamycin resistance cassette (aphI) leads to a loss of phototaxis. The site of Tn5 insertion in the initial phototaxis mutant is marked by an asterisk. Complementation with the full four-gene operon restores phototaxis. Introduction of UTEX3055_pg2263-2266 is not sufficient to restore a phototaxis phenotype to PCC 7942.
