Complete closed genome sequences of a Mannheimia haemolytica serotype A1 leukotoxin deletion mutant and its wild type parent strain

Mannheimia haemolytica is a bacterial pathogen associated with bovine respiratory disease complex (BRDC). It secretes a leukotoxin that binds to CD18 on leukocyte membranes and causes acute inflammation and lung injury characteristic of BRDC. We report the complete closed genome sequences of a leukotoxin mutant and its parent strain.