lambdapMu507 (ATCC 37289) is a helper for lambdaplacMu1.
A plaque-forming lambda vector for in vitro construction of lacZ fusion proteins.
References
Bremer E, et al. Alpha placMu: a transposable derivate of bacteriophage lambda for creating lacZ protein fusions in a single step. J. Bacteriol. 158: 1084-1093, 1984. PubMed: 6327627