Ravatn R, Studer S, Zehnder A, van der Meer J. Int-B13, an unusual site-specific recombinase of the bacteriophage P4 integrase family, is responsible for chromosomal insertion of the 105-kilobase clc element of Pseudomonas sp. Strain B13. J Bacteriol. 1998;180:5505-14 pubmed
..The integration process could be demonstrated in RecA-deficient Escherichia coli with two recombinant plasmids, one carrying the int-B13 gene and the attP site and the other carrying the attB site of Pseudomonas putida F1. ..
Sentchilo V, Zehnder A, van der Meer J. Characterization of two alternative promoters for integrase expression in the clc genomic island of Pseudomonas sp. strain B13. Mol Microbiol. 2003;49:93-104 pubmed
..The activator mutants mapped in an open reading frame (ORF) encoding a 175 amino acid protein without any significant similarity to functionally characterized proteins in the databases. ..