Integrating vectors for genetic studies in the rare Actinomycete Amycolatopsis marina

Hong Gao, Buvani Murugesan, Janina Hobbach, Stephanie Evans, Marshall Stark, Margaret Smith

Research output: Contribution to journalArticlepeer-review

136 Downloads (Pure)


Background: Few natural product pathways from rare Actinomycetes have been studied due to the difficulty in applying molecular approaches in these genetically intractable organisms. In this study, we sought to identify more integrating vectors, using phage int/attP loci, that would efficiently integrate site-specifically in the rare Actinomycete, Amycolatopsis marina DSM45569.
Results: Analysis of the genome of A. marina DSM45569 indicated the presence of attB-like sequences for TG1 and R4 integrases. The TG1 and R4 attBs were active in in vitro recombination assays with their cognate purified integrases and attP loci. Integrating vectors containing either the TG1 or R4 int/attP loci yielded exconjugants in conjugation assays from Escherichia coli to A. marina DSM45569. Site-specific recombination of the plasmids into the host TG1 or R4 attB sites was confirmed by sequencing.
Conclusions: The homologous TG1 and R4 attB sites within the genus Amycolatopsis have been identified. The results indicate that vectors based on TG1 and R4 integrases could be widely applicable in this genus.
Original languageEnglish
Article number32
JournalBMC Biotechnology
Issue number1
Early online date4 Jun 2019
Publication statusPublished - 4 Jun 2019


Dive into the research topics of 'Integrating vectors for genetic studies in the rare Actinomycete Amycolatopsis marina'. Together they form a unique fingerprint.

Cite this