Marineo S, Lecat E, Cusimano MG, Giardina A, Di Caro V, Puglia AM. Identification of SCP2165, a new SCP2-derived plasmid of Streptomyces coelicolor A3(2).
Lett Appl Microbiol 2005;
41:350-4. [PMID:
16162143 DOI:
10.1111/j.1472-765x.2005.01739.x]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS
Characterization of SCP2165, a plasmid identified in the Gram-positive bacterium Streptomyces coelicolor A3(2).
METHODS AND RESULTS
Pulsed-field gel electrophoresis (PFGE) of mycelia of a S. coelicolor strain embedded in low melting agarose revealed the presence of a plasmid. Restriction enzyme mapping and sequence analysis of a 2.1 kb fragment revealed that this plasmid could be SCP2. SCP2 and its spontaneous derivative SCP2* are self-transmissible plasmids and have chromosome mobilizing ability (c.m.a.). SCP2* has a c. 1000-fold increased c.m.a. compared with SCP2. Interestingly the plasmid, named SCP2165, shows a c.m.a. from 5x10(-2) to 1x10(-1) which is 50-100-fold higher than that described for crosses involving SCP2*.
CONCLUSIONS
SCP2165 is a SCP2 derivative plasmid with the highest c.m.a. so far described for SCP2 derivative plasmids. PFGE, under conditions we used, seems to be a fast way to identify large circular plasmids in Streptomyces strains.
SIGNIFICANCE AND IMPACT OF THE STUDY
Further knowledge of the SCP2 family may allow the construction of improved SCP2-derived cloning vectors. SCP2165 could be a potential tool for conjugational transfer of gene clusters between different Streptomyces species.
Collapse