Project description:Streptomyces sp. M7 has demonstrated ability to remove lindane from culture media and soils. In this study, we used MS-based label-free quantitative proteomic to understand lindane degradation and its metabolic context in Streptomyces sp. M7. We identified the proteins involved in the up-stream degradation pathway. Our results demonstrated that mineralization of lindane is feasible since proteins from an unusual down-stream degradation pathway were also identified. Degradative steps were supported by an active catabolism that supplied energy and reducing equivalents in the form of NADPH. This is the first study in which degradation steps of an organochlorine compound and metabolic context are elucidate in a biotechnological genus as Streptomyces. These results serve as basement to study other degradative actinobacteria and to improve the degradation processes of Streptomyces sp. M7.
Project description:This study compared the genome of Streptomyces rimosus rimosus against that of Streptomyces coelicolor. It also compared 4 strains with changes in oxytetracycline production and derived from G7, the type strain, against G7. Keywords: Comparative genomic hybridization
Project description:This study aimed to investigate the variations in the protein composition of Streptomyces sp. PU10 when cultivated with either Impranil (polyestere-polyurethane) or glucose as the carbon source. We analyzed both the intracellular and extracellular protein fractions to gain insights into the intricate processes involving PU degradation, intermediate metabolic pathways in PU degradation, and the connection between primary and secondary metabolism within Streptomyces sp. PU10.
Project description:Borodina2005 - Genome-scale metabolic network
of Streptomyces coelicolor (iIB711)
This model is described in the article:
Genome-scale analysis of
Streptomyces coelicolor A3(2) metabolism.
Borodina I, Krabben P, Nielsen
J.
Genome Res. 2005 Jun; 15(6):
820-829
Abstract:
Streptomyces are filamentous soil bacteria that produce more
than half of the known microbial antibiotics. We present the
first genome-scale metabolic model of a representative of this
group--Streptomyces coelicolor A3(2). The metabolism
reconstruction was based on annotated genes, physiological and
biochemical information. The stoichiometric model includes 819
biochemical conversions and 152 transport reactions, accounting
for a total of 971 reactions. Of the reactions in the network,
700 are unique, while the rest are iso-reactions. The network
comprises 500 metabolites. A total of 711 open reading frames
(ORFs) were included in the model, which corresponds to 13% of
the ORFs with assigned function in the S. coelicolor A3(2)
genome. In a comparative analysis with the Streptomyces
avermitilis genome, we showed that the metabolic genes are
highly conserved between these species and therefore the model
is suitable for use with other Streptomycetes. Flux balance
analysis was applied for studies of the reconstructed metabolic
network and to assess its metabolic capabilities for growth and
polyketides production. The model predictions of wild-type and
mutants' growth on different carbon and nitrogen sources agreed
with the experimental data in most cases. We estimated the
impact of each reaction knockout on the growth of the in silico
strain on 62 carbon sources and two nitrogen sources, thereby
identifying the "core" of the essential reactions. We also
illustrated how reconstruction of a metabolic network at the
genome level can be used to fill gaps in genome annotation.
This model is hosted on
BioModels Database
and identified by:
MODEL1507180049.
To cite BioModels Database, please use:
BioModels Database:
An enhanced, curated and annotated resource for published
quantitative kinetic models.
To the extent possible under law, all copyright and related or
neighbouring rights to this encoded model have been dedicated to
the public domain worldwide. Please refer to
CC0
Public Domain Dedication for more information.