Recombinant Ochrobactrum anthropi Large-conductance mechanosensitive channel (mscL)

General Information on Ochrobactrum anthropi

Ochrobactrum species are non-enteric, Gram-negative organisms closely related to the Brucella genus . Ochrobactrum anthropi is a Gram-negative bacillus, non-fermenting, an obligate aerobe, flagellate, oxidase-positive, and indole-negative .

• Habitat O. anthropi thrives in the rhizosphere but does not multiply in host cells . It can be isolated from soil, water, human wastes, fluids, and medical devices .

• Clinical Significance O. anthropi is an opportunistic pathogen, causing infections in severely ill or immunocompromised patients, often associated with indwelling catheterization . Infections include bacteremia, brain empyema, endophthalmitis, septic shock, septic arthritis, endocarditis, and retropharyngeal abscess .

• Antibiotic Resistance O. anthropi exhibits inherent resistance to beta-lactams, making empirical treatment challenging . It is often susceptible to ciprofloxacin, aminoglycosides, trimethoprim-sulfamethoxazole, and carbapenems .

Identification of Ochrobactrum anthropi

Due to its phenotypic similarities with other microorganisms, microbiological characterization of O. anthropi can be difficult, leading to potential misdiagnoses .

• Biochemical Identification Traditional biochemical tests may lead to misidentification .

• Molecular Identification 16S ribosomal gene sequencing can accurately identify O. anthropi .

• MALDI-TOF MS MALDI-TOF MS is increasingly used for Ochrobactrum identification in clinical settings, offering high similarity among isolates and accuracy in identification .

Mechanosensitive Channels (MscL)

Mechanosensitive channels (MscLs) are membrane proteins that respond to mechanical stimuli, such as changes in membrane tension. MscLs are found in various organisms, including bacteria, and play a crucial role in maintaining cellular homeostasis by allowing the passage of ions and small molecules across the cell membrane in response to mechanical stress.

Recombinant MscL

Recombinant MscL is produced using genetic engineering techniques, where the gene encoding the MscL protein from Ochrobactrum anthropi is inserted into a host organism (e.g., E. coli) for expression and purification. This allows researchers to study the structure, function, and regulation of the channel in a controlled environment.

Significance of Recombinant Ochrobactrum anthropi MscL

The study of MscL from Ochrobactrum anthropi and other bacteria has provided insights into the mechanisms of mechanosensation and the role of these channels in bacterial survival and adaptation. MscLs are potential targets for developing new antimicrobial agents.