Abcam, ab25845, Anti-TetR antibody

Size: 100µg
Rabbit Polyclonal TETR2 antibody. Suitable for WB and reacts with Escherichia coli samples. Cited in 3 publications.
Key facts
Host species:Rabbit,
Clonality:Polyclonal,
Isotype:IgG,
Carrier free:No,
Reacts with:Escherichia coli,
Applications:WBSee reactivity dataSee the reactivity data table below for information on validated species and application combinations.,
Specificity:This antibody detects Tet repressor protein. The Tet repressor protein regulates transcription of a family of tetracycline resistance determinants in Gram-negative bacteria. The Tet system is the most widely used regulatory system for conditional gene expression in eukaryotic cells. TetR can be used for that purpose in some organisms without further modifications. In mammals and in a large variety of other organisms, however, eukaryotic transcriptional activator or repressor domains are fused to TetR to turn it into an efficient regulator.

Properties and Storage Information:
Form-Liquid, Purification technique-Affinity purification Immunogen, Storage buffer-pH: 7.4Preservative: 0.02% Sodium azideConstituents: PBS, 0.1% BSA, Shipped at conditions-Blue Ice, Appropriate short-term storage duration-1-2 weeks, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions--20°C, Aliquoting information-Upon delivery aliquot, Storage information-Avoid freeze / thaw cycle

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
TetR or tetracycline repressor protein is a regulatory protein that controls the expression of genes involved in resistance to tetracycline. It weighs about 23 kDa. TetR functions as a homodimer binding to substrate DNA sequences to suppress transcription. This repression occurs by binding to the operator sequences of the tetracycline-inducible promoter blocking the progression of RNA polymerase along the DNA strand. TetR mainly operates within the bacterial species Escherichia coli serving as a well-characterized model for gene regulation in prokaryotes.
Biological function summary
TetR plays a critical role in antibiotic resistance mechanisms. When tetracycline is not present TetR maintains its binding to the operator effectively silencing the expression of downstream genes responsible for drug efflux. Upon binding tetracycline the protein undergoes a conformational change that releases the operator sequence allowing the transcription of resistance genes. TetR forms a complex through dimerization which is essential for its function as it binds the operator in pairs.
Pathways
TetR is integral to the regulation of the tetracycline resistance pathway. It is part of a classic feedback loop that includes TetA a protein involved in tetracycline efflux out of the cell. The TetR-TetA regulatory system finely tunes bacterial response to the presence or absence of tetracycline ensuring survival in antibiotic environments. Its interaction with the TetA protein highlights its essential role in regulating efflux pump expression during antibiotic exposure.
TetR connects primarily to antibiotic resistance a major issue in bacterial infections. The misuse of tetracycline in clinical settings emphasizes the significance of TetR in developing tetracycline-resistant bacterial strains. This protein's connection to the TetA efflux pump directly affects the efficacy of tetracycline as an antibacterial treatment. Understanding the TetR regulation mechanism could lead to new therapeutic strategies in combating drug-resistant pathogens particularly methicillin-resistant Staphylococcus aureus (MRSA).