Anti-MGMT Antibody, clone MT3.1

O6-Methylguanine-DNA Methyltransferase (MGMT) is a ubiquitous DNA repair protein that removes O6-alkyl-guanine, primarily O6 methylguanine lesions from damaged DNA. It is a major contributor to cellular protection from the mutagenic, carcinogenic, and cytotoxic effects of DNA alkylation. The mechanism of MGMT action is based on the transfer of the alkyl group from the DNA to a unique acceptor cysteine residue in the protein, forming a stable thioether linkage. MGMT is frequently classified as a suicide protein. The repair capacity for O6- methylguanine is dependent on the number of MGMT molecules in the cell. There is a correlation between the occurrence of cancer in various tissues and the lack of the MGMT enzyme. High levels of MGMT result in reduced tumor events and resistance of tumors to alkylating agents.

MGMT is a 22 kDa DNA repair protein that is present in all normal tissues; however, in a subset of human tumours MGMT is completely absent. Thus, antibody MAB16200 may be helpful in utilizing MGMT as a marker of malignant or pre-malignant cells. Because MGMT repairs the potentially cytotoxic antitumour lesions induced in DNA by certain cancer chemotherapeutic alkylating agents (e.g. BCNU, CCNU, DTIC, procarbazinc, temozolomide), tumours lacking or having low levels of MGMT will predictably be responsive to drug therapy. Conversely, tumours with high MGMT levels will likely be drug resistant. The MGMT antibody may also be used to gauge the effectiveness of MGMT modulators, such as O-6-benzylguanine, which lead to rapid degradation of the inactivated protein.

Made against recombinant human MGMT (O-6-methylguanine-DNA methyltransferase) expressed in E. coli.

Flow Cytometry:
An independent laboratory used a previous lot on flow cytometry (Gerson, 1996).

Immunoprecipitation:
A previous lot of this antibody was used on Immunoprecipitation.

Immunohistochemistry:
A previous lot of this antibody was used on paraffin embedded sections.

Optimal working dilutions must be determined by end user.

Research Category
Epigenetics & Nuclear Function

Research Sub Category
Cell Cycle, DNA Replication & Repair

Use Anti-MGMT Antibody, clone MT3.1 (mouse monoclonal antibody) validated in FC, ICC,IHC(P), IP, WB to detect MGMT also known as O-6-methylguanine-DNA Methyltransferase, Methylated-DNA--Protein-cysteine Methyltransferase.

Useful for detection of MGMT in human tissues, tumours, cells, or xenograft lines. Gives weak cross-reactivity with MGMT from mouse, hamster and rat cells.

Evaluated by Western Blot on Jurkat lysates.

Western Blot Analysis:
1:500 dilution of this antibody detected MGMT on 10 µg of Jurkat lysates.

22-25 kDa

Protein A purified

Format: Purified

Purified mouse monoclonal IgG1 in buffer containing 0.02 M PB, pH 7.6, 0.25 M NaCl containing 0.1% sodium azide.

Stable for 1 year at 2-8ºC from date of receipt.

Control
Positive Control: Tonsil tissue, HeLa cells, CEM-CCRF cells.
Negative Control: TK6 cells.

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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