Topoisomerase I Antibody

Catalog Number:

48978

Amount:

100μg

Price:

$319

Swiss-Prot No:

Swiss-Prot#:P11387

Form of Antibody:

1*TBS (pH7.4), 1%BSA, 40%Glycerol. Preservative: 0.05% Sodium Azide.

Storage/Stability:

Immunogen:

recombinant protein

Purification:

ProA affinity purified

Specificity/Sensitivity:

Applications:

WB, ICC/IF, IHC, FC

Background:

DNA topoisomerases play essential roles in many DNA metabolic processes including DNA repair. Topoisomerases can introduce DNA damage upon exposure to drugs that stabilize the covalent protein-DNA intermediate of the topoisomerase reaction. Lesions in DNA are also able to trap topoisomerase-DNA intermediates. DNA topoisomerase I (Top1) catalyzes the relaxation of supercoiled DNA by a mechanism of transient DNA strand cleavage characterized by the formation of a phosphotyrosyl bond between the DNA end and active site tyrosine. The antitumor agent camptothecin (CPT) reversibly stabilizes the covalent enzyme-DNA intermediate by inhibiting DNA religation. When a replication fork collides with a DNA Top1 cleavage complex, the covalently bound enzyme must be removed from the DNA 3' end before recombination-dependent replication restart. The tyrosyl-DNA phosphodiesterase Tdp1 and the structure-specific endonuclease Rad1-Rad10 function as primary alternative pathways of Top1 repair in Saccharomyces cerevisiae. In the budding yeast S. cerevisiae, DNA topoisomerases I and II can functionally substitute for each other in removing positive and negative DNA supercoils.

References:

appl_detail:

WB: 1:1,000-5,000
IHC: 1:50-1:200
ICC: 1:50-1:500

FC: 1:50-1:100

Datasheet PDF