This TOP1 Sandwich ELISA Kit is an in-vitro enzyme-linked immunosorbent assay for the measurement of samples in mouse tissue homogenates, cell lysates or other biological fluids..
Applications
ELISA
Reactivity
Mouse
Sensitivity
0.055ng/mL
Detection Limit
0.156-10ng/mL
Note
STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS.
Product Properties
Storage Instruction
Store the unopened kit in the fridge at 2-8°C for up to 6 months. Once opened store individual kit contents according to components table provided with the kit.
tissue homogenates, cell lysates or other biological fluids.
Additional Info
Tissue Specificity
Post Translational Modifications
Sumoylated. Lys-119 is the main site of sumoylation. Sumoylation plays a role in partitioning TOP1 between nucleoli and nucleoplasm. Levels are dramatically increased on camptothecin (CPT) treatment. Phosphorylation at Ser-508 by CK2 increases binding to supercoiled DNA and sensitivity to camptothecin.
Function
Releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(3'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 5'-OH DNA strand. The free DNA strand then rotates around the intact phosphodiester bond on the opposing strand, thus removing DNA supercoils. Finally, in the religation step, the DNA 5'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone. Regulates the alternative splicing of tissue factor (F3) pre-mRNA in endothelial cells. Involved in the circadian transcription of the core circadian clock component BMAL1 by altering the chromatin structure around the ROR response elements (ROREs) on the BMAL1 promoter.
NucleusNucleolusNucleoplasmDiffuse Nuclear Localization With Some Enrichment In NucleoliOn Cpt TreatmentCleared From Nucleoli Into NucleoplasmSumoylated Forms Found In Both Nucleoplasm And Nucleoli
Alternative ELISA Names
Dna Topoisomerase 1 ELISA kitDna Topoisomerase I ELISA kitTop1 ELISA kitTop-1 ELISA kit
