Topoisomerase I Rabbit mAb [GR5Q]Cat NO.: A81919

Protein names ：TOP1,TOP1_HUMAN,DNA topoisomerase 1

UniProtID ：P11387

MASS(da) ：90,726

MW(kDa) ：95 kDa

Form ：Liquid

Purification ：Protein A purification

Host ：Rabbit

Isotype ：IgG

sensitivity ：Endogenous

Reactivity ：Human,Mouse,Rat

• ApplicationDilution
• 免疫印迹(WB)1:1000-2000
• 免疫荧光(ICC/IF)1:100,
• The optimal dilutions should be determined by the end user

Specificity ：Antibody is produced by immunizing animals with a synthetic peptide of Human Topoisomerase I.

Storage ：Antibody store in 10 mM PBS, 0.5mg/ml BSA, 50% glycerol. Shipped at 4°C. Store at-20°C or -80°C. Products are valid for one natural year of receipt.Avoid repeated freeze / thaw cycles.

WB Positive detected ：MCF-7 cells lyastes

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 (By similarity). Regulates the alternative splicing of tissue factor (F3) pre-mRNA in endothelial cells. Involved in the circadian transcription of the core circadian clock component ARNTL/BMAL1 by altering the chromatin structure around the ROR response elements (ROREs) on the ARNTL/BMAL1 promoter..

Tissue specificity ：Endothelial cells..

Subcellular locationi ：Nucleus, nucleolus. Nucleus, nucleoplasm.

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 1% w/v BSA, 1X TBST at 4°C overnight.