TOP1-H01A
Family ：
Protease and Enzyme
Catalog No. ：
TOP1-H01A
Protein ：
TOP1
UniProt ：
P11387
Organism ：
Homo sapiens
Expression system ：
Insect cell
Tag ：
His
Sequence ：
K175-A659
Assay ：
Structure ：
Inquiry ：
是
Symbol/Gene Name: TOP1
Alias: DNA topoisomerase 1,DNA topoisomerase I
Uniprot: P11387
Background: 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.
Construct: 8His-TEV-(G)-TOP1(K175-A659)
Expression Host: Insect cell
Purity: 90%
Formulation: 50 mM Tris-HCl (pH7.5), 200 mM NaCl, 20% glycerol
Supplied as sterile
Please contact us for any concerns or special requirements.
Please refer to the specific buffer information in the hard copy of CoA.
Endotoxin:
< 0.01 EU per μg of the protein
Shipping:
Liquid. It is shipped out with blue ice.
Stability & Storage:
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Recombinant protein