prospec

TOP1 Human

  • Name
  • Description
  • Pricings
  • Quantity
  • TOP1 Human
  • DNA Topoisomerase-I Human Recombinant
  • Shipped with Ice Packs

Catalogue number

ENZ-306

Synonyms

DNA topoisomerase 1, EC 5.99.1.2, DNA topoisomerase I, TOP1, Scl-70.

Introduction

DNA toposisomerase I is a key nuclear enzyme that interconverts supercoiled DNA to the required topological conformations for normal DNA replication and transcription. This enzyme is the target antigen for the so-called Scl-70 autoantibodies. Scl-70 antibodies are a specific marker in Scleroderma patients (specificity 98-100%) and are associated with the presence of diffuse skin involvement and pulmonary fibrosis.
In human tissues the DNA topoisomerase I is initially synthesized as a protein with 100 kDa molecular weight. Most of this precursor is then proteolytically processed to a species with 70 kDa molecular weight from which the Scl-70 antigen has derived its name.

Description

DNA Topoisomerase-I Human Recombinant produced in SF9 is a glycosylated, polypeptide chain having a molecular mass of 91,576 Dalton (excluding glycosilation) 102 kDa total mass. The TOP1 is expressed with a -6xHis tag and purified by proprietary chromatographic techniques.

Source

Sf9 insect cells.

Physical Appearance

Sterile Filtered clear solution.

Formulation

TOP1 is supplied in 16mM HEPES buffer pH-7.5, 400mM sodium chloride, and 20% glycerol.

Purity

Greater than 95% as determined by SDS-PAGE.

Stability

Store at 4°C if entire vial will be used within 2-4 weeks. 
Store, frozen at -20°C for longer periods of time. 
Avoid multiple freeze-thaw cycles.

Safety Data Sheet

Usage

Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Back to Top