T9069
Topoisomerase I human
buffered aqueous glycerol solution, ≥2 units/μL
Sinônimo(s):
DNA Topoisomerase I
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About This Item
Número MDL:
Código UNSPSC:
12352204
NACRES:
NA.54
Produtos recomendados
recombinante
expressed in baculovirus
Nível de qualidade
forma
buffered aqueous glycerol solution
peso molecular
100 kDa
concentração
≥2 units/μL
nº de adesão UniProt
temperatura de armazenamento
−70°C
Informações sobre genes
human ... TOP1(7150)
Descrição geral
Topoisomerase I (TOP1) is mapped to human chromosome 20q12. TOP1 is a 91 kDa type IB enzyme and consists of N-terminal highly charged domain, a core, linker domain and a C-terminal catalytic domain with Tyr-723 active site residue.
Aplicação
Topoisomerase I has been used in a study to assess implications for the regulation of HIV-1 replication. Topoisomerase I has also been used in a study to investigate the tumor suppressor protein kinase Chk2 is a mediator of anoikis of intestinal epithelial cells.
Topoisomerase I human has been used for Topoisomerase I assay for screening inhibitors.
Ações bioquímicas/fisiológicas
Topoisomerase I human (TOP1) interacts with DNA by wrapping and takes a bi-lobed conformation. TOPI is essential for normal development and transcriptional regulation. Variants in the TOP1 gene is observed in patients with colorectal cancer.
Topoisomerase I relaxes supercoiled DNA molecules. The enzyme initiates transient breakages and rejoins of phosphodiester bonds in superhelical turns of closed-circular DNA. Enzyme activity is independent of right- and left-handed superhelices.
Definição da unidade
One unit will relax 0.25 μg of supercoiled plasmid DNA in 30 minutes at pH 7.9 at 37 °C.
forma física
Solution containing 20 mM sodium phosphate, pH 7.4, 300 mM NaCl, 50 μg/mL BSA, 50% glycerol, and between 25-100 mM imidazole (concentration will be lot dependent).
Palavra indicadora
Danger
Frases de perigo
Declarações de precaução
Classificações de perigo
Repr. 1B
Código de classe de armazenamento
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
Classe de risco de água (WGK)
WGK 1
Ponto de fulgor (°F)
Not applicable
Ponto de fulgor (°C)
Not applicable
Certificados de análise (COA)
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Encontre a documentação dos produtos que você adquiriu recentemente na biblioteca de documentos.
Novel insights into catalytic mechanism from a crystal structure of human topoisomerase I in complex with DNA
Redinbo MR, et al.
Biochemistry, 39(23), 6832-6840 (2000)
Binding and dissociation of human topoisomerase I with hairpin-loop RNAs: implications for the regulation of HIV-1 replication
Takahashi H, Sawa H, Hasegawa H,
Biochemical and Biophysical Research Communications, 297(3), 593-599 (2012)
M Lisby et al.
The Journal of biological chemistry, 276(23), 20220-20227 (2001-04-03)
All eukaryotic forms of DNA topoisomerase I contain an extensive and highly charged N-terminal domain. This domain contains several nuclear localization sequences and is essential for in vivo function of the enzyme. However, so far no direct function of the
Molecular Networking Reveals Two Distinct Chemotypes in Pyrroloiminoquinone-Producing Tsitsikamma favus Sponges
Kalinski JCJ, et al.
Marine drugs, 17(1), 60-60 (2019)
Mechanisms of topoisomerase I (TOP1) gene copy number increase in a stage III colorectal cancer patient cohort
Smith DH, et al.
Testing, 8(4), e60613-e60613 (2013)
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