추천 제품
재조합
expressed in baculovirus
Quality Level
양식
buffered aqueous glycerol solution
분자량
100 kDa
농도
≥2 units/μL
UniProt 수납 번호
저장 온도
−70°C
유전자 정보
human ... TOP1(7150)
일반 설명
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.
애플리케이션
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.
생화학적/생리학적 작용
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.
단위 정의
One unit will relax 0.25 μg of supercoiled plasmid DNA in 30 minutes at pH 7.9 at 37 °C.
물리적 형태
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).
신호어
Danger
유해 및 위험 성명서
예방조치 성명서
Hazard Classifications
Repr. 1B
Storage Class Code
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK
WGK 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
가장 최신 버전 중 하나를 선택하세요:
시험 성적서(COA)
Lot/Batch Number
Topoisomerase I in human disease pathogenesis and treatments
Li M and Liu Y
Genomics, Proteomics & Bioinformatics, 14(3), 166-171 (2016)
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)
Molecular Networking Reveals Two Distinct Chemotypes in Pyrroloiminoquinone-Producing Tsitsikamma favus Sponges
Kalinski JCJ, et al.
Marine drugs, 17(1), 60-60 (2019)
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)
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)
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