AB245431

Anti-Topoisomerase I抗体

Name: Topoisomerase I抗体 (ab245431)| Abcam中文官网
Brand: Abcam Limited
SKU: AB245431
Price: 4863 CNY
Availability: InStock

Anti-Topoisomerase I antibody

Be the first to review this product! Submit a review

(1 Publication)

Rabbit Polyclonal Topoisomerase I antibody. Suitable for IP, WB and reacts with Human samples. Cited in 1 publication. Immunogen corresponding to Synthetic Peptide within Human TOP1 aa 100-150.

查看别名

DNA topoisomerase 1, DNA topoisomerase I, TOP1

2 Images

Supplier Data

Immunoprecipitation - Anti-Topoisomerase I antibody (AB245431)

Topoisomerase I was immunoprecipitated from HeLa (Human epithelial cell line from cervix adenocarcinoma) whole cell lysate (1 mg per IP reaction; 20% of IP loaded).

ab245431 used for IP at 3 μg/mg lysate. For WB 0.4 μg/ml.

Lane 1 : ab245431 IP in HeLa whole cell lysate.
Lane 2 : Control IgG in HeLa whole cell lysate.

Chemiluminescence detection : 10 seconds.

All lanes:

Immunoprecipitation - Anti-Topoisomerase I antibody (ab245431)

Predicted band size: 91 kDa

false

Supplier Data

Western blot - Anti-Topoisomerase I antibody (AB245431)

All lanes:

Western blot - Anti-Topoisomerase I antibody (ab245431) at 0.04 µg/mL

Lane 1:

HeLa (Human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 50 µg

Lane 2:

HeLa whole cell lysate at 15 µg

Lane 3:

HeLa whole cell lysate at 5 µg

Lane 4:

HEK-293T (Human epithelial cell line from embryonic kidney transformed with large T antigen) whole cell lysate at 50 µg

Predicted band size: 91 kDa

false

Exposure time: 10s

关键信息

宿主种属

Rabbit

克隆

Polyclonal

亚型

IgG

不含载体蛋白

反应种属

Human

应用

IP, WB

applications

免疫原

Synthetic Peptide within Human TOP1 aa 100-150. The exact immunogen used to generate this antibody is proprietary information.

P11387

style

left-column

反应性数据

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "2-5 µg/mg of lysate", "IP-species-notes": "<p></p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/2000 - 1/10000", "WB-species-notes": "<p></p>" }, "Rat": { "IP-species-checked": "predicted", "IP-species-dilution-info": "", "IP-species-notes": "", "WB-species-checked": "predicted", "WB-species-dilution-info": "", "WB-species-notes": "" } } }

style

left-column

style

left-column

性能和储存信息

形式

Liquid

纯化工艺

Affinity purification Immunogen

纯化说明

ab245431 was affinity purified using an epitope specific to Topoisomerase I immobilized on solid support.

存储溶液

pH: 6.8 - 7.4 Preservative: 0.09% Sodium azide Constituents: Tris buffered saline, 0.1% BSA

运输条件

Blue Ice

分装信息

Upon delivery aliquot

储存信息

Avoid freeze / thaw cycle

style

left-column

补充信息

This supplementary information is collated from multiple sources and compiled automatically.

Topoisomerase I also known as DNA topoisomerase I or Topo I is an important enzyme in the unwinding of the DNA double helix during processes such as replication and transcription. This enzyme has a molecular mass of approximately 91 kDa and functions by creating transient single-strand breaks in the DNA allowing relaxation of supercoils. Topoisomerase I is widely expressed in both proliferating and non-proliferating cells with higher levels seen in tissues with rapid cell division like the gastrointestinal tract and some immune cells.

Biological function summary

Topoisomerase I plays a significant role in the modulation of DNA topology ensuring proper chromosomal functions during cellular proliferation. It serves as a single polypeptide and does not require a companion for its activity unlike other topoisomerases that may function in complexes. The enzyme’s ability to relieve torsional stress in DNA is essential for maintaining genomic stability and facilitating the smooth progression of the replication fork.

Pathways

Topoisomerase I is vital for DNA replication and transcription processes. It works in concert with other proteins such as helicases and ligases to ensure efficient unwinding and rewinding of DNA strands. The enzyme participates in the DNA damage response pathway where it interacts with proteins like PARP1 to coordinate repair processes. Its action is important in both the S phase of the cell cycle where DNA synthesis occurs and in the G0 phase where cells are in a quiescent state.

Topoisomerase I is heavily implicated in oncogenesis with significant associations to colorectal and ovarian cancers. Its heightened activity can lead to genomic instability a hallmark of cancer development. The enzyme also relates to chemotherapeutic resistance where mutations in topoisomerase I lead to reduced drug efficacy. Furthermore inhibitors targeting topoisomerase I such as camptothecin-based drugs exploit its role in cancer aiming to induce DNA damage selectively in rapidly dividing cells. Connections to other proteins like BRCA1 are apparent in these pathways as they both contribute to the DNA repair processes in cells.

style

left-column

style

left-column

产品实验方案

For this product, it's our understanding that no specific protocols are required. You can visit:

Visit the General protocols
Visit the Troubleshooting

style

left-column

靶点信息

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 BMAL1 by altering the chromatin structure around the ROR response elements (ROREs) on the BMAL1 promoter.

See full target information TOP1

style

left-column

文献 (1)

Recent publications for all applications. Explore the full list and refine your search

Cancer management and research 13:2057-2069 PubMed33664593

2021

Sevoflurane Limits Glioma Progression by Regulating Cell Proliferation, Apoptosis, Migration, and Invasion via miR-218-5p/DEK/β-Catenin Axis in Glioma.

Applications

Unspecified application

Species

Unspecified reactive species

Yingying Qi,Lina Guo,Yanchao Liu,Tonghang Zhao,Xianwen Liu,Yang Zhang

View all publications

style

left-column

style

left-column

style

right-column

Abcam Product Promise

我们致力于为您的研究提供高质量的试剂，为您科研的每一步提供支持。若我们的产品未能达到预期性能，我们向您提供 Abcam Product Promise 保障。

详情请参阅我们的条款与条件。

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

For licensing inquiries, please contact partnerships@abcam.com

Anti-Topoisomerase I抗体

Anti-Topoisomerase I antibody

Immunoprecipitation - Anti-Topoisomerase I antibody (AB245431)

Western blot - Anti-Topoisomerase I antibody (AB245431)