Human TopBP1 Antibody
R&D Systems, part of Bio-Techne | Catalog # AF7120
Key Product Details
Species Reactivity
Human
Applications
Immunohistochemistry
Label
Unconjugated
Antibody Source
Polyclonal Sheep IgG
Product Specifications
Immunogen
E. coli-derived recombinant human TopBP1
Met88-Asp194
Accession # Q92547
Met88-Asp194
Accession # Q92547
Specificity
Detects human TopBP1 in direct ELISAs.
Clonality
Polyclonal
Host
Sheep
Isotype
IgG
Scientific Data Images for Human TopBP1 Antibody
TopBP1 in Human Breast.
TopBP1 was detected in immersion fixed paraffin-embedded sections of human breast using Sheep Anti-Human TopBP1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7120) at 3 µg/mL overnight at 4 °C. Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counterstained with hematoxylin (blue). Specific staining was localized to epithelial cells. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.Applications for Human TopBP1 Antibody
Application
Recommended Usage
Immunohistochemistry
5-15 µg/mL
Sample: Immersion fixed paraffin-embedded sections of human breast
Sample: Immersion fixed paraffin-embedded sections of human breast
Formulation, Preparation, and Storage
Purification
Antigen Affinity-purified
Reconstitution
Sterile PBS to a final concentration of 0.2 mg/mL. For liquid material, refer to CoA for concentration.
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: TopBP1
TopBP1 (DNA topoisomerase 2-binding protein 1) is a 175-180 kDa member of a critical DNA replication repair complex. It is widely expressed, and appears to serve as an intermediary in DNA replication. When a replication fork is stalled during S phase, DNA continues to unwind ahead of the stall. This becomes associated with RPA, which is essential for ATR and subsequent Chk1 activation. TopBP1 is key to ATR activation, and appears to first bind to DNA:pol-alpha, followed by a 9-1-1 complex and Rad17 interaction that leads to ATR stimulation. Human TopBP1 is 1522 amino acids (aa) in length. It contains eight BRCT domains (aa 101-1486) that interact with distinct binding partners. BRCT1 and 2 binds to Rad9 (aa 101-294), while BRCT 6 and 7 are involved in ATR activation. There are 12 utilized phosphorylation sites and two nuclear localization signals. Three isoform variants have been described. One contains an alternative start site at Met88, a second shows an 18 aa substitution for aa 1198-1522, and a third possesses a six aa substitution for aa 1292-1522. Over aa 88-194, human TopBP1 shares 88% aa identity with mouse TopBP1.
Long Name
DNA Topoisomerase II Binding Protein 1
Alternate Names
TOP2BP1
Gene Symbol
TOPBP1
UniProt
Additional TopBP1 Products
Product Documents for Human TopBP1 Antibody
Product Specific Notices for Human TopBP1 Antibody
For research use only
Loading...
Loading...
Loading...
Loading...