Ki-67 Rabbit Monoclonal Antibody(ARA786)

Key features and details

  • Target: Ki-67
  • Source/Host: Rabbit
  • Reactivity: Human
  • Clonality: Monoclonal
  • Applications: IHC,FC,IF/ICC
  • Conjugation: Unconjugated
  • Storage: at-20°C
  • Brand:
CAT.NO. : ARA6573
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Product Details
Background
Required to maintain individual mitotic chromosomes dispersed in the cytoplasm following nuclear envelope disassembly (PubMed:27362226). Associates with the surface of the mitotic chromosome, the perichromosomal layer, and covers a substantial fraction of the chromosome surface.
Application
To ensure optimal assay performance, AREX recommends conducting reagent titration tailored to each testing system for optimal detection results.

IHC

1:200-1:400

IF/ICC

1:100-1:1000

FC

1:100-1:500

*Results are sample-specific. Please refer to your local assay conditions and test parameters for reference.
Overview

Description

Rabbit Monoclonal Antibody to Ki-67

Antibody Type

Primary antibody

Predicted MW

359kDa

Immunogen

A synthetic peptide corresponding to Ki-67 residues Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) within aa1000-1200 of Ki-67 was used as an analysis of Endometrium cancer tissue labelling Ki-67 with RR677 at 1:400. immunogen. Heat mediated antigen retrieval was performed using Tris/EDTA buffer pH

Purification

ProA affinity purified IgG

Form/Buffer

PBS 59%, Sodium azide 0.01%, Glycerol 40%, BSA 0.61%.

Alternative Names

Antigen KI-67

Gene Symbol

MKI67

Entrez Gene

4288(Human)

Swissprot

P46013

*AREX continuously optimizes our products. Webpage content may not reflect the latest updates. For inquiries, please contact info@arexbio.com or your local distributor.
*Clone Number, Reactivity, Source/Host and Clonality can be found in the product name and Key Features section above.
Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of Endometrium cancer tissue labelling Ki-67 with ARA786 at 1:400. Heat mediated antigen retrieval was performed using Tris/EDTA buffer pH 9.0.

Overlay histogram showing Ramos cells stained with ARA786 (Red). The cells were fixed with 4% paraformaldehyde (10 min) and then permeabilized with 0.1% TritonX-100 for 15 min. The cells were then incubated in the antibody (ARA786, 1:100 dilution) in 1x PBS/1% BSA for 30 min at room temperature. The secondary antibody used was a Goat Anti-Rabbit Alexa Fluor<sup>®</sup> 488 (IgG H+L) at 1:2,000 dilution for 20 min at room temperature. Unlabelled sample (Black) was used as a control.

ARA786 staining Ki-67 in Hela cells by ICC/IF (Immunocytochemistry/immunofluorescence). Cells were fixed with paraformaldehyde, permeabilized with 0.1% Triton X-100 and blocked with 10% goat serum for half an hour at room temperature. Samples were incubated with primary antibody (1:1,000) at 4°C. An Alexa Fluor<sup>®</sup> 594-conjugated Goat Anti-Rabbit IgG polyclonal was used as the secondary antibody (1:500). DAPI (blue) was used as the nuclear counter stain.

Control: PBS and secondary antibody, An Alexa Fluor<sup>®</sup> 594-conjugated Goat Anti-Rabbit IgG(1:500).

Storage
Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.
Note
For Research Use Only. Not for diagnostic, therapeutics, prophylactic or in vivo use.
FAQs
What are the main types of research antibodies and how do they differ?
Research antibodies are mainly divided into monoclonal antibodies and polyclonal antibodies. Monoclonal antibodies typically offer higher specificity and better batch-to-batch consistency, while polyclonal antibodies often provide stronger affinity but may show more variation between batches. The choice depends on your specific experimental needs.
How can I tell if a research antibody is suitable for my experiment?
It is recommended to carefully review the product datasheet for validated applications, species reactivity, recommended dilutions, and published references. For new antibodies, performing a small-scale validation with positive control samples is usually helpful.
Can improper storage of research antibodies affect experimental results?
Yes. Antibodies are sensitive to temperature, repeated freeze-thaw cycles, and contamination. Improper storage may lead to reduced activity, increased background, or weaker signals. It is best to follow the storage instructions provided in the product datasheet.
Why doesn’t the recommended dilution in the datasheet work well in my experiment?
The recommended dilution is based on the supplier’s test conditions. Factors such as sample type, fixation method, and detection system in your lab can influence the optimal working concentration. Performing a dilution series optimization in your own system is often necessary.
What precautions should I take when using a newly purchased research antibody for the first time?
It is advisable to briefly centrifuge the antibody (especially concentrated or lyophilized ones), then perform a small-scale pilot experiment using the recommended conditions. Recording the batch number and usage date is also helpful for future tracking.
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