MAB4190 | Anti-Ki-67 Antibody, clone Ki-S5

100 µg  
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      Replacement Information

      Key Spec Table

      Species ReactivityKey ApplicationsHostFormatAntibody Type
      HFC, ICC, IHC, IH(P), WBMPurifiedMonoclonal Antibody
      Catalogue NumberMAB4190
      Brand Family Chemicon®
      Trade Name
      • Chemicon
      DescriptionAnti-Ki-67 Antibody, clone Ki-S5
      Background InformationKi67 antigen is the prototypic cell cycle related nuclear protein, expressed by proliferating cells in all phases of the active cell cycle (G1, S, G2 and M phase). It is absent in resting (G0) cells. Ki67 antibodies are useful in establishing the cell growing fraction in neoplasms (immunohistochemically quantified by determining the number of Ki67 positive cells among the total number of resting cells = Ki67 index). In neoplastic tissues the prognostic value is comparable to the tritiated thymidine labelling index. The correlation between low Ki67 index and histologically low grade tumours is strong. Ki67 is routinely used as a marker of cell cycling and proliferation. This specificity of Ki-S5 antibody for proliferating cells might make it a useful tool for determination of the proliferative fraction in tumors such as Non-Hodgkin's lymphoma (Kreipe et al., 1993), mammary carcinomas (Mauri et al., 1984), ovarian tumors (Ballin et al., 1994) and prostate cancer.
      Product Information
      • Tonsil tissue, A431 cell lysate
      PresentationMouse monoclonal IgG1 in buffer containing 0.02 M Phosphate buffer, 0.25 M NaCl, pH 7.6 with 0.1% sodium azide.
      ApplicationAnti-Ki-67 Antibody, clone Ki-S5 is a high quality Mouse Monoclonal Antibody for the detection of Ki-67 & has been validated in FC, ICC, IHC, IHC(P) & WB.
      Key Applications
      • Flow Cytometry
      • Immunocytochemistry
      • Immunohistochemistry
      • Immunohistochemistry (Paraffin)
      • Western Blotting
      Application NotesImmunocytochemistry:
      A 5-10 μg/mL concentration of a previous lot was used in IC.

      A 5-10 μg/mL concentration of a previous lot was used in IH.

      5-10 µg/mL on formalin fixed paraffin tissue. Citrate buffer-microwave antigen retrieval

      Flow Cytometry:
      A previous lot of this antibody was used in FC.

      Western blot:
      1-10 µg/mL

      Optimal working dilutions must be determined by end user.
      Biological Information
      ImmunogenNuclear protein preparation from the human cell line U937.50.
      ConcentrationPlease refer to the Certificate of Analysis for the lot-specific concentration.
      SpecificityIn Immunoprecipitation and Western blot experiments the Ki-S5 antibody recognizes a cell-cycle-associated protein of 345 kD and 395 kD (Kreipe et al., 1993) identical with the Ki-67 antigen. The antibody binds to a formalin-resistant epitope of the Ki-67 antigen. The immunoreactivity of Ki-S5 is confined to the nuclei of proliferating cells and no crossreactivity with cytoplasmic antigens of epithelial occurs even after antigen retrieval (Mauri et al., 1984). A comparison of immunohistochemical labeling of fresh and fixed tissue samples of NHL showed that identical results were obtained with Ki-67 and Ki-S5 (Kreipe et al., 1993). The Ki-67 antigen is preferentially expressed during late G1, S, G2 and M phase of the cell cycle, while resting, non-cycling cells (G0 phase) lack the Ki-67 antigen. In addition, constantly proliferating cells (e.g. cell lines) react positively to Ki-S5 during the entire cell-cycle. This specificity of Ki-S5 antibody for proliferating cells might make it a useful tool for determination of the proliferative fraction in tumors such as Non-Hodgkin's lymphoma (Kreipe et al., 1993), mammary carcinomas (Mauri et al., 1984), ovarian tumors (Ballin et al., 1994) and prostate cancer.
      Species Reactivity
      • Human
      Antibody TypeMonoclonal Antibody
      Entrez Gene Number
      Gene Symbol
      • MKI67
      • KIA
      • Ki-67
      Purification MethodProtein A Purfied
      UniProt Number
      UniProt SummaryFUNCTION: SwissProt: P46013 # Thought to be required for maintaining cell proliferation.
      SIZE: 3256 amino acids; 358694 Da
      SUBUNIT: Binds through the FHA domain to MKI67IP.
      SUBCELLULAR LOCATION: Nucleus. Note=Predominantly localized in the G1 phase in the perinucleolar region, in the later phases it is also detected throughout the nuclear interior, being predominantly localized in the nuclear matrix. In mitosis, it is present on all chromosomes.
      DEVELOPMENTAL STAGE: Expression of this antigen occurs preferentially during late G1, S, G2 and M phases of the cell cycle, while in cells in G0 phase the antigen cannot be detected.
      SIMILARITY: SwissProt: P46013 ## Contains 1 FHA domain.
      Molecular Weight345 & 395 kDa
      Physicochemical Information
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Quality AssuranceEvaluated by Western Blot on A431 lysates.

      Western Blot Analysis:
      1:500 dilution of this antibody detected cell-cycle-associated protein of 345 kDa and 395 kDa on 10 μg of A431 lysates.
      Usage Statement
      • Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
      Storage and Shipping Information
      Storage ConditionsStable for 1 year at 2-8ºC from date of receipt.
      Packaging Information
      Material Size100 µg
      Transport Information
      Supplemental Information




      Safety Data Sheet (SDS) 

      Certificates of Analysis

      TitleLot Number
      Anti-Ki-67, clone Ki-S5 2475762
      Anti-Ki-67, clone Ki-S5 - 2366564 2366564
      Anti-Ki-67, clone Ki-S5 - 1951044 1951044
      Anti-Ki-67, clone Ki-S5 - 1998927 1998927
      Anti-Ki-67, clone Ki-S5 - 2024193 2024193
      Anti-Ki-67, clone Ki-S5 - 2055444 2055444
      Anti-Ki-67, clone Ki-S5 - 2207168 2207168
      Anti-Ki-67, clone Ki-S5 - 2512440 2512440
      Anti-Ki-67, clone Ki-S5 - LV1387121 LV1387121
      Anti-Ki-67, clone Ki-S5 - LV1523210 LV1523210


      Reference overviewApplicationPub Med ID
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      Data Sheet

      Anti-Ki-67, clone Ki-S5 - Data Sheet
      Reprogramming Cell Fate and Function Novel Strategies for iPSC Generation, Characterization, and Differentiation

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      Life Science Research > Antibodies and Assays > Primary Antibodies