• Product name
  • Description
    Rabbit polyclonal to MLL5
  • Specificity
    ab75339 reacts specifically with MLL5 protein.
  • Tested applications
    Suitable for: WB, ICCmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide derived from the N terminal domain of mouse MLL5



Our Abpromise guarantee covers the use of ab75339 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/200 - 1/2000. Predicted molecular weight: 205 kDa.
ICC Use at an assay dependent dilution.


  • Function
    Histone methyltransferase that specifically mono- and dimethylates 'Lys-4' of histone H3 (H3K4me1 and H3K4me2). H3 'Lys-4' methylation represents a specific tag for epigenetic transcriptional activation. Key regulator of hematopoiesis involved in terminal myeloid differentiation and in the regulation of hematopoietic stem cell (HSCs) self-renewal by a mechanism that involves DNA methylation. Plays an essential role in retinoic-acid-induced granulopoiesis by acting as a coactivator of RAR-alpha (RARA) in target gene promoters. Also acts as an important cell cycle regulator, participating in cell cycle regulatory network machinery at multiple cell cycle stages. Required to suppress inappropriate expression of S-phase-promoting genes and maintain expression of determination genes in quiescent cells. Overexpression inhibits cell cycle progression, while knockdown induces cell cycle arrest at both the G1 and G2/M phases.
  • Tissue specificity
    Widely expressed in both adult and fetal tissues. Highest levels of expression observed in fetal thymus and kidney and in adult hematopoietic tissues, jejunum and cerebellum.
  • Sequence similarities
    Belongs to the histone-lysine methyltransferase family. TRX/MLL subfamily.
    Contains 1 PHD-type zinc finger.
    Contains 1 SET domain.
  • Post-translational
    O-glycosylation at Thr-440 in the SET domain by OGT is essential for the histone methyltransferase and the coactivator activity toward RARA in granulopoiesis. The absence of Thr-440 glycosylation in assays done in vitro may explain why some authors did not detected any histone methyltransferase activity for this protein.
  • Cellular localization
    Nucleus speckle. Absent from the nucleolus.
  • Information by UniProt
  • Database links
  • Alternative names
    • HDCMC04P antibody
    • Histone lysine N methyltransferase MLL5 antibody
    • Histone-lysine N-methyltransferase MLL5 antibody
    • KMT2E antibody
    • Lysine N methyltransferase 2E antibody
    • Lysine N-methyltransferase 2E antibody
    • MGC70452 antibody
    • Mll5 antibody
    • MLL5_HUMAN antibody
    • Myeloid/lymphoid or mixed lineage leukemia 5 (trithorax homolog, Drosophila) antibody
    • Myeloid/lymphoid or mixed lineage leukemia 5 antibody
    • Myeloid/lymphoid or mixed lineage leukemia protein 5 antibody
    • Myeloid/lymphoid or mixed-lineage leukemia protein 5 antibody
    see all


  • ab75339 staining MLL5 in HeLa cells by Immunocytochemistry/ Immunofluorescence. Cells were fixed in Methanol and permeabilized in PHEM/0.5% Triton X-100 prior to blocking in 2.5% BSA for 1 hour at 21°C. The primary antibody was diluted 1/100 and incubated with the sample for 1 hour at 21°C. The secondary antibody was FITC-conjugated Donkey anti-Rabbit polyclonal, diluted 1/150.
    DNA (DAPI) stain in blue, anti-Aurora A antibody in red, anti-MLL5 in green. Left cell shows centrosomal staining in interphase (arrow head). Right cell shows centrosomal staining in mitotic cell. Centrosomal localisation of MLL5 was shown in Liu et al (2010) PMID:20439461

    See Abreview

  • Anti-MLL5 antibody (ab75339) at 1/1500 dilution + whole cell lysate prepared from human primary fibroblasts at 40000 cells

    Goat anti-rabbit IgG HRP at 1/5000 dilution
    Developed using the ECL technique

    Predicted band size : 205 kDa
    Observed band size : 80,260 kDa (why is the actual band size different from the predicted?)

    Exposure time : 5 minutes

    Image courtesy of an anonymous Abreview.

    Fujiki et al (2010) (PMID:19377461) report two isoforms of MLL5 at 75 and 260 kDa corresponding to the major bands seen with this antibody.

    See Abreview


This product has been referenced in:
  • Baychelier F  et al. Identification of a cellular ligand for the natural cytotoxicity receptor NKp44. Blood 122:2935-42 (2013). Read more (PubMed: 23958951) »
  • Perugorria MJ  et al. Histone methyltransferase ASH1 orchestrates fibrogenic gene transcription during myofibroblast transdifferentiation. Hepatology 56:1129-39 (2012). WB, ChIP ; Rat, Human . Read more (PubMed: 22488473) »

See all 2 Publications for this product

Customer reviews and Q&As

Western blot
Loading amount
30 µg
Gel Running Conditions
Reduced Denaturing (4-12%)
Human Cell lysate - whole cell (U2OS)
Blocking step
Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5%

Abcam user community

Verified customer

Submitted May 09 2014

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I hope the antibody will give best results. Please do not hesitate to contact us if ...

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Thank you for contacting Abcam.

The exact immunogen sequence for ab75339 is proprietary and so I do not have access to that information, but the overall level of homology between the N-terminal region is about 60%. Also there is not significa...

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Abcam guarantees this product to work in the species/application used in this Abreview.
Western blot
Human Cell lysate - whole cell (Primary Human Fibroblast)
Loading amount
40000 cells
Primary Human Fibroblast
Gel Running Conditions
Reduced Denaturing (3-8% Tris-Acetate)
Blocking step
Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 21°C

Abcam user community

Verified customer

Submitted Mar 16 2011

Immunocytochemistry/ Immunofluorescence
Human Cell (HeLa)
Yes - PHEM / 0.5% Tx100
Blocking step
BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 2.5% · Temperature: 21°C

Abcam user community

Verified customer

Submitted Mar 11 2011


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