• Product name
  • Description
    Rabbit polyclonal to FACL4
  • Host species
  • Tested applications
    Suitable for: ELISA, WB, IHC-P, ICC/IFmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    KLH conjugated synthetic peptide (10-30 aa in length) in the region of 276~292 of human FACL4.

  • Positive control
    • RKO cell lysate, hepatocarcinoma tissue. This antibody gave a positive result when used in the following formaldehyde fixed cell lines: HepG2.



Our Abpromise guarantee covers the use of ab38420 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
ELISA 1/1000.
WB 1/100 - 1/500. Predicted molecular weight: 79 kDa.
IHC-P 1/50 - 1/100.
ICC/IF Use a concentration of 10 µg/ml.


  • Function
    Activation of long-chain fatty acids for both synthesis of cellular lipids, and degradation via beta-oxidation. Preferentially uses arachidonate and eicosapentaenoate as substrates.
  • Involvement in disease
    Defects in ACSL4 are the cause of mental retardation X-linked type 63 (MRX63) [MIM:300387]. Mental retardation is a mental disorder characterized by significantly sub-average general intellectual functioning associated with impairments in adaptative behavior and manifested during the developmental period. Non-syndromic mental retardation patients do not manifest other clinical signs.
    Defects in ACSL4 are involved in Alport syndrome with mental retardation midface hypoplasia and elliptocytosis (ATS-MR) [MIM:300194]. A X-linked contiguous gene deletion syndrome characterized by glomerulonephritis, deafness, mental retardation, midface hypoplasia and elliptocytosis.
  • Sequence similarities
    Belongs to the ATP-dependent AMP-binding enzyme family.
  • Cellular localization
    Mitochondrion outer membrane. Peroxisome membrane. Microsome membrane. Endoplasmic reticulum membrane.
  • Information by UniProt
  • Database links
  • Alternative names
    • ACS 4 antibody
    • ACS4 antibody
    • ACSL 4 antibody
    • Acsl4 antibody
    • ACSL4_HUMAN antibody
    • acyl CoA synthetase 4 antibody
    • Acyl CoA synthetase long chain family member 4 antibody
    • FACL 4 antibody
    • FACL4 antibody
    • Fatty acid Coenzyme A ligase antibody
    • fatty acid Coenzyme A ligase long-chain 4 antibody
    • LACS 4 antibody
    • LACS4 antibody
    • Lignoceroyl CoA synthase antibody
    • Long chain 4 antibody
    • long chain acyl CoA synthetase 4 antibody
    • long chain fatty acid CoA ligase 4 antibody
    • long chain fatty acid Coenzyme A ligase 4 antibody
    • Long-chain acyl-CoA synthetase 4 antibody
    • Long-chain-fatty-acid--CoA ligase 4 antibody
    • MRX63 antibody
    • MRX68 antibody
    see all


  • ICC/IF image of ab38420 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody ab38420 at 10µg/ml overnight at +4°C. The secondary antibody (pseudo-colored green) was Alexa Fluor® 488 goat anti- rabbit (ab150081) IgG (H+L) preadsorbed, used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (pseudo-colored red) at a 1/200 dilution for 1h at room temperature. DAPI was used to stain the cell nuclei (pseudo-colored blue) at a concentration of 1.43µM for 1hour at room temperature.

  • Anti-FACL4 antibody (ab38420) + RKO cell lysate (human colon cancer) treated with 10% FCS for 24hrs

    Predicted band size: 79 kDa
    Observed band size: 75 kDa (why is the actual band size different from the predicted?)

  • Formalin-fixed and paraffin-embedded human hepatocarcinoma tissue reacted with the primary antibody, which was peroxidase-conjugated to the secondary antibody, followed by AEC staining. This data demonstrates the use of this antibody for immunohistochemistry; clinical relevance has not been evaluated.


ab38420 has not yet been referenced specifically in any publications.

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