• Product name

    Anti-Cullin 4B/CUL-4B antibody
    See all Cullin 4B/CUL-4B primary antibodies
  • Description

    Rabbit polyclonal to Cullin 4B/CUL-4B
  • Host species

  • Tested applications

    Suitable for: WBmore details
    Unsuitable for: IP
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Rabbit, Horse, Guinea pig, Cow, Pig, Chimpanzee, Cynomolgus monkey, Rhesus monkey, Gorilla, Orangutan, Elephant
  • Immunogen

    Synthetic peptide corresponding to Human Cullin 4B/CUL-4B aa 50-100. (NP_003579.3)


  • Positive control

    • 293T, HeLa and Jurkat whole cell lysate (ab7899).
  • General notes

    Protein previously labeled as Cullin 4B.


  • Form

  • Storage instructions

    Shipped at 4°C. Store at +4°C.
  • Storage buffer

    Preservative: 0.09% Sodium azide
    Constituent: 99% Tris citrate/phosphate

    pH 7 to 8
  • Concentration information loading...
  • Purity

    Immunogen affinity purified
  • Purification notes

    ab157103 was affinity purified using an epitope specific to Cullin 4B/CUL-4B immobilized on solid support.
  • Clonality

  • Isotype

  • Research areas


Our Abpromise guarantee covers the use of ab157103 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 1/2000 - 1/10000. Predicted molecular weight: 104 kDa.
  • Application notes
    Is unsuitable for IP.
  • Target

    • Function

      Core component of multiple cullin-RING-based E3 ubiquitin-protein ligase complexes which mediate the ubiquitination and subsequent proteasomal degradation of target proteins. The functional specificity of the E3 ubiquitin-protein ligase complex depends on the variable substrate recognition subunit. CUL4B may act within the complex as a scaffold protein, contributing to catalysis through positioning of the substrate and the ubiquitin-conjugating enzyme. Plays a role as part of the E3 ubiquitin-protein ligase complex in polyubiquitination of CDT1, histone H2A, histone H3 and histone H4 in response to radiation-induced DNA damage. Targeted to UV damaged chromatin by DDB2 and may be important for DNA repair and DNA replication. Required for ubiquitination of cyclin E, and consequently, normal G1 cell cycle progression. Regulates the mammalian target-of-rapamycin (mTOR) pathway involved in control of cell growth, size and metabolism. Specific CUL4B regulation of the mTORC1-mediated pathway is dependent upon 26S proteasome function and requires interaction between CUL4B and MLST8.
    • Pathway

      Protein modification; protein ubiquitination.
    • Involvement in disease

      Defects in CUL4B are the cause of mental retardation syndromic X-linked Cabezas type (MRXC) [MIM:300354]; also known as mental retardation syndromic X-linked type 15. A syndromic form of X-linked mental retardation characterized by severe intellectual deficit associated with short stature, craniofacial dysmorphism, small testes, muscle wasting in lower legs, kyphosis, joint hyperextensibility, pes cavus, small feet, and abnormalities of the toes. Additional neurologic manifestations include speech delay and impairment, tremor, seizures, gait ataxia, hyperactivity and decreased attention span.
    • Sequence similarities

      Belongs to the cullin family.
    • Post-translational

      Neddylated. Deneddylated via its interaction with the COP9 signalosome (CSN) complex.
    • Cellular localization

    • Information by UniProt
    • Database links

    • Alternative names

      • CUL 4B antibody
      • CUL-4B antibody
      • CUL4B antibody
      • CUL4B_HUMAN antibody
      • Cullin-4B antibody
      • DKFZp686F1470 antibody
      • KIAA0695 antibody
      • MRXHF2 antibody
      • MRXSC antibody
      • SFM2 antibody
      see all


    • All lanes : Anti-Cullin 4B/CUL-4B antibody (ab157103) at 0.1 µg/ml

      Lane 1 : 293T whole cell lysate at 50 µg
      Lane 2 : 293T whole cell lysate at 15 µg
      Lane 3 : HeLa whole cell lysate at 50 µg
      Lane 4 : Jurkat whole cell lysate at 50 µg

      Developed using the ECL technique.

      Predicted band size: 104 kDa

      Exposure time: 3 minutes


    This product has been referenced in:

    • Huang H  et al. MicroRNA-133b inhibits cell proliferation and promotes apoptosis by targeting cullin 4B in esophageal squamous cell carcinoma. Exp Ther Med 15:3743-3750 (2018). Read more (PubMed: 29581734) »
    See 1 Publication for this product

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