• Product name
  • Description
    Rabbit polyclonal to XPB
  • Host species
  • Tested applications
    Suitable for: WB, ICC/IFmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Cow, Zebrafish
  • Immunogen

    Recombinant fragment, corresponding to amino acids 521-712 of Human XPB (NP_000113).

  • Positive control
    • 293T, A431 and H1299 whole cell lysates; HeLa cells; HepG2, Molt-4 and Raji cell lines



Our Abpromise guarantee covers the use of ab97668 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 1/1000. Predicted molecular weight: 89 kDa.
ICC/IF 1/200.


  • Function
    ATP-dependent 3'-5' DNA helicase, component of the core-TFIIH basal transcription factor, involved in nucleotide excision repair (NER) of DNA and, when complexed to CAK, in RNA transcription by RNA polymerase II. Acts by opening DNA either around the RNA transcription start site or the DNA damage.
  • Involvement in disease
    Defects in ERCC3 are the cause of xeroderma pigmentosum complementation group B (XP-B) [MIM:610651]; also known as xeroderma pigmentosum II (XP2) or XP group B (XPB) or xeroderma pigmentosum group B combined with Cockayne syndrome (XP-B/CS). Xeroderma pigmentosum is an autosomal recessive pigmentary skin disorder characterized by solar hypersensitivity of the skin, high predisposition for developing cancers on areas exposed to sunlight and, in some cases, neurological abnormalities. Some XP-B patients present features of Cockayne syndrome, including dwarfism, sensorineural deafness, microcephaly, mental retardation, pigmentary retinopathy, ataxia, decreased nerve conduction velocities.
    Defects in ERCC3 are a cause of trichothiodystrophy photosensitive (TTDP) [MIM:601675]. TTDP is an autosomal recessive disease characterized by sulfur-deficient brittle hair and nails, ichthyosis, mental retardation, impaired sexual development, abnormal facies and cutaneous photosensitivity correlated with a nucleotide excision repair (NER) defect. Neonates with trichothiodystrophy and ichthyosis are usually born with a collodion membrane. The severity of the ichthyosis after the membrane is shed is variable, ranging from a mild to severe lamellar ichthyotic phenotype. There are no reports of skin cancer associated with TTDP.
  • Sequence similarities
    Belongs to the helicase family. RAD25/XPB subfamily.
    Contains 1 helicase ATP-binding domain.
    Contains 1 helicase C-terminal domain.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • Basic transcription factor 2 89 kDa subunit antibody
    • BTF 2 antibody
    • BTF2 antibody
    • BTF2 p89 antibody
    • DNA excision repair protein ERCC-3 antibody
    • DNA repair protein complementing XP-B cells antibody
    • ERCC 3 antibody
    • ercc3 antibody
    • ERCC3_HUMAN antibody
    • Excision Repair Cross-complementing Rodent Repair deficiency complementation Group 3 antibody
    • GTF2H antibody
    • RAD 25 antibody
    • RAD25 antibody
    • TFIIH 89 kDa subunit antibody
    • TFIIH antibody
    • TFIIH basal transcription factor complex 89 kDa subunit antibody
    • TFIIH basal transcription factor complex helicase XPB subunit antibody
    • TFIIH p89 antibody
    • Xeroderma pigmentosum group B-complementing protein antibody
    see all


  • All lanes : Anti-XPB antibody (ab97668) at 1/1000 dilution

    Lane 1 : 293T whole cell lysate
    Lane 2 : A431 whole cell lysate
    Lane 3 : H1299 whole cell lysate

    Lysates/proteins at 30 µg per lane.

    Predicted band size: 89 kDa

    7.5% SDS PAGE
  • Immunofluorescence analysis of paraformaldehyde-fixed HeLa cells, using ab97668 at 1/200 dilution. Lower image is merged with DNA probe.


ab97668 has not yet been referenced specifically in any publications.

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