• Product name

  • Description

    Rabbit polyclonal to Timeless
  • Host species

  • Tested applications

    Suitable for: WB, IP, ICC/IF, IHC-Pmore details
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Chimpanzee, Gorilla, Orangutan
  • Immunogen

    Synthetic peptide (Human) corresponding to a region between residues 1170 and the C-terminus (residue 1208) of Timeless. (NP_003911.1)

  • Positive control

    • Whole cell lysate from HeLa and 293T cells.



Our Abpromise guarantee covers the use of ab72458 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. Detects a band of approximately 139, 160 kDa (predicted molecular weight: 139 kDa).
IP Use at 2-5 µg/mg of lysate.
ICC/IF 1/200. Use with paraformaldehyde-fixed cells permeabilized with 0.5 % Triton X-100.
IHC-P 1/500 - 1/2000. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.


  • Function

    Required for normal progression of S-phase. Involved in the circadian rhythm autoregulatory loop. Negatively regulates CLOCK-NPAS2/BMAL1-induced transactivation of PER1 possibly via translocation of PER1 into the nucleus. Promotes TIPIN nuclear localiZation. Involved in cell survival after DNA damage or replication stress. May be specifically required for the ATR-CHK1 pathway in the replication checkpoint induced by hydroxyurea or ultraviolet light. May also play an important role in epithelial cell morphogenesis and formation of branching tubules.
  • Tissue specificity

    Expressed in all tissues examined including brain, heart, lung, liver, skeletal muscle, kidney, placenta, pancreas, spleen, thymus and testis. Highest levels of expression in placenta, pancreas, thymus and testis.
  • Sequence similarities

    Belongs to the timeless family.
  • Cellular localization

  • Information by UniProt
  • Database links

  • Alternative names

    • FLJ12640 antibody
    • FLJ20714 antibody
    • hTIM antibody
    • Protein timeless homolog antibody
    • TIM antibody
    • TIM_HUMAN antibody
    • TIM1 antibody
    • Timeless antibody
    • timeless circadian clock 1 antibody
    • timeless circadian clock antibody
    • timeless homolog antibody
    • TIMELESS1 antibody
    • Tof1 homolog antibody
    see all


  • HeLa whole cell lysate, (1 mg for IP, 20% of IP loaded) with ab 72458 used for IP at 3 µg/mg lysate, and for subsequent WB at 0.1 µg/ml.
    Detection: Chemiluminescence with an exposure time of 3 seconds.
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human breast carcinoma tissue labelling Timeless with ab72458 at 1/400 (0.5µg/ml). A DyLight® 594-conjugated goat anti-rabbit IgG (H+L) (1/100) was used as the secondary antibody.
  • All lanes : Anti-Timeless antibody (ab72458) at 0.04 µg/ml

    Lane 1 : HeLa whole cell lysate at 50 µg
    Lane 2 : HeLa whole cell lysate at 15 µg
    Lane 3 : HeLa whole cell lysate at 5 µg
    Lane 4 : 293T whole cell lysate at 50 µg

    Predicted band size: 139 kDa
    Observed band size: 139 kDa
    Additional bands at: 160 kDa. We are unsure as to the identity of these extra bands.

  • ab72458 (1/200) staining Timeless in assynchronous HeLa cells (green). Cells were fixed in paraformaldehyde, permeabilized with 0.5% Triton X-100 and counterstained with DAPI in order to highlight the nucleus (red). Please refer to abreview for further experimental details.

    See Abreview

  • IHC image of ab72458 staining Timeless in Human Tonsil formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab72458, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.


This product has been referenced in:

  • Cortone G  et al. Interaction of the Warsaw breakage syndrome DNA helicase DDX11 with the replication fork-protection factor Timeless promotes sister chromatid cohesion. PLoS Genet 14:e1007622 (2018). Read more (PubMed: 30303954) »
  • Calì F  et al. Tim/Timeless, a member of the replication fork protection complex, operates with the Warsaw breakage syndrome DNA helicase DDX11 in the same fork recovery pathway. Nucleic Acids Res 44:705-17 (2016). IP . Read more (PubMed: 26503245) »
See all 4 Publications for this product

Customer reviews and Q&As

Immunocytochemistry/ Immunofluorescence
Human Cell (HeLa)
Yes - 0.5% Triton X100

Dr. Kirk Mcmanus

Verified customer

Submitted Feb 01 2011

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