• Product name
  • Description
    Rabbit polyclonal to CDT2/RAMP
  • Host species
  • Tested applications
    Suitable for: ICC/IF, WB, IP, IHC-Pmore details
  • Species reactivity
    Reacts with: Mouse, Human
    Predicted to work with: Chimpanzee, Rhesus monkey, Gorilla, Orangutan
  • Immunogen

    Synthetic peptide corresponding to Human CDT2/RAMP.
    Database link: NP_057532.1

  • Positive control
    • Whole cell lysate from Hela and 293T cells.
  • General notes

     This product was previously labelled as CDT2




Our Abpromise guarantee covers the use of ab72264 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
ICC/IF Use a concentration of 5 µg/ml.
WB 1/2000 - 1/10000. Detects a band of approximately 91 kDa (predicted molecular weight: 79 kDa).
IP Use at 2-5 µg/mg of lysate.
IHC-P 1/100 - 1/500. Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.


  • Function
    Substrate-specific adapter of a DCX (DDB1-CUL4-X-box) E3 ubiquitin-protein ligase complex required for cell cycle control, DNA damage response and translesion DNA synthesis. The DCX(DTL) complex, also named CRL4(CDT2) complex, mediates the polyubiquitination and subsequent degradation of CDT1 and CDKN1A/p21(CIP1). CDT1 degradation in response to DNA damage is necessary to ensure proper cell cycle regulation of DNA replication. CDKN1A/p21(CIP1) degradation during S phase or following UV irradiation is essential to control replication licensing. Most substrates require their interaction with PCNA for their polyubiquitination: substrates interact with PCNA via their PIP-box, and those containing the 'K+4' motif in the PIP box, recruit the DCX(DTL) complex, leading to their degradation. In undamaged proliferating cells, the DCX(DTL) complex also promotes the 'Lys-164' monoubiquitination of PCNA, thereby being involved in PCNA-dependent translesion DNA synthesis.
  • Tissue specificity
    Expressed in placenta and testis, very low expression seen in skeletal muscle. Detected in all hematopoietic tissues examined, with highest expression in thymus and bone marrow. A low level detected in the spleen and lymph node, and barely detectable level in the peripheral leukocytes. RA treatment down-regulated the expression in NT2 cell.
  • Pathway
    Protein modification; protein ubiquitination.
  • Sequence similarities
    Belongs to the WD repeat cdt2 family.
    Contains 7 WD repeats.
  • Developmental stage
    Expressed in all fetal tissues examined, included brain, lung, liver, and kidney.
  • Post-translational
    Ubiquitinated by the anaphase promoting complex/cyclosome (APC/C).
    Phosphorylated upon DNA damage, probably by ATM or ATR.
  • Cellular localization
    Nucleus. Nucleus membrane. Cytoplasm > cytoskeleton > centrosome. Nuclear matrix-associated protein. Translocates from the interphase nucleus to the metaphase cytoplasm during mitosis.
  • Information by UniProt
  • Database links
  • Alternative names
    • Lethal(2) denticleless protein homolog antibody
    • CDW1 antibody
    • DCAF2 antibody
    • DDB1 and CUL4 associated factor 2 antibody
    • Ddb1- and Cul4-associated factor 2 antibody
    • Denticleless homolog antibody
    • Denticleless homolog (Drosophila) antibody
    • Denticleless protein homolog antibody
    • Dtl antibody
    • DTL_HUMAN antibody
    • L2DTL antibody
    • Lethal(2) denticleless protein homolog antibody
    • RA regulated nuclear matrix associated protein antibody
    • RAMP antibody
    • Retinoic acid regulated nuclear matrix associated protein antibody
    • Retinoic acid-regulated nuclear matrix-associated protein antibody
    see all


  • All lanes : Anti-CDT2/RAMP antibody (ab72264) at 0.04 µg/ml

    Lane 1 : Whole cell lysate from Hela cells at 50 µg
    Lane 2 : Whole cell lysate from Hela cells at 15 µg
    Lane 3 : Whole cell lysate from Hela cells at 5 µg
    Lane 4 : Whole cell lysate from 293T cells at 50 µg

    Predicted band size: 79 kDa
    Observed band size: 91 kDa
    why is the actual band size different from the predicted?

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human colon carcinoma (left) and mouse hybridoma tumor (right) tissues labelling CDT2/RAMP with ab72264 at 1/1000 (1µg/ml). Detection: DAB.

  • Immunoprecipitation/ Western Blot of CDT2/RAMP. Lane 1: ab72264 at 3µg/mg whole cell lysate. Lane 2: Control IgG. ab72264 at 1µg/ml for WB. Whole cell lysate from Hela cells at 1mg for IP, 20% of IP loaded. Chemiluminescence with an exposure time of 10 seconds.

  • ICC/IF image of ab72264 stained HeLa cells. The cells were 4% PFA fixed (10mins) 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 (ab72264, 5µg/ml) overnight at +4°C. The secondary antibody (green) was ab96899 Dylight 488 goat anti-rabbit IgG (H+L) used at a 1/250 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.


This product has been referenced in:
  • Jang SM  et al. The replication initiation determinant protein (RepID) modulates replication by recruiting CUL4 to chromatin. Nat Commun 9:2782 (2018). Read more (PubMed: 30018425) »
  • Jascur T  et al. N-Methyl-N'-nitro-N-nitrosoguanidine (MNNG) Triggers MSH2 and Cdt2 Protein-dependent Degradation of the Cell Cycle and Mismatch Repair (MMR) Inhibitor Protein p21Waf1/Cip1. J Biol Chem 286:29531-9 (2011). WB ; Human . Read more (PubMed: 21725088) »
See all 2 Publications for this product

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