Product: PCNA Antibody
Catalog: AF0239
Description: Rabbit polyclonal antibody to PCNA
Application: WB IHC IF/ICC
Reactivity: Human, Mouse, Rat
Prediction: Pig, Zebrafish, Bovine, Horse, Sheep, Rabbit, Dog, Chicken
Mol.Wt.: 36kDa; 29kD(Calculated).
Uniprot: P12004
RRID: AB_2833414

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 50ul $150 In stock
 100ul $250 In stock
 200ul $350 In stock
 1ml $1200 In stock

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Product Info

WB 1:500-1:3000, IHC 1:50-1:200, IF/ICC 1:100
*The optimal dilutions should be determined by the end user.

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Pig(100%), Zebrafish(88%), Bovine(100%), Horse(100%), Sheep(100%), Rabbit(100%), Dog(100%), Chicken(100%)
PCNA antibody detects endogenous levels of total PCNA.
Cite Format: Affinity Biosciences Cat# AF0239, RRID:AB_2833414.
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.


ATLD2; cb16; Cyclin; DNA polymerase delta auxiliary protein; etID36690.10; fa28e03; fb36g03; HGCN8729; MGC8367; Mutagen-sensitive 209 protein; OTTHUMP00000030189; OTTHUMP00000030190; PCNA; Pcna/cyclin; PCNA_HUMAN; PCNAR; Polymerase delta accessory protein; Proliferating cell nuclear antigen; wu:fa28e03; wu:fb36g03;


PCNA This protein is an auxiliary protein of DNA polymerase delta and is involved in the control of eukaryotic DNA replication by increasing the polymerase's processibility during elongation of the leading strand. Belongs to the PCNA family. Homotrimer. Forms a complex with activator 1 heteropentamer in the presence of ATP.



Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.

Model Confidence:
High(score>80) Medium(80>score>50) Low(score<50) No confidence

PTMs - P12004 As Substrate

Site PTM Type Enzyme
R5 Methylation
S10 Phosphorylation
K13 Acetylation
K13 Ubiquitination
K14 Acetylation
K14 Ubiquitination
Y60 Phosphorylation
R61 Methylation
K77 Acetylation
K77 Ubiquitination
K80 Acetylation
K80 Ubiquitination
C81 S-Nitrosylation
K110 Ubiquitination
K117 Ubiquitination
Y133 Phosphorylation
S134 Phosphorylation
C135 S-Nitrosylation
K138 Ubiquitination
R146 Methylation
S152 Phosphorylation
S161 Phosphorylation
C162 S-Nitrosylation
K164 Acetylation
K164 Sumoylation
K164 Ubiquitination
K168 Ubiquitination
K181 Ubiquitination
T185 Phosphorylation
K190 Acetylation
R210 Methylation
Y211 Phosphorylation P00533 (EGFR)
T216 Phosphorylation
K217 Acetylation
S228 Phosphorylation
K248 Acetylation
K248 Ubiquitination
Y250 Phosphorylation
K254 Sumoylation
K254 Ubiquitination
S261 Phosphorylation

Research Backgrounds


Auxiliary protein of DNA polymerase delta and is involved in the control of eukaryotic DNA replication by increasing the polymerase's processibility during elongation of the leading strand. Induces a robust stimulatory effect on the 3'-5' exonuclease and 3'-phosphodiesterase, but not apurinic-apyrimidinic (AP) endonuclease, APEX2 activities. Has to be loaded onto DNA in order to be able to stimulate APEX2. Plays a key role in DNA damage response (DDR) by being conveniently positioned at the replication fork to coordinate DNA replication with DNA repair and DNA damage tolerance pathways. Acts as a loading platform to recruit DDR proteins that allow completion of DNA replication after DNA damage and promote postreplication repair: Monoubiquitinated PCNA leads to recruitment of translesion (TLS) polymerases, while 'Lys-63'-linked polyubiquitination of PCNA is involved in error-free pathway and employs recombination mechanisms to synthesize across the lesion.


Phosphorylated. Phosphorylation at Tyr-211 by EGFR stabilizes chromatin-associated PCNA.

Acetylated by CREBBP and p300/EP300; preferentially acetylated by CREBBP on Lys-80, Lys-13 and Lys-14 and on Lys-77 by p300/EP300 upon loading on chromatin in response to UV irradiation. Lysine acetylation disrupts association with chromatin, hence promoting PCNA ubiquitination and proteasomal degradation in response to UV damage in a CREBBP- and EP300-dependent manner. Acetylation disrupts interaction with NUDT15 and promotes degradation.

Ubiquitinated. Following DNA damage, can be either monoubiquitinated to stimulate direct bypass of DNA lesions by specialized DNA polymerases or polyubiquitinated to promote recombination-dependent DNA synthesis across DNA lesions by template switching mechanisms. Following induction of replication stress, monoubiquitinated by the UBE2B-RAD18 complex on Lys-164, leading to recruit translesion (TLS) polymerases, which are able to synthesize across DNA lesions in a potentially error-prone manner. An error-free pathway also exists and requires non-canonical polyubiquitination on Lys-164 through 'Lys-63' linkage of ubiquitin moieties by the E2 complex UBE2N-UBE2V2 and the E3 ligases, HLTF, RNF8 and SHPRH. This error-free pathway, also known as template switching, employs recombination mechanisms to synthesize across the lesion, using as a template the undamaged, newly synthesized strand of the sister chromatid. Monoubiquitination at Lys-164 also takes place in undamaged proliferating cells, and is mediated by the DCX(DTL) complex, leading to enhance PCNA-dependent translesion DNA synthesis. Sumoylated during S phase.

Methylated on glutamate residues by ARMT1/C6orf211.

Subcellular Location:

Note: Colocalizes with CREBBP, EP300 and POLD1 to sites of DNA damage (PubMed:24939902). Forms nuclear foci representing sites of ongoing DNA replication and vary in morphology and number during S phase. Together with APEX2, is redistributed in discrete nuclear foci in presence of oxidative DNA damaging agents.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Subunit Structure:

Homotrimer. Interacts with p300/EP300; the interaction occurs on chromatin in UV-irradiated damaged cells. Interacts with CREBBP (via transactivation domain and C-terminus); the interaction occurs on chromatin in UV-irradiated damaged cells. Directly interacts with POLD1, POLD3 and POLD4 subunits of the DNA polymerase delta complex, POLD3 being the major interacting partner; the interaction with POLD3 is inhibited by CDKN1A/p21(CIP1). Forms a complex with activator 1 heteropentamer in the presence of ATP. Interacts with EXO1, POLH, POLK, DNMT1, ERCC5, FEN1, CDC6 and POLDIP2. Interacts with APEX2; this interaction is triggered by reactive oxygen species and increased by misincorporation of uracil in nuclear DNA. Forms a ternary complex with DNTTIP2 and core histone. Interacts with KCTD10 and PPP1R15A (By similarity). Directly interacts with BAZ1B. Interacts with HLTF and SHPRH. Interacts with NUDT15; this interaction is disrupted in response to UV irradiation and acetylation. Interacts with CDKN1A/p21(CIP1) and CDT1; interacts via their PIP-box which also recruits the DCX(DTL) complex. The interaction with CDKN1A inhibits POLD3 binding. Interacts with DDX11. Interacts with EGFR; positively regulates PCNA. Interacts with PARPBP. Interacts (when ubiquitinated) with SPRTN; leading to enhance RAD18-mediated PCNA ubiquitination. Interacts (when polyubiquitinated) with ZRANB3. Interacts with SMARCAD1. Interacts with CDKN1C. Interacts with PCLAF (via PIP-box). Interacts with RTEL1 (via PIP-box); the interaction is direct and essential for the suppression of telomere fragility. Interacts with FAM111A (via PIP-box); the interaction is direct and required for PCNA loading on chromatin binding. Interacts with LIG1. Interacts with SETMAR. Interacts with ANKRD17. Interacts with FBXO18/FBH1 (via PIP-box); the interaction recruits the DCX(DTL) complex and promotes ubiquitination and degradation of FBXO18/FBH1. Interacts with POLN. Interacts with SDE2 (via PIP-box); the interaction is direct and prevents ultraviolet light induced monoubiquitination. Component of the replisome complex composed of at least DONSON, MCM2, MCM7, PCNA and TICRR; interaction at least with PCNA occurs during DNA replication. Interacts with MAPK15; the interaction is chromatin binding dependent and prevents MDM2-mediated PCNA destruction by inhibiting the association of PCNA with MDM2. Interacts with PARP10 (via PIP-box). Interacts with DDI2. Interacts with HMCES (via PIP-box).

(Microbial infection) Interacts with herpes virus 8 protein LANA1.


Belongs to the PCNA family.

Research Fields

· Cellular Processes > Cell growth and death > Cell cycle.   (View pathway)

· Cellular Processes > Cellular community - eukaryotes > Tight junction.   (View pathway)

· Genetic Information Processing > Replication and repair > DNA replication.

· Genetic Information Processing > Replication and repair > Base excision repair.

· Genetic Information Processing > Replication and repair > Nucleotide excision repair.

· Genetic Information Processing > Replication and repair > Mismatch repair.

· Human Diseases > Infectious diseases: Viral > Hepatitis B.

· Human Diseases > Infectious diseases: Viral > HTLV-I infection.


1). A novel UV-curable extravascular stent to prevent restenosis of venous grafts. Composites Part B: Engineering [IF=13.1]

2). Huang et al. Graphene foam/hydrogel scaffolds for regeneration of peripheral nerve using ADSCs in a diabetic mouse model. Nano Research [IF=9.9]

3). Lei D et al. Quercetin inhibited mesangial cell proliferation of early diabetic nephropathy through the Hippo pathway. PHARMACOLOGICAL RESEARCH 2019 Jun 17;146:104320 (PubMed: 31220559) [IF=9.3]

Application: IF/ICC    Species: mouse    Sample: glomerular mesangial cells

Fig.1.|Treatment with quercetin ameliorated the proliferation of high glucose-cultured glomerular mesangial cells. (A and B)Distribution and expression of PCNA and ki67 through immunofluorescence.

Application: IHC    Species: mouse    Sample: renal cortex

Fig. 5.| Quercetin ameliorated the glomerular mesangial cell proliferation of diabetic mice. (A) Renal ultra-structural changes of diabetic mice by transmission electron microscope. (B) Glomerular mesangial cell proliferation activity detected by 5-ethynyl-20-deoxyuridine incorporation assay. Scale bar = 20 μm. (C)Distribution and expression of ki67 and PCNA in renal cortex of diabetic mice through immunohistochemistry. Scale bar = 20 μm. 4.

4). Haitao Chen et al. Berberine inhibits high fat diet-associated colorectal cancer through modulation of the gut microbiota-mediated lysophosphatidylcholine. International Journal of Biological Sciences (PubMed: 37151876) [IF=9.2]

Application: WB    Species: Human    Sample: HCT 8 cells and HCT 116 cells

Figure 5 The BBR-associated differential metabolite LPC contributes to cell proliferation and cell junction impairment. (A) Cell growth curves of the CRC cell lines HCT116, HCT-8, SW480, and the normal intestinal epithelial cell line IEC-6, with or without LPC treatment. (B) HCT 116 cells and HCT 8 cells with or without LPC treatment were analyzed with flow cytometry. (C) Expression of β-catenin and PCNA in HCT 8 cells and HCT 116 cells with or without LPC treatment. (D) Expression of IL-6 and p-STAT3 in Raw 264.7 cells with or without LPC treatment. (E) Expression of occludin and E-cadherin in HCT-8 cells and HCT-116 cells co-cultured with Raw264.7 cells with or without LPC treatment.

5). Wang S et al. Long noncoding RNAs regulated spermatogenesis in varicocele‐induced spermatogenic dysfunction. CELL PROLIFERATION 2022 Mar 17;e13220. (PubMed: 35297519) [IF=8.5]

Application: WB    Species: rat    Sample: Testicular

FIGURE 13| Validation of regulated signalling pathways, spermatogenic cell apoptosis and proliferation, and meiotic spermatocytes by Western blot. Representative Western blot images of PI3K, Akt, p-Akt, caspase-9, Bcl-2, Bax, PCNA, PLZF, REC8, STRA8, and SYCP3.

6). Luan SH et al. ASIC1a promotes hepatic stellate cell activation through the exosomal miR-301a-3p/BTG1 pathway. International Journal of Biological Macromolecules 2022 Jun 30;211:128-139. (PubMed: 35561854) [IF=8.2]

7). He Y et al. Human umbilical cord-derived mesenchymal stem cells improve the function of liver in rats with acute-on-chronic liver failure via downregulating Notch and Stat1/Stat3 signaling. Stem Cell Research & Therapy 2021 Jul 13;12(1):396. (PubMed: 34256837) [IF=7.5]

Application: IHC    Species: Rat    Sample: liver tissue

Fig. 7 The effects of hUC-MSC transplantation on hepatocyte regeneration in ACLF rats. Liver sections from ACLF rats 12 and 24 h post-hUC-MSC transplantation or 0.9% sodium chloride injection as a control were used for immunohistochemical staining of AFP, CK18, HGF, and PCNA and microscopic examination (n = 4/group). Representative photographs are shown (a). Positive staining was quantified and is presented as the mean ± SD (b, c). d Serum levels of HGF were detected by ELISA (4h, n = 3/group; 12h and 24h, n = 4/group). Data are presented as the mean ± SD. *P < 0.05, **P < 0.01, ***P < 0.001

8). Ke Q et al. Dose-and time-effects responses of Nonylphenol on oxidative stress in rat through the Keap1-Nrf2 signaling pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021 Apr 6;216:112185. (PubMed: 33836420) [IF=6.8]

Application: WB    Species: Rat    Sample: liver tissue

Fig. 3. The Keap1 (A), cytoplasmic Nrf2 (B) and nuclear Nrf2 (C) protein expression in rat liver of control and NP treatment (low, middle and high dose) groups for 7, 14 and 28 days. Protein levels were normalized against those of GAPDH and PCNA. Representative immunoblots are also shown below the graphs. Data are presented as mean ± S.D.(n = 3). * p<0.05 and * * p < 0.01 versus C group. & p < 0.05 versus NPL group.

9). Yang S et al. Novel Insights into the Cardioprotective Effects of Calcitriol in Myocardial Infarction. Cells 2022 May 18;11(10):1676. (PubMed: 35626713) [IF=6.0]

10). Huang H et al. Ligustrazine Suppresses Platelet-Derived Growth Factor-BB-Induced Pulmonary Artery Smooth Muscle Cell Proliferation and Inflammation by Regulating the PI3K/AKT Signaling Pathway. The American journal of Chinese medicine 2021 Feb 20;1-23. (PubMed: 33622214) [IF=5.7]

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