2. Signaling Pathways
  3. Cell Cycle/DNA Damage
    Epigenetics
  4. PARP
  5. PARP2 Isoform

PARP2

PARP2 (poly(ADP-ribose) polymerase 2) is a nuclear ADP-ribosyltransferase that catalyzes poly(ADP-ribosyl)ation in response to DNA strand breaks and functions as a key component of the cellular DNA damage response network[1][2]. Mechanistically, PARP2 participates in base excision repair (BER) and single-strand break repair, where it cooperates with DNA repair factors to promote efficient lesion processing and genome maintenance[3][4]. Beyond its canonical repair role, PARP2 contributes to chromatin-associated DNA damage signaling through the generation of branched poly(ADP-ribose) chains, a process that regulates APLF-dependent histone H3 removal and supports DNA double-strand break repair[5]. Disease-associated studies further implicate PARP2 in inflammation, carcinogenesis, cancer progression, metabolic regulation, and oxidative stress responses, highlighting its broader biological relevance beyond genome surveillance[6]. Compared with the closely related isoform PARP1, PARP2 possesses a distinct domain organization and lacks the classical N-terminal DNA-binding zinc-finger region found in PARP1, indicating partially nonredundant mechanisms of damage recognition and activation[1][7]. Recent structural analyses further demonstrate that DNA damage-induced catalytic activation of PARP2 differs mechanistically from PARP1, supporting isoform-specific regulatory features within the PARP family[8]. For experimental applications, PARP2 is frequently investigated using pharmacological PARP inhibitors, including niraparib, olaparib, rucaparib, talazoparib, and other PARP1/2-targeting compounds, which provide valuable tools for dissecting DNA repair pathways and therapeutic vulnerabilities associated with defective genome maintenance[1][9].

PARP2 Related Products (82):

Cat. No. Product Name Effect Purity
  • HY-10162
    Olaparib
    		Inhibitor 99.98%
    Olaparib (AZD2281; KU0059436) is a potent and orally active PARP inhibitor with IC50s of 5 and 1 nM for PARP1 and PARP2, respectively. Olaparib is an autophagy and mitophagy activator. Olaparib cannot cross the intact blood-brain barrier (BBB).
  • HY-15147
    XAV-939
    		Inhibitor 99.91%
    XAV-939 is a Tankyrase inhibitor. XAV-939 has inhibitory activity for TNKS1 and TNKS2 with IC50 values of 5 nM and 2 nM, respectively. XAV-939 also is an enhancer of osteoblastic differentiation of hMSCs. XAV-939 can be used for the research of conditions associated with activated Wnt signaling, such as cancer, fibrotic diseases and conditions associated with low bone formation.
  • HY-16106
    Talazoparib
    		Inhibitor 99.89%
    Talazoparib (BMN-673) is a highly potent, orally active PARP1/2 inhibitor.Talazoparib inhibits PARP1 and PARP2 enzyme activity with Kis of 1.2 nM and 0.87 nM, respectively. Talazoparib has antitumor activity.
  • HY-10619
    Niraparib
    		Inhibitor 99.96%
    Niraparib (MK-4827) is a highly potent and orally bioavailable PARP1 and PARP2 inhibitor with IC50s of 3.8 and 2.1 nM, respectively. Niraparib leads to inhibition of repair of DNA damage, activates apoptosis and shows anti-tumor activity.
  • HY-132167
    Saruparib
    		Inhibitor 99.76%
    Saruparib (AZD5305) is a potent, orally active and selective PARP inhibitor and trapper with IC50 values of 3 nM and 1400 nM for PARP1 and PARP2, respectively. Saruparib has anti-proliferative activity and inhibits growth in cells with deficiencies in DNA repair.
  • HY-183013
    PROTAC PARP2 degrader-1
    		Degrader
    PROTAC PARP2 degrader-1 is an orally active PARP2 PROTAC degrader with a DC50 of 2 μM. PROTAC PARP2 degrader-1 potently inhibits the enzymatic activities of PARP1 (IC50 = 2.74 nM) and PARP2 (IC50 = 0.32 nM), with approximately 10-fold higher selectivity for PARP2. PROTAC PARP2 degrader-1 induces cell cycle arrest and apoptosis, and exhibits significant anti-tumor efficacy in mouse models. PROTAC PARP2 degrader-1 can be used for the research of triple-negative breast cancer.
  • HY-130646
    iVeliparib-AP6
    		Degrader
    iVeliparib-AP6 is a proteolysis-targeting chimera (PROTAC) molecule designed based on Veliparib (HY-10129), which targets PARP1/2. The DC50s of iVeliparib-AP6 for inducing the degradation of PARP1 and PARP2 are 36 nM and 63 nM, respectively, and its IC50s are 69 nM and 21 nM, respectively. iVeliparib-AP6 contains a Veliparib-based PARP inhibitor warhead linked to a CRBN E3 ligase binder; it uses Thalidomide (HY-14658) as a ligand to recruit CRBN E3 ubiquitin ligase and exerts the PARP2 degradation mechanism.
  • HY-185459
    PCIP-1
    		Inhibitor
    PCIP-1 is a PARP2 inhibitor. PCIP-1 recruits BET proteins to PARP2 to inhibit DNA repair, acts via event-driven pharmacology, and does not inhibit PARP-catalyzed PARylation. PCIP-1 inhibits DNA repair, thereby inducing synthetic lethality in homologous recombination-deficient cancer cells and increasing the sensitivity of PARP1-knockout cells. PCIP-1 can be used in the research of homologous recombination-deficient cancers, T-cell acute lymphoblastic leukemia, and BRCA-mutant cancers.
  • HY-10617A
    Rucaparib
    		Inhibitor 99.96%
    Rucaparib (AG014699) is an orally active, potent inhibitor of PARP proteins (PARP-1, PARP-2 and PARP-3) with a Ki of 1.4 nM for PARP1. Rucaparib is a modest hexose-6-phosphate dehydrogenase (H6PD) inhibitor. Rucaparib has the potential for castration-resistant prostate cancer (CRPC) research.
  • HY-10129
    Veliparib
    		Inhibitor 99.77%
    Veliparib (ABT-888) is a potent PARP inhibitor, inhibiting PARP1 and PARP2 with Kis of 5.2 and 2.9 nM, respectively.
  • HY-13688A
    PJ34
    		Inhibitor 99.66%
    PJ34 is a potent specific inhibitor of PARPl/2 with IC50 of 110 nM and 86 nM, respectively.
  • HY-10619A
    Niraparib hydrochloride
    		Inhibitor 99.41%
    Niraparib hydrochloride (MK-4827 hydrochloride) is a highly potent and orally bioavailable PARP1 and PARP2 inhibitor with IC50s of 3.8 and 2.1 nM, respectively. Niraparib hydrochloride leads to inhibition of repair of DNA damage, activates apoptosis and shows anti-tumor activity.
  • HY-10617
    Rucaparib phosphate
    		Inhibitor 99.76%
    Rucaparib (AG014699) phosphate is an orally active, potent inhibitor of PARP proteins (PARP-1, PARP-2 and PARP-3) with a Ki of 1.4 nM for PARP1. Rucaparib phosphate is a modest hexose-6-phosphate dehydrogenase (H6PD) inhibitor. Rucaparib phosphate has the potential for castration-resistant prostate cancer (CRPC) research.
  • HY-13990
    NVP-TNKS656
    		Inhibitor 99.66%
    NVP-TNKS656 is a highly potent, selective, and orally active TNKS2 inhibitor with IC50 of 6 nM, and is > 300 fold selectivity against PARP1 and PARP2.
  • HY-10619B
    Niraparib tosylate
    		Inhibitor 99.99%
    Niraparib tosylate (MK-4827 tosylate) is a highly potent and orally bioavailable PARP1 and PARP2 inhibitor with an IC50 of 3.8 and 2.1 nM, respectively. Niraparib tosylate leads to inhibition of repair of DNA damage, activates apoptosis and shows anti-tumor activity.
  • HY-148566
    OUL232
    		Inhibitor 99.86%
    OUL232 is a potent inhibitor of mono-ARTs PARP7, PARP10, PARP11, PARP12, PARP14, and PARP15. OUL232 is the most potent PARP10 inhibitor described to date (IC50=7.8 nM), as well as the first PARP12 inhibitor ever reported.
  • HY-12418
    Stenoparib
    		Inhibitor 98.0%
    Stenoparib (E7449) is a potent PARP1 and PARP2 inhibitor and also inhibits TNKS1 and TNKS2, with IC50s of 2.0, 1.0, ～50 and ～50 nM for PARP1, PARP2, TNKS1 and TNKS2, respectively, using 32P-NAD+ as substrate.
  • HY-14478
    UPF 1069
    		Inhibitor 99.02%
    UPF 1069 is a PARP inhibitor, with IC50s of 8 and 0.3 μM for PARP-1 and PARP-2, respectively.
  • HY-102003
    Rucaparib monocamsylate
    		Inhibitor 99.91%
    Rucaparib (AG014699) monocamsylate is an orally active, potent inhibitor of PARP proteins (PARP-1, PARP-2 and PARP-3) with a Ki of 1.4 nM for PARP1. Rucaparib monocamsylate is a modest hexose-6-phosphate dehydrogenase (H6PD) inhibitor. Rucaparib monocamsylate has the potential for castration-resistant prostate cancer (CRPC) research.
  • HY-150207
    RBN-3143
    		Inhibitor 99.29%
    RBN-3143 is a potent and NAD+-competitive catalytic PARP14 inhibitor with an IC50 value of 4 nM. RBN-3143 inhibits PARP14-mediated ADP-ribosylation and stabilizes PARP14 in cell lines. RBN-3143 can be used in research of lung inflammation.
Cat. No. Product Name / Synonyms Application Reactivity