PER2 Antibody

Code CSB-PA017787LA01HU
Size US$166
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  • IHC image of CSB-PA017787LA01HU diluted at 1:300 and staining in paraffin-embedded human cervical cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a biotinylated secondary antibody and visualized using an HRP conjugated SP system.

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Product Details

Full Product Name
Rabbit anti-Homo sapiens (Human) PER2 Polyclonal antibody
Uniprot No.
Target Names
PER2
Alternative Names
Circadian clock protein PERIOD 2 antibody; FASPS antibody; FASPS1 antibody; hPER 2 antibody; hPER2 antibody; KIAA0347 antibody; OTTHUMP00000164476 antibody; PER 2 antibody; PER2 antibody; PER2_HUMAN antibody; Period 2 antibody; Period 2 isoform 1 antibody; Period circadian clock 2 antibody; Period circadian protein 2 antibody; Period circadian protein homolog 2 antibody; Period homolog 2 (Drosophila) antibody; Period homolog 2 antibody; Period; Drosophila; homolog of; 2 antibody; Period2 antibody
Raised in
Rabbit
Species Reactivity
Human
Immunogen
Recombinant Human Period circadian protein homolog 2 protein (923-1051AA)
Immunogen Species
Homo sapiens (Human)
Conjugate
Non-conjugated

The PER2 Antibody (Product code: CSB-PA017787LA01HU) is Non-conjugated. For PER2 Antibody with conjugates, please check the following table.

Available Conjugates
Conjugate Product Code Product Name Application
HRP CSB-PA017787LB01HU PER2 Antibody, HRP conjugated ELISA
FITC CSB-PA017787LC01HU PER2 Antibody, FITC conjugated
Biotin CSB-PA017787LD01HU PER2 Antibody, Biotin conjugated ELISA
Clonality
Polyclonal
Isotype
IgG
Purification Method
>95%, Protein G purified
Concentration
It differs from different batches. Please contact us to confirm it.
Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Tested Applications
ELISA, IHC
Recommended Dilution
Application Recommended Dilution
IHC 1:200-1:500
Troubleshooting and FAQs
Storage
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

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Target Background

Function
Transcriptional repressor which forms a core component of the circadian clock. The circadian clock, an internal time-keeping system, regulates various physiological processes through the generation of approximately 24 hour circadian rhythms in gene expression, which are translated into rhythms in metabolism and behavior. It is derived from the Latin roots 'circa' (about) and 'diem' (day) and acts as an important regulator of a wide array of physiological functions including metabolism, sleep, body temperature, blood pressure, endocrine, immune, cardiovascular, and renal function. Consists of two major components: the central clock, residing in the suprachiasmatic nucleus (SCN) of the brain, and the peripheral clocks that are present in nearly every tissue and organ system. Both the central and peripheral clocks can be reset by environmental cues, also known as Zeitgebers (German for 'timegivers'). The predominant Zeitgeber for the central clock is light, which is sensed by retina and signals directly to the SCN. The central clock entrains the peripheral clocks through neuronal and hormonal signals, body temperature and feeding-related cues, aligning all clocks with the external light/dark cycle. Circadian rhythms allow an organism to achieve temporal homeostasis with its environment at the molecular level by regulating gene expression to create a peak of protein expression once every 24 hours to control when a particular physiological process is most active with respect to the solar day. Transcription and translation of core clock components (CLOCK, NPAS2, ARNTL/BMAL1, ARNTL2/BMAL2, PER1, PER2, PER3, CRY1 and CRY2) plays a critical role in rhythm generation, whereas delays imposed by post-translational modifications (PTMs) are important for determining the period (tau) of the rhythms (tau refers to the period of a rhythm and is the length, in time, of one complete cycle). A diurnal rhythm is synchronized with the day/night cycle, while the ultradian and infradian rhythms have a period shorter and longer than 24 hours, respectively. Disruptions in the circadian rhythms contribute to the pathology of cardiovascular diseases, cancer, metabolic syndrome and aging. A transcription/translation feedback loop (TTFL) forms the core of the molecular circadian clock mechanism. Transcription factors, CLOCK or NPAS2 and ARNTL/BMAL1 or ARNTL2/BMAL2, form the positive limb of the feedback loop, act in the form of a heterodimer and activate the transcription of core clock genes and clock-controlled genes (involved in key metabolic processes), harboring E-box elements (5'-CACGTG-3') within their promoters. The core clock genes: PER1/2/3 and CRY1/2 which are transcriptional repressors form the negative limb of the feedback loop and interact with the CLOCK|NPAS2-ARNTL/BMAL1|ARNTL2/BMAL2 heterodimer inhibiting its activity and thereby negatively regulating their own expression. This heterodimer also activates nuclear receptors NR1D1/2 and RORA/B/G, which form a second feedback loop and which activate and repress ARNTL/BMAL1 transcription, respectively. PER1 and PER2 proteins transport CRY1 and CRY2 into the nucleus with appropriate circadian timing, but also contribute directly to repression of clock-controlled target genes through interaction with several classes of RNA-binding proteins, helicases and others transcriptional repressors. PER appears to regulate circadian control of transcription by at least three different modes. First, interacts directly with the CLOCK-ARTNL/BMAL1 at the tail end of the nascent transcript peak to recruit complexes containing the SIN3-HDAC that remodel chromatin to repress transcription. Second, brings H3K9 methyltransferases such as SUV39H1 and SUV39H2 to the E-box elements of the circadian target genes, like PER2 itself or PER1. The recruitment of each repressive modifier to the DNA seems to be very precisely temporally orchestrated by the large PER complex, the deacetylases acting before than the methyltransferases. Additionally, large PER complexes are also recruited to the target genes 3' termination site through interactions with RNA-binding proteins and helicases that may play a role in transcription termination to regulate transcription independently of CLOCK-ARTNL/BMAL1 interactions. Recruitment of large PER complexes to the elongating polymerase at PER and CRY termination sites inhibited SETX action, impeding RNA polymerase II release and thereby repressing transcriptional reinitiation. May propagate clock information to metabolic pathways via the interaction with nuclear receptors. Coactivator of PPARA and corepressor of NR1D1, binds rhythmically at the promoter of nuclear receptors target genes like ARNTL or G6PC1. Directly and specifically represses PPARG proadipogenic activity by blocking PPARG recruitment to target promoters and thereby inhibiting transcriptional activation. Required for fatty acid and lipid metabolism, is involved as well in the regulation of circulating insulin levels. Plays an important role in the maintenance of cardiovascular functions through the regulation of NO and vasodilatatory prostaglandins production in aortas. Controls circadian glutamate uptake in synaptic vesicles through the regulation of VGLUT1 expression. May also be involved in the regulation of inflammatory processes. Represses the CLOCK-ARNTL/BMAL1 induced transcription of BHLHE40/DEC1 and ATF4. Negatively regulates the formation of the TIMELESS-CRY1 complex by competing with TIMELESS for binding to CRY1.
Gene References into Functions
  1. These results indicate that the loss of Per2 is one of the factors underlying tumourigenesis in nonsmall cell lung cancer , and it may function as a novel molecular target for nonsmall cell lung cancer . PMID: 30226549
  2. The results of this study suggest that loss of PER2 expression is closely associated with the genesis and development of OSCC and that PER2 may be an important prognostic biomarker in OSCC. PMID: 29115399
  3. Results indicate that PER2 plays a similar role in both mouse and human mammary epithelial cells and regulates cell fate commitment, with a trend towards a bipotent cell type PMID: 29490985
  4. The interplay between Sirt1 and Per2 modulates aging gene expression and circadian-clock maintenance. PMID: 27346580
  5. The results suggest that the PER2 gene may be a risk factor for RA, and expression of the PER2 protein may be affected by inflammation. Therefore, PER2 may contribute to the pathogenesis of RA. PMID: 28498398
  6. p53's nuclear shuttling was significantly favored by ectopic expression of Per2 and reduced because of Per2 down-regulation. PMID: 27834218
  7. In human oral squamous cell carcinoma cells PER2 through the regulation of the numerous important downstream tumor-related genes, plays a major role in tumor suppression. PMID: 28535015
  8. Data suggest that Per2 is not only a tumor suppressor gene but can also be regarded as a regulator of MDM2-TP53 pathway. PMID: 27036047
  9. the clock gene PER2 polymorphisms account for the physiological variation of melatonin suppression as circadian light sensitivity PMID: 28650999
  10. This study showed that Lack of Association between Genetic Polymorphism of PER2 gene with Late Onset Depression and Alzheimer's Disease in a Sample of a Brazilian Population PMID: 27335043
  11. Results show that PER2 expression and stability is regulated by CSNK1D which can itself be regulated by phosphorylation on its regulatory domain in a site-specific manner. PMID: 28545154
  12. miR-21 as cardioprotective downstream target of Per2 PMID: 28448534
  13. Per2 is closely and negatively associated with the occurrence and development of ovarian cancer. Per2 expression, and the clinical stage and TNM development of ovarian cancer were identified to be correlated. PMID: 27082164
  14. results indicate the involvement of PER2 in the homeostatic process of sleep PMID: 27089043
  15. Immunostaining of CLOCK and PER2 protein was detected in the granulosa cells of dominant antral follicles but was absent in the primordial, primary, or preantral follicles of human ovaries.Oscillating expression of the circadian gene PER2 can be induced by testosterone in human granulosa cells in vitro. Expression of STAR also displayed an oscillating pattern after testosterone stimulation PMID: 27614897
  16. clock gene Per2 plays an important role in cell cycle progression and the balance of cell proliferation and apoptosis by regulation of the cyclin/CDK/CKI cell cycle network. PMID: 27035749
  17. Low Per2 gene expression is associated with colorectal liver metastases. PMID: 27492458
  18. The levels of circadian protein Per2 were significantly increased and E-cadherin was significantly decreased in the tissue of human esophageal cancer with metastasis as compared with non-metastatic esophageal cancer. PMID: 26898709
  19. The effect of genotype AC or allele C of Per2 on insomnia was relatively stronger than that of high work stress, suggesting that individual's susceptibility should be taken into consideration when intervening and controlling insomnia of workers. PMID: 26174845
  20. possible circadian rhythm in full-term placental expression PMID: 26247999
  21. Data suggest that PER2 functions as the only clock gene needed to maintain undifferentiated state of endothelial progenitor cells; expression of PER2-regulatory microRNA, miR-92a, is down-regulated in diabetic retinopathy. PMID: 26283734
  22. ARNTL and PER2 genetic variants associate in psychotic disorders Depresssion PMID: 25799324
  23. Data indicate that the period circadian protein Per2 modulates hp53 protein signaling in response to genotoxic stress. PMID: 25411341
  24. We did not observe any significant difference in Bone Mineral Density according to the genotype of the PER2 c.3731G> A polymorphism in postmenopausal Korean women. PMID: 24678593
  25. deregulated of the PER2 genes in glioma cells in deregulation of the cell cycle favoring proliferation of tumor cells. PMID: 25313752
  26. RNA sequencing revealed that premature inhibition of PER2 by small interfering RNA knockdown leads to a grossly disorganized decidual response. PMID: 25573754
  27. The biological effects of the per2 gene and its protein product, PER2, in the limbic system. [Review] PMID: 25216061
  28. The findings place hPer2 directly at the heart of the hp53-mediated response by ensuring that basal levels of hp53 are available to precondition the cell when a rapid, hp53-mediated, transcriptional response is needed. PMID: 25103245
  29. Deregulated expression of the PER2 genes is common in glioma, and inactivation of PER2 expression in glioma cells may result in deregulation of the cell cycle, thus promoting the proliferation of glioma cells. PMID: 25688509
  30. The results of this study present no evidence for an association of PER2 polymorphisms with juvenile myoclonic epilepsy. PMID: 24892753
  31. Per1 and Per2 may play important roles in tumor development, invasion and prognosis, and Per2 may serve as a novel prognostic biomarker of human gastric cancer. PMID: 24551282
  32. Our work represents the first evidence that the Per2S splicing isoform is a clock component expressed in human cells localizing in the nucleolus. PMID: 24202686
  33. Expression of cell cycle regulatory factors hus1, gadd45a, rb1, cdkn2a and mre11a correlates with expression of clock gene per2 in human colorectal carcinoma tissue. PMID: 24062075
  34. The locus rs2304669 on Per2 gene is associated with breast cancer risk. Genetic variation of circadian clock genes may increase the susceptibility to breast cancer. Therefore, it may become an important biomarker of susceptibility to breast cancer. PMID: 23880009
  35. altered post-translational regulation of PER2 protein in the patients with familial advanced sleep-phase disorder PMID: 22939700
  36. circadian protein PER2 counteracts viral replication PMID: 23593233
  37. findings clearly demonstrate the tumor suppression function of PER2 and elucidate a pathway by which hypoxia promotes EMT via degradation of PER2 PMID: 23836662
  38. The findings may suggest a role of the circadian rhythm gene PER2 in both the drinking patterns of young adults and in moderating the impact of severe life stress on hazardous drinking in experienced alcohol users. PMID: 23533602
  39. PER2 regulates AKT activity PMID: 22905719
  40. These results provide preliminary evidence for the role of the PER2 gene in regulating striatal D2R availability in the human brain and in vulnerability for cocaine addiction. PMID: 22832851
  41. Rhythmic circadian expression of PER2 was found in the control group, but the ADHD group did not display a significant circadian rhythm in PER2. PMID: 22105622
  42. DNA methylation levels at different CpG sites of CLOCK, BMAL1 and PER2 genes were analyzed in sixty normal-weight, overweight and obese women following a 16-week weight reduction program. PMID: 23003921
  43. This study showed for the first time that gender altered the expression of a circadian gene, Per2, in an infectious disease. PMID: 22984121
  44. C/EBPalpha with its associated direct core clock gene target, PER2, are highly deregulated in DLBCL, suggesting an important tumor suppressive pathway in the pathogenesis of this lymphoma entity PMID: 22260161
  45. Expression of period 2 transgene in the suprachiasmatic nucleus is affected by zeitgeber time (ZT) with a marginal interaction effect of age, genotype, and ZT. PMID: 22634208
  46. the rs2304672 polymorphism in the PER2 gene locus may influence lipid metabolism by interacting with the plasma total SFA concentration in participants with MetS. PMID: 22623394
  47. studies identify adenosine-elicited stabilization of Per2 in the control of HIF-dependent cardiac metabolism and ischemia tolerance and implicate Per2 stabilization PMID: 22504483
  48. Findings are the first to indicate that circadian genes have a significant impact upon circadian-relevant reward circuitry in humans. PMID: 22137505
  49. Low Per2 is associated with colorectal carcinoma PMID: 22166120
  50. This study demonstrated a novel mechanism for alcohol-induced intestinal hyperpermeability through stimulation of intestinal circadian Per2 and CLOCK gene expression. PMID: 21463335

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Involvement in disease
Advanced sleep phase syndrome, familial, 1 (FASPS1)
Subcellular Location
[Isoform 1]: Nucleus. Cytoplasm. Cytoplasm, perinuclear region. Note=Nucleocytoplasmic shuttling is effected by interaction with other circadian core oscillator proteins and/or by phosphorylation. Translocate to the nucleus after phosphorylation by CSNK1D or CSNK1E. Also translocated to the nucleus by CRY1 or CRY2. PML regulates its nuclear localization.; [Isoform 2]: Nucleus, nucleolus.
Tissue Specificity
Widely expressed. Found in heart, brain, placenta, lung, liver, skeleatal muscle, kidney and pancreas. High levels in skeletal muscle and pancreas. Low levels in lung. Isoform 2 is expressed in keratinocytes (at protein level).
Database Links

HGNC: 8846

OMIM: 603426

KEGG: hsa:8864

STRING: 9606.ENSP00000254657

UniGene: Hs.58756

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