Hamburger Menu Button
Thermo Fisher Scientific Logo
Sign in
Don't have an account ? Create Account
  • Products
    • Antibodies
    • Cell Culture Media
    • Chemicals
    • Chromatography Columns and Cartridges
    • Lab Equipment
    • Lab Plasticware and Supplies
    • Microplates
    • Oligos, Primers, Probes and Genes
    • TaqMan Real-Time PCR Assays
    • Greener Products
    • See all product categories
  • Applications
    • Bioprocessing
    • Cell Culture and Transfection
    • Cell and Gene Therapy
    • Chromatography
    • Molecular Testing
    • Digital Solutions
    • DNA and RNA Extraction and Analysis
    • Spectroscopy, Elemental and Isotope Analysis
    • See all applications and techniques
  • Services
    • 360° CDMO and CRO Solutions
    • CDMO Services
    • CRO Services
    • Custom Services
    • Enterprise Services
    • Financial and Leasing Services
    • Instrument Services
    • Lab Informatics
    • OEM and Commercial Supply
    • Training Services
    • Unity Lab Services
    • See all services
  • Help and Support
    • How to Order
    • Instrument Support
    • Learning Centers
    • Register for an Account
    • Technical Support Centers
    • See all help and support topics
  • Popular
    • TaqMan Real-Time PCR Assays
      TaqMan Real-Time PCR Assays
    • Antibodies
      Antibodies
    • Oligos, Primers & Probes
      Oligos, Primers & Probes
    • GeneArt Gene Synthesis
      GeneArt Gene Synthesis
    • Cell Culture Plastics
      Cell Culture Plastics
  • Contact Us
  • Quick Order
  • Order Status and Tracking
  • Documents and Certificates
Thermo Fisher Scientific Logo

Search Thermo Fisher Scientific

Search All
Search button Close
          • Order Status
          • Quick Order
          • Sign in
            Sign in
            Don't have an account ? Create Account
            • Account
            • Check Order Status
            • Aspire Member Program
            • Connect: Lab, Data, Apps
            • Custom Products & Projects
            • Services Central

          Disclaimer

          Clicking the images or links will redirect you to a website hosted by BenchSci that provides third-party scientific content. Neither the content nor the BenchSci technology and processes for selection have been evaluated by us; we are providing them as-is and without warranty of any kind, including for use or application of the Thermo Fisher Scientific products presented.

          • Primary Antibodies ›
          • Chk1 Antibodies

          Invitrogen

          Phospho-Chk1 (Ser345) Recombinant Rabbit Monoclonal Antibody (Chk1S345-R3F9)

          View all (69) Chk1 antibodies

          Promotion

          View available promotion(s)

          Promo code: {{promo.promoCode}} {{promo.promoDescription}}. {{$productOrderCtrl.translations['antibody.pdp.commerceCard.promotion.learnmore']}}

          Datasheet
          Protocols
          Questions & Answers
          Datasheet
          Protocols
          Questions & Answers

          Cite Phospho-Chk1 (Ser345) Recombinant Rabbit Monoclonal Antibody (Chk1S345-R3F9)

          • Antibody Testing Data (4)
          Phospho-Chk1 (Ser345) Antibody in Flow Cytometry (Flow)
          Group 53 Created with Sketch.
          Phospho-Chk1 (Ser345) Antibody in Flow Cytometry (Flow)
          Group 53 Created with Sketch.

          FIGURE: 1 / 4

          {{ $ctrl.currentElement.advancedVerification.fullName }}
          {{ $ctrl.currentElement.advancedVerification.text }}

          Phospho-Chk1 (Ser345) Antibody (MA5-37019) in Flow

          Flow cytometry of Phospho-Chk1 (Ser345) using HeLa cells. Samples were incubated in monoclonal Phospho-Chk1 (Ser345) antibody (Product # MA5-37019) with a dilution of 0.01 µg/mL. Images correspond with the following conditions: negative control (light blue), untreated (red), treated with calyculin A (green), untreated and blocked with phospho-peptide (black), CalA and blocked with phospho peptide (gold), un... View More {{ $ctrl.currentElement.advancedVerification.fullName }} validation info. View more
          Published figure supplied by benchsci-logo
          PMID: {{$ctrl.currentElement.benchSciPubmedId}}
          View Product

          {{$ctrl.videoDesc}}

          {{$ctrl.videoLongDesc}}

          Phospho-Chk1 (Ser345) Antibody in Flow Cytometry (Flow)
          Phospho-Chk1 (Ser345) Antibody in Flow Cytometry (Flow)
          Phospho-Chk1 (Ser345) Antibody in Flow Cytometry (Flow)
          Phospho-Chk1 (Ser345) Antibody in Flow Cytometry (Flow)

          Product Details

          MA5-37019

          Applications
          Tested Dilution
          Publications

          Flow Cytometry (Flow)

          1-1,000 ng/mL
          -
          Product Specifications

          Species Reactivity

          Human, Mouse, Rat

          Host/Isotype

          Rabbit / IgG, kappa

          Expression System

          HEK293 cells

          Class

          Recombinant Monoclonal

          Type

          Antibody

          Clone

          Chk1S345-R3F9

          Immunogen

          A synthetic phospho-peptide corresponding to residues surrounding Ser345 of human phospho Chk1.
          View immunogen

          Conjugate

          Unconjugated Unconjugated Unconjugated
          • APC 
          • FITC
          • PE 
          • Request custom conjugation

          Form

          Liquid

          Concentration

          0.5 mg/mL

          Purification

          Protein A/G

          Storage buffer

          PBS, pH 7.4

          Contains

          0.02% sodium azide

          Storage conditions

          -20°C

          Shipping conditions

          Ambient (domestic); Wet ice (international)

          RRID

          AB_2896954

          Product Specific Information

          Recombinant rabbit monoclonal antibodies are produced using in vitro expression systems. The expression systems are developed by cloning in the specific antibody DNA sequences from immunoreactive rabbits. Then, individual clones are screened to select the best candidates for production. The advantages of using recombinant rabbit monoclonal antibodies include: better specificity and sensitivity, lot-to-lot consistency, animal origin-free formulations, and broader immunoreactivity to diverse targets due to larger rabbit immune repertoire.

          Target Information

          CHEK1 (CHK1) is a serine/threonine protein kinase involved in preventing replication when DNA integrity is compromised. CHK1 is a key mediator in the DNA damage-induced checkpoint network. CHK1 is an evolutionarily conserved protein kinase that functions to ensure genomic integrity upon genotoxic stress. When the G2 or S checkpoint is abrogated by the inhibition of CHK1, p53-deficient cancer cells undergo mitotic catastrophe and eventually apoptosis, whereas normal cells are still arrested in the G1 phase. Thus, CHK1 inhibitors can preferentially potentiate the efficacy of DNA damaging agents in cancer cells, and Chk1 is an attractive therapeutic target for cancer treatment, especially since approximately 50% of all human cancers are p53-deficient.

          For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.

          References (0)

          Have you cited this product in a publication?
          Let us know so we can reference it here.
          Cite this product

          Bioinformatics

          Protein Aliases: Cell cycle checkpoint kinase; checkpoint kinase 1 homolog; Checkpoint kinase-1; Checkpoint, S. pombe, homolog of, 1; CHK1 checkpoint homolog; Chk1-S; homolog of Chk1-S; HRD1 Protein; rad27 homolog; Serine/threonine-protein kinase Chk1; Synoviolin

          View more View less

          Gene Aliases: C85740; CHEK1; CHK1; rad27

          View more View less

          UniProt ID: (Human) O14757, (Rat) Q91ZN7, (Mouse) O35280

          View more View less

          Entrez Gene ID: (Human) 1111, (Rat) 140583, (Mouse) 12649

          View more View less

          Function(s)
          protein kinase activity protein serine/threonine kinase activity protein binding ATP binding kinase activity histone kinase activity (H3-T11 specific) nucleotide binding transferase activity transferase activity, transferring phosphorus-containing groups
          Process(es)
          DNA damage checkpoint G2/M transition of mitotic cell cycle DNA repair protein phosphorylation cellular response to DNA damage stimulus DNA damage induced protein phosphorylation regulation of gene expression regulation of double-strand break repair via homologous recombination regulation of transcription from RNA polymerase II promoter in response to UV-induced DNA damage negative regulation of G2/M transition of mitotic cell cycle peptidyl-threonine phosphorylation histone H3-T11 phosphorylation regulation of cell proliferation negative regulation of mitotic nuclear division regulation of mitotic centrosome separation chromatin-mediated maintenance of transcription cellular response to mechanical stimulus cellular response to organic substance cellular response to caffeine negative regulation of DNA biosynthetic process regulation of histone H3-K9 acetylation cell cycle phosphorylation G2 DNA damage checkpoint DNA replication replicative senescence regulation of signal transduction by p53 class mediator
          It has to be done as per old AB suggested Products section.
          guarantee_icon

          Performance Guarantee

          If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*

          Learn more
          help_icon

          We're here to help

          Get expert recommendations for common problems or connect directly with an on staff expert for technical assistance related to applications, equipment and general product use.

          Contact tech support
          Ordering Plus Icon Minus Icon
          • Order Status
          • Order Help
          • Quick Order
          • Supply Center
          • eProcurement
          Support Plus Icon Minus Icon
          • Help and Support
          • Contact Us
          • Technical Support Centers
          • Documents and Certificates
          • Report a Site Issue
          Resources Plus Icon Minus Icon
          • Learning Centers
          • Promotions
          • Events and Webinars
          • Social Media
          About Thermo Fisher Plus Icon Minus Icon
          • About Us
          • Careers
          • Investors
          • News
          • Social Responsibility
          • Trademarks
          • Consumer Health Data Privacy Policy
          Our Portfolio Plus Icon Minus Icon
          • Thermo Scientific
          • Applied Biosystems
          • Invitrogen
          • Gibco
          • Ion Torrent
          • Fisher Scientific
          • Unity Lab Services
          • Patheon
          • PPD
          • Terms & Conditions
          • Privacy Information Center
          • Price & Freight Policy
          © 2006-2025 Thermo Fisher Scientific Inc. All rights reserved. All trademarks are the property of Thermo Fisher Scientific and its subsidiaries unless otherwise specified.
          United States flag icon
          United States

          Your items have has been added!


          Host server : magellan-search-67c77f6dc7-n6nf2:80/100.66.135.186:80.
          git-commit: 545e792480003146e539d624bd2a21b51d198228
          git-url: https://github.com/thermofisher/magellan-search
          git-branch: release/2.31.0-2025.06.23-1.0