PBK/TOPK Protein, Human (sf9, His)

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PBK/TOPK Protein, a mitosis-specific kinase, phosphorylates MAP kinase p38, emphasizing its specific role in cell division. Implicated in lymphoid cell activation, PBK/TOPK has broader impacts on immune responses. When phosphorylated, it forms a complex with TP53, destabilizing TP53 and dampening the G2/M checkpoint in doxorubicin-induced DNA damage, highlighting its multifaceted functions in cell cycle control and genotoxic stress responses. PBK/TOPK Protein, Human (sf9, His) is the recombinant human-derived PBK/TOPK protein, expressed by Sf9 insect cells , with C-His labeled tag.

For research use only. We do not sell to patients.
  • Species: Human
  • Source: Sf9 insect cells
  • Storage:
    Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
  • Help & FAQs

Biological Activity

Description

PBK/TOPK Protein, a mitosis-specific kinase, phosphorylates MAP kinase p38, emphasizing its specific role in cell division. Implicated in lymphoid cell activation, PBK/TOPK has broader impacts on immune responses. When phosphorylated, it forms a complex with TP53, destabilizing TP53 and dampening the G2/M checkpoint in doxorubicin-induced DNA damage, highlighting its multifaceted functions in cell cycle control and genotoxic stress responses. PBK/TOPK Protein, Human (sf9, His) is the recombinant human-derived PBK/TOPK protein, expressed by Sf9 insect cells , with C-His labeled tag.

Background

PBK/TOPK, a mitosis-specific protein kinase, exhibits activity by phosphorylating MAP kinase p38. Its functional involvement appears to be confined to mitotic processes, emphasizing a specific role during cell division. Additionally, PBK/TOPK is implicated in the activation of lymphoid cells, suggesting a broader impact on immune responses. Notably, when phosphorylated, PBK/TOPK forms a complex with TP53, resulting in TP53 destabilization and a dampening of the G2/M checkpoint in response to DNA damage induced by doxorubicin. This intricate regulation underscores the multifaceted functions of PBK/TOPK in cell cycle control and cellular responses to genotoxic stress.

Verified Bioactivity

The kinase activity of this recombinant protein is testing in progress, we cannot offer a guarantee yet.

Technical Parameters

  • Species Human
  • Source Sf9 insect cells
  • Tag C-His
  • Accession
  • Gene ID
  • Molecular Construction
    • N-term
    • PBK (M1-V322)
      Accession # Q96KB5-1
    • His
    • C-term
  • Protein Length

    Full Length of Isoform-1

  • Synonyms

    PBK; Lymphokine-Activated Killer T-Cell-Originated Protein Kinase; PDZ Binding Kinase; Spermatogenesis-Related Protein Kinase; Nori-3; Epididymis Luminal Protein 164; TOPK; MAPKK-Like Protein Kinase; CT84; FLJ14385; SPK; Serine/Threonine Protein Kinase; T

  • AA Sequence

    MEGISNFKTPSKLSEKKKSVLCSTPTINIPASPFMQKLGFGTGVNVYLMKRSPRGLSHSPWAVKKINPICNDHYRSVYQKRLMDEAKILKSLHHPNIVGYRAFTEANDGSLCLAMEYGGEKSLNDLIEERYKASQDPFPAAIILKVALNMARGLKYLHQEKKLLHGDIKSSNVVIKGDFETIKICDVGVSLPLDENMTVTDPEACYIGTEPWKPKEAVEENGVITDKADIFAFGLTLWEMMTLSIPHINLSNDDDDEDKTFDESDFDDEAYYAALGTRPPINMEELDESYQKVIELFSVCTNEDPKDRPSAAHIVEALETDV

  • Predicted Molecular Mass

    37.6 kDa

  • Molecular Weight

    Approximately 38-45 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

  • Purity

    ≥ 95%, as determined by Bis-Tris PAGE.

Product Properties

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Storage & Stability

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Calculators

Reconstitution Calculator

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) Volume (to add to vial)
=
Mass (in vial) Mass (in vial)
÷
Desired Reconstitution Concentration Desired Reconstitution Concentration
Dilution Calculator

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

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The Specific Activity Calculator Equation
  • Specific Activity (Unit/mg)
  • Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) Specific Activity (Unit/mg)
Unit/mg
= 106 ÷
Biological Activity (ED50) Biological Activity (ED50)
106 ÷
ng/mL
MOQ
Minimum order quantity
100 mg

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