JavaScript is disabled in your browser. Please enable JavaScript to view this website.
AB236871

Anti-PBK/SPK antibody [EPR21982]

Be the first to review this product! Submit a review

|

(1 Publication)

Rabbit Recombinant Monoclonal PBK/SPK antibody. Suitable for IP, WB, Flow Cyt (Intra), IHC-P and reacts with Human, Rat samples. Cited in 1 publication.

View Alternative Names

TOPK, PBK, Lymphokine-activated killer T-cell-originated protein kinase, Cancer/testis antigen 84, MAPKK-like protein kinase, Nori-3, PDZ-binding kinase, Spermatogenesis-related protein kinase, T-LAK cell-originated protein kinase, CT84, SPK

9 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PBK/SPK antibody [EPR21982] (AB236871)

Immunohistochemical analysis of paraffin-embedded human esophagus cancer tissue labeling PBK/SPK with ab236871 at 1/2000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) Ready to use. Positive staining in human esophagus cancer (PMID : 27919968) is observed. Counterstained with hematoxylin.

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) Ready to use.

Heat mediated antigen retrieval using ab93684 (Tris/EDTA buffer, pH 9.0).

Flow Cytometry (Intracellular) - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • Flow Cyt (Intra)

Unknown

Flow Cytometry (Intracellular) - Anti-PBK/SPK antibody [EPR21982] (AB236871)

Intracellular flow cytometric analysis of 4% paraformaldehyde-fixed, 90% methanol-permeabilized HepG2 (human liver hepatocellular carcinoma cell line) cell line labeling PBK/SPK with ab236871 at 1/50 dilution (red) compared with a Rabbit IgG, monoclonal [EPR25A] - Isotype Control (ab172730) (black) and an unlabeled control (cells without incubation with primary antibody and secondary antibody) (blue). Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (ab150077) at 1/2000 dilution was used as the secondary antibody.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PBK/SPK antibody [EPR21982] (AB236871)

Immunohistochemical analysis of paraffin-embedded human gastric cancer tissue labeling PBK/SPK with ab236871 at 1/2000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) Ready to use. Positive staining in human gastric cancer (PMID : 26894977; PMID : 27898655) is observed. Counterstained with hematoxylin.

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) Ready to use.

Heat mediated antigen retrieval using ab93684 (Tris/EDTA buffer, pH 9.0).

Flow Cytometry (Intracellular) - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • Flow Cyt (Intra)

Supplier Data

Flow Cytometry (Intracellular) - Anti-PBK/SPK antibody [EPR21982] (AB236871)

Intracellular flow cytometric analysis of 4% paraformaldehyde-fixed, 90% methanol-permeabilized HeLa (human epithelial cell line from cervix adenocarcinoma) cell line labeling PBK/SPK with ab236871 at 1/50 dilution (red) compared with a Rabbit IgG, monoclonal [EPR25A] - Isotype Control (ab172730) (black) and an unlabeled control (cells without incubation with primary antibody and secondary antibody) (blue). Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (ab150077) at 1/2000 dilution was used as the secondary antibody.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PBK/SPK antibody [EPR21982] (AB236871)

Immunohistochemical analysis of paraffin-embedded human testis tissue labeling PBK/SPK with ab236871 at 1/2000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) Ready to use. Positive staining in germ cells of human testis (PMID : 16982762; PMID : 25909225) is observed. Counterstained with hematoxylin.

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) Ready to use.

Heat mediated antigen retrieval using ab93684 (Tris/EDTA buffer, pH 9.0).

Immunoprecipitation - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • IP

Supplier Data

Immunoprecipitation - Anti-PBK/SPK antibody [EPR21982] (AB236871)

PBK/SPK was immunoprecipitated from 0.35 mg of HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate with ab236871 at 1/30 dilution. Western blot was performed from the immunoprecipitate using ab184276 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366), was used for detection at 1/5000 dilution.

Lane 1 : HeLa whole cell lysate 10 μg (Input).

Lane 2 : ab231871 IP in HeLa whole cell lysate.

Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab231871 in HeLa whole cell lysate.

Blocking and dilution buffer and concentration : 5% NFDM/TBST.

Exposure time : 30 seconds.

All lanes:

Immunoprecipitation - Anti-PBK/SPK antibody [EPR21982] (ab236871)

Predicted band size: 36 kDa,50 kDa

Observed band size: 36 kDa,46 kDa,50 kDa

false

Western blot - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • WB

Lab

Western blot - Anti-PBK/SPK antibody [EPR21982] (AB236871)

Lanes 1- 2 : Merged signal (red and green). Green - ab236871 observed at 40 kDa. Red - Anti-alpha Tubulin antibody [DM1A] - Loading Control (ab7291) observed at 50 kDa.

ab236871 was shown to react with PBK/SPK in wild-type HEK-293T cells in western blot. Loss of signal was observed when knockout cell line ab266827 (knockout cell lysate ab257575) was used. Wild-type HEK-293T and PBK knockout HEK-293T cell lysates were subjected to SDS-PAGE. ab236871 and Anti-alpha Tubulin antibody [DM1A] - Loading Control (ab7291) overnight at 4°C at a 1 in 1000 dilution and a 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye®800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye®680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.

All lanes:

Western blot - Anti-PBK/SPK antibody [EPR21982] (ab236871) at 1/1000 dilution

Lane 1:

Wild-type HEK-293T cell lysate at 20 µg

Lane 2:

PBK knockout HEK-293T cell lysate at 20 µg

Lane 2:

Western blot - Human PBK (SPK) knockout HEK-293T cell line (<a href='/en-us/products/cell-lines/human-pbk-spk-knockout-hek-293t-cell-line-ab266827'>ab266827</a>)

Predicted band size: 36 kDa

Observed band size: 40 kDa

false

Western blot - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • WB

Supplier Data

Western blot - Anti-PBK/SPK antibody [EPR21982] (AB236871)

Blocking/Dilution buffer : 5% NFDM/TBST.

The molecular weight observed is consistent with what has been described in the literature (PMID : 23547718; PMID : 25909225).

ab236871 was shown to specifically react with PBK/SPK in wild-type HAP1 cells as signal was lost in PBK/SPK knockout cells. Wild-type and PBK/SPK knockout samples were subjected to SDS-PAGE. ab236871 and ab181602 (Rabbit anti-GAPDH loading control) were incubated 1 hour at room temperature at 1/1000 dilution and 1/200,000 dilution respectively. Blots were developed with Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated (ab97051) secondary antibody at 1/100,000 dilution for 1 hour at room temperature before imaging.

All lanes:

Western blot - Anti-PBK/SPK antibody [EPR21982] (ab236871) at 1/1000 dilution

Lane 1:

Wild-type HAP1 cell lysate at 20 µg

Lane 2:

PBK/SPK knockout HAP1 cell lysate at 20 µg

Lane 3:

HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 20 µg

Lane 4:

HepG2 (human liver hepatocellular carcinoma cell line) whole cell lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 36 kDa

Observed band size: 38 kDa

false

Exposure time: 15s

Western blot - Anti-PBK/SPK antibody [EPR21982] (AB236871)
  • WB

Supplier Data

Western blot - Anti-PBK/SPK antibody [EPR21982] (AB236871)

Exposure time : Lanes 1-3 : 26 seconds; Lane 4 : 8 seconds; Lanes 5-6 : 70 seconds.

Blocking/Dilution buffer : 5% NFDM/TBST.

The molecular weight observed is consistent with what has been described in the literature (PMID : 23547718; PMID : 25909225).

All lanes:

Western blot - Anti-PBK/SPK antibody [EPR21982] (ab236871) at 1/1000 dilution

Lane 1:

SW480 (human colorectal adenocarcinoma cell line) whole cell lysate at 20 µg

Lane 2:

A431 (human epidermoid carcinoma cell line) whole cell lysate at 20 µg

Lane 3:

U-87 MG (human glioblastoma-astrocytoma epithelial cell line) whole cell lysate at 20 µg

Lane 4:

Rat testis lysate at 20 µg

Lane 5:

C6 (rat glial tumor cell line) whole cell lysate at 10 µg

Lane 6:

PC-12 (rat adrenal gland pheochromocytoma cell line) whole cell lysate at 10 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 36 kDa

Observed band size: 38 kDa

false

  • Carrier free

    Anti-PBK/SPK antibody [EPR21982] - BSA and Azide free

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR21982

Isotype

IgG

Carrier free

No

Reacts with

Rat, Human

Applications

IHC-P, WB, IP, Flow Cyt (Intra)

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Specificity

IHC is recommended for human only.

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "FlowCytIntra" : {"fullname" : "Flow Cytometry (Intracellular)", "shortname":"Flow Cyt (Intra)"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "1/30", "IP-species-notes": "<p></p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>", "FlowCytIntra-species-checked": "testedAndGuaranteed", "FlowCytIntra-species-dilution-info": "1/50", "FlowCytIntra-species-notes": "<p></p>", "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/2000", "IHCP-species-notes": "<p>IHC is recommended for human only.</p> Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol." }, "Rat": { "IP-species-checked": "guaranteed", "IP-species-dilution-info": "", "IP-species-notes": "", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>", "FlowCytIntra-species-checked": "guaranteed", "FlowCytIntra-species-dilution-info": "", "FlowCytIntra-species-notes": "", "IHCP-species-checked": "guaranteed", "IHCP-species-dilution-info": "", "IHCP-species-notes": "" } } }

Product details

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Preservative: 0.01% Sodium azide Constituents: PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA
Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

PBK/SPK also known as PDZ-binding kinase or Cdc2-related kinase is a serine/threonine protein kinase with an approximate molecular weight of 47 kDa. This protein is involved in cell division playing an important role in mitotic processes. PBK/SPK is expressed in various tissues including significant levels in testis and placenta often in proliferating cell types. It also exhibits higher expression in cancerous tissues suggesting a role in tumorigenesis.
Biological function summary

PBK/SPK facilitates cell cycle progression and cellular proliferation. This protein is not typically part of larger complexes but it partners with other molecules during cell division to ensure proper mitotic spindle formation and chromosome segregation. Its expression levels increase during the G2/M phase of the cell cycle indicating its involvement in cell cycle regulation. In cancer it often shows overexpression contributing to unregulated proliferation of cancer cells.

Pathways

PBK/SPK is associated with critical cell division pathways such as the MAPK signaling pathway. This involvement impacts cellular responses to growth signals and stress. PBK can phosphorylate and interact with proteins like p38 MAPK which further modulates signal transduction related to cellular growth and survival. Through these pathways PBK/SPK helps manage the balance between cell division and apoptosis particularly under stress conditions.

PBK/SPK has strong correlations with cancer especially glioblastoma and cervical cancer. Overexpression of PBK often links to poor prognosis in these conditions. In cancerous settings PBK interacts with proteins such as p53 and c-Myc influencing tumor progression and resistance to therapy. PBK can modulate oncogenic pathways providing a potential target for therapeutic intervention in tumor proliferation and survival.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Phosphorylates MAP kinase p38. Seems to be active only in mitosis. May also play a role in the activation of lymphoid cells. When phosphorylated, forms a complex with TP53, leading to TP53 destabilization and attenuation of G2/M checkpoint during doxorubicin-induced DNA damage.
See full target information PBK

Publications (1)

Recent publications for all applications. Explore the full list and refine your search

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 12:e2412526 PubMed39783786

2025

Single-Cell Multi-omics Assessment of Spinal Cord Injury Blocking via Cerium-doped Upconversion Antioxidant Nanoenzymes.

Applications

Unspecified application

Species

Unspecified reactive species

Ke Wang,Judun Zheng,Ronghai Li,Tianjun Chen,Yanming Ma,Ping Wu,Jianxian Luo,Jingyi Zhu,Weiqiang Lin,Minghai Zhao,Yue Yuan,Wen Ma,Xiumei Lin,Yang Wang,Longqi Liu,Peng Gao,Hongsheng Lin,Chuanyu Liu,Yuhui Liao,Zhisheng Ji
View all publications

Product promise

We are committed to supporting your work with high-quality reagents, and we're here for you every step of the way. In the unlikely event that one of our products does not perform as expected, you're protected by our Product Promise.
For full details, please see our Terms & Conditions

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

For licensing inquiries, please contact partnerships@abcam.com