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AB247421

Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free

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(1 Publication)

Rabbit Recombinant Monoclonal PBK/SPK antibody. Carrier free. Suitable for IHC-P, IP, WB and reacts with Human 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

4 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (AB247421)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (AB247421)

Immunohistochemical analysis of paraffin-embedded human tonsil using ab75987 at 1/100 dilution. Antigen retrieval was heat mediated with citrate buffer pH 6 before commencing with IHC staining protocol.

This data was developed using the same antibody clone in a different buffer formulation (ab75987).

Western blot - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (AB247421)
  • WB

Supplier Data

Western blot - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (AB247421)

This data was developed using the same antibody clone in a different buffer formulation (ab75987).

All lanes:

Western blot - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (ab247421) at 1/500000 dilution

All lanes:

HeLa cell lysate at 10 µg

Secondary

All lanes:

HRP labelled goat anti-rabbit at 1/2000 dilution

Predicted band size: 36 kDa

Observed band size: 40 kDa

false

Western blot - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (AB247421)
  • WB

Lab

Western blot - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (AB247421)

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab75987).

Lanes 1- 2 : Merged signal (red and green). Green - ab75987 observed at 40 kDa. Red - Anti-alpha Tubulin antibody [DM1A] - Loading Control (ab7291) observed at 50 kDa.

ab75987 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. ab75987 and Anti-alpha Tubulin antibody [DM1A] - Loading Control (ab7291) overnight at 4°C at a 1 in 100000 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 [EP2520Y] (<a href='/en-us/products/primary-antibodies/pbk-spk-antibody-ep2520y-ab75987'>ab75987</a>) at 1/100000 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: 27 kDa,36 kDa

Observed band size: 40 kDa

false

Western blot - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (AB247421)
  • WB

Lab

Western blot - Anti-PBK/SPK antibody [EP2520Y] - BSA and Azide free (AB247421)

Lane 1 : Wild-type HAP1 cell lysate (20 μg)
Lane 2 : PBK knockout HAP1 cell lysate (20 μg)
Lane 3 : HeLa cell lysate (20 μg)
Lane 4 : Human tonsil tissue lysate (20 μg)
Lanes 1 - 4 : Merged signal (red and green). Green - ab75987 observed at 40 kDa. Red - loading control, ab7291, observed at 52 kDa.

ab75987 was shown to recognize PBK when PBK knockout samples were used, along with additional cross-reactive bands. Wild-type and PBK knockout samples were subjected to SDS-PAGE. ab75987 diluted to 1/100,000 and ab7291 (loading control to alpha Tubulin) diluted to 1/10,000 and incubated overnight at 4°C. 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 1/10,000 dilution for 1 hour at room temperature before imaging.

This data was developed using the same antibody clone in a different buffer formulation (ab75987).

All lanes:

Western blot - Anti-PBK/SPK antibody [EP2520Y] (<a href='/en-us/products/primary-antibodies/pbk-spk-antibody-ep2520y-ab75987'>ab75987</a>)

Predicted band size: 36 kDa

false

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EP2520Y

Isotype

IgG

Carrier free

Yes

Reacts with

Human

Applications

IHC-P, IP, WB

applications

Immunogen

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

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "", "IHCP-species-notes": "<p>Antigen retrieval is recommended.</p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "IP-species-checked": "guaranteed", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "", "WB-species-notes": "<p></p>" } } }

Product details

ab247421 is the carrier-free version of ab75987.

Species reactivity
Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species.
Please contact us for more information.

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.

Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.

Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

Compatibility
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Constituents: PBS
Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
Do Not Freeze

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

Nature genetics 57:1142-1154 PubMed40229600

2025

Longitudinal single-cell multiomic atlas of high-risk neuroblastoma reveals chemotherapy-induced tumor microenvironment rewiring.

Applications

Unspecified application

Species

Unspecified reactive species

Wenbao Yu,Rumeysa Biyik-Sit,Yasin Uzun,Chia-Hui Chen,Anusha Thadi,Jonathan H Sussman,Minxing Pang,Chi-Yun Wu,Liron D Grossmann,Peng Gao,David W Wu,Aliza Yousey,Mei Zhang,Christina S Turn,Zhan Zhang,Shovik Bandyopadhyay,Jeffrey Huang,Tasleema Patel,Changya Chen,Daniel Martinez,Lea F Surrey,Michael D Hogarty,Kathrin Bernt,Nancy R Zhang,John M Maris,Kai Tan
View all publications

Product promise

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