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AB2811

Anti-KPNB1 antibody [3E9]

5

(19 Reviews)

|

(71 Publications)

Anti-KPNB1 antibody [3E9] (ab2811) is a mouse monoclonal antibody detecting KPNB1 in Western Blot, Flow Cytometry, IP, ICC/IF. Suitable for Human, Mouse, Rat.

- Over 60 publications
- Trusted since 2003

View Alternative Names

NTF97, KPNB1, Importin subunit beta-1, Importin-90, Karyopherin subunit beta-1, Nuclear factor p97, Pore targeting complex 97 kDa subunit, PTAC97

12 Images
Western blot - Anti-KPNB1 antibody [3E9] (AB2811)
  • WB

Supplier Data

Western blot - Anti-KPNB1 antibody [3E9] (AB2811)

All lanes:

Western blot - Anti-KPNB1 antibody [3E9] (ab2811) at 1/5000 dilution

Lane 1:

HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 30 µg

Lane 2:

Caco-2 (human colorectal adenocarcinoma cell line) whole cell lysate at 30 µg

Lane 3:

HepG2 (human liver hepatocellular carcinoma cell line) whole cell lysate at 30 µg

Lane 4:

NIH/3T3 (mouse embryo fibroblast cell line) whole cell lysate at 30 µg

Secondary

All lanes:

Goat anti-Mouse IgG H+L (HRP) at 1/4000 dilution

Predicted band size: 97 kDa

Observed band size: 97 kDa

true

Immunocytochemistry/ Immunofluorescence - Anti-KPNB1 antibody [3E9] (AB2811)
  • ICC/IF

Supplier Data

Immunocytochemistry/ Immunofluorescence - Anti-KPNB1 antibody [3E9] (AB2811)

Immunofluorecent analysis of HMVEC (Human Lung Microvascular Endothelial cells) cells stained for KPNB1 using ab2811.

Flow Cytometry - Anti-KPNB1 antibody [3E9] (AB2811)
  • Flow Cyt

Unknown

Flow Cytometry - Anti-KPNB1 antibody [3E9] (AB2811)

Overlay histogram showing Jurkat cells stained with ab2811 (red line). The cells were fixed with 4% paraformaldehyde (10 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab2811, 1/100 dilution) for 30 min at 22°C. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22°C. Isotype control antibody (black line) was mouse IgG2a [ICIGG2A] (ab91361, 2μg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed. This antibody gave a positive signal in Jurkat cells fixed with methanol (5 min)/permeabilized in 0.1% PBS-Tween used under the same conditions.

Flow Cytometry - Anti-KPNB1 antibody [3E9] (AB2811)
  • Flow Cyt

Supplier Data

Flow Cytometry - Anti-KPNB1 antibody [3E9] (AB2811)

Flow cytometry analysis of KPNB1 in Jurkat (Human T cell leukemia cell line from peripheral blood) cells (green) compared to an isotype control (blue). Cells were harvested, adjusted to a concentration of 1-5x10^6 cells/ml, fixed with 2% paraformaldehyde and washed with PBS. Cells were blocked with a 2% solution of BSA-PBS for 30 min at room temperature and incubated with ab2811 (1ug/test) for 40 min at room temperature. Cells were then incubated for 40 min at room temperature in the dark using a Dylight 488-conjugated secondary antibody and re-suspended in PBS for FACS analysis.

Immunoprecipitation - Anti-KPNB1 antibody [3E9] (AB2811)
  • IP

Collaborator

Immunoprecipitation - Anti-KPNB1 antibody [3E9] (AB2811)

Immunoprecipitation of Importin beta, in HeLa (Human epithelial cell line from cervix adenocarcinoma) cells, using ab2811. Coomassie-stained 8% SDS-page gel was loaded with IP fractions obtained by incubating 2 mg of pre-cleared HeLa whole cell extracts with 4μg ab2811 or 4μg IgG (control). The Importin band (see arrow) was cut out of the gel and its identity confirmed by Mass Spectometry. Please refer to protocol tab for further experimental details.

All lanes:

Immunoprecipitation - Anti-KPNB1 antibody [3E9] (ab2811)

Predicted band size: 97 kDa

false

Image and protocol courtesy of Rosamaria Mangiacasale and Patrizia Lavia, University 'La Sapienza' CNR, Italy

Immunocytochemistry/ Immunofluorescence - Anti-KPNB1 antibody [3E9] (AB2811)
  • ICC/IF

Collaborator

Immunocytochemistry/ Immunofluorescence - Anti-KPNB1 antibody [3E9] (AB2811)

NIH/3T3 (Mouse embryo fibroblast cell line) cells were incubated for 4 minutes in PHEM/1%triton, washed for 2 minutes in 1x PHEM and fixed for 10 minutes at room temperature in 3.7% PFA containing 30mM sucrose. Following washing in PBS, the cells were incubated for 2 minutes in 100% Methanol at -20°C, then washed 3 times in PBS. The cells were then incubated with ab2811 (1/200) for 1 hour at room temperature. The image panel shows the nuclei stained with DAPI (blue) and the nuclear envalope and cytoplasm stained with ab2811 (green). 100x magnification.

This image is courtesy of Roberto Giambruno, Marilena Ciciarello and Patrizia Lavia

Flow Cytometry - Anti-KPNB1 antibody [3E9] (AB2811)
  • Flow Cyt

Supplier Data

Flow Cytometry - Anti-KPNB1 antibody [3E9] (AB2811)

Flow cytometry analysis of KPNB1 in 3T3 cells (green) compared to an isotype control (blue). Cells were harvested, adjusted to a concentration of 1-5x10^6 cells/ml, fixed with 2% paraformaldehyde and washed with PBS. Cells were blocked with a 2% solution of BSA-PBS for 30 min at room temperature and incubated with ab2811 (1ug/test) for 40 min at room temperature. Cells were then incubated for 40 min at room temperature in the dark using a Dylight 488-conjugated secondary antibody and re-suspended in PBS for FACS analysis.

Flow Cytometry - Anti-KPNB1 antibody [3E9] (AB2811)
  • Flow Cyt

Supplier Data

Flow Cytometry - Anti-KPNB1 antibody [3E9] (AB2811)

Flow cytometry analysis of KPNB1 in PC-12 (Rat adrenal gland pheochromocytoma cell line) cells (green) compared to an isotype control (blue). Cells were harvested, adjusted to a concentration of 1-5x10^6 cells/ml, fixed with 2% paraformaldehyde and washed with PBS. Cells were blocked with a 2% solution of BSA-PBS for 30 min at room temperature and incubated with ab2811 (1ug/test) for 40 min at room temperature. Cells were then incubated for 40 min at room temperature in the dark using a Dylight 488-conjugated secondary antibody and re-suspended in PBS for FACS analysis.

Western blot - Anti-KPNB1 antibody [3E9] (AB2811)
  • WB

Unknown

Western blot - Anti-KPNB1 antibody [3E9] (AB2811)

HeLa whole cell extract was run on a 10%SDS-PAGE and transferred to PVDF membrane. Membrane was blocked for 30 mins in TBS/0.1% Tween/ 5% Milk; ab2811 (1/5000) was incubated for 1 hr in TBS/0.1%Tween/5% Milk and followed by 3 washes in TBS/ 0.1%Tween (3x 7 mins). Secondary antibody was incubated for 30 mins in a TBS/ 0.1% Tween solution.This was followed by 3 washes with the TBST solution (3x7 mins) and one wash in TBS. Western blot developed using ECL plus (Amersham).

All lanes:

Western blot - Anti-KPNB1 antibody [3E9] (ab2811) at 1/5000 dilution

All lanes:

HeLa Whole cell extract

Secondary

All lanes:

HRP-conjugated anti mouse IgG at 1/5000 dilution

Predicted band size: 97 kDa

false

Image and protocol courtesy of Rosamaria Mangiacasale and Patrizia Lavia, University 'La Sapienza' CNR, Italy

Western blot - Anti-KPNB1 antibody [3E9] (AB2811)
  • WB

AbReview38870****

Western blot - Anti-KPNB1 antibody [3E9] (AB2811)

All lanes:

Western blot - Anti-KPNB1 antibody [3E9] (ab2811) at 1/2000 dilution

Lane 1:

Mouse lung whole tissue lysate

Lane 2:

Mouse kidney whole tissue lysate

Lane 3:

Mouse spleen whole tissue lysate

Secondary

All lanes:

HRP-conjugated Goat anti-mouse IgG polyclonal at 1/5000 dilution

Predicted band size: 97 kDa

Observed band size: 97 kDa

true

Exposure time: 3min

This image is courtesy of an anonymous Abreview

Immunocytochemistry/ Immunofluorescence - Anti-KPNB1 antibody [3E9] (AB2811)
  • ICC/IF

Supplier Data

Immunocytochemistry/ Immunofluorescence - Anti-KPNB1 antibody [3E9] (AB2811)

Immunolocalization of KPNB1 in PTK (Long-nosed potoroo epithelial kidney cell line) cells using ab2811.

Western blot - Anti-KPNB1 antibody [3E9] (AB2811)
  • WB

Supplier Data

Western blot - Anti-KPNB1 antibody [3E9] (AB2811)

All lanes:

Western blot - Anti-KPNB1 antibody [3E9] (ab2811) at 1/50 dilution

Lane 1:

U-251 MG (Human brain glioma cell line) whole cell lysate at 25 µg

Lane 2:

HepG2 (Human liver hepatocellular carcinoma cell line) whole cell lysate at 25 µg

Lane 3:

C6 (Rat glial tumor cell line) whole cell lysate at 25 µg

Secondary

All lanes:

HRP-conjugated secondary antibody

Predicted band size: 97 kDa

Observed band size: 100 kDa

false

Key facts

Host species

Mouse

Clonality

Monoclonal

Clone number

3E9

Isotype

IgG2a

Carrier free

No

Reacts with

Mouse, Rat, Human

Applications

WB, ICC/IF, IP, Flow Cyt

applications

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"}, "FlowCyt" : {"fullname" : "Flow Cytometry", "shortname":"Flow Cyt"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "FlowCyt-species-checked": "testedAndGuaranteed", "FlowCyt-species-dilution-info": "1/100", "FlowCyt-species-notes": "<p><a href='/en-us/products/primary-antibodies/mouse-igg2c-kappa-monoclonal-18c8bc7ad10-isotype-control-ab170191'>ab170191</a> - Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody.</p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/5000", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "testedAndGuaranteed", "ICCIF-species-dilution-info": "1/1000", "ICCIF-species-notes": "<p></p>" }, "Mouse": { "IP-species-checked": "guaranteed", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "FlowCyt-species-checked": "testedAndGuaranteed", "FlowCyt-species-dilution-info": "1/100", "FlowCyt-species-notes": "<p><a href='/en-us/products/primary-antibodies/mouse-igg2c-kappa-monoclonal-18c8bc7ad10-isotype-control-ab170191'>ab170191</a> - Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody.</p>", "WB-species-checked": "guaranteed", "WB-species-dilution-info": "", "WB-species-notes": "", "ICCIF-species-checked": "testedAndGuaranteed", "ICCIF-species-dilution-info": "1/1000", "ICCIF-species-notes": "<p></p>" }, "Rat": { "IP-species-checked": "guaranteed", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "FlowCyt-species-checked": "testedAndGuaranteed", "FlowCyt-species-dilution-info": "1/100", "FlowCyt-species-notes": "<p><a href='/en-us/products/primary-antibodies/mouse-igg2c-kappa-monoclonal-18c8bc7ad10-isotype-control-ab170191'>ab170191</a> - Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody.</p>", "WB-species-checked": "guaranteed", "WB-species-dilution-info": "", "WB-species-notes": "", "ICCIF-species-checked": "guaranteed", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "" } } }

Product details

What is this antibody validated in?
Anti-KPNB1 antibody [3E9] (ab2811) is a mouse monoclonal antibody and is validated for use in Western Blot (WB), Flow Cytometry (Flow Cyt), Immunoprecipitation (IP), Immunocytochemistry/immunofluorescence (ICC/IF) in Human, Mouse, Rat samples.

What is the molecular weight of KPNB1?
Anti-KPNB1 [3E9] (ab2811) specifically detects a band for KPNB1 (UniProt: Q14974) at a molecular weight of 97kDa.

Trusted by the scientific community
Anti-KPNB1 [3E9] (ab2811) was first used in a scientific publication in 2003 and has been cited over 60 times in peer-reviewed journals.

Reviewed by scientists
Anti-KPNB1 [3E9] (ab2811) has over 15 independent reviews from customers.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
Preservative: 0.05% Sodium azide Constituents: PBS
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.

KPNB1 also known as importin beta plays hard role in nucleocytoplasmic transport. This large protein with a mass approximately 97 kDa shuttles proteins and ribonucleoproteins into the nucleus. KPNB1 expression occurs widely in many tissues reflecting its essential function in cell operations. As a solenoid protein KPNB1 structure allows flexibility needed for diverse interactions with cargo proteins and nuclear pore complexes.
Biological function summary

Importin beta facilitates the import of nuclear localization signal (NLS)-bearing proteins into the nucleus. KPNB1 forms a complex with importin alpha to mediate import processes. Importin alpha binds to the NLS-containing cargo while KPNB1 interacts with the nuclear pore complex. This system oversees important regulation of several cellular processes including signal transduction and cell cycle progression. The protein's role helps to organize cellular response to various stimuli maintaining cellular homeostasis.

Pathways

KPNB1 contributes to regulation in the nuclear import and export pathways. It tightly associates with Ran-GTPase a protein involved in the Ran pathway. This interaction supports directionality and specificity of energy-dependent nuclear transport. Additionally KPNB1 associates with proteins like NUP50 and NUP98 functioning as a gatekeeper at the nuclear pore complex by controlling cargo passage. Through these pathways KPNB1 balances cellular imports and exports critical for cell health and functionality.

KPNB1 has links to cancer notably in tumorigenesis and cancer progression. Studies show aberrant KPNB1 expression affects the nuclear import machinery supporting cancer cell proliferation and survival. KPNB1 interacts with oncogenic proteins such as c-Myc influencing transcription regulation in tumor cells. Furthermore KPNB1 holds relevance in neurodegenerative diseases like Alzheimer's where impaired transport function contributes to pathological accumulation of proteins in neuronal cells.

Product protocols

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

Target data

Functions in nuclear protein import, either in association with an adapter protein, like an importin-alpha subunit, which binds to nuclear localization signals (NLS) in cargo substrates, or by acting as autonomous nuclear transport receptor (PubMed : 10228156, PubMed : 11682607, PubMed : 11891849, PubMed : 19386897, PubMed : 20818336, PubMed : 24699649, PubMed : 7615630, PubMed : 9687515). Acting autonomously, serves itself as NLS receptor (PubMed : 10228156, PubMed : 11682607, PubMed : 11891849, PubMed : 19386897, PubMed : 20818336, PubMed : 24699649, PubMed : 7615630, PubMed : 9687515). Docking of the importin/substrate complex to the nuclear pore complex (NPC) is mediated by KPNB1 through binding to nucleoporin FxFG repeats and the complex is subsequently translocated through the pore by an energy requiring, Ran-dependent mechanism (PubMed : 10228156, PubMed : 11682607, PubMed : 11891849, PubMed : 19386897, PubMed : 20818336, PubMed : 24699649, PubMed : 7615630, PubMed : 9687515). At the nucleoplasmic side of the NPC, Ran binds to importin-beta and the three components separate and importin-alpha and -beta are re-exported from the nucleus to the cytoplasm where GTP hydrolysis releases Ran from importin (PubMed : 10228156, PubMed : 11682607, PubMed : 11891849, PubMed : 19386897, PubMed : 20818336, PubMed : 24699649, PubMed : 7615630, PubMed : 9687515). The directionality of nuclear import is thought to be conferred by an asymmetric distribution of the GTP- and GDP-bound forms of Ran between the cytoplasm and nucleus (PubMed : 10228156, PubMed : 11682607, PubMed : 11891849, PubMed : 19386897, PubMed : 24699649, PubMed : 7615630, PubMed : 9687515). Mediates autonomously the nuclear import of ribosomal proteins RPL23A, RPS7 and RPL5 (PubMed : 11682607, PubMed : 9687515). In association with IPO7, mediates the nuclear import of H1 histone (PubMed : 10228156). In vitro, mediates nuclear import of H2A, H2B, H3 and H4 histones (By similarity). Imports MRTFA, SNAI1 and PRKCI into the nucleus (PubMed : 11891849, PubMed : 19386897, PubMed : 20818336, PubMed : 24699649).. (Microbial infection) In case of HIV-1 infection, binds and mediates the nuclear import of HIV-1 Rev.
See full target information KPNB1

Publications (71)

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

Signal transduction and targeted therapy 10:212 PubMed40624014

2025

Transferrin receptor 1 nuclear translocation facilitates tumor progression via p53-mediated chromatin interactions and genome-wide alterations.

Applications

Unspecified application

Species

Unspecified reactive species

Yaxin Hou,Guoheng Tang,Qizhi Wang,Meng Zhou,Ran Xu,Xuehui Chen,Guizhi Shi,Zhuoran Wang,Xiyun Yan,Jie Zhuang,Kelong Fan

Cellular & molecular biology letters 29:145 PubMed39604846

2024

KPNB1-ATF4 induces BNIP3-dependent mitophagy to drive odontoblastic differentiation in dental pulp stem cells.

Applications

Unspecified application

Species

Unspecified reactive species

Zeying Zhang,Di Yang,Xiaoyuan Yan,Qiujing Qiu,Jiajie Guo,Lihong Qiu

Communications biology 7:1560 PubMed39580542

2024

Ibetazol, a novel inhibitor of importin β1-mediated nuclear import.

Applications

Unspecified application

Species

Unspecified reactive species

Thomas Vercruysse,Els Vanstreels,Maarten Jacquemyn,Sandro Boland,Amuri Kilonda,Sara Allasia,Ilse Vandecaetsbeek,Hugo Klaassen,Matthias Versele,Patrick Chaltin,Arnaud Marchand,Dirk Daelemans

The Journal of cell biology 223: PubMed38652117

2024

UBAP2L ensures homeostasis of nuclear pore complexes at the intact nuclear envelope.

Applications

Unspecified application

Species

Unspecified reactive species

Yongrong Liao,Leonid Andronov,Xiaotian Liu,Junyan Lin,Lucile Guerber,Linjie Lu,Arantxa Agote-Arán,Evanthia Pangou,Li Ran,Charlotte Kleiss,Mengdi Qu,Stephane Schmucker,Luca Cirillo,Zhirong Zhang,Daniel Riveline,Monica Gotta,Bruno P Klaholz,Izabela Sumara

Nature aging 4:546-567 PubMed38553564

2024

Restoration of neuronal progenitors by partial reprogramming in the aged neurogenic niche.

Applications

Unspecified application

Species

Unspecified reactive species

Lucy Xu,Julliana Ramirez-Matias,Max Hauptschein,Eric D Sun,Judith C Lunger,Matthew T Buckley,Anne Brunet

Molecular biology of the cell 35:ar62 PubMed38507240

2024

SARS-CoV-2 Orf6 is positioned in the nuclear pore complex by Rae1 to inhibit nucleocytoplasmic transport.

Applications

Unspecified application

Species

Unspecified reactive species

Tadashi Makio,Ke Zhang,Nicole Love,Fred D Mast,Xue Liu,Mohamed Elaish,Tom Hobman,John D Aitchison,Beatriz M A Fontoura,Richard W Wozniak

Science advances 9:eadi5548 PubMed37585529

2023

Loss of function of the ALS-associated NEK1 kinase disrupts microtubule homeostasis and nuclear import.

Applications

Unspecified application

Species

Unspecified reactive species

Jacob R Mann,Elizabeth D McKenna,Darilang Mawrie,Vasileios Papakis,Francesco Alessandrini,Eric N Anderson,Ryan Mayers,Hannah E Ball,Evan Kaspi,Katherine Lubinski,Desiree M Baron,Liana Tellez,John E Landers,Udai B Pandey,Evangelos Kiskinis

Frontiers in cell and developmental biology 11:981425 PubMed37484914

2023

HURP localization in metaphase is the result of a multi-step process requiring its phosphorylation at Ser627 residue.

Applications

Unspecified application

Species

Unspecified reactive species

Stylianos Didaskalou,Christos Efstathiou,Sotirios Galtsidis,Ilοna Kesisova,Aliaksandr Halavatyi,Tountzai Elmali,Avgi Tsolou,Andreas Girod,Maria Koffa

Clinical and translational medicine 13:e1235 PubMed37186134

2023

Therapeutic targeting of CNBP phase separation inhibits ribosome biogenesis and neuroblastoma progression via modulating SWI/SNF complex activity.

Applications

Unspecified application

Species

Unspecified reactive species

Anpei Hu,Guo Chen,Banghe Bao,Yanhua Guo,Dan Li,Xiaojing Wang,Jianqun Wang,Qilan Li,Yi Zhou,Haiyang Gao,Jiyu Song,Xinyi Du,Liduan Zheng,Qiangsong Tong

Nature 617:162-169 PubMed37100914

2023

Visualizing the disordered nuclear transport machinery in situ.

Applications

Unspecified application

Species

Unspecified reactive species

Miao Yu,Maziar Heidari,Sofya Mikhaleva,Piau Siong Tan,Sara Mingu,Hao Ruan,Christopher D Reinkemeier,Agnieszka Obarska-Kosinska,Marc Siggel,Martin Beck,Gerhard Hummer,Edward A Lemke
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