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Home >> Antibodies >> NUSAP1 Antibody / Nucleolar and spindle-associated protein 1

NUSAP1 Antibody / Nucleolar and spindle-associated protein 1 (FY13073)

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Image FY13073 Adding 0.2 ml of distilled water will yield a concentration of 500 ug/ml 100 ug 449
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Immunofluorescent staining of NUSAP1 using anti-NUSAP1 antibody (green) and anti-Beta Tubulin antibody (red). NUSAP1 was detected in an immunocytochemical section of U2OS cells. Enzyme antigen retrieval was performed using IHC enzyme antigen retrieval reagent for 15 mins. The cells were blocked with 10% goat serum. And then incubated with 5 ug/ml rabbit anti-NUSAP1 antibody and mouse anti-Beta Tubulin antibody overnight at 4oC. DyLight 488 Conjugated Goat Anti-Rabbit IgG and Cy3 Conjugated Goat Anti-Mouse IgG were used as secondary antibody at 1:500 dilution and incubated for 30 minutes at 37oC. Visualize using a fluorescence microscope and filter sets appropriate for the label used.
Western blot analysis of NUSAP1 using anti-NUSAP1 antibody. Electrophoresis was performed on a 10% SDS-PAGE gel at 80V (Stacking gel) / 120V (Resolving gel) for 2 hours. Lane 1: human 293T whole cell lysates, Lane 2: human Hela whole cell lysates, Lane 3: human Jurkat whole cell lysates, Lane 4: human U251 whole cell lysates. After electrophoresis, proteins were transferred to a nitrocellulose membrane at 150 mA for 50-90 minutes. Blocked the membrane with 5% non-fat milk/TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-NUSAP1 antibody at 1:1000 overnight at 4oC, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:5000 for 1.5 hour at RT. The signal was developed using an ECL Plus Western Blotting Substrate. A single dominant band is detected at ~55-60 kDa, above the predicted ~49 kDa. The higher apparent size is well documented for NUSAP1 and reflects extensive mitotic phosphorylation and the protein’s coiled-coil/basic composition, which together cause slower electrophoretic mobility. Where present, subtle band broadening or minor adjacent bands likely represent differential phosphorylation states of NUSAP1.
Immunohistochemical staining of NUSAP1 using anti-NUSAP1 antibody. NUSAP1 was detected in a paraffin-embedded section of human stomach cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1:100 rabbit anti-NUSAP1 antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Immunohistochemical staining of NUSAP1 using anti-NUSAP1 antibody. NUSAP1 was detected in a paraffin-embedded section of mouse testis tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1:100 rabbit anti-NUSAP1 antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Immunohistochemical staining of NUSAP1 using anti-NUSAP1 antibody. NUSAP1 was detected in a paraffin-embedded section of mouse epididymis tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1:100 rabbit anti-NUSAP1 antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Immunohistochemical staining of NUSAP1 using anti-NUSAP1 antibody. NUSAP1 was detected in a paraffin-embedded section of rat testis tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1:100 rabbit anti-NUSAP1 antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Western blot analysis of NUSAP1 using anti-NUSAP1 antibody. Electrophoresis was performed on a 10% SDS-PAGE gel at 80V (Stacking gel) / 120V (Resolving gel) for 2 hours. Lane 1: human U251 whole cell lysates, Lane 2: human Hela whole cell lysates, Lane 3: human whole cell lysates, Lane 4: human HepG2 whole cell lysates. After electrophoresis, proteins were transferred to a nitrocellulose membrane at 150 mA for 50-90 minutes. Blocked the membrane with 5% non-fat milk/TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-NUSAP1 antibody at 0.5 ug/ml overnight at 4oC, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:5000 for 1.5 hour at RT. The signal was developed using an ECL Plus Western Blotting Substrate. A single dominant band is detected at ~55-60 kDa, above the predicted ~49 kDa. The higher apparent size is well documented for NUSAP1 and reflects extensive mitotic phosphorylation and the protein’s coiled-coil/basic composition, which together cause slower electrophoretic mobility. Where present, subtle band broadening or minor adjacent bands likely represent differential phosphorylation states of NUSAP1.
Immunohistochemical staining of NUSAP1 using anti-NUSAP1 antibody. NUSAP1 was detected in a paraffin-embedded section of human stomach cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 2 ug/ml rabbit anti-NUSAP1 antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Immunofluorescent staining of NUSAP1 using anti-NUSAP1 antibody (red). NUSAP1 was detected in a paraffin-embedded section of human stomach cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 5 ug/ml rabbit anti-NUSAP1 antibody overnight at 4oC. Cy3 Conjugated Goat Anti-Rabbit IgG was used as secondary antibody at 1:500 dilution and incubated for 30 minutes at 37oC. The section was counterstained with DAPI nuclear stain (blue). Visualize using a fluorescence microscope and filter sets appropriate for the label used.
Immunohistochemical staining of NUSAP1 using anti-NUSAP1 antibody. NUSAP1 was detected in a paraffin-embedded section of human prostate cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1:100 rabbit anti-NUSAP1 antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Flow cytometry analysis of fixed and permeabilized human U251 cells with NUSAP1 antibody at 1ug/million cells (blocked with goat sera); Red=cells alone, Green=isotype control, Blue= NUSAP1 antibody.
Availability 1-2 days
Species Reactivity Human
Format Lyophilized
Host Rabbit
Clonality Polyclonal (rabbit origin)
Isotype Rabbit IgG
Purity Immunogen affinity purified
Buffer Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2 mg Na2HPO4.
UniProt Q9BXS6
Localization Nucleus, Nucleolus
Applications Western Blot : 0.25-0.5ug/ml
Immunohistochemistry : 2-5ug/ml
Immunofluorescence : 5ug/ml
Immunocytochemistry/Immunofluorescence : 5ug/ml
Flow Cytometry : 1-3ug/million cells
Limitations This NUSAP1 antibody is available for research use only.
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Description

NUSAP1 antibody detects Nucleolar and spindle-associated protein 1, a microtubule-binding protein essential for spindle formation and chromosome segregation during mitosis. The UniProt recommended name is Nucleolar and spindle-associated protein 1 (NUSAP1). This mitotic regulator links chromatin to microtubules, ensuring proper spindle assembly and stabilization required for accurate chromosome alignment and segregation.

Functionally, NUSAP1 antibody identifies a 495-amino-acid nuclear protein that localizes to the mitotic spindle and spindle poles. NUSAP1 binds microtubules through its C-terminal domain and bundles them into stable arrays, promoting bipolar spindle formation. It also interacts with chromatin components, including DNA and nucleolar proteins, to coordinate chromosome condensation and segregation during metaphase and anaphase.

The NUSAP1 gene, located on chromosome 15q15.1, encodes a cell cycle-regulated protein that peaks in expression during G2/M phase and is degraded after mitosis. NUSAP1 is phosphorylated by CDK1, controlling its localization and activity. It functions in concert with kinesin and dynein motors, contributing to spindle microtubule dynamics and mitotic checkpoint signaling.

Pathologically, elevated NUSAP1 expression is a hallmark of proliferating cells and various cancers, including breast, prostate, and lung carcinoma. Its overexpression correlates with increased tumor aggressiveness and poor prognosis, reflecting enhanced proliferative capacity. Conversely, NUSAP1 depletion leads to spindle defects, mitotic arrest, and genomic instability. Research with NUSAP1 antibody provides insight into cell division mechanisms and cancer cell cycle regulation.

NUSAP1 antibody is suitable for use in western blotting, immunofluorescence, and immunohistochemistry to detect mitotic spindles and cell cycle progression. NSJ Bioreagents supplies validated NUSAP1 antibody reagents ideal for studies of mitosis, chromosomal segregation, and cancer cell biology.

Structurally, NUSAP1 contains a coiled-coil domain, a microtubule-binding motif, and a DNA-binding region, which together mediate its dual role in chromatin attachment and microtubule bundling. This antibody supports exploration of NUSAP1�s role as a spindle scaffold that integrates chromosomal and cytoskeletal control during mitosis.

Application Notes

Optimal dilution of the NUSAP1 antibody should be determined by the researcher.

Immunogen

A synthetic peptide corresponding to a sequence in the middle region of human NUSAP1 was used as the immunogen for the NUSAP1 antibody.

Storage

After reconstitution, the NUSAP1 antibody can be stored for up to one month at 4oC. For long-term, aliquot and store at -20oC. Avoid repeated freezing and thawing.

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