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AB302647

Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free

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Chicken Recombinant Monoclonal Cathepsin D antibody. Carrier free. Suitable for WB, IHC-P, ICC/IF, Flow Cyt (Intra) and reacts with Human, Mouse, Rat samples.

View Alternative Names

CPSD, CTSD, Cathepsin D

8 Images
Flow Cytometry (Intracellular) - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)
  • Flow Cyt (Intra)

Supplier Data

Flow Cytometry (Intracellular) - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)

This data was developed using ab302646, the same antibody clone in a different buffer formulation.Flow cytometric analysis of 4% paraformaldehyde fixed 90% methanol permeabilized HepG2 (human hepatocellular carcinoma epithelial cell) cells labelling CTSD (cathepsin D) with ab302646 at 1/1000 dilution (0.1ug) (Red) compared with a Chicken IgY (Black) isotype control and an unlabelled control (cells without incubation with primary antibody and secondary antibody) (Blue). A Goat anti-Chicken IgY H&L (Alexa Fluor® 488, ab150173) at 1/2000 dilution was used as the secondary antibody.

Immunocytochemistry/ Immunofluorescence - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)
  • ICC/IF

Supplier Data

Immunocytochemistry/ Immunofluorescence - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)

This data was developed using ab302646, the same antibody clone in a different buffer formulation.Immunofluorescent analysis of 100% methanol-fixed, 0.1% TritonX-100 permeabilized HepG2 (human hepatocellular carcinoma epithelial cell) cells labelling CTSD (cathepsin D) with ab302646 at 1/100 (8.1 ug/ml ) dilution, followed by ab150173 Goat Anti-Chicken IgY H&L (Alexa Fluor® 488) preadsorbed antibody at 1/1000 2 ug/ml dilution (Green). Confocal image showing cytoplasmic staining in HepG2 cell line is observed. ab179513 Anti-beta Tubulin rabbit monoclonal antibody was used to counterstain tubulin at 1/200 10ug/ml dilution (Red). The Nuclear counterstain was DAPI (Blue). Secondary antibody only control : Secondary antibody is ab150173 Goat Anti-Chicken IgY H&L (Alexa Fluor® 488) preadsorbed at 1/1000 2 ug/ml dilution.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)

This data was developed using ab302646, the same antibody clone in a different buffer formulation. Immunohistochemical analysis of paraffin-embedded Human breast carcinoma tissue labeling CTSD (cathepsin D) with ab302646 at 1/10000 (0.08 µg/mL) followed by a ready to use LeicaDS9800 (Bond™ Polymer Refine Detection) was used. Cytoplasmic with granular staining on human breast carcinoma. The section was incubated with ab302646 for 30 mins at room temperature, followed by Anti-Chicken IgY antibody (ab97136) for 8 mins during the LeicaDS9800 kit staining procedure. The immunostaining was performed on a Leica Biosystems BOND® RX instrument Counterstained with Hematoxylin. Secondary antibody only control : Secondary antibody is a ready to use LeicaDS9800 (Bond™ Polymer Refine Detection). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution2) for 20 mins.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)

This data was developed using ab302646, the same antibody clone in a different buffer formulation. Immunohistochemical analysis of paraffin-embedded Human liver tissue labeling CTSD (cathepsin D) with ab302646 at 1/10000 (0.08 µg/mL) followed by a ready to use LeicaDS9800 (Bond™ Polymer Refine Detection). Cytoplasmic with granular staining on human liver. The section was incubated with ab302646 for 30 mins at room temperature, followed by Anti-Chicken IgY antibody (ab97136) for 8 mins during the LeicaDS9800 kit staining procedure.The immunostaining was performed on a Leica Biosystems BOND® RX instrument Counterstained with Hematoxylin. Secondary antibody only control : Secondary antibody is a ready to use LeicaDS9800 (Bond™ Polymer Refine Detection).Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution2) for 20 mins

Flow Cytometry (Intracellular) - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)
  • Flow Cyt (Intra)

Supplier Data

Flow Cytometry (Intracellular) - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)

This data was developed using ab302646, the same antibody clone in a different buffer formulation.Flow cytometric analysis of 4% paraformaldehyde fixed 90% methanol permeabilized Neuro-2a (mouse neuroblastoma neuroblast) cells labelling CTSD (cathepsin D) with ab302646 at 1/1000 dilution (0.1ug) (Red) compared with a Chicken IgY (Black) isotype control and an unlabelled control (cells without incubation with primary antibody and secondary antibody) (Blue). A Goat anti-Chicken IgY H&L (Alexa Fluor® 488, ab150173) at 1/2000 dilution was used as the secondary antibody.

Immunocytochemistry/ Immunofluorescence - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)
  • ICC/IF

Supplier Data

Immunocytochemistry/ Immunofluorescence - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)

This data was developed using ab302646, the same antibody clone in a different buffer formulation.Immunofluorescent analysis of 100% methanol-fixed, 0.1% TritonX-100 permeabilized Neuro-2a (mouse neuroblastoma neuroblast) cells labelling CTSD (cathepsin D) with ab302646 at 1/100 (8.1 ug/ml ) dilution, followed by ab150173 Goat Anti-Chicken IgY H&L (Alexa Fluor® 488) preadsorbed antibody at 1/1000 2 ug/ml dilution (Green). Confocal image showing cytoplasmic staining in Neuro-2a cell line is observed. ab179513 Anti-beta Tubulin rabbit monoclonal antibody was used to counterstain tubulin at 1/200 10ug/ml dilution (Red). The Nuclear counterstain was DAPI (Blue). Secondary antibody only control : Secondary antibody is ab150173 Goat Anti-Chicken IgY H&L (Alexa Fluor® 488) preadsorbed at 1/1000 2 ug/ml dilution.

Western blot - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)
  • WB

Supplier Data

Western blot - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)

This data was developed using ab302646, the same antibody clone in a different buffer formulation.

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

Exposure time : 5.5 seconds.

All lanes:

Western blot - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) (<a href='/en-us/products/primary-antibodies/cathepsin-d-antibody-epr3057y-chicken-igy-chimeric-ab302646'>ab302646</a>) at 1/1000 dilution

Lane 1:

MCF7 (human breast adenocarcinoma epithelial cell), whole cell lysate at 20 µg

Lane 2:

SH-SY5Y (human neuroblastoma epithelial cell), whole cell lysate at 20 µg

Lane 3:

SK-BR-3 (human breast adenocarcinoma epithelial cell), whole cell lysate at 20 µg

Lane 4:

U937 (human histiocytic lymphoma monocyte), whole cell lysate at 20 µg

Lane 5:

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

Lane 6:

HepG2 (human hepatocellular carcinoma epithelial cell), whole cell lysate at 20 µg

Lane 7:

RAW264.7 (mouse Abelson murine leukemia virus-induced tumor macrophage), whole cell lysate at 20 µg

Lane 8:

Neuro-2a (mouse neuroblastoma neuroblast), whole cell lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Chicken IgY H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-chicken-igy-h-l-hrp-ab6877'>ab6877</a>) at 1/20000 dilution

Observed band size: 14 kDa,28 kDa,46 kDa

false

Exposure time: 5.5s

Western blot - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)
  • WB

Supplier Data

Western blot - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) - BSA and Azide free (AB302647)

This data was developed using ab302646, the same antibody clone in a different buffer formulation.

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

Exposure time : 10 seconds.

All lanes:

Western blot - Anti-Cathepsin D antibody [EPR3057Y] - Chicken IgY (Chimeric) (<a href='/en-us/products/primary-antibodies/cathepsin-d-antibody-epr3057y-chicken-igy-chimeric-ab302646'>ab302646</a>) at 1/1000 dilution

Lane 1:

Human heart tissue lysate at 20 µg

Lane 2:

Mouse brain tissue lysate at 20 µg

Lane 3:

Rat stomach tissue lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Chicken IgY H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-chicken-igy-h-l-hrp-ab6877'>ab6877</a>) at 1/20000 dilution

Observed band size: 14 kDa,28 kDa,46 kDa

false

Exposure time: 10s

Key facts

Host species

Chicken

Clonality

Monoclonal

Clone number

EPR3057Y-CkIgY

Isotype

IgY

Carrier free

Yes

Reacts with

Human, Mouse, Rat

Applications

WB, IHC-P, Flow Cyt (Intra), ICC/IF

applications

Immunogen

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

Reactivity data

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Product details

ab302647 is a carrier free version of ab302646.

This chicken monoclonal chimeric antibody has been engineered from RabMab parent antibody (ab75852). By necessity, some rabbit sequence is retained as part of the variable domain. When multiplexing with other rabbit-derived antibodies, using across absorbed Fc-reactive secondary antibodies are recommended.

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.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Thiophilic Resin
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.

Cathepsin D also known as CTSD is a protein with a mass of approximately 45 kDa. It functions as an aspartyl protease and is expressed in lysosomes across various tissues including the liver and kidneys. This enzyme acts by cleaving peptide bonds within proteins which is essential for protein degradation and turnover. Cathepsin D exists as precursor forms that become activated in the acidic environment of the lysosome. It plays a critical role in normal cellular processes by maintaining protein homeostasis.
Biological function summary

The enzymatic activity of Cathepsin D is important for cellular maintenance and apoptosis. This protease does not act within larger protein complexes but contributes to the degradation of extracellular and intracellular proteins. It mediates processes like antigen processing where it deconstructs proteins into peptides that are presented on major histocompatibility complex (MHC) molecules. ELISA tests can quantify its expression levels sometimes termed as CTSD activity in various biological samples offering insights into its role within cellular environments.

Pathways

Cathepsin D involvement includes the lysosomal degradation pathway and the apoptotic signaling pathway. In the lysosomal degradation pathway Cathepsin D breaks down proteins and peptides a process important for cellular recycling and energy release. It interacts with other lysosomal enzymes such as Cathepsin B in this pathway ensuring comprehensive breakdown of cellular waste. The apoptotic signaling pathway involves the regulation of programmed cell death where Cathepsin D can influence the activation of downstream proteins like Bcl-2 and Bax which control cell survival.

The overexpression of Cathepsin D links to breast cancer and Alzheimer's disease. In breast cancer increased Cathepsin D expression correlates with tumor progression and metastasis influencing tumor behavior through interactions with other proteins involved in cell proliferation. Alzheimer's disease features the involvement of Cathepsin D in the breakdown of amyloid precursor protein which relates to amyloid beta plaque accumulation. The abnormal activity of Cathepsin D in these disorders makes it a potential target for therapeutic antibodies such as CTSD antibodies which aim to regulate its function.

Product protocols

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

Target data

Acid protease active in intracellular protein breakdown. Plays a role in APP processing following cleavage and activation by ADAM30 which leads to APP degradation (PubMed : 27333034). Involved in the pathogenesis of several diseases such as breast cancer and possibly Alzheimer disease.
See full target information CTSD

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