Bioactivity
(Cathepsin D is a lysosomal aspartic protease of the pepsin family. Human cathepsin D is synthesized as a precursor protein, consisting of a signal peptide (residues 118), a propeptide (residues 1964), and a mature chain (residues 65412). The mature chain can be processed further to the light (residues 65161) and heavy (residues 169412) chains. It is expressed in most cells and overexpressed in breast cancer cells. It is a major enzyme in protein degradation in lysosomes, and also involved in the presentation of antigenic peptides. Mice deficient in this enzyme showed a progressive atrophy of the intestinal mucosa, a massive destruction of lymphoid organs, and a profound neuronal ceroid lipofucinosis, indicating that cathepsin D is essential for proteolysis of proteins regulating cell growth and tissue homeostasis. The activity of recombinant human CTSD is measured by its ability to cleave a fluorogenic peptide substrate MCA-Pro-Leu-Gly-Leu-DPA-Ala-Arg-NH2 in the assay buffer 0.1 M NaOAc, 0.2 M NaCl, pH 3.5. The rhCTSD is diluted to 20 ug/ml in assay buffer, then incubated at 37 degree C for 30min. The incubated rhCTSD is diluted to 5 ug/mL in assay buffer. Loading into a black well plate 50 uL of 5 ug/mL rhCTSD and start the reaction by adding 50 uL of 60 uM substrate, with a substrate blank containing 50 uL assay buffer, 50 uL substrate, and no rhCTSD. Then read at excitiation and emission wavelengths of 320 nm and 405 nm, respectively, in kinetic mode for 5 minutes. The specific activity of recombinant human CTSD is > 675 pmol/min/ug.)
Cathepsin D (CTSD) Active Protein | CTSD active protein
Active Cathepsin D (CTSD)
Gene Names
CTSD; CPSD; CLN10
Applications
Activity Assay, Cell Culture
Purity
Greater than 90% by SDS-PAGE
Synonyms
Cathepsin D (CTSD); N/A; Active Cathepsin D (CTSD); Cathepsin D; CTSD active protein (eukaryotic,293F cell), Human; CPSD; CLN10; Lysosomal Aspartyl Protease; Ceroid-Lipofuscinosis,Neuronal 104; CTSD active protein
Host
293F cell
Purity/Purification
Greater than 90% by SDS-PAGE
Form/Format
Freeze-dried powder; PBS, pH7.4, containing 0.01% SKL, 1mM DTT, 5% Trehalose and Proclin300.
Sequence
Leu21~Leu412
Applicable Applications for CTSD active protein
Activity Assay, Cell Culture
Species
Human
Expression System
Eukaryotic expression
Tag
N-terminal His Tag
Endotoxin Level
<1.0EU per 1ug (determined by the LAL method)
Isoelectric Point
6.5
Research Area
Tumor immunity
Preparation and Storage
Store at 2-8 degree C for one month, -80 degree C for 12 months
Bioactivity
(Cathepsin D is a lysosomal aspartic protease of the pepsin family. Human cathepsin D is synthesized as a precursor protein, consisting of a signal peptide (residues 118), a propeptide (residues 1964), and a mature chain (residues 65412). The mature chain can be processed further to the light (residues 65161) and heavy (residues 169412) chains. It is expressed in most cells and overexpressed in breast cancer cells. It is a major enzyme in protein degradation in lysosomes, and also involved in the presentation of antigenic peptides. Mice deficient in this enzyme showed a progressive atrophy of the intestinal mucosa, a massive destruction of lymphoid organs, and a profound neuronal ceroid lipofucinosis, indicating that cathepsin D is essential for proteolysis of proteins regulating cell growth and tissue homeostasis. The activity of recombinant human CTSD is measured by its ability to cleave a fluorogenic peptide substrate MCA-Pro-Leu-Gly-Leu-DPA-Ala-Arg-NH2 in the assay buffer 0.1 M NaOAc, 0.2 M NaCl, pH 3.5. The rhCTSD is diluted to 20 ug/ml in assay buffer, then incubated at 37 degree C for 30min. The incubated rhCTSD is diluted to 5 ug/mL in assay buffer. Loading into a black well plate 50 uL of 5 ug/mL rhCTSD and start the reaction by adding 50 uL of 60 uM substrate, with a substrate blank containing 50 uL assay buffer, 50 uL substrate, and no rhCTSD. Then read at excitiation and emission wavelengths of 320 nm and 405 nm, respectively, in kinetic mode for 5 minutes. The specific activity of recombinant human CTSD is > 675 pmol/min/ug.)
Bioactivity
(Cathepsin D is a lysosomal aspartic protease of the pepsin family. Human cathepsin D is synthesized as a precursor protein, consisting of a signal peptide (residues 118), a propeptide (residues 1964), and a mature chain (residues 65412). The mature chain can be processed further to the light (residues 65161) and heavy (residues 169412) chains. It is expressed in most cells and overexpressed in breast cancer cells. It is a major enzyme in protein degradation in lysosomes, and also involved in the presentation of antigenic peptides. Mice deficient in this enzyme showed a progressive atrophy of the intestinal mucosa, a massive destruction of lymphoid organs, and a profound neuronal ceroid lipofucinosis, indicating that cathepsin D is essential for proteolysis of proteins regulating cell growth and tissue homeostasis. The activity of recombinant human CTSD is measured by its ability to cleave a fluorogenic peptide substrate MCA-Pro-Leu-Gly-Leu-DPA-Ala-Arg-NH2 in the assay buffer 0.1 M NaOAc, 0.2 M NaCl, pH 3.5. The rhCTSD is diluted to 20 ug/ml in assay buffer, then incubated at 37 degree C for 30min. The incubated rhCTSD is diluted to 5 ug/mL in assay buffer. Loading into a black well plate 50 uL of 5 ug/mL rhCTSD and start the reaction by adding 50 uL of 60 uM substrate, with a substrate blank containing 50 uL assay buffer, 50 uL substrate, and no rhCTSD. Then read at excitiation and emission wavelengths of 320 nm and 405 nm, respectively, in kinetic mode for 5 minutes. The specific activity of recombinant human CTSD is > 675 pmol/min/ug.)
SDS-PAGE
(Figure. SDS-PAGE)
SDS-PAGE
(Figure. SDS-PAGE)
Product Categories/Family for CTSD active protein
NCBI and Uniprot Product Information
NCBI GI #
NCBI GeneID
NCBI Accession #
NCBI GenBank Nucleotide #
Molecular Weight
44,552 Da
NCBI Official Full Name
cathepsin D preproprotein
NCBI Official Synonym Full Names
cathepsin D
NCBI Official Symbol
CTSD
NCBI Official Synonym Symbols
CPSD; CLN10
NCBI Protein Information
cathepsin D; lysosomal aspartyl protease; lysosomal aspartyl peptidase; ceroid-lipofuscinosis, neuronal 10
UniProt Protein Name
Cathepsin D
UniProt Gene Name
CTSD
UniProt Synonym Gene Names
CPSD
UniProt Entry Name
CATD_HUMAN
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Product Notes
The CTSD ctsd (Catalog #AAA161838) is an Active Protein produced from 293F cell and is intended for research purposes only. The product is available for immediate purchase. AAA Biotech's Cathepsin D (CTSD) can be used in a range of immunoassay formats including, but not limited to, Activity Assay, Cell Culture. Researchers should empirically determine the suitability of the CTSD ctsd for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. The amino acid sequence is listed below: Leu21~Leu4 12. It is sometimes possible for the material contained within the vial of "Cathepsin D (CTSD), Active Protein" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.Item has been added to Shopping Cart
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