Human PSP94 Alexa Fluor® 700-conjugated Antibody
R&D Systems, part of Bio-Techne | Catalog # AF3780N
Conjugate
Catalog #
Key Product Details
Species Reactivity
Human
Applications
Western Blot
Label
Alexa Fluor 700 (Excitation = 675-700 nm, Emission = 723 nm)
Antibody Source
Polyclonal Goat IgG
Product Specifications
Immunogen
E. coli-derived recombinant human PSP94 isoform 1 (R&D Systems, Catalog # 3780-PS)
Ser21-Ile114
Accession # P08118
Ser21-Ile114
Accession # P08118
Specificity
Detects human PSP94 in direct ELISAs and Western blots.
Clonality
Polyclonal
Host
Goat
Isotype
IgG
Applications for Human PSP94 Alexa Fluor® 700-conjugated Antibody
Application
Recommended Usage
Western Blot
Optimal dilution of this antibody should be experimentally determined.
Formulation, Preparation, and Storage
Purification
Antigen Affinity-purified
Formulation
Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide
Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
Background: PSP94/MSMB
PSP94 (prostate secretory protein of 94 amino acids; also named beta-MSP) is a secreted, non-glycosylated member of the beta-microseminoprotein family (1). The 94 amino acid (aa) mature PSP94 contains no classic motifs or domains, but does have ten Cys that are conserved across species (1, 2). It is expressed in mucoid secretions, but its function is unknown (2, 3). PSP94 is abundant in prostatic fluid, which is the exclusive source in rodents (4). Gastric and respiratory secretory epithelia are also significant sources in humans (2, 3). Human PSP94 circulates bound to a 71 kDa PSP binding protein, possibly disulfide-linked (5). The seminal fluid protein CRISP-3 can also bind PSP94 (6). PSP94 has been proposed as an alternative to PSA as a serum marker for prostate cancer. When total (bound plus free) PSP94 is considered, its secretion is found to be down-regulated in cancer cells, creating below normal circulating levels (7, 8). Its size is predicted at 11 kDa, but may appear to be 16 kDa due to anomalous migration (3). A 61 aa variant, formed by C-terminal proteolysis, is increased in prostate secretions from patients with benign prostatic hyperplasia (9). A prostate-specific alternate splice form shows a substitution of 41 aa for the C-terminal 78 aa (10). Mature human PSP94 shares 53%, 46%, 43%, and 42% aa identity with porcine, rat, mouse, and chicken PSP94, respectively. Most of the ten primate sequences available show less than 80% aa identity. PSP94 has been proposed as a species barrier protein due to its low evolutionary conservation and abundance in seminal fluid (11).
Long Name
Prostate Secretory Protein of 94 Amino Acids/Microseminoprotein, beta
Alternate Names
IGBF, MSMB, MSPB, PIP, PN44, PRPS, PSP57
Gene Symbol
MSMB
UniProt
Additional PSP94/MSMB Products
Product Specific Notices for Human PSP94 Alexa Fluor® 700-conjugated Antibody
This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.
For research use only
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