Description

Sj23 Antigen, Schistosoma Japonicum is a purified protein antigen derived from the parasitic trematode *Schistosoma japonicum*, specifically associated with the Sj23 membrane protein. This high-purity biological reagent is critical for the development and production of diagnostic assays and research tools for schistosomiasis. It is primarily utilized by manufacturers of immunodiagnostic kits, vaccine researchers, and academic institutions conducting parasitology and tropical disease studies to enable accurate detection and immunological investigation of this significant human pathogen.

Application

• Immunodiagnostic Kit Manufacturing: Core component for ELISA, immunoblot, and lateral flow assays designed to detect anti-*Schistosoma japonicum* antibodies in human or animal serum samples.
• Vaccine Research & Development: Used as a target antigen in immunological studies to evaluate vaccine candidate efficacy and host immune responses.
• Serological Reference Standards: Serves as a critical reagent for the calibration and validation of diagnostic equipment and assay performance.
• Academic & Clinical Research: Essential tool for studies on schistosomiasis pathogenesis, host-parasite interactions, and the development of novel therapeutic strategies.
• Quality Control & Assurance: Employed by diagnostic kit producers as a positive control to ensure batch-to-batch consistency and assay reliability.
• Epidemiological Surveillance: Facilitates large-scale screening and monitoring of schistosomiasis prevalence in endemic regions.

Basic Information

Product Name	Sj23 Antigen, Schistosoma Japonicum
CAS No.	143220-71-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Sj23 Antigen; Schistosoma japonicum 23 kDa antigen; Sj23 membrane protein antigen; Schistosoma japonicum diagnostic antigen; Sj23 recombinant antigen; Anti-Schistosoma japonicum antigen; Schistosome antigen Sj23
EINECS	Contact for details

Quality Control

Our Sj23 Antigen is manufactured under stringent conditions to ensure high purity, specificity, and batch-to-batch consistency, which are paramount for diagnostic and research applications. Each lot undergoes comprehensive analytical testing, including SDS-PAGE, Western Blot, and protein concentration assays. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and functional activity is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store lyophilized material at -20°C or below. Reconstituted aliquots should be stored at -70°C to -80°C and avoid repeated freeze-thaw cycles. The product is hygroscopic (moisture-sensitive); ensure containers are sealed properly after use.

Specification

Item	Specification
Appearance	White to off-white lyophilized powder
Identification (Western Blot)	Reacts with specific anti-Sj23 antibody
Purity (SDS-PAGE)	≥ 90%
Protein Content (BCA)	≥ 95% of total weight
Endotoxin Level (LAL)	< 1.0 EU/µg
Solubility	Soluble in PBS or appropriate aqueous buffer
Biological Activity (ELISA)	Positive reactivity in standardized assay

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.