Description

Protamine A, Acipenser Stellatus is a highly purified, low molecular weight protein derived from the sperm of the starry sturgeon (Acipenser stellatus). This compound is of significant interest in life science research and pharmaceutical development due to its unique polycationic nature and specific biological activity. It is primarily utilized by researchers and manufacturers in the biotechnology, pharmaceutical, and diagnostic sectors for specialized applications requiring high-purity protein reagents.

Application

• Pharmaceutical Research: Investigation as a heparin antagonist and for studying polycation-protein interactions.
• Bioconjugation & Drug Delivery: Potential use as a carrier or complexing agent for nucleic acids (e.g., DNA, RNA) in transfection and delivery system development.
• Biochemical Reagent: Serves as a standard or reagent in enzymatic studies, protein purification processes, and chromatography.
• Diagnostic Development: Used in the formulation and calibration of certain clinical diagnostic assays and kits.
• Cell Culture & Tissue Engineering: Exploration in surface modification and scaffold functionalization to influence cell adhesion and growth.
• Food Science Research: Study of its functional properties in specialized food-grade applications (subject to appropriate grade availability).

Basic Information

Product Name	Protamine A, Acipenser Stellatus
CAS No.	69680-76-8
Molecular Formula	Contact for details
Molecular Weight	~4,000 - 6,000 Da (Approx.)
Synonyms	Sturgeon Protamine A; Protamine A (Starry Sturgeon); Acipenser stellatus Protamine; Clupeine-type Protamine; Salmine A (related); Iridine; Basic Nuclear Protein; Sperm-specific Protein
EINECS	Contact for details

Quality Control

Our Protamine A, Acipenser Stellatus is produced and tested under strict quality management systems. Each batch is characterized to ensure identity, purity, and consistency, meeting high standards for research and development use. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing specifications such as assay/purity, moisture content, and identification. We support compliance with relevant guidelines for research-grade biochemicals.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as indicated on the label or COA. This product is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to minimize exposure to atmospheric moisture. For long-term storage, consider desiccated conditions at -20°C.

Specification

Item	Specification
Appearance	White to off-white powder or solid
Identification (IR / HPLC)	Conforms to reference standard
Assay (Protein Content)	≥ 90% (by weight, anhydrous basis)
Purity (HPLC)	≥ 95% (Area Percent)
Water Content (Karl Fischer)	≤ 5.0 %
Residue on Ignition	≤ 1.0 %
Biological Activity	As per internal reference (e.g., Heparin neutralization)

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