Description

S-Layer Protein, Lactobacillus is a crystalline surface layer protein derived from specific strains of Lactobacillus bacteria. This unique biopolymer is valued for its self-assembling properties, forming a two-dimensional, porous lattice structure with significant functional versatility. It serves as a critical functional biomaterial in advanced research and industrial applications, particularly in the development of novel delivery systems, biosensors, and biocompatible surfaces. Key industries leveraging this technology include pharmaceuticals, probiotics, nanotechnology, and food science.

Application

• Development of nanocarriers for targeted drug and nutrient delivery systems.
• Immobilization matrix for enzymes, antibodies, or antigens in diagnostic biosensors and affinity chromatography.
• Surface functionalization agent to create biocompatible and anti-adhesive coatings for medical implants.
• Stabilizing and protective layer for probiotic formulations to enhance gastric survival.
• As a molecular sieve or ultrafiltration membrane component in separation technology.
• Template for the biomineralization and synthesis of ordered nanostructures.
• Research tool in structural biology and bacterial adhesion studies.
• Potential adjuvant or carrier system in vaccine development.

Basic Information

Product Name	S-Layer Protein, Lactobacillus
CAS No.	149024-90-8
Molecular Formula	Contact for details
Molecular Weight	40-200 kDa (Strain-dependent)
Synonyms	S-Layer Protein; Surface Layer Protein; Crystalline Surface Layer; S-Layer Glycoprotein; Bacterial S-Layer; Lactobacillus S-Layer; SLH Domain Protein; Para-crystalline Surface Array Protein
EINECS	Contact for details

Quality Control

Our S-Layer Protein is produced and handled under stringent quality management protocols. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and functional consistency. We provide full traceability and support our products with a detailed Certificate of Analysis (COA), which includes data on protein content, purity by SDS-PAGE/HPLC, endotoxin levels, and biological activity where applicable. Our quality systems are designed to support research and GMP-oriented applications.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below for long-term stability. This material is hygroscopic (moisture-sensitive); allow the vial to equilibrate to room temperature in a desiccator before opening to prevent condensation. For short-term use, store at 2-8°C. Use under controlled, dry conditions.

Specification

Item	Specification
Appearance	White to off-white lyophilized powder
Identification (SDS-PAGE)	Conforms to reference standard
Protein Content (Biuret/BCA)	≥ 90%
Purity (SDS-PAGE, densitometry)	≥ 95%
Endotoxin (LAL test)	< 10 EU/mg
Solubility	Soluble in appropriate aqueous buffers
Reconstitution	Forms clear to slightly opalescent solution
Biological Activity (if claimed)	Specific assay-dependent

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