Modeling highly sulfated infernan

Area of Science:

• Biochemistry
• Molecular Biology
• Structural Biology

Background:

• Sulfated glycosaminoglycans (GAGs) are crucial linear, negatively charged polysaccharides involved in tissue structure and physiology.
• Exopolysaccharides (EPS) with mimetic properties, like highly sulfated infernan (InfHS), are of growing interest.
• Understanding the bioactivity of these molecules hinges on their specific structural features.

Purpose of the Study:

• To construct and simulate a molecular model of infernan (InfHS).
• To characterize the molecular properties of InfHS.
• To provide a structural basis for understanding InfHS bioactivity.

Main Methods:

• Computational modeling and simulation of the InfHS structure.
• Analysis of intramolecular interactions and structural folding.
• Comparison of molecular polarization with linear sulfated GAGs.

Main Results:

• Increased intramolecular interactions and structural folding were observed with added repeating units in the InfHS model.
• The branched structure and high sulfation of InfHS result in pronounced molecular polarization.
• InfHS exhibits distinct molecular properties compared to linear sulfated GAGs.

Conclusions:

• The study successfully characterized the molecular properties of InfHS through modeling and simulation.
• The unique structural features of InfHS, including branching and high sulfation, dictate its distinct molecular behavior.
• These findings offer a structural rationale for the bioactivity of InfHS.