SPATKIN

SPATKIN simulates biomolecular site dynamics in two-dimensional spatial systems using a lattice-based, network-free rule-based algorithm that tracks Brownian motion and stochastic reaction events.

Key Features:

• Lattice-Based Methodology: Tracks individual molecules and molecular complexes as they occupy distinct lattice sites in two-dimensional space with exclusive site occupancy.
• Network-Free Simulation: Uses rules directly as event generators and avoids pre-generation of an entire reaction network.
• Rule-Based Modeling: Represents molecular interactions and dynamics through concise rule definitions.
• BioNetGen Language Extension: Employs an extended BioNetGen language that includes constructs for specifying spatial properties of biomolecules.
• Brownian Motion and Stochastic Reactions: Simulates Brownian motion and stochastic reaction events defined by rules.
• Simulation of Membrane-Associated Processes: Models adsorption, desorption, and molecular crowding on membranes.

Scientific Applications:

• Biomolecular dynamics: Simulation-based investigation of spatially resolved biomolecular site dynamics.
• Membrane-associated process modeling: Study of adsorption, desorption, and crowding effects on membranes.
• Signaling pathway spatial analysis: Examination of spatial aspects of signaling reactions and complex formation.
• Diffusion and interaction dynamics: Analysis of molecular diffusion and reaction events in two-dimensional environments.
• Spatial constraint effects on biochemistry: Evaluation of how spatial restrictions influence biochemical reaction behavior.

Methodology:

Lattice-based simulation algorithm that tracks Brownian motion and stochastic reaction events; network-free execution using rules as event generators rather than pre-generating reaction networks; models expressed in an extended BioNetGen language.