Atomic Sequence Rearrangement Using 3D Chiral Marking
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Solution Overview
Problem
Current methods for rearranging atomic sequences in molecular structures rely solely on 2D topological comparisons, leading to inaccuracies due to the exclusion of 3D features, necessitating manual inspection and inefficiency.
Innovation Solution
A method that incorporates 3D information through atomic sequence chirality measurement and marking, followed by a second rearrangement step, using the reference structure to ensure accurate alignment, including the is_isomorphic method from the networkx algorithm for initial rearrangement and dihedral angle analysis for chirality determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 2D topological comparison method is used for atomic sequence rearrangement, then the rearrangement process is simple and fast, but the accuracy of atomic sequence matching deteriorates due to inability to consider 3D structural features
Solution Approach 1:
The patent transitions from 2D topological comparison to 3D spatial configuration comparison by calculating dihedral angles and atomic coordinates. This dimensional expansion allows the method to capture chiral information and spatial arrangements that 2D methods miss, directly resolving the accuracy issue while maintaining computational feasibility through algorithmic optimization
2Measurement precision
If manual inspection is performed after topological rearrangement to correct 3D feature mismatches, then atomic sequence accuracy is improved, but the overall process efficiency deteriorates
Solution Approach 1:
The patent implements automated detection and correction of 3D configuration mismatches through algorithmic comparison of dihedral angles and atomic coordinates. The system self-corrects chiral errors without human intervention by systematically comparing spatial parameters and reassigning atomic sequences that violate stereochemical rules, eliminating the need for manual inspection while maintaining high accuracy
3Device complexity
If only topological connection information is used for rearrangement, then the rearrangement process is computationally efficient, but the reliability of force field energy calculation deteriorates due to sequence disorders
Solution Approach 1:
The patent performs preliminary validation of 3D spatial configurations and chiral consistency before finalizing the atomic sequence for force field calculations. By pre-checking dihedral angles and spatial arrangements, the method ensures that the sequence passed to energy calculation routines is stereochemically correct, preventing unreliable results while adding minimal computational overhead compared to full 3D optimization
Data Source
AI summary
A method of atomic sequence rearrangement, includes the following steps. Topological rearrangement: the atomic sequence of the target structure is rearranged referring to the reference structure using the two-dimensional topological rearrangement method. Judgment of equivalent atoms: judge the equivalent atoms in the topological structure. Measuring and marking: mark the atomic chiral information of the rearranged structure and the reference structure. Second rearrangement: refer to the reference structure for the second rearrangement of the atomic sequence for the rearranged structure.