SNPMOL

SNPMOL analyzes genetic variants of tryptophan hydroxylase 2 (TPH2) to predict their effects on protein structure and function relevant to serotonin biosynthesis and psychiatric disorders.

Key Features:

• TPH2-focused variant dataset: Compiles genetic variants of TPH2 that are associated with psychiatric disorders.
• Functional and stability predictions: Assesses functional impacts and stability changes using ten distinct computational algorithms.
• Evolutionary conservation analysis: Uses ConSurf to evaluate amino-acid conservation within TPH2.
• Molecular dynamics simulations (GROMACS): Performs MD simulations with GROMACS on specific TPH2 variants including P260S, P206S, R303W, and R441H.
• Catalytic-domain impact annotation: Identifies variants located in the catalytic domain as tending to have more significant detrimental effects on structure and function.
• Consensus deleterious variants: Reports S364K and S383F as predicted deleterious by all functional algorithms and situated at evolutionarily conserved positions.
• Structural effect characterization: Documents MD-derived effects such as altered flexibility, essential mobility, and changes in dimer binding affinity and stability for mutations including P206S, R303W, and R441H across catalytic and oligomerization domains.

Scientific Applications:

• Molecular mechanism studies: Elucidates how TPH2 mutations may affect serotonin biosynthesis and contribute to psychiatric disorders.
• Variant prioritization: Prioritizes TPH2 variants for experimental validation based on predicted deleteriousness and conservation.
• Structural interpretation: Interprets consequences of mutations on enzyme activity, dimerization, and protein stability.
• Experimental design and therapy research: Informs experimental design and therapeutic strategy development related to TPH2 dysfunction.

Methodology:

Functional and stability predictions were generated using ten computational algorithms; evolutionary conservation was assessed with ConSurf; molecular dynamics simulations were performed with GROMACS on specified TPH2 variants.