MPtopoQuerier

MPtopoQuerier queries the MPtopo database and integrates MPEx hydropathy analysis to retrieve and analyze membrane proteins with experimentally validated transmembrane (TM) segment assignments for topology validation and prediction support.

Key Features:

• Curated Database Access: Accesses MPtopo, a curated database of membrane proteins with TM topologies confirmed by experimental methods such as crystallography and gene fusion.
• SQL-Based Search Engine: Incorporates an SQL-based search engine to query MPtopo and retrieve sequences and topology annotations.
• MPEx Integration: Integrates MPEx, a Java-based hydropathy-plot tool, to automatically generate hydrophobicity profiles for retrieved sequences.
• Java Implementation: Implemented as a Java-based application for database querying and integration with MPEx.

Scientific Applications:

• Topology Validation: Provides experimentally validated TM assignments from MPtopo to validate topology-prediction algorithms.
• Predictor Development: Supplies benchmark data for development and refinement of computational tools for membrane protein topology prediction.
• Hydrophobicity Analysis: Enables analysis of hydropathy plots and hydrophobicity profiles via MPEx to assess TM segment predictions.

Methodology:

Connects to the MPtopo database, executes SQL-based queries to retrieve sequences and topology annotations, and performs hydropathy-plot analysis via MPEx using experimentally validated TM annotations derived from crystallography and gene fusion.