3Matrix

3Matrix visualizes protein sequence motifs within three-dimensional protein structures to analyze conserved amino acid patterns and their structural context.

Key Features:

• 3D Motif Visualization: Displays protein sequence motifs within three-dimensional protein structures to examine spatial relationships among conserved residues.
• Flexible Query Input: Accepts queries including raw protein sequences, keywords, structural information, and defined sequence motifs for motif-based structural analysis.
• Multiple Motif Format Support: Supports discrete sequence motifs such as PROSITE patterns and eMOTIFs, as well as position-specific scoring matrices including eMATRICES.
• Multiple Sequence Alignment Conversion: Converts blocks from multiple sequence alignments into eMATRICES for structural motif visualization.
• Protein Structure Database Searching: Searches protein structure databases to identify structural matches for user-defined motifs.
• Motif Property Visualization: Represents sequence conservation and solvent-accessible surface area of motif residues using color-shaded structural representations.

Scientific Applications:

• Protein Family Classification: Identifies conserved amino acid residues to group related proteins into families.
• Functional Residue Analysis: Investigates functional and structural roles of conserved residues within protein motifs.
• Structure–Function Studies: Examines how sequence motifs contribute to protein stability, interaction interfaces, and structural architecture.

Methodology:

3Matrix identifies conserved amino acid motifs using sequence alignment and motif construction methods and maps these motifs onto three-dimensional protein structures retrieved from protein structure databases.