🔧 Tool 1: Clustal Omega + ESPript3

Step 1: Perform Alignment with Clustal Omega

Clustal Omega is a fast and scalable MSA tool developed by EMBL-EBI. It can handle large datasets and outputs high-quality alignments in several formats (Clustal, FASTA, PHYLIP, etc.).

How to use:

1. Go to Clustal Omega webserver.
2. Paste your protein sequences in FASTA format.
3. Choose the output format as Clustal (.aln).
4. Click Submit to run the alignment.
5. Download the resulting .aln file.

Step 2: Visualize with ESPript3

Once you have the .aln file, use ESPript3 to generate a clean and customizable graphical output of your alignment.

Key Features of ESPript3:

• Color-coding of conserved residues
• Secondary structure annotation
• Logo-style conservation bars
• Supports both sequence-only and structure-based alignments

How to use:

1. Go to the ESPript3 server.
2. Upload your .aln file under the “MSA file” section.
3. Customize visualization options (color schemes, numbering, secondary structure overlay, etc.).
4. Click Submit to generate a PDF or PostScript output of the alignment.

🔍 Tip: ESPript3 works best with Clustal or aligned FASTA files. You can also upload a PDB file to overlay secondary structure.

🔧 Tool 2: JalView

JalView is a powerful desktop application for alignment visualization, editing, and analysis.

Key Features:

• Interactive GUI for manual adjustment of alignments
• Real-time coloring by conservation, hydrophobicity, charge, etc.
• Integrated phylogenetic tree generation
• Secondary structure prediction and RNA structure support
• Export to various formats including PNG, HTML, or EPS

How to use:

1. Download and install JalView from https://www.jalview.org.
2. Open JalView and import your sequences (FASTA or Clustal).
3. Use the Calculate menu to align sequences (via Clustal or MAFFT).
4. Customize colors and layout from the Colour and Format menus.
5. Export figures or save project files for sharing and future edits.