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SKILL.md

protein-sequence-msa

Agent skill fromgoogle-deepmind/science-skills

Performs multiple sequence alignment of proteins with EBI Clustal Omega. Use when you need to align multiple sequences to assess similarity, domain conservation, or key residue conservation. Supports up to 4000 sequences and a maximum file size of 4 MB. Do not use to search for homologous proteins in a database (use MMseqs2, BLAST), align non-protein sequences (DNA, RNA), perform structural alignment (use Foldseek, PyMOL), or if you only have a single sequence.

How to install protein-sequence-msa

install protein-sequence-msa
# install the science-skills pack with the skills CLI
npx skills add google-deepmind/science-skills

# or add only this skill to Claude Code: copy the folder

skills/protein_sequence_msa/

# into

~/.claude/skills/protein_sequence_msa/ (all projects)

.claude/skills/protein_sequence_msa/ (one project)

skills/protein_sequence_msa/SKILL.md

Apache-2.0Full file
1## Prerequisites
2
31. **`uv`**: Read the `uv` skill and follow its Setup instructions to ensure
4 `uv` is installed and on PATH.
52. **User Notification**: If .licenses/protein_sequence_msa_LICENSE.txt does
6 not already exist in the workspace root directory then (1) prominently
7 notify the user to check the terms at
8 https://www.ebi.ac.uk/jdispatcher/msa/clustalo and
9 https://www.ebi.ac.uk/about/terms-of-use/, then (2) create the file
10 recording the notification text and timestamp.
113. **`.env` file**: Make sure the `.env` file exists in your home directory.
12 Create one if it does not exist.
134. **`USER_EMAIL`**: Required by the wrapper script for Clustal Omega job
14 tracking (recommended by the EBI). You **MUST** use the safe credentials
15 protocol in the `credentials` skill to check for and request this credential
16 if this skill looks relevant to the user's request.
17
18## Core Rules
19
20- **Use the Wrapper**: ALWAYS execute the alignment using
21 `scripts/msa_align.py` rather than writing your own curl or custom Python
22 requests. The script automatically enforces the required rate limit to
23 respect EBI's Terms of Use.
24- **Notification**: If this skill is used, ensure this is mentioned in the
25 output.
26* **Always state the method:** Every report must clearly state that the
27 alignment was performed using **EBI Clustal Omega**.
28- **No Hallucinations**: Do NOT invent alignments or conservation metrics.
29…

Excerpt shown under the repository's Apache-2.0 license.

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