bio-blast-searches
Run remote BLAST searches against NCBI databases using Biopython Bio.Blast. Use when identifying unknown sequences, finding homologs, or searching for sequence similarity against NCBI's nr/nt databases.
npx skills add majiayu000/claude-skill-registry --skill blast-searches --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# BLAST Searches Run BLAST searches against NCBI databases using Biopython's Bio.Blast module. ## Required Import ```python from Bio.Blast import NCBIWWW, NCBIXML from Bio import SeqIO ``` ## BLAST Programs | Program | Query | Database | Use Case | |---------|-------|----------|----------| | `blastn` | Nucleotide | Nucleotide | DNA/RNA sequence similarity | | `blastp` | Protein | Protein | Protein sequence similarity | | `blastx` | Nucleotide | Protein | Find protein hits for DNA query | | `tblastn` | Protein | Nucleotide | Find DNA encoding protein-like | | `tblastx` | Nucleotide | Nucleotide | Translated vs translated | ## Core Function ### NCBIWWW.qblast() Submit a BLAST query to NCBI servers. ```python from Bio.Blast import NCBIWWW # Simple BLASTN search result_handle = NCBIWWW.qblast('blastn', 'nt', sequence) ``` **Key Parameters:** | Parameter | Description | Example | |-----------|-------------|---------| | `program` | BLAST program | `'blastn'`, `'blastp'` | | `database` | Target database | `'nr'`, `'nt'`, `'refseq_rna'` | | `sequence` | Query sequence | String or SeqRecord | | `entrez_query` | Limit by Entrez query | `'Homo sapiens[organism]'` | | `hitlist_size` | Max hits
- Required Import
- BLAST Programs
- Core Function
- NCBIWWW.qblast()
- Common Databases
- Parsing Results
- NCBIXML Parser
- Alignment/HSP Attributes
- Code Patterns
- Basic BLASTN
- BLASTP with Organism Filter
- BLAST from FASTA File
- Save Results to File
- Extract Top Hits
What does the bio-blast-searches skill do?
Run remote BLAST searches against NCBI databases using Biopython Bio.Blast. Use when identifying unknown sequences, finding homologs, or searching for sequence similarity against NCBI's nr/nt databases.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill blast-searches --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.