biology-biopython

Installation
SKILL.md

Biopython Bioinformatics Best Practice

Sequence Manipulation

  1. Create sequences: from Bio.Seq import Seq; seq = Seq("ATGCGA")
  2. Complement: seq.complement(); Reverse complement: seq.reverse_complement()
  3. Transcription: seq.transcribe() (DNA to RNA)
  4. Translation: seq.translate() (DNA/RNA to protein)
  5. GC content: from Bio.SeqUtils import gc_fraction; gc_fraction(seq)
  6. Molecular weight: from Bio.SeqUtils import molecular_weight

File Parsing (SeqIO)

  1. Read FASTA: for rec in SeqIO.parse("file.fasta", "fasta"): ...
  2. Read GenBank: for rec in SeqIO.parse("file.gb", "genbank"): ...
  3. Read single record: rec = SeqIO.read("file.fasta", "fasta")
  4. Write sequences: SeqIO.write(records, "output.fasta", "fasta")
  5. Convert formats: SeqIO.convert("input.gb", "genbank", "output.fasta", "fasta")
  6. Index large files: idx = SeqIO.index("large.fasta", "fasta") for random access

BLAST Operations

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