GET efetch.fcgi

Web environment from previous esearch.

NCBI API key for increased rate limits.

Complexity level: 0 (default), 1 (biopolymer), 2 (biopolymer with parts), 3 (nucleotide with parts), 4 (protein with parts).

Constraints: {'enum': [0, 1, 2, 3, 4]}

Database. Use 'nuccore' for nucleotide.

Constraints: {'enum': ['nuccore']}

Comma-separated list of UIDs or accession numbers to fetch.

Query key from previous esearch.

Maximum records to return (max 10,000).

Constraints: {'minimum': 1, 'maximum': 10000}

Return mode. Use 'text' for GenBank or FASTA formats.

Constraints: {'enum': ['xml', 'text', 'asn.1']}

Index of first record to return.

Return type: 'gb' (GenBank), 'fasta', 'ft' (feature table), etc.

Constraints: {'enum': ['gb', 'gbwithparts', 'fasta', 'fasta_cds_aa', 'fasta_cds_na', 'ft', 'gb est', 'acc']}

Start position in sequence (1-based).

Stop position in sequence (1-based).

Strand to retrieve (1=plus, 2=minus).

Constraints: {'enum': [1, 2]}