NAME

       efetch, esummary - retrieve results from an NCBI Entrez search

SYNOPSIS

       efetch  (edirect -fetch)  [-help]  [-format fmt]  [-mode mode]  [-style style]  [-db name]
       [-id ID]   [-seq_start N]   [-seq_stop N]   [-strand N]    [-chr_start N]    [-chr_stop N]
       [-complexity N] [-extend N] [-extrafeat N] [-raw] [-json]

       esummary   (edirect -summary)  [-help]  [-mode mode]  [-style style]  [-db name]  [-id ID]
       [-seq_start N]  [-seq_stop N]  [-strand N]  [-chr_start N]  [-chr_stop N]  [-complexity N]
       [-extend N] [-extrafeat N] [-raw] [-json]

DESCRIPTION

       efetch  and  esummary  retrieve results from either an edirect(1) pipeline or an immediate
       lookup (via -db and -id).  esummary is equivalent to efetch -format docsum.

       efetch is also the name of an AceDB tool for  consulting  local  sequence  databases.   To
       resolve  this  ambiguity, Debian systems with both AceDB tools and Entrez Direct installed
       arrange for AceDB's executable to have the name efetch.acedb(1) and for  efetch  to  be  a
       wrapper  script that examines its usage and proceeds to run whichever of edirect -fetch or
       efetch.acedb(1) looks like a better fit.

OPTIONS

   Format Selection
       -format fmt
              Format of record or report.  (See -help output for examples.)

       -mode mode
              text, xml, asn.1, or json.

       -style style
              withparts or conwithfeat.

   Direct Record Selection
       -db name
              Entrez database name for immediate lookups.

       -id ID Unique identifier or accession for immediate lookups.

   Sequence Range
       -seq_start N
              First sequence position to retrieve (1-based).

       -seq_stop N
              Last sequence position to retrieve (1-based).

       -strand N
              Strand of DNA to retrieve: 1 for plus, 2 for minus.

   Gene Range
       -chr_start N
              First sequence position to retrieve (0-based).

       -chr_stop N
              Last sequence position to retrieve (1-based).

   Sequence Flags
       -complexity N
              How much context to fetch:
              0      default
              1      Bioseq
              3      Nuc-prot set

       -extend N
              Extend sequence retrieval by N residues in both directions.

       -extrafeat N
              Bit flag specifying extra features.

   Miscellaneous
       -raw   Skip database-specific XML modifications.

       -json  Convert adjusted XML output to JSON.

       -help  Print usage  information,  complete  with  examples  of  notable  -db/-format/-mode
              combinations.

SEE ALSO

       eblast(1),  edirect(1),  efetch.acedb(1),  esample(1),  esearch(1),  exclude-uid-lists(1),
       intersect-uid-lists(1), rchive(1), transmute(1), xml2tbl(1), xtract(1).