DDBJ Amino Acid Sequence Database
                                     (DAD)

                                  Release 1.5
                                 July 10, 1997

    This is a test release of DDBJ Amino Acid Sequence Database (DAD).  
This database was created by extracting all translated sequences from 
DDBJ entries.  The release 1.5 was made from DDBJ release 30 (July 1997).

1. Format of DAD Entries

    DAD is divided into 15 files according to the organisms from which 
amino acid sequences are derived.  The divisions are the same as those of 
DDBJ DNA Database, except that all EST data are put into one file of DAD.  
Please refer to the release note of DDBJ (filename: ddbjrel.txt).
    All the amino acid sequences are stored in a fasta-like format (ODEN 
format).  The first line of an entry has a character '>' followed by an 
accession number of the entry, its PID (protein ID), and the product name 
if it is known.  Accession number of DAD is comprised of DDBJ accession 
number and a consecutive integer that begins from 1.  These two numbers 
are combined by a hyphen (-).  For example, amino acid sequences extracted 
from DDBJ entry D12345 have accession numbers D12345-1, D12345-2, etc.
    An amino acid sequence begins from the next line of accession number.  
Up to sixty amino acids are written on one line.  Following the amino acid 
sequence, there is a double slash (//), which means the end of the entry.  
Below is an example of DAD entry.


>X65727-1 PID:g825605 glutathione S-transferase
MAEKPKLHYSNTRGRMESIRWLLAAAGVEFEEKFIKSAEDLDKLRNDGYLMFQQVPMVEI
DGMKLVQTRAILNYIASKYNLYGKDIKEKALIDMYIEGIADLGEMILLLPFTQPEEQDAK
LALIQEKTKNRYFPAFEKVLKSHGQDYLVGNKLSRADIHLVELLYYVEELDSSLISSFPL
LKALKTRISNLPTVKKFLQPGSPRKPPMDEKSLEESRKIFRF
//


2. Statistics of DAD

    The following are statistics of this release of DAD.


total number of entries          242,538
total length of sequences     74,829,275 aa
average length                       308.5 aa
name of longest sequence      X90568-1 PID:g1212992
length of longest sequence        26,926 aa (X90568-1)

file         entries         peptides
-------------------------------------
ddbjbct        61641         18384283
ddbjest          966            89694
ddbjhum        23988          7471563
ddbjinv        27150         10371035
ddbjmam         7041          1951623
ddbjpat         2048           571819
ddbjphg         2669           510928
ddbjpln        36675         14049339
ddbjpri         1942           372025
ddbjrod        22619          6721393
ddbjsts           11              869
ddbjsyn         1858           409789
ddbjuna          964           321921
ddbjvrl        43403         10997001
ddbjvrt         9563          2605993
-------------------------------------
total         242538         74829275