DDBJ Amino Acid Sequence Database
                                     (DAD)

                                  Release 1.4
                                April 21, 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 1.4 was made from DDBJ release 29 (April 1997).

1. Format of DAD Entries

    DAD is divided into 16 files according to the organisms from which 
amino acid sequences are derived.  The divisions are the same as those of 
DDBJ DNA Database.  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          229,541
total length of sequences     70,817,559 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        57745         17222415
ddbjest          963            86525
ddbjhtg           84            30806
ddbjhum        22912          7000754
ddbjinv        25633          9775706
ddbjmam         6763          1872938
ddbjpat         1986           548223
ddbjphg         2572           490410
ddbjpln        34851         13366927
ddbjpri         1833           345364
ddbjrod        21804          6412942
ddbjsts           11              869
ddbjsyn         1775           386587
ddbjuna          954           316490
ddbjvrl        40683         10511018
ddbjvrt         8972          2449585
-------------------------------------
total         229541         70817559