抄録
There are typical three kinds of of Amino acid Sequence Databases, PDB, pdb-aa, nr-aa. Originally these databases have their own format. However, each format seems as records of data, is not effective for advanced research such as homological search for amino acid sequences of proteins, ORF prediction. Experimental construction of XML database have been under construction to these databases for the purpose of efficient usage in related area. This paper reports the characteristics and problems on these databases.
