Kawashima S, Ogata H, Kanehisa M
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
Nucleic Acids Res. 1999 Jan 1;27(1):368-9. doi: 10.1093/nar/27.1.368.
AAindex is a database of numerical indices representing various physicochemical and biochemical properties of amino acids and pairs of amino acids. It consists of two sections: AAindex1 for the amino acid index of 20 numerical values and AAindex2 for the amino acid mutation matrix of 210 numerical values. Each entry of either AAindex1 or AAindex2 consists of the definition, the reference information, a list of related entries in terms of the correlation coefficient, and the actual data. The database may be accessed through the DBGET/LinkDB system at GenomeNet (http://www.genome.ad. jp/dbget/) or may be downloaded by anonymous FTP (ftp://ftp.genome. ad.jp/db/genomenet/aaindex/).
AAindex是一个数值索引数据库，代表氨基酸及氨基酸对的各种物理化学和生化特性。它由两部分组成：包含20个数值的氨基酸索引的AAindex1，以及包含210个数值的氨基酸突变矩阵的AAindex2。AAindex1或AAindex2的每个条目都包括定义、参考信息、根据相关系数列出的相关条目列表以及实际数据。该数据库可通过GenomeNet的DBGET/LinkDB系统（http://www.genome.ad.jp/dbget/）访问，也可通过匿名FTP（ftp://ftp.genome.ad.jp/db/genomenet/aaindex/）下载。
