15721
Using RT - PCR , the GAD cDNA was sequenced which indicated 1787 bp long , containing a 1527 bp open reading frame ( ORF ) that encoded 509 amino - acid peptides with a calculated molecular weight of 57 . 74 kDa and a pI of 5 . 41 ( GenBank accession number : JX444699 ) .
 Chemical: amino - acid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: amino - acid