25050
Although a significant level of homology was observed in PPO nucleotide and conceptually translated protein sequence , two cultivars , which displayed highest PPO specific activity , differed in the 38 amino acid stretch in the peptide region 301 - 338 .
 Chemical: nucleotide; 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: nucleotide; Chemical: amino acid