1611
Based on our sequence data , ORF2 from most isolates excluding G1 encode truncated 49 aa ( pORF2a ) because of an in - frame stop codon , although ORF2s from most G1 isolates encode 202 aa ( pORF2ab ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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