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Module 2 of RifA lacks a beta - ketoacyl : acyl carrier protein reductase ( KR ) domain and the one in module 3 has an apparently inactive NADPH binding motif , similar to one found in the Er PKS , while the other eight KR domains of the Rf PKS should be functional .
 GENE: RifA; GENE: beta - ketoacyl : acyl carrier protein reductase; GENE: KR; GENE: NADPH binding motif; GENE: Er PKS; GENE: KR domains; GENE: Rf PKS
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: RifA; GENE: beta - ketoacyl : acyl carrier protein reductase; GENE: KR; GENE: NADPH binding motif; GENE: Er PKS; GENE: KR domains; GENE: Rf PKS