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This gene encodes a protein with duplicated cysteine -rich regions called LIM domains , which show homology to zinc-binding proteins and to iron-sulfur centers of ferredoxins .
 protein: ferredoxins; protein: iron-sulfur centers; protein: cysteine -rich regions; protein: zinc-binding proteins; protein: LIM domains
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: ferredoxins; protein: iron-sulfur centers; protein: cysteine -rich regions; protein: zinc-binding proteins; protein: LIM domains