6767
All three modules are composed of two anti-parallel β-sheets resulting in a Beta-sandwich ; however , type I and type II are stabilized by intra-chain disulfide bonds , while type III modules do not contain any disulfide bonds .
 location: Beta-sandwich
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Beta-sandwich