11877
Based on this analysis , we propose that the interactions of Sos with the switch 1 and switch 2 regions of Ras have distinct functional consequences : the interaction with switch 2 mediates the anchoring of Ras to Sos , whereas the interaction with switch 1 leads to disruption of the nucleotide - binding site and GDP dissociation .
 GENE: Sos; GENE: Ras; GENE: Ras; GENE: Sos
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: Sos, Ras, Ras, Sos 
Answer:
 GENE: Sos; GENE: Ras; GENE: Ras; GENE: Sos