>1GBQ_2|Chain B|SOS-1|Mus musculus (10090) XVPPPVPPRRRX >1GBQ_1|Chain A|GRB2|Mus musculus (10090) GSRRASVGSMEAIAKYDFKATADDELSFKRGDILKVLNEECDQNWYKAELNGKDGFIPKNYIEMKPHPEFIVTD