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Figure Caption
Fig. 1 Bioinformatic analysis identifies four protein families comprised of only SH2 and SH3 domains. (A) Venn diagram of human SH2 domain-containing proteins (purple) and SH3 domain-containing proteins (green). (B) Removing proteins containing other functional domains leaves four adaptor protein families: CRK, NCK, GRB2, and SLA. Colors represent domains with greatest amino acid homology. Numbers correspond to amino acid residues
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Full text @ FEBS Lett.