Question: What is the accession number of the protein with the common name purple sea urchin?
SQL: SELECT "accession number" FROM "2-15229416-3" WHERE "common name" = 'purple sea urchin';

Question: What is the protein name of the protein with a sequence identity to human protein of 32%?
SQL: SELECT "protein name" FROM "2-15229416-3" WHERE "sequence identity to human protein" = '32%';

Question: What is the sequence length (aa) of the protein with the common name purple sea urchin and a divergence from human lineage less than 742.9?
SQL: SELECT SUM("sequence length (aa)") FROM "2-15229416-3" WHERE "common name" = 'purple sea urchin' AND "divergence from human lineage (MYA)" < 742.9;

Question: What is the accession number of the protein with a divergence from human lineage of 937.5?
SQL: SELECT "accession number" FROM "2-15229416-3" WHERE "divergence from human lineage (MYA)" = 937.5;