What is the length (AA) of the animal whose NCBI accession number is CAM15594.1?
CREATE TABLE "orthologs" (
  "common_name" text,
  "genus_species" text,
  "ncbi_accession_number" text,
  "length_aa" real,
  "pct_identity_to_c7orf38" real,
  "pct_similarity_to_c7orf38" real
);
SELECT MIN("length_aa") FROM "orthologs" WHERE "ncbi_accession_number"='CAM15594.1';