Table 3.

Ortholog Conservation in Model Invertebrate Animals

Data sets (no. of human proteins) Orthologs
C. elegans D. melanogaster
Positionally cloned genes  mutated in specific  human diseases (84)2513
Biosynthetic enzymes[i]  (30)2418
  purine biosynthesis[ii]    (6)54
  arginine and proline    biosynthesis (8)66
  sterol biosynthesis    (11)85
  folate biosynthesis/553
Leukocyte surface  antigens (151)155

[i] The list of proteins is available online athttp://www.sequana.com/publications/model_organisms.

[ii] Three human enzyme sequences in this category are unavailable, so the yeast orthologs were used.