User:Binky/temp
Respiratory Proteins
| name | metal | color when oxygenated | color when reduced | species |
| hemoglobin | iron | red | blue | mammals, birds |
| hemocyanin | copper | colorless | blue | crustaceans, spiders, some molluscs |
| hemerythrin | iron | violet-pink | lemon yellow | worms (sipunculids, priapulids, brachiopods, and Magelona |
| chlorocruorin | red | blue | some marine worms (spirograpids) | |
| cytoglobin | ||||
| erythrocruorin |