| Place-holder residue1 | Cysteine-histidine bound2 | Disulfide bridges3 |
---|---|---|---|
α-subclass protein |  |  |  |
Eubacteria tyrosinases | V | No | No |
Archaebacteria tyrosinases | V | No | No |
Plantae catechol oxidases | F/L | Yes | 2 bridges |
Chromalveolata tyrosinases | V | No | No |
Amoebozoan tyrosinases | V | No | No |
Fungal tyrosinases | V/L/I | Yes | No |
Cnidarian tyrosinases | V | No | No |
Molluscan hemocyanins | L | Yes | 2 bridges |
Molluscan tyrosinases | V/I | No | No |
Nematode tyrosinases | I | No | No |
Urochordate hemocyanins | L | Yes | 2 bridges |
β-subclass protein |  |  |  |
Amoebozoan tyrosinases | F | No | No |
Fungal tyrosinases | F | No | No |
Poriferan tyrosinase | F | No | 1 bridge |
Arthropod tyrosinases | F | No | 2 bridges |
Arthropod hemocyanins | F | No | 2 bridges |
Hemichordate hemocyanin | F | No | No |
Urochordate tyrosinases | F | No | No |
γ-subclass protein |  |  |  |
Poriferan tyrosinase | V | No | No |
Platyhelminth tyrosinases | V | No | No |
Annelid tyrosinases | V | No | No |
Hemichordate tyrosinases | V | No | No |
Cephalochordate tyrosinases | V | No | No |
Urochordate tyrosinases | V | No | No |
Vertebrate tyrosinases | V | No | No |