Here you wil find a simple way to get answers to your questions regarding
the x-ray structure of the Paracoccus oxidase.

This link allows you to send a message to So IWATA, the first author
on the paper describing the x-ray structure of the cytochrome oxidase from
Paracoccus denitrificans.

Your question and the reply will be logged and added to the
section on posing questions. So go ahead and Ask So Iwata