An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A Cys4Zn cluster accumulates negative charges. A Cys residue, which may transiently dissociate from the zinc(II) center while still kept as the deprotonated form, can attack a methylphos-photriester to transfer the methyl group.