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.
Fluoride interactions in vitro. (A) Fluoride is the most similar in terms of size and charge to hydroxide, but has a much higher affinity for metals. (B) unit cells of crystallized hydroxyapatite (Ca5(PO4)3OH) and fluorapatite (Ca5(PO4)3F) [Minerology Database]. (C) Crystal structures of fluoride bound to urease and (D) phosphoserine phosphatase. Structures were generated on PyMOL using RCSB PDB (C) 4GOA and (D) 1L7N.
