An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Palmer I, Wingfield PT.Palmer I, et al. Among authors: wingfield pt.Curr Protoc Protein Sci. 2012 Nov;Chapter 6:6.3.1-6.3.20. doi: 10.1002/0471140864.ps0603s70.Curr Protoc Protein Sci. 2012.PMID: 23151747Free PMC article.