Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

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.

View full-text article in PMC

. 2016 Nov 3;6:35927. doi: 10.1038/srep35927

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2016, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

PMC Copyright notice

(a) ENC–GC3 plot. ENC represents the effective number of codons, and GC3 is the GC content of synonymous codons at the third position. The solid line represents the expected curve when codon usage bias is only affected by mutation pressure. (b) Frequency distribution of effective number of codons (ENC). (c) PR2-bias plot [A3/(A3 + U3) against G3/(G3 + C3)] of G. biloba four-fold degenerate codons. (d) Neutrality plot analysis of GC12 and GC3 contents. GC12 in this regression plot represents the average value of GC contents at the first and second positions in each codon, and GC3 is the GC content at the third position (r = 0.061, p < 0.01).