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

. 2022 Mar 28:1–11. doi: 10.1080/1061186X.2022.2056187

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

© 2022 Informa UK Limited, trading as Taylor & Francis Group

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

PMC Copyright notice

Figure 2. — Sequential amino acid mutation in SARS-COVID-19 variants, i.e. Alpha, Beta, Gamma, Delta and Omicron strains. NTD: N terminal domain; RBD: receptor binding domain; FP: fusion protein; HR1: heptad repeat 1; CH: central helix; CD: connector domain; HR2: heptad repeat 2; TM: transmembrane; SP: spike protein; C or CT: cytoplasmic tail.