COVID-19 AlphaFold2 Models

Revision as of 18:21, 4 February 2022 by Joel L. Sussman (talk | contribs)
Theoretical Model: The protein structure described on this page was determined theoretically, and hence should be interpreted with caution.
Model Confidence:

  Very high (pLDDT > 90)

  Confident (90 > pLDDT > 70)

  Low (70 > pLDDT > 50)

  Very low (pLDDT < 50)

AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Some regions below 50 pLDDT may be unstructured in isolation.

As an example, to the right, is an AlphaFold2 3D model of the SARS CoV-2 Protein N (UniProt ID: QHD43423) color coded by the pLDDT scores. It corresponds to the highest ranked model in terms of the pLDDT confidence scores, i.e., model 5[1].

At present, there a still a number of proteins from the SARS CoV-2 virus whose 3D structures have not yet been experimentally determined. AlphaFold2 was used to predict these structures using the MIT ColabFold server[1]. For each prediction, five 3D models were predicted, ranked from 1 to 5 (with 1 being the best). Views of these AlphaFold2 predictions can be seen on the Proteopedia pages:

SARS-CoV-2 protein M - Component of the viral envelope that plays a central role in virus morphogenesis and assembly via its interactions with other viral proteins[2][3].

SARS-CoV-2 protein N - The primary function of the Nucleocapsid protein (N-protein) is to package the viral genome into a helical ribonucleoprotein (RNP) complex[4][3].

SARS-CoV-2 protein ORF10 - It is currently unclear whether this region translates into a functional protein.[4][3].

SARS-CoV-2 Protein N

Drag the structure with the mouse to rotate

ReferencesReferences

  1. 1.0 1.1 MIT ColabFold https://colab.research.google.com/github/sokrypton/ColabFold/blob/main/beta/AlphaFold2_advanced.ipynb
  2. Modeling of the SARS-COV-2 Genome https://zhanglab.ccmb.med.umich.edu/COVID-19/
  3. 3.0 3.1 3.2 Zhang C, Zheng W, Huang X, Bell EW, Zhou X, Zhang Y. Protein Structure and Sequence Reanalysis of 2019-nCoV Genome Refutes Snakes as Its Intermediate Host and the Unique Similarity between Its Spike Protein Insertions and HIV-1. J Proteome Res. 2020 Apr 3;19(4):1351-1360. doi: 10.1021/acs.jproteome.0c00129., Epub 2020 Mar 24. PMID:32200634 doi:http://dx.doi.org/10.1021/acs.jproteome.0c00129
  4. 4.0 4.1 Cite error: Invalid <ref> tag; no text was provided for refs named Zhang_Lab

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

Joel L. Sussman