Coronavirus Disease 2019 (COVID-19)

COVID-19 virus. The spikes, that adorn the virus surface, impart a corona like appearance (Fusion Animation).

LEFT: Overall view of the virus, showing the spikes in blue.

RIGHT: Cryo-EM structure of a spike, which consists of 3 polypeptide chains, colored green, brown and purple, from the McLellan Lab^[1] (PDB-ID 6vsb).

An animation shows how the virus interacts with its host, via its spikes, thus permitting the viral genome to enter the human (host) cell and begin infection (by Elara Systems).

Potential treatments for COVID-19

• Oxford Univ begins enrolling over 500 volunteers for a coronavirus vaccine trial also see more at The Jenner Inst.

• An international group of scientists are trying to combat COVID-19 via a massive crystal-based 3D fragment screen. They have determined the 3D structures of over 90 fragments, 66 of which are in the active site. All the experimental details and results are available online at the Diamond Light Source. They welcome contributions in many forms, see details PostEra.

• 31-Mar-2020 NY Times C.D.C. Weighs Advising Everyone to Wear a Mask.

• 27-Mar-2020 Science - Not wearing masks to protect against coronavirus is a big mistake, top Chinese scientist, Dr. George Gao, Director General of the Chinese CDC says, as reported in Science.

• 23-Mar-2020 NY Times - A USA, French UK study identified 69 drugs to test against the coronavirus^[2]. As reported in the New York Times "The researchers sought drugs that also latch onto the human proteins that the coronavirus seems to need to enter and replicate in human cells."

• 20-Mar-2020 - Analysis by Abby Olena in The Scientist on Remdesivir Works Against Coronaviruses in the Lab

• 20-Mar-2020 - Analysis by Chris Baraniuk in The Scientist on Chloroquine for COVID-19: Cutting Through the Hype

• A French study^[3] showed, despite its small sample size (20 patients treated), that hydroxychloroquine treatment is significantly associated with viral load reduction/disappearance in COVID-19 patients and its effect is reinforced by azithromycin.

Movies helping to explain COVID-19

Japan research experiments show how Coronavirus spreads through micro droplets. These tiny droplets containing the virus can stay in the air for extended periods. It's important to ventilate and frequently renew the air of a room, otherwise disease can spread by inhaling the tiny droplets in the air containing the virus, hours after the Covid-sick person left the room.


Speaking face-to-face is exchanging saliva, so stop speaking face-to-face and stay healthy by stoptheviruscovid.


Sequel to the movie just above: Stay healthy cover you face when speaking stoptheviruscovid.


Modeling an epidemic (6-Mar-2020) We're not ready for the next epidemic by 3blue1brown.


Fighting Coronavirus with Soap by PDB-101.


Background about the Coronavirus-COVID-19 and details of its 3D structure by biolution GmBH.


Outbreak of COVID-19 explained through 3D Medical Animation (Feb 11, 2020) by Sci Animations.


Bill Gates Ted Talk (3-Apr-2015) We're not ready for the next epidemic by Ted Talks.

Useful sites on COVID-19

• Computational predictions of 3D protein structures associated with COVID-19 based on the AI AlphaFold system. Coordinates of the 3D structures can be download here as a zip file.

• Up to date statistics on Coronavirus cases world-wide at worldometer

• A summary of key findings about COVID-19 can be found at CDC.

• Coronavirus Evolved Naturally, and ‘Is Not a Laboratory Construct,’ in a study in Nature Med by Anderson and colleagues ^[4].

• Scientists are endeavoring to find antivirals specific to the virus. Several drugs such as chloroquine, arbidol, remdesivir, and favipiravir are currently undergoing clinical studies to test their efficacy and safety in the treatment of COVID-19 in China, with some promising results summarized.^[5].

• Crowdfight COVID-19 - A scientific crowdsourcing initiative to put all available resources at the service of the fight against COVID-19

• A computer game, developed at the Inst for Protein Design (U Washington), uses crowdsourcing to try to find new lead compound that might become drugs to treat COVID-19.

3D structural studies on Coronavirus COVID-19

• 3-Apr-2020 Bad News Wrapped in Protein: Inside the Coronavirus Genome as reported in the NY Times Science Section. Detailed images of the 3D structures of the key proteins & RNA inside the Coronavirus and their functions.

• Public resource for the structures from beta-coronavirus with a focus on SARS-CoV and SARS-CoV-2

• A team of UK & Israeli scientists determined the 3D structures of over 90 fragments, 66 of which are in the active site. All the experimental details and results are available online at the Diamond Light Source'.

• A team of Chinese scientists determined, by Cryo-EM, the coronavirus spike receptor-binding domain complexed with its receptor ACE2 PDB-ID 6LZG. (To be published).

• A team of US and Chinese scientists determined the crystal structure of 2019-nCoV spike receptor-binding domain bound with ACE2 6M0J (To be published).

• A team of US scientists determined, by Cryo-EM, the structure of the SARS-CoV-2 spike glycoprotein (open & closed states) ^[6], PDB-ID 6VXX & 6VYB

• Crystal structure of SARS-CoV-2 receptor binding domain in complex with human antibody CR3022 6W41 (To be published).

• Crystal Structure of the methyltransferase-stimulatory factor complex of NSP16 and NSP10 from SARS CoV-2 6W61 (To be published).

• Crystal Structure of ADP ribose phosphatase of NSP3 from SARS CoV-2 in complex with AMP 6W6Y (To be published).

• Structure of NSP10 - NSP16 Complex from SARS-CoV-2 6W75 (To be published).

• Crystal structure of SARS-CoV-2 nucleocapsid protein N-terminal RNA binding domain 6M3M (To be published).

• Crystal structure of Nsp9 RNA binding protein of SARS CoV-2 6W4B (To be published).

• Crystal Structure of NSP16 - NSP10 Complex from SARS-CoV-2 6W4H (To be published).

• Cryo-EM structure of the 2019-nCoV RBD/ACE2-B0AT1 complex^[7] 6M17.

• Crystal structure of RNA binding domain of nucleocapsid phosphoprotein from SARS coronavirus 2 6VYO (To be published).

• Crystal structure of NSP15 Endoribonuclease from SARS CoV-2 in the Complex with a Citrate 6W01 (To be published).

• Crystal structure of ADP ribose phosphatase of NSP3 from SARS CoV-2 in the complex with ADP ribose 6W02 (To be published).

• Crystal structure of 2019-nCoV chimeric receptor-binding domain complexed with its receptor human ACE2 6VW1 (To be published).

• Crystal structure of NSP15 Endoribonuclease from SARS CoV-2 6VWW (To be published).

• Crystal Structure of ADP ribose phosphatase of NSP3 from SARS CoV-2 6VXS (To be published).

• Crystal structure of the 2019-nCoV HR2 Domain 6LVN (To be published).

• Crystal structure of post fusion core of 2019-nCoV S2 subunit 6LXT (To be published).

• Crystal structure of SARS-CoV-2 main protease provides a basis for design of improved α-ketoamide inhibitors, from the Hilgenfeld lab^[8], Apo Struture: PDB-ID 6Y2E, and complexes with inhibitors: PDB-ID 6Y2F and 6Y2G.

• 3D Structure of RNA-dependent RNA polymerase from COVID-19, a major antiviral drug target from the Rao lab in Beijing^[9].

• Crystal structure of the Mpro from COVID-19 and discovery of inhibitors in a study by scientists from Shanghai & Beijing ^[10], PDB-ID 2h2z.

• Crystal structure of Nsp15 endoribonuclease NendoU from SARS-CoV-2 in a study by scientists from USA^[11], PDB-ID 6w01.

• A study by Zhou & colleagues on the structural basis for the recognition of the SARS-CoV-2 (COVID-19) by full-length human ACE2 gives insights to the molecular basis for coronavirus recognition and infection^[12].

• The CoV spike (S) glycoprotein is a key target for vaccines, therapeutic antibodies, and diagnostics. A study by McLellan and colleagues in "Science" on the Cryo-EM structure of the COVID-19 spike protein. This structure should greatly aid in the rapid development and evaluation of medical countermeasures to address the ongoing public health crisis^[1], PDB-ID 6vsb.

References

1. ↑ ^{1.0 1.1} Wrapp D, Wang N, Corbett KS, Goldsmith JA, Hsieh CL, Abiona O, Graham BS, McLellan JS. Cryo-EM structure of the 2019-nCoV spike in the prefusion conformation. Science. 2020 Feb 19. pii: science.abb2507. doi: 10.1126/science.abb2507. PMID:32075877 doi:http://dx.doi.org/10.1126/science.abb2507
2. ↑ Gordon, et al. A SARS-CoV-2-Human Protein-Protein Interaction Map Reveals Drug Targets and Potential Drug-Repurposing: bioRxiv (online) 2020 http://doi.org/10.1101/2020.03.22.002386
3. ↑ Gautret, et al. Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open- label non-randomized clinical trial: Intl J Antimcrob Agents (in press) 2020 http://dx.doi.org/10.1016/j.ijantimicag.2020.105949
4. ↑ Andersen, et al. The proximal origin of SARS-CoV-2: Nature Med (in press) 2020 http://dx.doi.org/10.1038/s41591-020-0820-9]
5. ↑ Dong L, Hu S, Gao J. Discovering drugs to treat coronavirus disease 2019 (COVID-19). Drug Discov Ther. 2020;14(1):58-60. doi: 10.5582/ddt.2020.01012. PMID:32147628 doi:http://dx.doi.org/10.5582/ddt.2020.01012
6. ↑ Walls AC, Park YJ, Tortorici MA, Wall A, McGuire AT, Veesler D. Structure, Function, and Antigenicity of the SARS-CoV-2 Spike Glycoprotein. Cell. 2020 Mar 6. pii: S0092-8674(20)30262-2. doi: 10.1016/j.cell.2020.02.058. PMID:32155444 doi:http://dx.doi.org/10.1016/j.cell.2020.02.058
7. ↑ Yan R, Zhang Y, Li Y, Xia L, Guo Y, Zhou Q. Structural basis for the recognition of the SARS-CoV-2 by full-length human ACE2. Science. 2020 Mar 4. pii: science.abb2762. doi: 10.1126/science.abb2762. PMID:32132184 doi:http://dx.doi.org/10.1126/science.abb2762
8. ↑ Zhang L, Lin D, Sun X, Curth U, Drosten C, Sauerhering L, Becker S, Rox K, Hilgenfeld R. Crystal structure of SARS-CoV-2 main protease provides a basis for design of improved alpha-ketoamide inhibitors. Science. 2020 Mar 20. pii: science.abb3405. doi: 10.1126/science.abb3405. PMID:32198291 doi:http://dx.doi.org/10.1126/science.abb3405
9. ↑ Gao, et al. Structure of RNA-dependent RNA polymerase from 2019-nCoV, a major antiviral drug target: bioRxiv (online) 2020 https://doi.org/10.1101/2020.03.16.993386
10. ↑ Jin, et al. Structure of Mpro from COVID-19 virus and discovery of its inhibitors: bioRxiv (online) 2020 http://doi.org/10.1101/2020.02.26.964882
11. ↑ Kim, et al. Crystal structure of Nsp15 endoribonuclease NendoU from SARS-CoV-2: bioRxiv (online) 2020 http://doi.org/10.1101/2020.03.02.968388
12. ↑ Yan R, Zhang Y, Li Y, Xia L, Guo Y, Zhou Q. Structural basis for the recognition of the SARS-CoV-2 by full-length human ACE2. Science. 2020 Mar 4. pii: science.abb2762. doi: 10.1126/science.abb2762. PMID:32132184 doi:http://dx.doi.org/10.1126/science.abb2762