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TitleStructural insights into MERS and SARS coronavirus membrane proteins.
Journal, issue, pagesCommun Biol, Vol. 8, Issue 1, Page 1651, Year 2025
Publish dateNov 24, 2025
AuthorsMandeep Kaur Mann / Yanting Yin / Simone Marsili / Jiexiong Xie / Jordi Doijen / Robyn Miller / Madison Piassek / Nick van den Broeck / Christopher Kinyanjui Kariuki / Heidi L M de Gruyter / Anouk A Leijs / Eric J Snijder / Martijn J van Hemert / Ken Keustermans / Michiel Van Gool / Xiaodi Yu / Marnix van Loock / Anil Koul / Sujata Sharma / Ellen Van Damme / Pravien Abeywickrema /
PubMed AbstractThe membrane (M) protein of coronaviruses is essential for maintaining structural integrity during membrane virion budding and viral pathogenesis. Given its high conservation in lineages within the ...The membrane (M) protein of coronaviruses is essential for maintaining structural integrity during membrane virion budding and viral pathogenesis. Given its high conservation in lineages within the betacoronavirus genus, such as sarbecoviruses, the M protein presents as an attractive therapeutic target; however, developing broad-spectrum antivirals targeting coronaviruses such as MERS-CoV is challenging due to lower sequence conservation and limited structural information available beyond that of the SARS-CoV-2 M protein. In this study, we report 3-3.2 Å resolution structures of MERS-CoV M protein, engineered with a SARS-CoV-2-like antibody interface, representing the first human merbecovirus M protein structure, and SARS-CoV M protein structures, with and without a previously identified SARS-CoV-2 M protein inhibitor, JNJ-9676. We highlight the structural differences between the MERS-CoV, SARS-CoV and SARS-CoV-2 M proteins, and present insights into the conservation of the JNJ-9676 binding pocket as well as key differences that could be targeted to accelerate the design of specific MERS-CoV and broad-spectrum antivirals targeting coronavirus M proteins.
External linksCommun Biol / PubMed:41286109 / PubMed Central
MethodsEM (single particle)
Resolution3.07 - 3.23 Å
Structure data

49949

9nz3

EMDB-49949, PDB-9nz3:
SARS-CoV M protein dimer in complex with JNJ-9676 and FAb B
Method: EM (single particle) / Resolution: 3.07 Å

49950

9nz4

EMDB-49950, PDB-9nz4:
SARS-CoV M protein dimer in complex with FAb B
Method: EM (single particle) / Resolution: 3.23 Å

49951

9nz5

EMDB-49951, PDB-9nz5:
MERSmut-CoV M protein dimer in complex with FAb B
Method: EM (single particle) / Resolution: 3.15 Å

Chemicals

PDB-1ae8:
HUMAN ALPHA-THROMBIN INHIBITION BY EOC-D-PHE-PRO-AZALYS-ONP

ChemComp-HOH:
WATER

Source
  • homo sapiens (human)
  • sars-cov-2 pseudovirus
  • severe acute respiratory syndrome coronavirus
  • middle east respiratory syndrome-related coronavirus
KeywordsMEMBRANE PROTEIN/IMMUNE SYSTEM/INHIBITOR / M protein / SARS-CoV-2 / inhibitor bound complex / viral protein / MEMBRANE PROTEIN-IMMUNE SYSTEM-INHIBITOR complex

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