3TO2

Structure of HLA-A*0201 complexed with peptide Md3-C9 derived from a clustering region of restricted cytotoxic T lymphocyte epitope from SARS-CoV M protein

Domain Annotation: CATH CATH Database (version 4.2.0) Homepage

Chain	Domain	Class	Architecture	Topology	Homology
A	3.30.500.10	Alpha Beta	2-Layer Sandwich	Murine Class I Major Histocompatibility Complex, H2-DB	Chain A, domain 1
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Identifier	Description	Comments	Source
C	PF01635	Coronavirus M matrix/glycoprotein (CoV_M)	Coronavirus M matrix/glycoprotein	-	Family
A	PF00129	Class I Histocompatibility antigen, domains alpha 1 and 2 (MHC_I)	Class I Histocompatibility antigen, domains alpha 1 and 2	-	Domain
A	PF06623	MHC_I C-terminus (MHC_I_C)	MHC_I C-terminus	-	Family
A	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain
B	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain

Gene Product Annotation Gene Product Annotation

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Md3-C9 peptide derived from Membrane glycoprotein	binding protein binding identical protein binding structural molecule activity structural constituent of virion	response to external stimulus response to biotic stimulus viral process modulation by virus of host process mitigation of host defenses by virus mitigation of host defenses by symbiont mitigation of host immune response by virus modulation of process of other organism response to external biotic stimulus modulation by symbiont of host process biological process involved in symbiotic interaction biological process involved in interspecies interaction between organisms regulation of defense response to virus by virus response to stimulus biological process involved in interaction with host response to other organism modulation of process of other organism involved in symbiotic interaction response to defenses of other organism response to host defenses response to host	host cellular component host cell cytoplasm host cell part host cell membrane host cell endomembrane system host intracellular part host cell cytoplasm part host intracellular region host cell host cell Golgi apparatus host cell Golgi membrane cellular anatomical entity membrane integral component of membrane intrinsic component of membrane virion viral envelope viral membrane virion part virion membrane
A	MHC class I antigen			membrane integral component of membrane intrinsic component of membrane cellular anatomical entity plasma membrane cell periphery
B	Beta-2-microglobulin	binding protein binding identical protein binding protein homodimerization activity protein dimerization activity	cellular process response to inorganic substance response to metal ion response to iron ion response to chemical response to stimulus cellular response to stimulus cellular response to chemical stimulus cellular response to inorganic substance cellular response to metal ion cellular response to iron ion response to iron(III) ion cellular response to iron(III) ion response to nicotine cellular response to nicotine homeostatic process chemical homeostasis ion homeostasis metal ion homeostasis iron ion homeostasis transition metal ion homeostasis cation homeostasis biological regulation regulation of biological quality inorganic ion homeostasis cell population proliferation negative regulation of cell population proliferation regulation of cell population proliferation negative regulation of biological process negative regulation of cellular process epithelial cell proliferation regulation of epithelial cell proliferation negative regulation of epithelial cell proliferation regulation of biological process regulation of cellular process negative regulation of protein binding regulation of protein binding negative regulation of molecular function regulation of binding negative regulation of binding regulation of molecular function regulation of receptor binding negative regulation of receptor binding positive regulation of molecular function positive regulation of binding regulation of ferrous iron binding positive regulation of ferrous iron binding positive regulation of protein binding positive regulation of receptor binding regulation of transferrin receptor binding positive regulation of transferrin receptor binding cellular component organization cellular component assembly protein-containing complex subunit organization cellular component biogenesis protein complex oligomerization protein homooligomerization protein tetramerization protein homotetramerization protein-containing complex assembly cellular component organization or biogenesis viral process biological process involved in symbiotic interaction biological process involved in interspecies interaction between organisms regulation of defense response to virus by virus response to cadmium ion response to drug	intracellular anatomical structure cytoplasm cytosol cellular anatomical entity endosome early endosome endomembrane system cytoplasmic vesicle endosome lumen early endosome lumen membrane-enclosed lumen vesicle organelle membrane-bounded organelle intracellular organelle organelle lumen intracellular organelle lumen intracellular vesicle endosome membrane membrane organelle membrane early endosome membrane bounding membrane of organelle endoplasmic reticulum endoplasmic reticulum lumen intracellular membrane-bounded organelle vesicle membrane ER to Golgi transport vesicle membrane transport vesicle COPII-coated ER to Golgi transport vesicle coated vesicle transport vesicle membrane cytoplasmic vesicle membrane coated vesicle membrane plasma membrane external side of plasma membrane cell surface cell periphery side of membrane extracellular region extracellular space extracellular organelle extracellular exosome extracellular vesicle focal adhesion cell junction cell-substrate junction anchoring junction Golgi apparatus protein-containing complex receptor complex membrane protein complex plasma membrane protein complex plasma membrane signaling receptor complex HFE-transferrin receptor complex endoplasmic reticulum membrane integral component of membrane integral component of endoplasmic reticulum membrane intrinsic component of membrane intrinsic component of endoplasmic reticulum membrane intrinsic component of organelle membrane integral component of organelle membrane organelle subcompartment nuclear outer membrane-endoplasmic reticulum membrane network MHC class I peptide loading complex endoplasmic reticulum subcompartment endoplasmic reticulum protein-containing complex MHC protein complex MHC class I protein complex endocytic vesicle endocytic vesicle membrane phagocytic vesicle membrane phagocytic vesicle recycling endosome recycling endosome membrane secretory granule vesicle lumen secretory granule lumen specific granule lumen specific granule cytoplasmic vesicle lumen secretory vesicle tertiary granule tertiary granule lumen

RCSB PDB is funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.