4EN2

HIV-1 Nef in complex with MHC-I cytoplasmic domain and Mu1 adaptin subunit of AP1 adaptor (second domain)

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A [auth M]	d4en2m_	All beta proteins	Common fold of diphtheria toxin/transcription factors/cytochrome f	Second domain of Mu2 adaptin subunit (ap50) of ap2 adaptor	automated matches	automated matches	mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
D [auth A]	d4en2a_	All beta proteins	Common fold of diphtheria toxin/transcription factors/cytochrome f	Second domain of Mu2 adaptin subunit (ap50) of ap2 adaptor	automated matches	automated matches	mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth M]	SCOP2 Family	second domain of mu2 adaptin subunit (ap50) of ap2 adaptor	8083651	4002088	SCOP2 (2022-06-29)
A [auth M]	SCOP2 Superfamily	mu adaptin domain-like	8083652	3000810	SCOP2 (2022-06-29)
D [auth A]	SCOP2B Superfamily	mu adaptin domain-like	8083652	3000810	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth M]	PF00928	e4en2M3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: PF00928	ECOD (1.6)
D [auth A]	PF00928	e4en2A3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: PF00928	ECOD (1.6)
B	PF00469	e4en2B1	A: a+b three layers	X: Regulatory factor Nef (From Topology)	H: Regulatory factor Nef (From Topology)	T: Regulatory factor Nef	F: PF00469	ECOD (1.6)
C	PF00469	e4en2C1	A: a+b three layers	X: Regulatory factor Nef (From Topology)	H: Regulatory factor Nef (From Topology)	T: Regulatory factor Nef	F: PF00469	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth M]	2.60.40.1170	Mainly Beta	Sandwich	Immunoglobulin-like	Mu homology domain, subdomain B	CATH (4.3.0)
D [auth A]	2.60.40.1170	Mainly Beta	Sandwich	Immunoglobulin-like	Mu homology domain, subdomain B	CATH (4.3.0)
B	3.30.62.10	Alpha Beta	2-Layer Sandwich	Nef Regulatory Factor	Nef Regulatory Factor	CATH (4.3.0)
C	3.30.62.10	Alpha Beta	2-Layer Sandwich	Nef Regulatory Factor	Nef Regulatory Factor	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth M], D [auth A]	PF00928	Adaptor complexes medium subunit family (Adap_comp_sub)	Adaptor complexes medium subunit family	-	Family
B, C	PF00469	Negative factor, (F-Protein) or Nef (F-protein)	Negative factor, (F-Protein) or Nef	-	Family
E [auth D], F [auth E]	PF06623	MHC_I C-terminus (MHC_I_C)	MHC_I C-terminus	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth M], D [auth A]	AP-1 complex subunit mu-1	cargo adaptor activity clathrin adaptor activity protein-macromolecule adaptor activity molecular adaptor activity	protein localization cellular localization establishment of protein localization nitrogen compound transport transport organic substance transport intracellular transport establishment of localization localization protein transport establishment of localization in cell cellular macromolecule localization macromolecule localization cellular process protein localization cellular localization establishment of protein localization nitrogen compound transport transport organic substance transport intracellular transport establishment of localization localization protein transport establishment of localization in cell cellular macromolecule localization macromolecule localization cellular process intracellular protein transport vesicle organization cellular component organization melanosome organization organelle organization pigmentation cellular pigmentation cellular component organization or biogenesis pigment granule organization organelle assembly cellular component biogenesis cellular component assembly melanosome assembly vesicle-mediated transport platelet dense granule organization secretory granule organization endomembrane system organization cellular response to stimulus pigment cell differentiation response to stimulus cellular developmental process developmental pigmentation endosome to pigment granule transport cell differentiation cellular pigment accumulation developmental process endosome to melanosome transport pigment accumulation response to external stimulus developmental maturation pigment granule maturation	membrane-bounded organelle intracellular anatomical structure early endosome endosome intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle vacuolar membrane membrane-bounded organelle intracellular anatomical structure early endosome endosome intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle vacuolar membrane membrane lytic vacuole vacuole lytic vacuole membrane bounding membrane of organelle lysosomal membrane organelle membrane lysosome Golgi apparatus subcompartment Golgi apparatus organelle subcompartment trans-Golgi network clathrin-coated vesicle coated vesicle cytosol trans-Golgi network membrane protein-containing complex vesicle coat membrane protein complex transport vesicle membrane clathrin coat of trans-Golgi network vesicle membrane coat trans-Golgi network transport vesicle membrane trans-Golgi network transport vesicle AP-type membrane coat adaptor complex AP-1 adaptor complex vesicle membrane clathrin vesicle coat Golgi-associated vesicle clathrin-coated vesicle membrane transport vesicle coated membrane clathrin coat coated vesicle membrane cytoplasmic vesicle membrane Golgi-associated vesicle membrane clathrin adaptor complex
B, C	Protein Nef	protein binding binding signaling receptor binding thioesterase binding enzyme binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding organic cyclic compound binding protein binding binding signaling receptor binding thioesterase binding enzyme binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding organic cyclic compound binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding SH3 domain binding protein domain specific binding CD4 receptor binding kinase binding protein kinase binding MHC class I protein binding MHC protein binding ATPase binding	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein trimerization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis viral process viral life cycle symbiont-mediated perturbation of host defense response response to host defenses biological process involved in interspecies interaction between organisms cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein trimerization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis viral process viral life cycle symbiont-mediated perturbation of host defense response response to host defenses biological process involved in interspecies interaction between organisms response to stimulus response to other organism symbiont-mediated perturbation of host immune response response to defenses of other organism response to external stimulus response to biotic stimulus biological process involved in interaction with host biological process involved in symbiotic interaction symbiont-mediated suppression of host immune response modulation by symbiont of host process response to host immune response symbiont-mediated suppression of host antigen processing and presentation of peptide antigen via MHC class I symbiont-mediated suppression of host antigen processing and presentation response to host response to external biotic stimulus modulation of process of another organism symbiont-mediated suppression of host adaptive immune response symbiont-mediated suppression of host T-cell mediated immune response regulation of CD4 production regulation of cellular process cellular biosynthetic process organonitrogen compound biosynthetic process negative regulation of biological process carbohydrate derivative metabolic process negative regulation of cellular metabolic process regulation of primary metabolic process organic substance metabolic process organic substance biosynthetic process negative regulation of cellular process protein metabolic process regulation of glycoprotein biosynthetic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process carbohydrate derivative biosynthetic process regulation of biosynthetic process negative regulation of glycoprotein biosynthetic process negative regulation of glycoprotein metabolic process regulation of biological process organonitrogen compound metabolic process negative regulation of CD4 production cellular metabolic process regulation of protein metabolic process negative regulation of metabolic process biological regulation glycoprotein biosynthetic process primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process glycoprotein metabolic process macromolecule biosynthetic process negative regulation of cellular biosynthetic process regulation of glycoprotein metabolic process regulation of cellular biosynthetic process biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process CD4 biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of metabolic process cellular response to stimulus regulation of signaling signaling regulation of signal transduction intracellular signal transduction cell communication regulation of intracellular signal transduction regulation of response to stimulus calcium-mediated signaling intracellular signaling cassette regulation of calcium-mediated signaling regulation of cell communication signal transduction modulation by virus of host process virus-mediated perturbation of host defense response perturbation by virus of host immune response modulation by virus of host cellular process suppression by virus of host autophagy modulation by virus of host autophagy symbiont-mediated suppression of host antigen processing and presentation of peptide antigen via MHC class II	membrane cellular anatomical entity host cell plasma membrane host cellular component host cell part host cell membrane extracellular region virion component host intracellular part host cell Golgi membrane host cell Golgi apparatus host cell cytoplasm part host cell cytoplasm host cell endomembrane system membrane cellular anatomical entity host cell plasma membrane host cellular component host cell part host cell membrane extracellular region virion component host intracellular part host cell Golgi membrane host cell Golgi apparatus host cell cytoplasm part host cell cytoplasm host cell endomembrane system host intracellular region
E [auth D], F [auth E]	MHC-I	binding antigen binding peptide antigen binding peptide binding TAP complex binding protein-containing complex binding beta-2-microglobulin binding protein binding signaling receptor binding T cell receptor binding CD8 receptor binding RNA binding organic cyclic compound binding nucleic acid binding binding antigen binding peptide antigen binding peptide binding TAP complex binding protein-containing complex binding beta-2-microglobulin binding protein binding signaling receptor binding T cell receptor binding CD8 receptor binding RNA binding organic cyclic compound binding nucleic acid binding TAP binding	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity T cell mediated cytotoxicity T cell mediated immunity response to tumor cell T cell mediated cytotoxicity directed against tumor cell target response to stimulus immune response immune response to tumor cell leukocyte mediated cytotoxicity adaptive immune response response to biotic stimulus immune effector process T cell mediated immune response to tumor cell immune system process adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity T cell mediated cytotoxicity T cell mediated immunity response to tumor cell T cell mediated cytotoxicity directed against tumor cell target response to stimulus immune response immune response to tumor cell leukocyte mediated cytotoxicity adaptive immune response response to biotic stimulus immune effector process T cell mediated immune response to tumor cell immune system process leukocyte mediated immunity cellular process cell killing multicellular organismal process regulation of cellular process positive regulation of cell population proliferation CD8-positive, alpha-beta T cell activation regulation of alpha-beta T cell activation regulation of leukocyte activation CD8-positive, alpha-beta T cell proliferation positive regulation of alpha-beta T cell proliferation regulation of cell activation positive regulation of CD8-positive, alpha-beta T cell activation positive regulation of cell activation T cell activation alpha-beta T cell proliferation lymphocyte proliferation positive regulation of leukocyte activation positive regulation of CD8-positive, alpha-beta T cell proliferation alpha-beta T cell activation regulation of immune system process positive regulation of immune system process regulation of leukocyte proliferation regulation of biological process positive regulation of T cell activation cell population proliferation regulation of CD8-positive, alpha-beta T cell proliferation positive regulation of lymphocyte proliferation positive regulation of T cell proliferation positive regulation of alpha-beta T cell activation mononuclear cell proliferation regulation of cell population proliferation regulation of leukocyte cell-cell adhesion positive regulation of leukocyte proliferation positive regulation of multicellular organismal process positive regulation of biological process positive regulation of leukocyte cell-cell adhesion lymphocyte activation leukocyte cell-cell adhesion leukocyte proliferation leukocyte activation positive regulation of cell-cell adhesion positive regulation of lymphocyte activation regulation of alpha-beta T cell proliferation cell adhesion cell-cell adhesion positive regulation of mononuclear cell proliferation regulation of multicellular organismal process regulation of cell-cell adhesion positive regulation of cellular process T cell proliferation regulation of lymphocyte proliferation positive regulation of cell adhesion regulation of cell adhesion cell activation biological regulation regulation of T cell activation regulation of T cell proliferation regulation of mononuclear cell proliferation regulation of CD8-positive, alpha-beta T cell activation regulation of lymphocyte activation regulation of immune effector process positive regulation of leukocyte mediated immunity T cell cytokine production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of immune response cytokine production organic substance biosynthetic process positive regulation of macromolecule metabolic process positive regulation of adaptive immune response positive regulation of T cell cytokine production regulation of T cell mediated immunity regulation of cytokine production involved in immune response regulation of adaptive immune response cellular metabolic process regulation of cellular metabolic process regulation of gene expression regulation of leukocyte mediated immunity biosynthetic process regulation of response to stimulus positive regulation of production of molecular mediator of immune response regulation of immune response metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of production of molecular mediator of immune response positive regulation of cytokine production regulation of metabolic process positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of lymphocyte mediated immunity cellular biosynthetic process positive regulation of cellular metabolic process positive regulation of response to stimulus regulation of T cell cytokine production organic substance metabolic process regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of biosynthetic process regulation of cytokine production positive regulation of immune effector process cytokine production involved in immune response production of molecular mediator of immune response regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of lymphocyte mediated immunity positive regulation of gene expression positive regulation of T cell mediated immunity positive regulation of cytokine production involved in immune response positive regulation of cellular biosynthetic process humoral immune response biological process involved in interspecies interaction between organisms response to other organism defense response antibacterial humoral response defense response to symbiont response to external stimulus antimicrobial humoral response defense response to bacterium defense response to other organism response to stress response to bacterium response to external biotic stimulus innate immune response detection of external biotic stimulus detection of biotic stimulus detection of bacterium detection of stimulus detection of other organism antigen processing and presentation antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of peptide antigen via MHC class I antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independent antigen processing and presentation of peptide antigen antigen processing and presentation of endogenous antigen antigen processing and presentation of endogenous peptide antigen via MHC class I negative regulation of biological process negative regulation of lymphocyte mediated immunity negative regulation of natural killer cell mediated immunity natural killer cell mediated immunity regulation of natural killer cell mediated immunity regulation of innate immune response negative regulation of immune response negative regulation of immune effector process negative regulation of response to external stimulus negative regulation of defense response natural killer cell mediated cytotoxicity regulation of cell killing negative regulation of natural killer cell mediated cytotoxicity regulation of defense response regulation of response to biotic stimulus regulation of natural killer cell mediated cytotoxicity regulation of response to external stimulus negative regulation of response to biotic stimulus protection from natural killer cell mediated cytotoxicity regulation of response to stress negative regulation of leukocyte mediated cytotoxicity negative regulation of cellular process negative regulation of cell killing negative regulation of response to stimulus regulation of leukocyte mediated cytotoxicity negative regulation of immune system process negative regulation of leukocyte mediated immunity negative regulation of innate immune response positive regulation of memory T cell activation regulation of memory T cell activation memory T cell activation peptide antigen assembly with MHC class I protein complex protein-containing complex organization peptide antigen assembly with MHC protein complex MHC class I protein complex assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly MHC protein complex assembly cellular component organization or biogenesis antigen processing and presentation of exogenous peptide antigen via MHC class I antigen processing and presentation of exogenous peptide antigen antigen processing and presentation of exogenous antigen positive regulation of leukocyte mediated cytotoxicity positive regulation of T cell mediated cytotoxicity regulation of T cell mediated cytotoxicity positive regulation of cell killing cellular response to stimulus immune response-regulating cell surface receptor signaling pathway signaling cell communication immune response-activating signaling pathway immune response-regulating signaling pathway signal transduction cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway T cell receptor signaling pathway antigen receptor-mediated signaling pathway activation of immune response antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent antigen processing and presentation of endogenous peptide antigen via MHC class Ib antigen processing and presentation of peptide antigen via MHC class Ib antigen processing and presentation via MHC class Ib regulation of type II interferon production type II interferon production positive regulation of type II interferon production defense response to Gram-positive bacterium	cell periphery cell surface membrane plasma membrane cellular anatomical entity external side of plasma membrane side of membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cell periphery cell surface membrane plasma membrane cellular anatomical entity external side of plasma membrane side of membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle MHC class I protein complex MHC protein complex protein-containing complex plasma membrane protein complex membrane protein complex intracellular organelle intracellular anatomical structure endoplasmic reticulum exit site endoplasmic reticulum cytoplasm intracellular membrane-bounded organelle endomembrane system intracellular vesicle phagocytic vesicle phagocytic vesicle membrane cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane endocytic vesicle membrane organelle membrane endocytic vesicle Golgi apparatus Golgi membrane MHC class I peptide loading complex organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane Golgi apparatus subcompartment Golgi cisterna Golgi stack Golgi medial cisterna lumenal side of endoplasmic reticulum membrane lumenal side of membrane endosome membrane endosome recycling endosome recycling endosome membrane early endosome early endosome membrane transport vesicle transport vesicle membrane coated vesicle membrane COPII-coated ER to Golgi transport vesicle ER to Golgi transport vesicle membrane coated vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth M], D [auth A]	IPR011012	Longin-like domain superfamily	Homologous Superfamily
A [auth M], D [auth A]	IPR022775	AP complex, mu/sigma subunit	Domain
A [auth M], D [auth A]	IPR036168	AP-2 complex subunit mu, C-terminal superfamily	Homologous Superfamily
A [auth M], D [auth A]	IPR028565	Mu homology domain	Domain
A [auth M], D [auth A]	IPR018240	Clathrin adaptor, mu subunit, conserved site	Conserved Site
A [auth M], D [auth A]	IPR001392	Clathrin adaptor, mu subunit	Family
B, C	IPR001558	HIV negative factor Nef	Family
B, C	IPR027481	HIV-1 Nef protein, core domain superfamily	Homologous Superfamily
B, C	IPR027480	HIV-1 Nef protein, anchor domain superfamily	Homologous Superfamily
E [auth D], F [auth E]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
E [auth D], F [auth E]	IPR010579	MHC class I, alpha chain, C-terminal	Domain
E [auth D], F [auth E]	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
E [auth D], F [auth E]	IPR001039	MHC class I alpha chain, alpha1 alpha2 domains	Domain
E [auth D], F [auth E]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
E [auth D], F [auth E]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
E [auth D], F [auth E]	IPR007110	Immunoglobulin-like domain	Domain
E [auth D], F [auth E]	IPR003597	Immunoglobulin C1-set	Domain
E [auth D], F [auth E]	IPR011161	MHC class I-like antigen recognition-like	Domain
E [auth D], F [auth E]	IPR037055	MHC class I-like antigen recognition-like superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E [auth D], F [auth E]	Pharos: P04439	malignant glioma parapsoriasis plasma cell myeloma Stevens-Johnson syndrome thrombocytopenia ankylosing spondylitis mixed glioma juvenile idiopathic arthritis birdshot chorioretinopathy Drug-Induced Acute Liver Injury pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia paranoid schizophrenia glioma pilocytic astrocytoma malignant glioma parapsoriasis plasma cell myeloma Stevens-Johnson syndrome thrombocytopenia ankylosing spondylitis mixed glioma juvenile idiopathic arthritis birdshot chorioretinopathy Drug-Induced Acute Liver Injury pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia paranoid schizophrenia glioma pilocytic astrocytoma allergic rhinitis prostate carcinoma schizophrenia herpes zoster autism juvenile dermatomyositis toxic epidermal necrolysis autoimmune disease lung adenocarcinoma breast cancer malignant ependymoma cutaneous lupus erythematosus nasopharyngeal disease pancreatic intraductal papillary-mucinous carcinoma Duchenne muscular dystrophy Graves disease alopecia psoriatic arthritis squamous cell lung carcinoma astrocytic tumor IgA glomerulonephritis subependymal giant cell astrocytoma autism spectrum disorder bipolar disorder lung cancer cancer dermatomyositis ovarian cancer drug-induced liver injury pancreatic intraductal papillary-mucinous neoplasm endogenous depression glioblastoma head and neck squamous cell carcinoma plasma cell neoplasm alopecia areata hepatocellular carcinoma rheumatoid arthritis attention deficit hyperactivity disorder, inattentive type inherited disease susceptibility liver disease vitiligo lung carcinoma cervical cancer colorectal cancer myeloid neoplasm

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.