Term Name:	antigen
Synonyms:	antigens
Definition:	Any substance that stimulates an immune response in the body, such as through antibody production or by presentation to a T-cell receptor after binding to a major histocompability complex (MHC).
Ontology:	ChEBI [CHEBI:59132] ( EBI )

Relationships

is a type of:	biological role
has subtype:	immunogen neoantigen phosphoantigen tumour antigen xenoantigen
inverse has_role:	(4-hydroxy-3-iodo-5-nitrophenyl)acetic acid 1,2-di-O-myristoyl-sn-glycero-3-phosphocholine 1,2-di-O-myristoyl-sn-glycero-3-phosphosulfocholine 1-O-(alpha-D-galactopyranosyl)-N-icosa-11,14-dienoylphytosphingosine 1-O-(alpha-D-galactopyranuronosyl)-N-tetradecanoyldihydrosphingosine 1-O-(alpha-D-galactosyl)-N-hexacosanoylphytosphingosine 1-O-(alpha-D-glucosyl)-N-hexacosanoylphytosphingosine 1-O-(alpha-lactosyl)-N-hexacosanoylphytosphingosine 1-O-[alpha-D-galactosyl-(1->2)-alpha-D-galactosyl]-N-hexacosanoylphytosphingosine 1-O-linoleoyl-2-O-oleoyl-3-O-alpha-D-galactosyl-sn-glycerol 2-O-(alpha-D-mannopyranosyl)-1-phosphatidyl-1D-myo-inositol 2-O-oleoyl-3-O-palmitoyl-1-O-alpha-D-galactosyl-sn-glycerol 3-alpha-D-glucuronosyl-2-[(10R)-10-methyloctadecanoyl]-1-palmitoyl-sn-glycerol 3-alpha-D-glucuronosyl-2-palmitoyl-1-[(10R)-10-methyloctadecanoyl]-sn-glycerol 3-alpha-D-glucuronosyl-2-palmitoyl-1-stearoyl-sn-glycerol 3-O-hydroxyphthioceranoyl-2-O-stearoyl-2'-O-sulfo-alpha,alpha-trehalose 5'-AsGsCsCsGsCsGsAsCsTsTsCsTsAsGsAsCsT-3' 5'-CsGsGsCsTsCsCsAsTsGsTsAsCsAsGsCsAsTsGsCsG-3' 5'-GsCsAsGsTsCsTsAsTsTsAsCsTsGsTsGsCsGsAsGsA-3' 5'-GsCsCsGsAsGsGsTsCsCsAsTsGsTsCsGsTsAsCsGsC-3' 5'-GsCsGsTsAsCsGsAsCsAsTsGsGsAsCsCsTsCsGsGsC-3' 5'-TCAACC-3' 5'-TsGsTsGsGsGsTsTsAsAsGsAsCsTsTsTsTsTsAsCsC-3' 5-(2-oxoethylideneamino)-6-D-ribitylaminouracil 5-(2-oxopropylideneamino)-6-D-ribitylaminouracil 6-deoxy-D-glucos-6-yl corynomycolate 6-O-(1-O-stearoyl-sn-glycero-3-phosphono)-1D-myo-inositol [->2)-beta-Man-(1->2)-alpha-Man-(1->2)-[alpha-Glc-(1->3)]-alpha-Man(1->2)-alpha-Man(1->3)-beta-GlcNAc-(1->]2 [3)-alpha-D-Fucp-(1->2)-beta-L-Rhap-(1->]n [4)-[beta-D-Glcp-(1->6)]-[alpha-L-Rhap-(1->3)]-alpha-D-Glcp-(1->3)-alpha-L-Rhap2Ac-(1->3)-beta-D-GlcpNAc-(1->]n [P-4)-alpha-D-GlcpNAc-(1-P-4)-alpha-D-GlcpNAc-(1-P-4)-alpha-D-GlcpNAc-(1-P-4)-alpha-D-GlcpNAc-(1-P-4)-alpha-D-GlcpNAc-(1-P-4)-alpha-D-GlcpNAc-(1-P-4)-alpha-D-GlcpNAc-(1-] A. haemolyticus strain 57 O-specific polysaccharide A. haemolyticus strain 61 O-specific polysaccharide acetyl cardiolipin acetyl-GPL-2 alpha-D-galactosyl-(1->3)-D-galactose alpha-D-galactosyl-(1->4)-beta-D-galactosyl-(1->4)-beta-D-glucosylceramide alpha-D-GalN-(1->4)-[alpha-LD-Hep-(1->2)-alpha-DD-Hep-(1->2)]-alpha-D-GalA-yl group alpha-D-GalNAc-(1->3)-[alpha-L-Fuc-(1->2)]-beta-D-Gal-(1->3)-beta-D-GalNAc-(1->3)-alpha-D-Gal-(1->4)-beta-D-Gal-(1->4)-beta-D-Glc-(1->1')-Cer alpha-D-GalNpAc-(1->3)-beta-D-GalpNAc alpha-D-GalpNAc-(1->3)-[alpha-L-Fucp-(1->2)]-beta-D-Galp alpha-D-GalpNAc-(1->3)-[alpha-L-Fucp-(1->2)]-beta-D-Galp-(1->3)-alpha-D-GalpNAc alpha-D-GalpNAc-(1->3)-[alpha-L-Fucp-(1->2)]-beta-D-Galp-(1->3)-beta-D-GalpNAc alpha-D-GalpNAc-(1->3)-[alpha-L-Fucp-(1->2)]-beta-D-Galp-(1->3)-D-GlcpNAc alpha-D-GalpNAc-(1->3)-[alpha-L-Fucp-(1->2)]-beta-D-Galp-(1->4)-D-GlcpNAc alpha-D-Glcp-(1->3)-beta-D-Glcp-(1->4)-[alpha-D-GlcpA-(1->3)]-beta-D-Manp-(1->4)-alpha-D-Glcp alpha-D-GlcpA-(1->3)-beta-D-Manp-(1->4)-alpha-D-Glcp-(1->3)-beta-D-Glcp-(1->4)-[alpha-D-GlcpA-(1->3)]-beta-D-Manp-(1->4)-alpha-D-Glcp alpha-D-GlcpNAc-(1->2)-L-alpha-D-Hepp-(1->3)-L-alpha-D-Hepp alpha-D-GlcpNH2-(1->7)-alpha-LD-Hepp-(1->2)-[alpha-LD-Hepp-(1->6)]-alpha-LD-Hepp-(1->3)-[alpha-D-Glcp-(1->6)]-[beta-D-Glcp-(1->4)]-alpha-LD-Hepp-(1->5)-4,7-anhydro-Kdo alpha-D-Kdo-(2->4)-alpha-D-Kdo-(2->4)-alpha-D-Kdo-(2->6)-beta-D-GlcN4P-(1->6)-alpha-D-GlcN1P alpha-D-Kdo-(2->4)-alpha-D-Kdo-(2->6)-beta-D-GlcN-4P-(1->6)-alpha-D-GlcN-1P alpha-D-Kdo-(2->8)-alpha-D-Kdo-(2->4)-alpha-D-Kdo-(2->6)-beta-D-GlcN-4P-(1->6)-alpha-D-GlcN-1P alpha-Kdo-(2->4)-alpha-Kdo-OAll alpha-Kdo-(2->8)-alpha-7-O-Me-Kdo alpha-Kdo-(2->8)-alpha-Kdo-(2->4)-alpha-Kdo-OAll alpha-Kdo-(2->8)-alpha-Kdo-OAll alpha-Kdo-CH2OH-(2->4)-alpha-Kdo alpha-L-Fuc-(1->2)-[alpha-D-Gal-(1->3)]-beta-D-Gal-(1->3)-beta-D-GlcNAc-(1->3)-alpha-D-Gal-yl group alpha-L-Fuc-(1->2)-[alpha-D-GalNAc-(1->3)]-beta-D-Gal-(1->3)-beta-D-GlcNAc-(1->3)-alpha-D-Gal-yl group alpha-L-Fuc-(1->2)-beta-D-Gal-(1->3)-beta-D-GlcNAc-(1->3)-alpha-D-Gal-yl group alpha-L-Fuc-(1->2)-beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-alpha-D-Gal-yl group alpha-L-Fuc-(1->3)-[beta-D-Gal-(1->4)]-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->3)-beta-D-GalNAc-(1->4)-[alpha-NeuAc-(2->3)]-beta-D-Gal-(1->4)-beta-D-Glc-(1<->1')-Cer alpha-L-Fucp-(1->2)-beta-D-Galp-(1->3)-[alpha-L-Fucp-(1->4)]-D-GlcNAc alpha-L-Fucp-(1->2)-beta-D-Galp-(1->4)-[alpha-L-Fucp-(1->3)]-beta-D-GlcpNAc alpha-L-Fucp-(1->2)-beta-D-Galp-(1->4)-[alpha-L-Fucp-(1->3)]-beta-D-GlcpNAc-(1->3)-D-Galp alpha-L-Fucp-(1->2)-beta-D-Galp-(1->4)-[alpha-L-Fucp-(1->3)]-D-GlcpNAc alpha-L-Fucp-(1->3)-[beta-D-Galp-(1->4)]-D-GlcpNAc alpha-L-Rhap-(1->-3)-[alpha-L-Rhap-(1->3)-beta-D-GlcpNAc-(1->4)]-[beta-D-Glcp-(1->6)]-alpha-D-GlcpO[CH2]2NH2 alpha-L-Rhap-(1->3)-[alpha-D-Glcp-(1->4)]-alpha-L-Rhap-(1->3)-beta-D-GlcpNAc alpha-L-Rhap-(1->3)-[alpha-D-Glcp-(1->4)]-alpha-L-Rhap-(1->3)-beta-D-GlcpNAc-(1->2)-alpha-L-Rhap alpha-L-Rhap-(1->3)-[alpha-L-Rhap-(1->3)-[alpha-L-Rhap-(1->3)-[beta-D-Glcp-(1->6)]-alpha-D-Glcp-(1->3)-alpha-L-Rhap2Ac-(1->3)-GlcpNAc-(1->4)]-[beta-D-Glcp-(1->6)]-alpha-D-Glc-(1->3)-alpha-L-Rhap2Ac-(1->3)-beta-D-GlcpNAc-(1->4)]-[beta-D-Glcp-(1->6)]-alpha-D-Glcp-(1->3)-alpha-L-Rhap2Ac-(1->3)-beta-D-GlcpNacO[CH2]2NH2 alpha-N-acetylneuraminosyl-(2->3)-[beta-D-galactosyl-(1->3)-N-acetyl-beta-D-galactosaminyl-(1->4)]-beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1')-N-acylsphingosine alpha-N-acetylneuraminyl-(2->3)-beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1')-ceramide alpha-Neu4Ac5Gc-(2->3)-beta-D-Galp-(1->4)-beta-D-Glcp-(1<->1')-Cer alpha-Neu5Gc-(2->3)-beta-D-Galp-(1->4)-beta-D-Glcp-(1<->1')-Cer alpha-Neu5Gc-(2->3)-beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->3)-beta-D-Galp-(1->4)-GlcpNAc-(1->3)-beta-D-Galp-(1->4)-beta-D-Glcp-(1<->1')-Cer alpha-Neup5Ac-(2->3)-beta-D-Galp-(1->3)-beta-D-GalpNAc-(1->3)-alpha-D-Galp-(1->4)-beta-D-Galp-(1->4)-beta-D-Glcp benzyl cinnamate beta-D-Gal-(1->3)-beta-D-GalNAc-(1->4)-[alpha-Neu5Gc-(2->3)]-beta-D-Gal-(1->4)-beta-D-Glc-(1<->1')-Cer beta-D-Galp-(1->3)-[alpha-L-Fucp-(1->4)]-D-GlcpNAc beta-D-Galp-(1->3)-beta-D-GalpNAc-(1->3)-alpha-D-Galp-(1->4)-beta-D-Galp-(1->4)-beta-D-Glcp beta-D-Galp-(1->4)-[alpha-L-Fucp-(1->3)]-beta-D-GlcpNAc-(1->3)-beta-D-Galp beta-D-Galp-(1->4)-beta-D-Glcp-(1->6)-[beta-D-Glcp-(1->4)]-beta-D-GlcpNAcOCH2CH2N3 beta-D-GlcA-(1->3)-beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-beta-D-Glc-(1<->1')-Cer beta-D-Glcp-(1->4)-[alpha-D-GlcpA-(1->3)]-beta-D-Manp-(1->4)-alpha-D-Glcp beta-D-Glcp-(1->4)-[alpha-D-GlcpA-(1->3)]-beta-D-Manp-(1->4)-alpha-D-Glcp-(1->3)-beta-D-Glcp-(1->4)-[alpha-D-GlcpA-(1->3)]-beta-D-Manp-(1->4)-alpha-D-Glcp beta-D-Glcp-(1->6)-[alpha-L-Rhap-(1->3)]-alpha-D-Glcp-(1->3)-alpha-L-Rhap2Ac-(1->3)-beta-D-GlcpNAcO[CH2]2NH2 beta-D-Glcp-(1->6)-[beta-D-GlcpNAc-(1->4)]-[alpha-L-Rhap-(1->3)]-alpha-D-Glcp-(1->3)-alpha-L-Rhap2AcO[CH2]2NH2 beta-D-Glcp-(1->6)-{beta-D-Glcp-(1->6)-[alpha-L-Rhap-(1->3)]-alpha-D-Glcp-(1->3)-alpha-L-Rhap2Ac-(1->3)-beta-D-GlcpNAc-(1->4)}-[alpha-L-Rhap-(1->3)]-alpha-D-Glcp-(1->3)-alpha-L-Rhap2Ac-(1->3)-beta-D-GlcpNAcO[CH2]2NH2 beta-D-GlcpA-(1->4)-beta-D-Glcp-(1->3)-beta-D-GlcpA-(1->4)-beta-D-GlcpOCH2CH2N3 beta-D-Manp-(1->4)-alpha-D-Glcp-(1->3)-beta-D-Glcp-(1->4)-[alpha-D-GlcpA-(1->3)]-beta-D-Manp-(1->4)-alpha-D-Glcp Brucella O-antigen Brucella sp. O-PS A-antigen Brucella sp. O-PS M-antigen C80 D-glucose mono(keto-meromycolate) colanic acid d(Gs)19dG DDM-838 dimethyl cardiolipin diphosphatidyl propylene glycol E. coli 180/C3 O-specific polysaccharide E. coli O5:K4:H4 O-specific polysaccharide E. coli O65:K-:H- O-specific polysaccharide enterobacterial common antigen fluorescein isothiocyanate ganglioside GM2 (18:0) glucose 6-monomycolate (C85) glucuronoxylomannan glycerol mono(keto-meromycolate) glycerol monomycolate (C85) GPL C-II GPL P-I GPL P-II GPL P-IV GPL-1 GPL-4 GPL-8 GPL-9I GPL-21 GPL-25 GPL-26 isopentenyl diphosphate K antigen keto-meromycolic acid lactogangliotetraosylceramide lipoarabinomannan N(6)-acetyl-N(2)-(5'-phosphonatopyridoxyl)-L-lysinate(2-) N(6)-acetyl-N(2)-(5'-phosphopyridoxyl)-L-lysine N(6)-carboxymethyl-L-lysine N-(5'-phosphonatopyridoxyl)-D-alaninate(2-) N-(5'-phosphonatopyridoxyl)-L-alaninate(2-) N-(5'-phosphopyridoxyl)-L-alanine N-[(2S,3S,4R)-1-(alpha-D-galactosyloxy)-3,4-dihydroxyoctadecan-2-yl]hexacosanethioamide N-acetyl-beta-D-galactosaminyl-(1->3)-alpha-D-galactosyl-(1->4)-beta-D-galactosyl-(1->4)-beta-D-glucosylceramide N-glycoloyl-beta-neuraminic acid N-hexacosanoylisoglobotriaosyl ceramide P. aeruginosa immunotype 3 O-specific polysaccharide P. aeruginosa serotype O5 O-antigen polysaccharide P. mirabilis 9B-m O-specific polysaccharide P. mirabilis O6 O-specific polysaccharide P. mirabilis O11 O-specific polysaccharide P. mirabilis O23 O-deacetylated O-specific polysaccharide P. mirabilis O24 O-specific polysaccharide P. mirabilis O29 O-specific polysaccharide P. mirabilis O43 O-specific polysaccharide P. stuartii O4 O-specific polysaccharide Para-LP-01 phosphatidylinositol mannoside PIM6 Proteus genomospecies 3J-r O-specific polysaccharide ribothymidine S. flexneri serotype 1a O-polysaccharide (O factor 9-negative) S. flexneri serotype 1a O-polysaccharide (O factor 9-positive) S. flexneri serotype 1b O-polysaccharide (O factor 9-positive) S. flexneri serotype 2a O-polysaccharide (O factor 9-negative) S. flexneri serotype 2a O-polysaccharide (O factor 9-positive) S. flexneri serotype 2a O-specific polysaccharide S. flexneri serotype 2b O-specific polysaccharide S. flexneri serotype 3a O-specific polysaccharide S. flexneri serotype 5a O-polysaccharide (O factor 9-negative) S. flexneri serotype 5a O-polysaccharide (O factor 9-positive) S. flexneri serotype 5a O-specific polysaccharide S. flexneri serotype 5b O-specific polysaccharide S. flexneri serotype 6 O-polysaccharide (O factor 9-positive) S. flexneri serotype X O-specific polysaccharide S. flexneri serotype Y O-polysaccharide (O factor 9-negative) S. flexneri serotype Y O-polysaccharide (O factor 9-positive) tetraoleyl cardiolipin