Protein Modification Ontology (MOD)

Name: Protein Modification Ontology (MOD)
Published: 2026-11-13T13:50:45.374984Z

Selected English labels and exact synonyms from the Protein Modification Ontology (MOD), retrieved 2026-11-07, with source identifiers and spelling preserved. Licensed CC BY 4.0; full attribution is listed under Sources. Under semantic review; not endorsed by the ontology's maintainers.

Curator: Oliver Bennett

Languages shown reflect this page; source translations may cover only some concepts.

English
crotonylated L-histidineUnrated
potassium carboxylate C-terminal residueUnrated
3-[(2,6-dimethylpiperidin-1-yl)acetyl]amino)propanoylUnrated TMT6plex-126 reporter+balance reagent acylated residueUnrated
carbon monoxide dehydrogenase nickel-iron cofactorUnrated METAL Nickel-iron-sulfur (Ni-4Fe-5S)Unrated METAL Nickel-iron-sulfur (Ni-4Fe-5S); via tele nitrogenUnrated mu-1:2kappaS-sulfido-mu3-1:3:5kappaS-sulfido-mu3-2:3:4kappaS-sulfido-mu3-2:4:5kappaS-sulfido-mu3-3:4:5kappaS-sulfido-N1'-histidino-S-cysteinyl-1-iron-S-cysteinyl-2-nickel-3,4,5-tris-(S-cysteinyl iron)Unrated Ni-4Fe-5S clusterUnrated pentakis-L-cysteinyl L-histidino nickel tetrairon pentasulfideUnrated
iodoacetic acid - site WUnrated
2-amino-4-methylvaleramideUnrated 2-azanyl-4-methylpentanamideUnrated (2S)-2-amino-4-methylpentanamideUnrated alpha-aminoisocaproamideUnrated amidated L-leucineUnrated leucinamideUnrated LeuNUnrated L-leucine amideUnrated MOD_RES Leucine amideUnrated
(2S)-2-amino-3-(D-2-acetamido-2-deoxygalactopyranosyloxy)phenylpropanoic acidUnrated CARBOHYD O-linked (GalNAc) tyrosineUnrated mucin type O-glycosyltyrosineUnrated O4'-glycosyl-L-tyrosineUnrated O4'-(N-acetylamino)galactosyl-L-tyrosineUnrated O4'-(N-acetylgalactosaminyl)tyrosineUnrated
2-acetylamino-3-methylpentanoic acidUnrated 2-acetylazanyl-3-methylpentanoic acidUnrated (2S,3S)-2-acetamido-3-methylpentanoic acidUnrated acetylisoleucineUnrated AcIleUnrated N-acetylated L-isoleucineUnrated N-acetyl-L-isoleucineUnrated
Michael addition of BHT quinone methide to cysteineUnrated
3',5'-Br2TyrUnrated 3',5'-dibromo-L-tyrosineUnrated
IpResUnrated isoprenylated residueUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ4plex reporter+balance reagent acylated residueUnrated
IpCysUnrated isoprenylated cysteineUnrated
L-glutamic acid removalUnrated
O4'-[4-(2-aminoethyl)benzenesulfonyl]tyrosineUnrated
dCO2ModResUnrated modified residue with neutral loss of carbon dioxideUnrated
S-stearoylated residueUnrated
2'-fluoro-L-phenylalanineUnrated 2-fluorophenylalanineUnrated o-fluorophenylalanineUnrated ortho-fluorophenylalanineUnrated
tryptophan carboxylationUnrated
2-amino-5,6-dimercapto-7-methyl-3,7,8a,9-tetrahydro-8-oxa-1,3,9,10-tetraazaanthracen-4-one guanosine dinucleotideUnrated bis[8-amino-1a,2,4a,5,6,7,10-heptahydro-2-(trihydrogen diphosphate 5'-ester with guanosine)methyl-6-oxo-3,4-disulfanyl-pteridino[6,7-5,6]pyranoato-S3,S4]-aspartyl-molybdenumUnrated L-aspartyl molybdenum bis(molybdopterin guanine dinucleotide)Unrated nitrate reductase A aspartyl Mo-bisMGD cofactorUnrated phosphoric acid 4-(2-amino-4-oxo-3,4,5,6,-tetrahydro-pteridin-6-yl)-2-hydroxy-3,4-dimercapto-but-3-en-yl ester guanylate esterUnrated
MeLeuUnrated methylated leucineUnrated
isopropyl lysylUnrated
halogenated lysineUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ8plex reporter+balance reagent N-acylated residueUnrated
nemcUnrated N-ethylmaleimide derivatized cysteineUnrated
3x(2)H labeled L-leucineUnrated D(H)3LeuUnrated
(2S)-2-amino-6-([(9Z)-octadec-9-enoyl]amino)hexanoic acidUnrated N6-[(9Z)-1-oxo-9-octadecenyl]lysineUnrated N6-oleoyl-L-lysineUnrated
Br1HisUnrated L-bromohistidineUnrated MOD_RES BromohistidineUnrated
iodouridine monophosphate derivatized phenylalanineUnrated
isothiazolidinone ring crosslinked residuesUnrated
(2S)-2-([(4-[(2S)-2-amino-2-carboxyethyl]-1H-imidazol-1-yl)methyl]amino)-4-(methylsulfanyl)butanoic acidUnrated N-[(L-histidin-1'-yl)methyl]-L-methionineUnrated N-[(L-histidin-1'-yl)methyl]-L-methionine (Met)Unrated
2-(1-phosphono-1H-imidazol-5-yl)ethaniminiumUnrated 3'-phosphohistidine immonium ionUnrated Npi-phosphorylated L-histidineUnrated
3-[(2,6-dimethylpiperidin-1-yl)acetyl]amino)propanoylUnrated TMT6plex reporter+balance reagent N-acylated residueUnrated
Gygi ICAT(TM) d0 modified cysteineUnrated
3'-fluoro-L-phenylalanineUnrated 3-fluorophenylalanineUnrated meta-fluorophenylalanineUnrated m-fluorophenylalanineUnrated
1'-heme-L-histidineUnrated 2-[1-(N1'-histidyl)ethyl]protoporphyrin IXUnrated BINDING Heme (covalent; via tele nitrogen)Unrated N1'-histidyl hemeUnrated N(epsilon)-histidyl hemeUnrated N(tau)-histidyl hemeUnrated (S)-[7-ethenyl-12-[1-((2-amino-2-carboxyethyl)-1H-imidazol-1-yl)ethyl]-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-bis(2-carboxyethyl)-N21,N22,N23,N24]-ferrateUnrated tele-histidyl hemeUnrated
isotope tagged sufhydryl reagent modified cysteineUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ4plex-115 reporter+balance reagent N'-acylated histidineUnrated
2x(15)N labeled L-lysineUnrated
6-N-biotinylaminohexyl isopropyl phosphorofluoridateUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ8plex-117 reporter+balance reagent O3-acylated threonineUnrated
deuterium substituted residueUnrated D(H)ResUnrated
18-ethenyl-3-[1-((2-amino-2-carboxy)ethylsulfanyl)ethyl]-2,3,15,16-tetrahydro-2,7,13,17-tetramethyl-1,19-dioxo-(21H,22H,24H)-bilin-8,12-dipropanoic acidUnrated (2S,3R,16R)-18-ethenyl-3-[(1R)-1-(((2R)-2-amino-2-carboxy)ethylsulfanyl)ethyl]-8,12-bis(2-carboxyethyl)-2,7,13,17-tetramethyl-2,3,15,16-tetrahydrobilin-1,19(21H,22H,24H)-dioneUnrated BINDING Phycoerythrobilin chromophore (covalent; via 1 link)Unrated PEBUnrated phycoerythrobilin cysteine adductUnrated S-phycoerythrobilin-L-cysteineUnrated
EthylUnrated L-glutamic acid 5-ethyl esterUnrated
5-iodoacetamidofluoresceinUnrated
linker attached to peptide in Fmoc peptide synthesisUnrated
MOD_RES N-pyruvate 2-iminyl-valineUnrated N-pyruvic acid 2-iminyl-L-valineUnrated (S)-2-(1-carboxy-2-methylpropanimino)propanoic acidUnrated
naphthylalanine residueUnrated
heptosylated residueUnrated
HexUnrated Hexoses (Fru, Gal, Glc, Man)Unrated hexosylated residueUnrated O-Glycosyl-Unrated
3'-bromo-L-tyrosineUnrated 3'-BrTyrUnrated
Hex-HexNAcUnrated
O3-acylated L-serineUnrated
isotope tagged reagent derivatized residueUnrated
ESP-Tag light d0 - site KUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ8plex-116 reporter+balance reagent O3-acylated threonineUnrated
Me1ResUnrated monomethylated residueUnrated
2-azanylbutanedioic acidUnrated (2S)-2-aminobutanedioic acidUnrated aminosuccinic acidUnrated AspUnrated L-aspartic acidUnrated L-aspartic acid residueUnrated
SOxyCysUnrated sulfur oxygenated L-cysteineUnrated
(2S,3R)-2-amino-3-(alpha-D-mannopyranosyloxy)butanoic acidUnrated CARBOHYD O-linked (Hex)Unrated CARBOHYD O-linked (Man) threonineUnrated O3-mannosylthreonineUnrated O-glycosylthreonineUnrated O-mannosyl-L-threonineUnrated OManThrUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ4plex-116 reporter+balance reagent O3-acylated serineUnrated
(35)Cl and (37)Cl labeled 3',5'-dichlorotyrosineUnrated
alpha-amino acylated residueUnrated
(2R)-2-amino-3-([(2S)-2-amino-3-(4-hydroxyphenyl)propanoyl]sulfanyl)propanoic acidUnrated CROSSLNK Tyrosyl cysteine thioester (Cys-Tyr)Unrated S-[2-amino-3-(4-hydoxyphenyl)propanoyl]cysteineUnrated S-(L-tyrosyl)-L-cysteineUnrated tyrosine cysteine thioesterUnrated XLNK1TyrSCysUnrated
N-palmitoyl-S-(sn-1-2,3-dipalmitoyl-glycerol)cysteineUnrated ntermpeptripalmitatecUnrated
fluorescein-5-thiosemicarbazide - site KUnrated
Applied Biosystems original ICAT(TM) d0 modified cysteineUnrated
4x(13)C labeled alpha-amino succinylated residueUnrated
pyridinyl ring crosslinked residuesUnrated
fluorescein labelling of peptide N-terminal using NHS esterUnrated
S-geranylgeranyl-L-cysteine methyl esterUnrated SGergerOMeCysUnrated
10-fluoroethoxyphosphinyl-N-(biotinamidopentyl)decanamideUnrated
L-threonine removalUnrated
MeAsnUnrated methylated asparagineUnrated
modified N-formyl-L-methionine residueUnrated
MeSerUnrated methylated serineUnrated
NHS-LC-BiotinUnrated
N-timnodonoylated residueUnrated
Acetamidomethyl CystenylUnrated Acm-CysUnrated N-(hydroxymethyl)acetamide derivatized L-cysteineUnrated S-(acetamido)methyl-L-cysteineUnrated S-(acetylamino)methyl-L-cysteineUnrated
GPIGlyUnrated LIPID GPI-anchor amidated glycineUnrated N-glycyl-glycosylphosphatidylinositolethanolamineUnrated
MePheUnrated methylated phenylalanineUnrated
2,4-BisTrp-6,7-dione (from Tryptophan)Unrated 2-amino-3-[2-[2-amino-3-(2-carboxyethyl)-6,7-dioxo-1H-indol-4-yl]-1H-indol-3-yl]propanoic acidUnrated 3-[(2S)-2-amino-2-carboxyethyl]-4-(3-[(2S)-2-amino-2-carboxyethyl]-1H-indol-2-yl)-6,7-indolinedioneUnrated 4-(2'-tryptophyl)tryptophan-6,7-dioneUnrated 4-(L-tryptophan-2-yl)-L-tryptophyl quinoneUnrated 4'-(L-tryptophan)-L-tryptophyl quinoneUnrated 4'-tryptophan-tryptophylquinoneUnrated alpha,alpha'-diamino-6',7'-dihydro-6',7'-dioxo-(2,4'-bi-1H-indole)-3,3'-dipropanoic acidUnrated CROSSLNK Tryptophan tryptophylquinone (Trp-Trp)Unrated TTQUnrated XLNK-4'Trp-TrpQUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ4plex-117, mTRAQ heavy, reporter+balance reagent acylated residueUnrated
Hex9HexNAc2 N4-glycosylated asparagineUnrated
N6-acylated L-lysineUnrated N6AcylLysUnrated
2-amino-L-tyrosineUnrated
3x(13)C labeled N6-propanoyl-L-lysineUnrated
3x(2)H labeled L-glutamic acid 5-methyl esterUnrated trideuteromethyleUnrated
MeIleUnrated methylated isoleucineUnrated
monofluorinated L-phenylalanineUnrated phefUnrated
4-methyl-1-methylidenepiperazin-1-iumUnrated iTRAQ8plex-113 reporter fragmentUnrated
2-(4-amino-3-oxo-isothiazolidin-2-yl)-3-hydroxy-propanoic acidUnrated (2S)-2-[(4R)-4-amino-3-oxo-1,2-thiazolidin-2-yl]-3-hydroxypropanoic acidUnrated 4-amino-3-isothiazolidinone-L-serineUnrated CROSSLNK N,N-(cysteine-1,S-diyl)serine (Cys-Ser)Unrated N,N-(L-cysteine-1,S-diyl)-L-serineUnrated serine-cysteine sulfenyl amide cross-linkUnrated serine-cysteine sulphenyl amide cross-linkUnrated
dehydrobutyrine (Met)Unrated dHAbu(Met)Unrated
Michael addition of BHT quinone methide to lysineUnrated
modified L-isoleucine residueUnrated ModIleUnrated
stearoylated residueUnrated
2-azanyl-6-[(carboxyacetyl)azanyl]hexanoic acidUnrated (2S)-2-amino-6-[(carboxyacetyl)amino]hexanoic acidUnrated malonyllysineUnrated MOD_RES N6-malonyllysineUnrated N6-(carboxyacetyl)lysineUnrated N6-malonyl-L-lysineUnrated N6-malonyllysineUnrated N(epsilon)-(malonyl)lysineUnrated
Hex1HexNAc2Pent1 N4-glycosylated asparagineUnrated
2-(4-hydroxyphenyl)ethaniminiumUnrated tyrosine immonium ionUnrated
thiophosphorylated residueUnrated

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