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
S-([1,1,2-(2)H3]-3-amino-3-oxopropyl)cysteineUnrated S-([1,1,2-(2)H3]-carbamoylethyl)-L-cysteineUnrated S-([1,1,2-(2)H3]-carboxamidoethyl)-L-cysteineUnrated S-([1,1,2-(2)H3]-propanamide)-L-cysteineUnrated
2-azanyl-3-[(3S)-2-oxo-2,3-dihydro-1H-indol-3-yl]propanoic acidUnrated 2-oxo-L-tryptophanUnrated 2'-oxo-L-tryptophanUnrated 2-oxotryptophanUnrated (2S)-2-amino-3-[(3S)-2-oxo-2,3-dihydro-1H-indol-3-yl]propanoic acidUnrated
3-[(2,6-dimethylpiperidin-1-yl)acetyl]amino)propanoylUnrated TMT6plex-128 reporter+balance reagent N'-acylated histidineUnrated
2-aminomethyl-1,3-oxazole-4-carboxylic acidUnrated 2-azanylmethyl-1,3-oxazole-4-carboxylic acidUnrated CROSSLNK Oxazole-4-carboxylic acid (Gly-Ser)Unrated glycine oxazole-4-carboxylic acidUnrated
(1S)-1-carboxy-N,N,N-trimethylethanaminiumUnrated (1S)-1-carboxy-N,N,N-trimethylethanazaniumUnrated (2S)-2-(trimethylammonio)propanoic acidUnrated MOD_RES N,N,N-trimethylalanineUnrated N2Me3+AlaUnrated NMe3AlaUnrated N,N,N-trimethylalanine cationUnrated N,N,N-trimethylalaniniumUnrated N,N,N-trimethylated L-alanineUnrated N,N,N-trimethyl-L-alanineUnrated
diphenylmethyl modified residueUnrated DpmUnrated
ManResUnrated monomannosylated residueUnrated
4Mn-Ca-5O clusterUnrated L-alaninato bis-L-aspartato tris-L-glutamato L-histidino calcium tetramanganese pentoxideUnrated mu2-alaninato-1kappaO(1),3kappaO(1')-mu2-aspartato-1kappaO(4),5kappaO(4')-mu2-aspartato-2kappaO(4),3kappaO(4')-mu2-glutamato-3kappaO(5),4kappaO(5')-mu2-glutamato-4kappaO(5),5kappaO(5')-mu-glutamato-2kappaO(5)-mu-histidino-2kappaN(tau)-mu4-oxido-1:2:4:5kappa(4)O-tri-mu3-oxido-1:2:3kappa(3)O;1:3:4kappa(3)O;2:3:4kappa(3)O;mu-oxido-4:5kappa(2)O-calciumtetramanganeseUnrated photosystem II catalytic clusterUnrated
(2S,4R)-2,6-diamino-4-hydroxyhexanoic acidUnrated 4-hydroxylated L-lysineUnrated 4-hydroxy-L-lysineUnrated 4HyLysUnrated alpha,epsilon-diamino-gamma-hydroxycaproic acidUnrated L-threo-gamma-hydroxylysineUnrated MOD_RES 4-hydroxylysineUnrated
1-aspartic acid ester with 6-chondroitin 4-sulfateUnrated 1-chondroitin sulfate-L-aspartic acid esterUnrated MOD_RES Aspartate 1-(chondroitin 4-sulfate)-esterUnrated poly[beta-1,4-D-glucopyranuronosyl-beta-1,3-(2-acetamido-2-deoxy-4-sulfate D-galactosyl)]beta-1,4-D-glucopyranuronosyl-beta-1,3-(2-acetamido-2-deoxy-4-sulfate-6-(1-L-aspartyl)-D-galactose)Unrated protein-glycosaminoglycan-protein cross-linkUnrated
(2S)-2-amino-6-(5'-adenosine phosphonamino)hexanoic acidUnrated 5'-adenylic-N6-L-lysineUnrated ACT_SITE N6-AMP-lysine intermediateUnrated AMP LysylUnrated epsilon-5'-adenylic-L-lysineUnrated L-lysine monoanhydride with 5'-adenylic acidUnrated N6AMPLysUnrated N6-L-lysine 5'-adenosine phosphoramidesterUnrated N6-(phospho-5'-adenosine)-L-lysineUnrated N(zeta)-5'-adenylic-L-lysineUnrated
1,4.2-anhydro(L-alanyl-L-aspartic acid)Unrated (2S,5S)-2-methyl-3,7-dioxo-1,4-diazepane-5-carboxylic acidUnrated CROSSLNK Alanine isoaspartyl cyclopeptide (Ala-Asn)Unrated L-alanyl-L-isoaspartyl cyclopeptideUnrated
2-amino-3-hydroxysuccinic acidUnrated 2-azanyl-3-hydroxybutanedioic acidUnrated (2S,3R)-2-amino-3-hydroxybutanedioic acidUnrated (2S,3R)-3-hydroxyaspartic acidUnrated 3-hydroxyaspartic acidUnrated (3R)3HyAspUnrated erythro-beta-hydroxylated L-aspartic acidUnrated hydroxylationdUnrated L-erythro-beta-hydroxyaspartic acidUnrated MOD_RES (3R)-3-hydroxyaspartateUnrated
2-aminopropionic acidUnrated 2-azanylpropanoic acidUnrated (2S)-2-aminopropanoic acidUnrated alpha-alanineUnrated alpha-aminopropionic acidUnrated Asp(Ala)Unrated L-alanineUnrated L-alanine residue (Asp)Unrated MOD_RES Beta-decarboxylated aspartateUnrated
(2S)-2-amino-3-(4-[(2S)-2-amino-2-carboxyethyl]phenoxy)-3-methylbutanoic acidUnrated 3-(O4'-L-tyrosyl)-L-valineUnrated CROSSLNK 3-(O4'-tyrosyl)-valine (Val-Tyr)Unrated
(2-aminosuccinimidyl)acetic acidUnrated (2-aminosuccinimidyl)acetic acid (Asp)Unrated (3-amino-2,5-dioxo-1-pyrrolidinyl)acetic acidUnrated [(3S)-3-amino-2,5-dioxopyrrolidin-1-yl]acetic acidUnrated anhydroaspartyl glycineUnrated aspartimide glycineUnrated CROSSLNK (2-aminosuccinimidyl)acetic acid (Asp-Gly)Unrated N-(2-aminosuccinyl)glycineUnrated
2-(4-phosphonoxyphenyl)ethaniminiumUnrated phosphotyrosine immonium ionUnrated
dPhosModResUnrated modified residue with neutral loss of phosphateUnrated
I1TyrUnrated iodinationyUnrated monoiodinated tyrosineUnrated
6-aminoquinolyl-N-hydroxysuccinimidyl carbamateUnrated
iminobiotinyl modified residueUnrated
crosslinked L-arginine residueUnrated XlnkArgUnrated
2-amino-3-oxopropionic acidUnrated L-3-oxoalanineUnrated L-aminomalonaldehydic acidUnrated L-amino-malonic acid semialdehydeUnrated MOD_RES 3-oxoalanine (Cys)Unrated MOD_RES 3-oxoalanine (Ser)Unrated (S)-2-amino-3-oxopropanoic acidUnrated
4-sulfophenyl isothiocyanate alpha-amino derivatized residueUnrated alpha-amino-[(4-sulfophenyl)carbamothioyl] residueUnrated
fucosylated biantennaryUnrated
1-thioglycineUnrated 2-amino-1-sulfanylethanoneUnrated aminoethanethioic acidUnrated aminothioacetic acidUnrated MOD_RES 1-thioglycineUnrated S(O)GlyUnrated
monosodium saltUnrated Na1ResUnrated SodiumUnrated
1x(18)O labeled deamidated residueUnrated
(2S)-2-amino-6-([(3R)-3,6-diaminohexanoyl]amino)-5-hydroxyhexanoic acidUnrated 5-hydroxy-N6-[(3R)-beta-lysyl]lysineUnrated 5-hydroxy-N6-(beta-lysyl)-L-lysineUnrated EF-P lysine derivativeUnrated lysyl spermidine derivative [misidentification]Unrated MOD_RES N6-(3,6-diaminohexanoyl)-5-hydroxylysineUnrated N6-[(3R)-3,6-diaminohexanoyl]-L-5-hydroxylysineUnrated N6-(beta-lysyl)-L-5-hydroxylysineUnrated
isocyanate reagent derivatized residueUnrated
[3-(2,5)-dioxopyrrolidin-1-yloxycarbonyl)-propyl]dimethyloctylammoniumUnrated
2-(L-cystein-S-yl)-D-phenylalanineUnrated (2S)-2-amino-2-[(2R)-2-amino-2-carboxyethyl]sulfanyl-3-phenylpropanoic acidUnrated (2S,5R)-2,5-diamino-3-thia-2-phenylmethylhexanedioic acidUnrated 2-(S-L-cysteinyl)-D-phenylalanineUnrated alpha-(L-cystein-S-yl)-D-phenylalanineUnrated CROSSLNK 2-cysteinyl-D-phenylalanine (Cys-Phe)Unrated
2-azanyl-3-phenylpropanoic acidUnrated (2S)-2-amino-3-phenylpropanoic acidUnrated alpha-amino-beta-phenylpropionic acidUnrated L-phenylalanineUnrated L-phenylalanine residueUnrated PheUnrated
fluorescein-5-thiosemicarbazide - site RUnrated
(37)Cl labeled 3'-chlorotyrosineUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ8plex-115 reporter+balance reagent N6-acylated lysineUnrated
2,4-bis(azanyl)-4-oxobutanoic acidUnrated 2,4-diamino-4-oxobutanoic acidUnrated 2-amino-3-carbamoylpropanoic acidUnrated 2-amino-4-butanediamic acidUnrated 2-aminosuccinamic acidUnrated 2-aminosuccinic acid 4-amideUnrated (2S)-2-amino-4-butanediamic acidUnrated alpha-amino-beta-carbamylpropionic acidUnrated alpha-aminosuccinamic acidUnrated AsnUnrated aspartic acid 4-amideUnrated aspartic acid beta-amideUnrated beta-asparagineUnrated L-asparagineUnrated L-asparagine residueUnrated
(35)Cl labeled 3'-chlorotyrosineUnrated
MeAlaUnrated methylated alanineUnrated
O-phosphopantetheine-L-serine with neutral loss of pantetheineUnrated
Sulfanilic Acid (SA), heavy C13 - site DUnrated
carbamidometylhUnrated iodoacetamide derivatized histidineUnrated
2-(3-amino-3-carboxypropanoyl)amino-3-mercaptopropanoic acidUnrated 2-amino-N4-(1-carboxy-2-mercaptoethyl)butanediamic acidUnrated CROSSLNK Isoaspartyl cysteine isopeptide (Cys-Asn)Unrated N-beta-aspartylcysteineUnrated N-isoaspartyl cysteineUnrated N-(L-isoaspartyl)-L-cysteineUnrated (S)-2-amino-4-((R)-1-carboxy-2-sulfanylethyl)amino-4-oxobutanoic acidUnrated
delta-glycosyloxy- (of lysine) or beta-glycosyloxy- (of phenylalanine or tyrosine)Unrated
MOD_RES O-(phosphoribosyl dephospho-coenzyme A)serineUnrated O3-2'-(5''-phosphoribosyl-3'-dephosphocoenzyme A)-L-serineUnrated O3-(phosphate-5-ribosyl-alpha-2-adenosine-5-diphosphate pantetheine)-L-serineUnrated O3-(phosphoribosyl dephospho-coenzyme A)-L-serineUnrated O-(phosphoribosyl dephospho-coenzyme A)-L-serineUnrated OPRibdPCoASerUnrated
L-lysinoalanineUnrated
Cl1PheUnrated monochlorinated L-phenylalanineUnrated
N-acetyl-S-archeol-cysteineUnrated
natural, standard, encoded residueUnrated
methylamine Michael addition derivatized serineUnrated
2-amino-3-(12-hydroxy-3,7,11-trimethyl-3,6,10-dodecatrienylthio)propanoic acidUnrated (2R)-2-amino-3-([(2E,6E,10Z)-12-hydroxy-3,7,11-trimethyldodeca-2,6,10-trien-1-yl]sulfanyl)propanoic acidUnrated LIPID S-12-hydroxyfarnesyl cysteineUnrated S-12-hydroxyfarnesyl-L-cysteineUnrated S12HyFarnCysUnrated
O-thiophospho-L-serineUnrated
N-hexadecanoylated residueUnrated N-palmitoylated residueUnrated NPamResUnrated
2-azanylbutanedioic acidUnrated (2R)-2-aminobutanedioic acidUnrated aminosuccinic acidUnrated D-aspartic acidUnrated D-aspartic acid (Asp)Unrated
hydroxylated tyrosineUnrated HyTyrUnrated
2-PECUnrated 2-vinylpyridine derivatized cysteine residueUnrated Pyridylethyl CystenylUnrated S-[2-(pyridin-2-yl)ethyl]-L-cysteineUnrated S-(pyridin-2-ylethyl)-L-cysteineUnrated
L-glutamyl L-tyrosineUnrated N-(L-glutamyl)-L-tyrosineUnrated SITE Involved in polymerizationUnrated (S,S)-2-(2-aminopentanedio-1-yl)amino-3-(4-hydoxyphenyl)propanoic acidUnrated
(2S,3R,4R)-2-amino-4,5-dihydroxy-3-methylpentanoic acidUnrated (2S,3R,4R)-4,5-dihydroxyisoleucineUnrated (3R,4R)-4,5-dihydroxyisoleucineUnrated gamma,delta-dihydroxyisoleucineUnrated MOD_RES (3R,4R)-4,5-dihydroxyisoleucineUnrated
isothiocyanate reagent derivatized residueUnrated
2-methylazanylpropanoic acidUnrated (2S)-2-methylaminopropanoic acidUnrated MOD_RES N-methylalanineUnrated NMe1AlaUnrated N-methylalanineUnrated N-methylated L-alanineUnrated N-methyl-L-alanineUnrated
GSISerUnrated LIPID GPI-like-anchor amidated serineUnrated N-seryl-glycosylsphingolipidinositolethanolamineUnrated
N6-arachidonoyl-L-lysineUnrated
L-cysteine removalUnrated
2-amino-3-hydroxybutanoic acid 3-sulfateUnrated (2S,3R)-2-amino-3-(sulfooxy)butanoic acidUnrated MOD_RES SulfothreonineUnrated O3-sulfonothreonineUnrated O3-sulfothreonineUnrated O-sulfo-L-threonineUnrated threonine sulfate esterUnrated
O-glycosyl-L-tyrosineUnrated OGlycoTyrUnrated
2-[1-azanyl-2-hydroxyethyl]-1,3-thiazole-4-carboxylic acidUnrated 2-[(1S)-1-amino-2-hydroxyethyl]-1,3-thiazole-4-carboxylic acidUnrated CROSSLNK Thiazole-4-carboxylic acid (Ser-Cys)Unrated L-serine thiazole-4-carboxylic acidUnrated
(2S,3S,5Xi)-5-hydroxy-3-methylpyrrolidine-2-carboxylic acidUnrated 5Hy3MePro(Ile)Unrated 5-hydroxy-3-methyl-L-prolineUnrated 5-hydroxy-3-methyl-L-proline (Ile)Unrated 5-hydroxy-3-methylprolineUnrated beta-methyl-delta-hydroxyprolineUnrated MOD_RES 5-hydroxy-3-methylproline (Ile)Unrated
FeResUnrated iron containing modified residueUnrated
1'-(8alpha-FMN)-L-histidineUnrated 8alpha-(N1'-histidyl)FMNUnrated 8alpha-(N(epsilon)-histidyl)FMNUnrated MOD_RES Tele-8alpha-FMN histidineUnrated N(tau)-(8alpha-FMN)-histidineUnrated Ntele8aFMNHisUnrated (S)-2-amino-3-(1-[8alpha riboflavin 5'-dihydrogen phosphate]imidazol-4-yl)propanoic acidUnrated tele-(8alpha-FMN)-histidineUnrated
AdaUnrated adamantyl modified residueUnrated
(6Z,7aS)-3-[(1Z,4E,6E,8E)-1-hydroxy-3-oxodeca-1,4,6,8-tetraen-1-yl]-7a-methyl-6-[([(1S)-1-amino-1-carboxylpentyl]amino)methylidene]-5-[(2S)-2,3-dihydroxypropyl]-1-benzofuran-2,7(6H,7aH)-dioneUnrated DeepPurpleUnrated LavaPurpleUnrated Lightning FastUnrated N6-epicoccononyl lysine adductUnrated
thiophosphate labeled with biotin-HPDP -site SUnrated
Applied Biosystems original ICAT(TM) d8 modified cysteineUnrated
1x(18)O labeled deamidated L-glutamineUnrated
Hex3 N4-glycosylated asparagineUnrated
(37)Cl labeled 3',5'-dichlorotyrosineUnrated
1'-phosphohistidine immonium ionUnrated 2-((1-phosphono-1H-imidazol-4-yl)ethaniminiumUnrated Ntau-phosphorylated L-histidineUnrated
dHex1Hex6HexNAc3 N4-glycosylated asparagineUnrated
(2S,3S)-2-amino-3-methylpentanamideUnrated amidated L-isoleucineUnrated IleNUnrated isoleucinamideUnrated L-isoleucine amideUnrated MOD_RES Isoleucine amideUnrated
aspartyl 4-semialdehydeUnrated aspartyl aldehydeUnrated L-aminosuccinaldehydic acidUnrated L-aminosuccinic acid semialdehydeUnrated L-aspartate-beta-semialdehydeUnrated L-aspartic beta-semialdehydeUnrated L-aspartyl aldehydeUnrated L-aspartyl semialdehydeUnrated L-beta-formylalanineUnrated MOD_RES Aspartyl aldehydeUnrated (S)-2-amino-4-oxobutanoic acidUnrated
GPIAlaUnrated LIPID GPI-anchor amidated alanineUnrated N-alanyl-glycosylphosphatidylinositolethanolamineUnrated
9x(13)C,1x(15)N labeled L-phenylalanineUnrated
(18)O monosubstituted L-serineUnrated
XanUnrated xanthylUnrated
Sulfanilic Acid (SA), heavy C13 - site EUnrated
dehydrogenated tyrosineUnrated dHTyrUnrated MOD_RES 2,3-didehydrotyrosineUnrated
6x(13)C labeled residueUnrated
N6-(3,4-didehydroretinylidene)-L-lysineUnrated N6-3,4-didehydroretinylidene-L-lysineUnrated N6-3-dehydroretinal-L-lysineUnrated N6-3-dehydroretinyl-lysineUnrated (S)-2-amino-6-[(2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohexa-1,3-dien-1-yl)-2,4,6,8-nonatetraenylidene]aminohexanoic acidUnrated
2-amino-3-(2-oxoindolin-3-yl)propanoic acidUnrated oxindolylalanineUnrated Oxindolyl-L-alanineUnrated
phosphorylation to amine thiolUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ4plex reporter+balance reagent N-acylated residueUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ116YUnrated iTRAQ4plex-116 reporter+balance reagent O4'-acylated tyrosineUnrated
MOD_RES O-UMP-threonineUnrated O-(phospho-5'-uridine)-L-threonineUnrated OUMPThrUnrated
N-methylmaleimide modified L-lysineUnrated
FAD modified residueUnrated FADResUnrated
label cysteine with IGBP reagentUnrated
(2R)-2-amino-3-([(2S,3R)-2-amino-3-hydroxybutanoyl]sulfanyl)propanoic acidUnrated CROSSLNK Threonyl cysteine thioester (Cys-Thr)Unrated S-(2-amino-3-hydroxybutanoyl)cysteineUnrated S-(L-threonyl)-L-cysteineUnrated threonine cysteine thioesterUnrated XLNK1ThrSCysUnrated
carbamidomethyleUnrated iodoacetamide derivatized glutamic acidUnrated
2-azanyl-3-selanylpropanoic acidUnrated (2R)-2-amino-3-selanylpropanoic acidUnrated 3-selenylalanineUnrated L-selenocysteineUnrated L-selenocysteine residueUnrated NON_STD SelenocysteineUnrated SecUnrated SeCysUnrated selenium cysteineUnrated
Bruker Daltonics SERVA-ICPL(TM) quantification chemistry, heavy formUnrated

Next 100 concepts