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
Br1ResUnrated monobrominated residueUnrated
N1'-hexosaminylated tryptophanUnrated
crosslink between Arg and His sidechainsUnrated
(2S)-2-amino-6-(octanoylamino)hexanoic acidUnrated epsilon-octanoyllysineUnrated N6-(1-oxooctyl)-L-lysineUnrated N6-octanoyl-L-lysineUnrated N(zeta)-octanoyllysineUnrated
diMeBzlUnrated dimethylbenzylUnrated
2-nitrophenylsulphenylUnrated NpsUnrated
methylhUnrated NMeHisUnrated N-methylated L-histidineUnrated
3-[(2,6-dimethylpiperidin-1-yl)acetyl]amino)propanoylUnrated TMT6plex-131 reporter+balance reagent N6-acylated lysineUnrated
(4-methylpiperazin-1-yl)acetylUnrated mTRAQ light on ntermUnrated mTRAQ light reporter+balance reagent acylated N-terminalUnrated
5x(13)C-labeled L-methionine sulfoneUnrated
2,6-dimethyl-1-methylidenepiperidiniumUnrated cysTMT6plex-128 reporter fragmentUnrated TMT6plex-128 reporter fragmentUnrated
metal or metal cluster coordinated L-serine residueUnrated
modified L-methionine residueUnrated ModMetUnrated
crosslinked L-lysine residueUnrated XlnkLysUnrated
2-amino-5-(aminocarbonyl)aminopentanoic acidUnrated alpha-amino-delta-ureidovaleric acidUnrated CitUnrated citrullinationrUnrated CitrullineUnrated delta-ureidonorvalineUnrated L-citrullineUnrated MOD_RES CitrullineUnrated N5-(aminocarbonyl)ornithineUnrated N5-carbamoylornithineUnrated N5-carbamylornithineUnrated (S)-2-amino-5-(carbamoylamino)pentanoic acidUnrated
alpha-carboxyl methylated residueUnrated C1OMeResUnrated ctermpepmeesterUnrated ctermpepmethylUnrated
linoloylated residueUnrated
L-selenocysteinyl tungsten bis(molybdopterin guanine dinucleotide) (Cys)Unrated
(2S)-2-amino-3-(decanoyloxy)propanoic acidUnrated LIPID O-decanoyl threonineUnrated L-threonine decanoate esterUnrated O3-decanoyl-L-threonineUnrated O-decanoylated L-threonineUnrated O-decanoyl-L-threonineUnrated ODecThrUnrated
nucleotide or nucleic acid modified residueUnrated NucResUnrated
alpha-amino succinylated residueUnrated
reduction of disulfide crosslink in cystine to two cysteinesUnrated
4-methyl-1-methylidenepiperazin-1-iumUnrated mTRAQ light reporter fragmentUnrated
dimethylated residueUnrated Me2ResUnrated N,N dimethylation (of Arginine or Lysine)Unrated
4-methyl-1-methylidenepiperazin-1-iumUnrated iTRAQ4plex-116 reporter fragmentUnrated
methylated tyrosineUnrated MeTyrUnrated
(18)O disubstituted residueUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ8plex-119 reporter+balance reagent N6-acylated lysineUnrated
NaResUnrated sodium containing modified residueUnrated
omega-N-(2,2,5,7,8-pentamethylchroman-6-sulfonyl)-L-arginineUnrated PmcArgUnrated PMC arginylUnrated
(2S)-2-aminobutanediamideUnrated amidated L-asparagineUnrated AsnNUnrated asparaginamideUnrated L-asparagine amideUnrated MOD_RES Asparagine amideUnrated
2-(2-aminosuccinimidyl)pentanedioic acidUnrated 2-(2-aminosuccinimidyl)pentanedioic acid (Asp)Unrated (4S)-4-[(3S)-3-amino-2,5-dioxopyrrolidin-1-yl]-5-oxopentanoic acidUnrated aspartimide glutamic acidUnrated
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 4-amidated L-aspartic acidUnrated 4NAspUnrated alpha-amino-beta-carbamylpropionic acidUnrated alpha-aminosuccinamic acidUnrated aspartic acid 4-amideUnrated aspartic acid beta-amideUnrated beta-asparagineUnrated L-asparagineUnrated MOD_RES Amidated aspartic acidUnrated
3'-hydroxy-L-kynurenineUnrated hydroxykynureninwUnrated
2-carboxyglycineUnrated AmaUnrated aminomalonic acidUnrated aminomalonic acid (Ser)Unrated aminopropanedioic acidUnrated MOD_RES Aminomalonic acid (Ser)Unrated
(2S)-2-amino-5-([amino(phosphonoamino)methylidene]amino)pentanoic acidUnrated (2S)-2-amino-5-(N'-phosphonocarbamimidamido)pentanoic acidUnrated alpha-amino-delta-phosphonoguanidinovaleric acidUnrated MOD_RES PhosphoarginineUnrated N5-[imino(phosphonoamino)methyl]-L-ornithineUnrated N(gamma)-phosphoarginineUnrated N(omega)-phosphono-L-arginineUnrated omega-N-phospho-L-arginineUnrated PArgUnrated phosphoarginineUnrated
N-methylated prolineUnrated
2-azanyl-3-hydroxypropanoic acidUnrated (2S)-2-amino-3-hydroxypropanoic acidUnrated 3-hydroxy-L-alanineUnrated alpha-amino-beta-hydroxypropionic acidUnrated beta-hydroxyalanineUnrated L-serineUnrated L-serine residueUnrated SerUnrated
2,4,6-trimethyloxybenzyl modified residueUnrated TmobUnrated
bis[bis-L-cysteinyl iron disulfido]ironUnrated di-mu-1:2kappaS-sulfido di-mu-2:3kappaS-sulfido iron bis(bis-S-cysteinyliron)Unrated tetrakis-L-cysteinyl linear [3Fe-4S] clusterUnrated tetrakis-L-cysteinyl triiron tetrasulfideUnrated tetrakis-L-cysteinyl triiron tetrasulfide D2 clusterUnrated tetra-mu-sulfido tetrakis-S-L-cysteinyl triironUnrated
oxazole/oxazoline ring crosslinked residues (Ser)Unrated
2-amino-5-carbamimidamidopentanamideUnrated 2-amino-5-guanidinopentanamideUnrated (2S)-2-amino-5-[(diaminomethylidene)amino]pentanamideUnrated amidated L-arginineUnrated argininamideUnrated ArgNUnrated L-arginine amideUnrated MOD_RES Arginine amideUnrated
2,6-bisazanyl-5-hydroxyhexanoic acidUnrated 2,6-diamino-2,3,4,6-tetradeoxyhexonic acidUnrated (2S,5R)-2,6-diamino-5-hydroxyhexanoic acidUnrated (2S,5R)-5-hydroxylysineUnrated 5-hydroxylated L-lysineUnrated 5HyLysUnrated alpha,epsilon-diamino-delta-hydroxycaproic acidUnrated L-erythro-delta-hydroxylysineUnrated MOD_RES (2S,5R)-5-hydroxylysineUnrated
N-acylated residueUnrated NAcylResUnrated
diaminopropionylUnrated
dehydropyrrolizidine alkaloid (dehydroretronecine) derivatized cysteineUnrated
copper(1+) L-glutamateUnrated cuprous saltUnrated
farnesylated residueUnrated FarnesylationUnrated FarnResUnrated
deoxyribonucleic acid linked residueUnrated DNAResUnrated
N-glucuronylated residueUnrated N-Glucuronyl (N terminus)Unrated
(2S)-2-amino-5-(beta-D-glucopyranosyl[imino(methylamino)methyl]amino)pentanoic acidUnrated NG-beta-D-glucosylarginineUnrated omega-N-(beta-D-glucosyl)-L-arginineUnrated omega-N-glucosyl-L-arginineUnrated omega-N-glycosyl-L-arginineUnrated
Sulfanilic Acid (SA), light C12 - site DUnrated
N6-palmitoleyl-L-lysineUnrated
Hex1HexNAc1NeuAc1 N4-glycosylated asparagineUnrated
FMN modified residueUnrated FMNResUnrated
(2S)-2-aminopropanamideUnrated AlaNUnrated alaninamideUnrated amidated L-alanineUnrated L-alanine amideUnrated MOD_RES Alanine amideUnrated
(2S,3S,5Xi)-5-hydroxy-3-methylpyrrolidine-2-carboxylic acidUnrated 5Hy3MeProUnrated 5-hydroxy-3-methyl-L-prolineUnrated 5-hydroxy-3-methyl-L-proline (Pro)Unrated 5-hydroxy-3-methylprolineUnrated beta-methyl-delta-hydroxyprolineUnrated MOD_RES 5-hydroxy-3-methylproline (Ile)Unrated
alpha-amino trimethylated residueUnrated N2Me3ResUnrated ntermtrimethylUnrated
beta-carbon thioether crosslinked residuesUnrated
2,4,6-tricarboxylic-pyrrolo[2,3-5,6]quinoline 8,9-quinoneUnrated 2,7,9-tricarboxy-1H-pyrrolo(2,3-f)quinoline-4,5-dioneUnrated 4,5-dihydro-4,5-dioxo-1H-pyrrolo[2,3-5,6]quinoline-2,7,9-tricarboxylic acidUnrated coenzyme PQQUnrated CROSSLNK Pyrroloquinoline quinone (Glu-Tyr)Unrated methoxatinUnrated pyrroloquinoline quinoneUnrated
2-(dihydroxymethyl)glycineUnrated 3,3-dihydroxyalanineUnrated 3,3-dihydroxy-L-alanineUnrated 3-hydroxy-L-serineUnrated 3-oxoalanine hydrateUnrated L-3,3-dihydroxyoalanine (Cys)Unrated (S)-2-amino-3,3-dihydroxypropanoic acidUnrated
CysHis-[V7Fe9S]Unrated L-cysteinyl-L-histidino-homocitryl vanadium heptairon nonasulfideUnrated L-cysteinyl-L-histidino-homocitryl vanadium heptairon nonasulfide carbideUnrated nitrogenase iron-vanadium cofactorUnrated
(2S)-2-amino-3-phenylpropanamideUnrated amidated L-phenylalanineUnrated L-phenylalanine amideUnrated MOD_RES Phenylalanine amideUnrated PheNUnrated phenylalaninamideUnrated
protonated L-alanine (L-alaninium) residueUnrated
(2S)-2-amino-6-([1-carboxyethylidene]amino)hexanoic acidUnrated ACT_SITE Schiff-base intermediate with substrateUnrated N6-pyruvic acid 2-iminyl-L-lysineUnrated
O-acylated residueUnrated OAcylResUnrated
2,4-diamino-3-(methylsulfanyl)-4-oxobutanoic acidUnrated (2R,3Xi)-2-amino-3-(methylsulfanyl)-4-butanediamic acidUnrated 3-carboxamido-S-methyl-cysteineUnrated 3-(methylthio)-L-asparagineUnrated beta-(methylthio)asparagineUnrated L-beta-methylthioasparagineUnrated
4x(2)H labeled alpha-amino succinylated residueUnrated
OMeThrUnrated O-methylated threonineUnrated
alpha-amino trimethylated protonated-residueUnrated N2Me3+ResUnrated
nitrosylated residueUnrated
brominated phenylalanineUnrated BrPheUnrated
reagent derivatized residueUnrated
2-((2R)-2-amino-2carboxyethyl)sulfinyl-3-((2S)-2-amino-2-carboxyethyl)-1H-indoleUnrated 2'-(S-L-cysteinyl)-6'-hydroxy-L-tryptophan sulfoxideUnrated 6'-hydroxy-S-oxo-tryptathionineUnrated CROSSLNK 2'-cysteinyl-6'-hydroxytryptophan sulfoxide (Trp-Cys)Unrated
tBocUnrated t-butyloxycarbonylUnrated
glutamate 5-glycerol esterUnrated
2-(2-aminosuccinimidyl)pentanedioic acidUnrated 2-(2-aminosuccinimidyl)pentanedioic acid (Asn)Unrated (4S)-4-[(3S)-3-amino-2,5-dioxopyrrolidin-1-yl]-5-oxopentanoic acidUnrated aspartimide glutamic acidUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ114KUnrated iTRAQ4plex-114 reporter+balance reagent N6-acylated lysineUnrated
(2S)-2-amino-4-([(1S,2R)-1-amino-1-carboxypropan-2-yl]oxy)-4-oxobutanoic acidUnrated (2S,3R)-2-amino-3-([(4S)-3-amino-3-carboxypropanoyl]oxy)propanoic acidUnrated O3-(isoaspartyl)-threonineUnrated O(beta)-(beta-aspartyl)threonineUnrated O-(L-isoaspartyl)-L-threonineUnrated
3,5-Diiodination (of Tyrosine)Unrated diiodinated tyrosineUnrated diiodinationyUnrated I2TyrUnrated
(2S)-2-aminopentanediamideUnrated amidated L-glutamineUnrated GlnNUnrated glutaminamideUnrated L-glutamine amideUnrated MOD_RES Glutamine amideUnrated
(2S,4S)-2-amino-5-hydroxy-4-methylpentanoic acidUnrated (2S,4S)-5-hydroxyleucineUnrated
(2S)-2-amino-3-([(Z)-2-aminoethenyl]sulfanyl)propanoic acidUnrated CROSSLNK S-(2-aminovinyl)-D-cysteine (Cys-Cys)Unrated S-(2-aminovinyl)-D-cysteineUnrated S-(2-aminovinyl)-D-cysteine (Cys-Cys)Unrated (S,Z)-S-(2-aminovinyl)cysteineUnrated
(2S,3R)-2-amino-3-(2-acetamido-2-deoxy-beta-D-glucopyranosyloxy)butanoic acidUnrated CARBOHYD O-linked (GlcNAc) threonineUnrated CARBOHYD O-linked (HexNAc)Unrated O-(2-acetylamino-2-deoxy-beta-D-glucopyranosyl)-L-threonineUnrated O3-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)-L-threonineUnrated O3-(N-acetylglucosaminyl)threonineUnrated OGlcNAcThrUnrated O-glycosylthreonineUnrated O-(N-acetylamino)glucosyl-L-threonineUnrated O-(N-acetylglucosaminyl)-L-threonineUnrated O-threonyl-beta-N-acetylglucosaminideUnrated
S-(2-hydroxyethyl)cysteineUnrated
Michael addition of t-butyl hydroxylated BHT (BHTOH) to C, H or KUnrated
AcPheUnrated N-acetyl-L-phenylalanineUnrated
Gygi ICAT(TM) d8 modified cysteineUnrated
2'BrPheUnrated L-2'-bromophenylalanineUnrated L-o-bromination of Phe with 79BrUnrated o-bromophenylalanineUnrated ortho-bromophenylalanineUnrated (S)-2-amino-3-(2-bromophenyl)propanoic acidUnrated
(4-methylpiperazin-1-yl)acetylUnrated iTRAQ8plex-114 reporter+balance reagent N'-acylated histidineUnrated
cis-peptidyl-L-prolineUnrated
N-iodoacetyl, p-chlorobenzyl-13C6-glucamineUnrated
(2S)-2-(dimethylamino)propanoic acidUnrated MOD_RES N,N-dimethylserineUnrated N,N-dimethyl-L-serineUnrated N,N-dimethylserineUnrated
(2S)-2-amino-3-(1H-imidazol-4-yl)propanamideUnrated amidated L-histidineUnrated HisNUnrated histidinamideUnrated L-histidine amideUnrated MOD_RES Histidine amideUnrated
2-pyrrolidone-5-carboxylic acid (Pro)Unrated PyrGlu(Pro)Unrated pyroglutamicpUnrated
(2S,4R)-4-[2-acetamido-2-deoxy-alpha-D-hexopyranosyloxy]pyrrolidine-2-carboxylic acidUnrated 4-[(2-N-acetylamino)-alpha-D-hexopyranosyl]oxyprolineUnrated 4-(N-acetylhexosaminyloxy)prolineUnrated alpha-2-(N-acetylamino)hexopyranosyl-4-hydroxyprolineUnrated O4-glycosyl-hydroxyprolineUnrated O4HexNAcHyProUnrated O4-(N-acetylamino)hexosyl-L-hydroxyprolineUnrated
2-(2-aminosuccinimidyl)-3-sulfanylpropanoic acidUnrated 2-(2-aminosuccinimidyl)-3-sulfanylpropanoic acid (Asp)Unrated (2R)-2-[(3S)-3-amino-2,5-dioxopyrrolidin-1-yl]-3-sulfanylpropanoic acidUnrated aspartimide cysteineUnrated
alpha-amino propanoylated residueUnrated
OGlycoResUnrated O-glycosylated residueUnrated
alpha-amino acetylated residueUnrated N2AcResUnrated ntermacetylUnrated

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