Go terms map to parent GO term: GO:0006464   cellular protein modification process
GOID
Link to GO
 Functional Category Description Protein Count
link to
protein list
GO:0046777 protein autophosphorylation The phosphorylation by a protein of one or more of its own amino acid residues, or residues on an identical protein. 1911
GO:0016567 protein ubiquitination The process in which one or more ubiquitin groups are added to a protein. 521
GO:0006499 N-terminal protein myristoylation The covalent attachment of a myristoyl group to the N-terminal amino acid residue of a protein. 487
GO:0006468 protein phosphorylation The process of introducing a phosphate group on to a protein. 480
GO:0018105 peptidyl-serine phosphorylation The phosphorylation of peptidyl-serine to form peptidyl-O-phospho-L-serine. 419
GO:0006487 protein N-linked glycosylation A protein glycosylation process in which a carbohydrate or carbohydrate derivative unit is added to a protein via the N4 atom of peptidyl-asparagine, the omega-N of arginine, or the N1' atom peptidyl-tryptophan. 261
GO:0051567 histone H3-K9 methylation The modification of histone H3 by addition of a methyl group to lysine at position 9 of the histone. 241
GO:0006470 protein dephosphorylation The process of removing one or more phosphoric residues from a protein. 238
GO:0006486 protein glycosylation A protein modification process that results in the addition of a carbohydrate or carbohydrate derivative unit to a protein amino acid, e.g. the addition of glycan chains to proteins. 230
GO:0043687 post-translational protein modification The process of covalently altering one or more amino acids in a protein after the protein has been completely translated and released from the ribosome. 222
GO:0042787 protein ubiquitination involved in ubiquitin-dependent protein catabolic process The process in which a ubiquitin group, or multiple groups, are covalently attached to the target protein, thereby initiating the degradation of that protein. 207
GO:0010388 cullin deneddylation The modification of cullins by removal of ubiquitin-like protein NEDD8 (RUB1). 202
GO:0051865 protein autoubiquitination The ubiquitination by a protein of one or more of its own amino acid residues, or residues on an identical protein. Ubiquitination occurs on the lysine residue by formation of an isopeptide crosslink. 191
GO:0016926 protein desumoylation The process in which a SUMO protein (small ubiquitin-related modifier) is cleaved from its target protein. 167
GO:0000209 protein polyubiquitination Addition of multiple ubiquitin groups to a protein, forming a ubiquitin chain. 155
GO:0018107 peptidyl-threonine phosphorylation The phosphorylation of peptidyl-threonine to form peptidyl-O-phospho-L-threonine. 154
GO:0016579 protein deubiquitination The removal of one or more ubiquitin groups from a protein. 154
GO:0016572 histone phosphorylation The modification of histones by addition of phosphate groups. 147
GO:0070936 protein K48-linked ubiquitination A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 48 of the ubiquitin monomers, is added to a protein. K48-linked ubiquitination targets the substrate protein for degradation. 137
GO:0070534 protein K63-linked ubiquitination A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is added to a protein. K63-linked ubiquitination does not target the substrate protein for degradation, but is involved in several pathways, notably as a signal to promote error-free DNA postreplication repair. 132
GO:0070979 protein K11-linked ubiquitination A protein ubiquitination process in which ubiquitin monomers are attached to a protein, and then ubiquitin polymers are formed by linkages between lysine residues at position 11 of the ubiquitin monomers. K11-linked polyubiquitination targets the substrate protein for degradation. The anaphase-promoting complex promotes the degradation of mitotic regulators by assembling K11-linked polyubiquitin chains. 127
GO:0018279 protein N-linked glycosylation via asparagine The glycosylation of protein via the N4 atom of peptidyl-asparagine forming N4-glycosyl-L-asparagine; the most common form is N-acetylglucosaminyl asparagine; N-acetylgalactosaminyl asparagine and N4 glucosyl asparagine also occur. This modification typically occurs in extracellular peptides with an N-X-(ST) motif. Partial modification has been observed to occur with cysteine, rather than serine or threonine, in the third position; secondary structure features are important, and proline in the second or fourth positions inhibits modification. 107
GO:0000413 protein peptidyl-prolyl isomerization The modification of a protein by cis-trans isomerization of a proline residue. 106
GO:0034968 histone lysine methylation The modification of a histone by addition of a methyl group to a lysine residue. 92
GO:0035970 peptidyl-threonine dephosphorylation The removal of phosphoric residues from peptidyl-O-phospho-L-threonine to form peptidyl-threonine. 92
GO:0006513 protein monoubiquitination Addition of a single ubiquitin group to a protein. 89
GO:0033523 histone H2B ubiquitination The modification of histone H2B by addition of ubiquitin groups. 87
GO:0010390 histone monoubiquitination The modification of histones by addition of a single ubiquitin group. 83
GO:0044314 protein K27-linked ubiquitination A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 27 of the ubiquitin monomers, is added to a protein. 82
GO:0035519 protein K29-linked ubiquitination A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 29 of the ubiquitin monomers, is added to a protein. K29-linked ubiquitination targets the substrate protein for degradation. 82
GO:0085020 protein K6-linked ubiquitination A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 6 of the ubiquitin monomers, is added to a protein. K6-linked ubiquitination is involved in DNA repair. 82
GO:0033522 histone H2A ubiquitination The modification of histone H2A by addition of one or more ubiquitin groups. 82
GO:0032020 ISG15-protein conjugation The covalent addition to a protein of ISG15, a ubiquitin-like protein. 80
GO:0016573 histone acetylation The modification of a histone by the addition of an acetyl group. 77
GO:0016575 histone deacetylation The modification of histones by removal of acetyl groups. 74
GO:0070816 phosphorylation of RNA polymerase II C-terminal domain The process of introducing a phosphate group on to an amino acid residue in the C-terminal domain of RNA polymerase II. Typically, this occurs during the transcription cycle and results in production of an RNA polymerase II enzyme where the carboxy-terminal domain (CTD) of the largest subunit is extensively phosphorylated, often referred to as hyperphosphorylated or the II(0) form. Specific types of phosphorylation within the CTD are usually associated with specific regions of genes, though there are exceptions. The phosphorylation state regulates the association of specific complexes such as the capping enzyme or 3'-RNA processing machinery to the elongating RNA polymerase complex. 73
GO:0016571 histone methylation The modification of histones by addition of methyl groups. 65
GO:0038083 peptidyl-tyrosine autophosphorylation The phosphorylation by a protein of one or more of its own tyrosine amino acid residues, or a tyrosine residue on an identical protein. 64
GO:0016925 protein sumoylation The process in which a SUMO protein (small ubiquitin-related modifier) is conjugated to a target protein via an isopeptide bond between the carboxyl terminus of SUMO with an epsilon-amino group of a lysine residue of the target protein. 64
GO:0018193 peptidyl-amino acid modification The alteration of an amino acid residue in a peptide. 61
GO:0018108 peptidyl-tyrosine phosphorylation The phosphorylation of peptidyl-tyrosine to form peptidyl-O4'-phospho-L-tyrosine. 56
GO:0043966 histone H3 acetylation The modification of histone H3 by the addition of an acetyl group. 51
GO:0045116 protein neddylation Covalent attachment of the ubiquitin-like protein NEDD8 (RUB1) to another protein. 48
GO:0018125 peptidyl-cysteine methylation The methylation of peptidyl-cysteine to form peptidyl-S-methyl-L-cysteine. 46
GO:0006471 protein ADP-ribosylation The transfer, from NAD, of ADP-ribose to protein amino acids. 44
GO:0006475 internal protein amino acid acetylation The addition of an acetyl group to a non-terminal amino acid in a protein. 43
GO:0033136 serine phosphorylation of STAT3 protein The process of introducing a phosphate group to a serine residue of the STAT3 protein. 43
GO:0070076 histone lysine demethylation The modification of a histone by the removal of a methyl group from a lysine residue. 40
GO:0051568 histone H3-K4 methylation The modification of histone H3 by addition of a methyl group to lysine at position 4 of the histone. 39
GO:0006479 protein methylation The addition of a methyl group to a protein amino acid. A methyl group is derived from methane by the removal of a hydrogen atom. 37
GO:0031365 N-terminal protein amino acid modification The alteration of the N-terminal amino acid residue in a protein. 34
GO:0043967 histone H4 acetylation The modification of histone H4 by the addition of an acetyl group. 32
GO:0010731 protein glutathionylation The protein modification process in which a glutathione molecule is added to a protein amino acid through a disulfide linkage. 31
GO:0018119 peptidyl-cysteine S-nitrosylation The covalent addition of a nitric oxide (NO) group to the sulphur (S) atom of a cysteine residue in a protein, to form peptidyl-S-nitrosyl-L-cysteine. 30
GO:0018401 peptidyl-proline hydroxylation to 4-hydroxy-L-proline The modification of peptidyl-proline to form 4-hydroxy-L-proline; catalyzed by procollagen-proline,2-oxoglutarate-4-dioxygenase. 30
GO:0035551 protein initiator methionine removal involved in protein maturation Removal of the initiating methionine or formylmethionine residue from a protein that contributes to protein maturation, the attainment of the full functional capacity of a protein. 29
GO:0007258 JUN phosphorylation The process of introducing a phosphate group into a JUN protein. 28
GO:0080058 protein deglutathionylation The protein modification process in which a glutathione molecule is removed from a protein amino acid by breaking a disulfide linkage. 28
GO:0018106 peptidyl-histidine phosphorylation The phosphorylation of peptidyl-histidine to form peptidyl-1'-phospho-L-histidine (otherwise known as tau-phosphohistidine, tele-phosphohistidine) or peptidyl-3'-phospho-L-histidine (otherwise known as pi-phosphohistidine, pros-phosphohistidine). 27
GO:0016570 histone modification The covalent alteration of one or more amino acid residues within a histone protein. 27
GO:0018345 protein palmitoylation The covalent attachment of a palmitoyl group to a protein. 26
GO:0033169 histone H3-K9 demethylation The modification of histone H3 by the removal of a methyl group from lysine at position 9 of the histone. 26
GO:0018272 protein-pyridoxal-5-phosphate linkage via peptidyl-N6-pyridoxal phosphate-L-lysine The modification of peptidyl-lysine to form N6-pyridoxal phosphate-L-lysine. 26
GO:0070262 peptidyl-serine dephosphorylation The removal of phosphoric residues from peptidyl-O-phospho-L-serine to form peptidyl-serine. 26
GO:0035335 peptidyl-tyrosine dephosphorylation The removal of phosphoric residues from peptidyl-O-phospho-tyrosine to form peptidyl-tyrosine. 25
GO:0035606 peptidyl-cysteine S-trans-nitrosylation Transfer of a nitric oxide (NO) group from one cysteine residue to another. 22
GO:0006975 DNA damage induced protein phosphorylation The widespread phosphorylation of various molecules, triggering many downstream processes, that occurs in response to the detection of DNA damage. 22
GO:0016576 histone dephosphorylation The modification of histones by removal of phosphate groups. 21
GO:0070932 histone H3 deacetylation The modification of histone H3 by the removal of one or more acetyl groups. 21
GO:0018022 peptidyl-lysine methylation The methylation of peptidyl-lysine to form either the mono-, di- or trimethylated derivative. 20
GO:0018206 peptidyl-methionine modification The modification of peptidyl-methionine. 20
GO:0070933 histone H4 deacetylation The modification of histone H4 by the removal of one or more acetyl groups. 19
GO:0006473 protein acetylation The addition of an acetyl group to a protein amino acid. An acetyl group is CH3CO-, derived from acetic [ethanoic] acid. 19
GO:0043988 histone H3-S28 phosphorylation The modification of histone H3 by the addition of an phosphate group to a serine residue at position 28 of the histone. 18
GO:0043982 histone H4-K8 acetylation The modification of histone H4 by the addition of an acetyl group to a lysine residue at position 8 of the histone. 17
GO:0043984 histone H4-K16 acetylation The modification of histone H4 by the addition of an acetyl group to a lysine residue at position 16 of the histone. 17
GO:0018149 peptide cross-linking The formation of a covalent cross-link between or within protein chains. 17
GO:0043981 histone H4-K5 acetylation The modification of histone H4 by the addition of an acetyl group to a lysine residue at position 5 of the histone. 17
GO:0018393 internal peptidyl-lysine acetylation The addition of an acetyl group to a non-terminal lysine residue in a protein. 16
GO:0071108 protein K48-linked deubiquitination A protein deubiquitination process in which a K48-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 48 of the ubiquitin monomers, is removed from a protein. 15
GO:0070536 protein K63-linked deubiquitination A protein deubiquitination process in which a K63-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is removed from a protein. 15
GO:0017183 peptidyl-diphthamide biosynthetic process from peptidyl-histidine The modification of peptidyl-histidine to 2'-(3-carboxamido-3-(trimethylammonio)propyl)-L-histidine, known as diphthamide, found in translation elongation factor eEF-2. 14
GO:0016578 histone deubiquitination The modification of histones by removal of ubiquitin groups. 13
GO:0008612 peptidyl-lysine modification to hypusine The modification of peptidyl-lysine to form hypusine, N6-(4-amino-2-hydroxybutyl)-L-lysine. 13
GO:0042125 protein galactosylation The addition of a galactose molecule to a protein amino acid. 12
GO:0043968 histone H2A acetylation The modification of histone H2A by the addition of an acetyl group. 12
GO:0009249 protein lipoylation The addition of a lipoyl group to an amino acid residue in a protein. 12
GO:0000338 protein deneddylation The removal of a ubiquitin-like protein of the NEDD8 type from a protein. 12
GO:0043985 histone H4-R3 methylation The modification of histone H4 by addition of a methyl group to arginine at position 3 of the histone. 12
GO:0043987 histone H3-S10 phosphorylation The modification of histone H3 by the addition of an phosphate group to a serine residue at position 10 of the histone. 12
GO:0006506 GPI anchor biosynthetic process The chemical reactions and pathways resulting in the formation of a glycosylphosphatidylinositol (GPI) anchor that attaches some membrane proteins to the lipid bilayer of the cell membrane. The phosphatidylinositol group is linked via the C-6 hydroxyl residue of inositol to a carbohydrate chain which is itself linked to the protein via an ethanolamine phosphate group, its amino group forming an amide linkage with the C-terminal carboxyl of the protein. Some GPI anchors have variants on this canonical linkage. 12
GO:0018298 protein-chromophore linkage The covalent or noncovalent attachment of a chromophore to a protein. 11
GO:0019919 peptidyl-arginine methylation, to asymmetrical-dimethyl arginine The process of methylation of peptidyl-arginine to form peptidyl-N(omega),N(omega)-dimethyl-L-arginine. 11
GO:0018344 protein geranylgeranylation The covalent attachment of a geranylgeranyl group to a protein. 11
GO:0034970 histone H3-R2 methylation The modification of histone H3 by addition of a methyl group to arginine at position 2 of the histone. 11
GO:2000775 histone H3-S10 phosphorylation involved in chromosome condensation Any histone H3-S10 phosphorylation that is involved in chromosome condensation. 10
GO:0006491 N-glycan processing The conversion of N-linked glycan (N = nitrogen) structures from the initially transferred oligosaccharide to a mature form, by the actions of glycosidases and glycosyltransferases. The early processing steps are conserved and play roles in glycoprotein folding and trafficking. 10
GO:0080182 histone H3-K4 trimethylation The modification of histone H3 by addition of three methyl groups to lysine at position 4 of the histone. 10
GO:0017006 protein-tetrapyrrole linkage The covalent linking of a tetrapyrrole to a protein. 9
GO:0071894 histone H2B conserved C-terminal lysine ubiquitination A histone ubiquitination process in which a ubiquitin monomer is added to a conserved lysine residue in the C-terminus of histone H2B. The conserved lysine residue is K119 in fission yeast, K123 in budding yeast, or K120 in mammals. 9
GO:0034729 histone H3-K79 methylation The modification of histone H3 by addition of a methyl group to lysine at position 79 of the histone. 9
GO:0018023 peptidyl-lysine trimethylation The methylation of peptidyl-lysine to form peptidyl-N6,N6,N6-trimethyl-L-lysine. 9
GO:0002084 protein depalmitoylation The removal of palymitoyl groups from a lipoprotein. 8
GO:0018343 protein farnesylation The covalent attachment of a farnesyl group to a protein. 8
GO:0034720 histone H3-K4 demethylation The modification of histone H3 by the removal of a methyl group from lysine at position 4 of the histone. 8
GO:0035518 histone H2A monoubiquitination The modification of histone H2A by addition of a single ubiquitin group. 8
GO:0006476 protein deacetylation The removal of an acetyl group from a protein amino acid. An acetyl group is CH3CO-, derived from acetic [ethanoic] acid. 8
GO:0032446 protein modification by small protein conjugation A protein modification process in which one or more groups of a small protein, such as ubiquitin or a ubiquitin-like protein, are covalently attached to a target protein. 8
GO:0006480 N-terminal protein amino acid methylation The methylation of the N-terminal amino acid of a protein. 7
GO:0006481 C-terminal protein methylation The methylation of the C-terminal amino acid of a protein. 7
GO:0018258 protein O-linked glycosylation via hydroxyproline The glycosylation of proteins via 04 atom of hydroxyproline to form O4-glycosyl-L-hydroxyproline; the most common form is arabinofuranosyl-4-proline. 7
GO:0071569 protein ufmylation Covalent attachment of the ubiquitin-like protein UFM1 to another protein. 6
GO:0006497 protein lipidation The covalent attachment of lipid groups to an amino acid in a protein. 6
GO:0017196 N-terminal peptidyl-methionine acetylation The acetylation of the N-terminal methionine of proteins to form the derivative N-acetyl-L-methionine. 6
GO:0090042 tubulin deacetylation The removal of an acetyl group from tubulin. An acetyl group is CH3CO-, derived from acetic [ethanoic] acid. 6
GO:0006501 C-terminal protein lipidation The covalent attachment of a lipid group to the carboxy terminus of a protein. 6
GO:0070734 histone H3-K27 methylation The modification of histone H3 by addition of a methyl group to lysine at position 27 of the histone. 5
GO:0006517 protein deglycosylation The removal of sugar residues from a glycosylated protein. 5
GO:0018342 protein prenylation The covalent attachment of a prenyl group to a protein; geranyl, farnesyl, or geranylgeranyl groups may be added. 5
GO:0016254 preassembly of GPI anchor in ER membrane The stepwise addition of the components of the GPI anchor on to phosphatidylinositol lipids in the endoplasmic reticulum membrane. 5
GO:0035407 histone H3-T11 phosphorylation The modification of histone H3 by the addition of an phosphate group to a threonine residue at position 11 of the histone. 5
GO:0036290 protein trans-autophosphorylation The phosphorylation by a protein of a residue on an identical protein. For example, phosphorylation by the other kinase within a homodimer. 4
GO:0006474 N-terminal protein amino acid acetylation The acetylation of the N-terminal amino acid of proteins. 4
GO:0018283 iron incorporation into metallo-sulfur cluster The incorporation of iron into a metallo-sulfur cluster. 4
GO:0035404 histone-serine phosphorylation The modification of histones by addition of a phosphate group to a serine residue. 4
GO:0006493 protein O-linked glycosylation A protein glycosylation process in which a carbohydrate or carbohydrate derivative unit is added to a protein via the hydroxyl group of peptidyl-serine, peptidyl-threonine, peptidyl-hydroxylysine, or peptidyl-hydroxyproline, or via the phenol group of peptidyl-tyrosine, forming an O-glycan. 4
GO:0018315 molybdenum incorporation into molybdenum-molybdopterin complex The incorporation of molybdenum into a molybdenum-molybdopterin complex. 4
GO:0018197 peptidyl-aspartic acid modification The modification of peptidyl-aspartic acid. 4
GO:0035269 protein O-linked mannosylation The transfer of mannose from dolichyl activated mannose to the hydroxyl group of a seryl or threonyl residue of a protein acceptor molecule, to form an O-linked protein-sugar linkage. 4
GO:0070940 dephosphorylation of RNA polymerase II C-terminal domain The process of removing a phosphate group from an amino acid residue in the C-terminal domain of RNA polymerase II. Some dephosphorylation occurs during transcription while some may occur after the enzyme is released from the template in order to prepare it for the beginning of the transcription cycle again. RNA polymerase II with little or no phosphorylation is referred to as the hypophosphorylated or II(A) form. 3
GO:0032447 protein urmylation Covalent attachment of the ubiquitin-like protein URM1 to another protein. 3
GO:0034971 histone H3-R17 methylation The modification of histone H3 by addition of a methyl group to arginine at position 17 of the histone. 3
GO:0043686 co-translational protein modification The process of covalently altering one or more amino acids in a protein after translation has begun but before the protein has been released from the ribosome. 3
GO:0043983 histone H4-K12 acetylation The modification of histone H4 by the addition of an acetyl group to a lysine residue at position 12 of the histone. 3
GO:0017186 peptidyl-pyroglutamic acid biosynthetic process, using glutaminyl-peptide cyclotransferase The chemical reactions and pathways resulting in the formation of peptidyl-pyroglutamic acid, catalyzed by glutaminyl-peptide cyclotransferase. 3
GO:0034972 histone H3-R26 methylation The modification of histone H3 by addition of a methyl group to arginine at position 26 of the histone. 3
GO:0016574 histone ubiquitination The modification of histones by addition of ubiquitin groups. 3
GO:0018027 peptidyl-lysine dimethylation The methylation of peptidyl-lysine to form peptidyl-N6,N6-dimethyl-L-lysine. 3
GO:0018192 enzyme active site formation via L-cysteine persulfide The modification of peptidyl-cysteine to form peptidyl-L-cysteine persulfide. A persulfurated cysteine promotes active site reactivity in Azotobacter vinelandii Rhodanese. 3
GO:0018012 N-terminal peptidyl-alanine trimethylation The trimethylation of the N-terminal alanine of proteins to form the derivative peptidyl-N,N,N-trimethyl-L-alanine. 2
GO:0035573 N-terminal peptidyl-serine trimethylation The trimethylation of the N-terminal serine of proteins to form the derivative N,N,N-trimethylserine. 2
GO:0016255 attachment of GPI anchor to protein A transamidation reaction that results in the cleavage of the polypeptide chain and the concomitant transfer of the GPI anchor to the newly formed carboxy-terminal amino acid of the anchored protein. The cleaved C-terminal contains the C-terminal GPI signal sequence of the newly synthesized polypeptide chain. 2
GO:0018205 peptidyl-lysine modification The modification of peptidyl-lysine. 2
GO:0002030 inhibitory G-protein coupled receptor phosphorylation The process that inhibits the signaling function of a G-protein coupled receptor by addition of a phosphate group to its third intracellular loop consensus site. 2
GO:1900018 phosphorylation of RNA polymerase II C-terminal domain serine 5 residues involved in recruitment of mRNA capping enzyme to RNA polymerase II holoenzyme complex Any phosphorylation of RNA polymerase II C-terminal domain serine 5 residues that is involved in recruitment of mRNA capping enzyme to RNA polymerase II holoenzyme complex. 2
GO:0018076 N-terminal peptidyl-lysine acetylation The acetylation of the N-terminal lysine of proteins. 2
GO:0035572 N-terminal peptidyl-serine dimethylation The dimethylation of the N-terminal serine of proteins to form the derivative N,N-dimethylserine. 2
GO:0018016 N-terminal peptidyl-proline dimethylation The methylation of the N-terminal proline of proteins to form the derivative N,N-dimethyl-L-proline. 2
GO:0035522 monoubiquitinated histone H2A deubiquitination The removal of the ubiquitin group from a monoubiquitinated histone H2A protein. 2
GO:0018364 peptidyl-glutamine methylation The addition of a methyl group to a glutamine residue in a protein. 1
GO:0019918 peptidyl-arginine methylation, to symmetrical-dimethyl arginine The process of methylation of peptidyl-arginine to form peptidyl-N(omega),N'(omega)-dimethyl-L-arginine. 1
GO:0035246 peptidyl-arginine N-methylation The addition of a methyl group onto a nitrogen atom of an arginine residue in a protein. 1
GO:0043543 protein acylation The addition of an acyl group, any group or radical of the form RCO- where R is an organic group, to a protein amino acid. 1
GO:0044524 protein sulfhydration The modification of a protein amino acid by the addition of sulfur. 1
GO:0042503 tyrosine phosphorylation of Stat3 protein The process of introducing a phosphate group to a tyrosine residue of a Stat3 protein. 1
GO:0018316 peptide cross-linking via L-cystine The oxidation of two peptidyl-cysteine residues to form a peptidyl-L-cystine (dicysteine) in which segments of peptide chain are linked by a disulfide bond; the cross-link may be between different or the same peptide chain. 1
GO:0018026 peptidyl-lysine monomethylation The methylation of peptidyl-lysine to form peptidyl-N6-methyl-L-lysine. 1
GO:0007252 I-kappaB phosphorylation The process of introducing a phosphate group into an inhibitor of kappa B (I-kappaB) protein. Phosphorylation of I-kappaB targets I-kappaB for ubiquitination and proteasomal degradation, thus releasing bound NF-kappaB dimers, which can translocate to the nucleus to bind DNA and regulate transcription. 1
GO:0072355 histone H3-T3 phosphorylation The modification of histone H3 by the addition of an phosphate group to a threonine residue at position 3 of the histone. 1
GO:0070544 histone H3-K36 demethylation The modification of histone H3 by the removal of a methyl group from lysine at position 36 of the histone. 1
GO:0042506 tyrosine phosphorylation of Stat5 protein The process of introducing a phosphate group to a tyrosine residue of a Stat5 protein. 1
GO:0018160 peptidyl-pyrromethane cofactor linkage The covalent binding of a pyrromethane (dipyrrin) cofactor to protein via the sulfur atom of cysteine forming dipyrrolylmethanemethyl-L-cysteine. 1
GO:0019988 charged-tRNA amino acid modification The covalent alteration of an amino acid charged on a tRNA before it is incorporated into a protein, as in N-formylmethionine, selenocysteine or pyrrolysine. 1
GO:0018208 peptidyl-proline modification The modification of peptidyl-proline. 1
GO:0034421 post-translational protein acetylation The addition of an acetyl group to one or more amino acids in a protein, occurring after the protein has been completely translated and released from the ribosome. 1
GO:0006482 protein demethylation The removal of a methyl group, from a protein amino acid. A methyl group is derived from methane by the removal of a hydrogen atom. 1
GO:0010452 histone H3-K36 methylation The modification of histone H3 by addition of a methyl group to lysine at position 36 of the histone. 1
GO:0070647 protein modification by small protein conjugation or removal A protein modification process in which one or more groups of a small protein, such as ubiquitin or a ubiquitin-like protein, are covalently attached to or removed from a target protein. 1
GO:0000412 histone peptidyl-prolyl isomerization The modification of a histone by cis-trans isomerization of a proline residue. 1
GO:0018216 peptidyl-arginine methylation The addition of a methyl group to an arginine residue in a protein. 1
GO:0017009 protein-phycocyanobilin linkage The linkage of the chromophore phycocyanobilin to phycocyanin or allophycocyanin. 1
GO:0018249 protein dehydration The removal of a water group from a protein amino acid. 1
GO:0034969 histone arginine methylation The modification of a histone by addition of a methyl group to an arginine residue. 1
GO:0035520 monoubiquitinated protein deubiquitination The removal of the ubiquitin group from a monoubiquitinated protein. 1
GO:0018063 cytochrome c-heme linkage The linkage of cytochromes and other heme proteins to heme. 1