LiteFold/GO huggingface dataset:
obsolete molybdenum incorporation via L-selenocysteinyl molybdenum bis(molybdopterin guanine dinucleotide) (GO:0018147)
Namespace: biological_process
Definition: OBSOLETE. The incorporation of molybdenum into a protein via L-selenocysteinyl molybdenum bis(molybdopterin guanine dinucleotide).
Comment: This term was obsoleted because it represents a molecular function.
obsolete RNA-protein covalent cross-linking via peptidyl-tyrosine (GO:0018148)
Namespace: biological_process
Definition: OBSOLETE. The formation of a covalent cross-link between RNA and a peptidyl-tyrosine residue by the formation of O4'-(phospho-5'-RNA)-L-tyrosine.
Comment: This term was obsoleted because it represents a molecular function.
peptide cross-linking (GO:0018149)
Namespace: biological_process
Definition: The formation of a covalent cross-link between or within protein chains.
obsolete peptide cross-linking via 3-(3'-L-histidyl)-L-tyrosine (GO:0018150)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-histidine and peptidyl-tyrosine to form a 3-(3'-L-histidyl)-L-tyrosine protein cross-link.
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined in RESID.
obsolete peptide cross-linking via L-histidyl-L-tyrosine (GO:0018151)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-histidine and peptidyl-tyrosine to form a protein cross-link.
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptide cross-linking via 3'-(1'-L-histidyl)-L-tyrosine (GO:0018152)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-histidine and peptidyl-tyrosine to form a 3'-(1'-L-histidyl)-L-tyrosine protein cross-link.
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined in RESID.
isopeptide cross-linking via N6-(L-isoglutamyl)-L-lysine (GO:0018153)
Namespace: biological_process
Definition: The formation of an isopeptide cross-link between peptidyl-lysine and peptidyl-glutamine to produce N6-(L-isoglutamyl)-L-lysine.
obsolete peptide cross-linking via (2R,6R)-lanthionine (GO:0018154)
Namespace: biological_process
Definition: OBSOLETE. The formation of a protein-protein cross-link between peptidyl-serine and peptidyl-cysteine by the synthesis of (2R,6R)-lanthionine (L-lanthionine).
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined in RESID.
obsolete peptide cross-linking via sn-(2S,6R)-lanthionine (GO:0018155)
Namespace: biological_process
Definition: OBSOLETE. The formation of a protein-protein cross-link between peptidyl-serine and peptidyl-cysteine by the synthesis of sn-(2S,6R)-lanthionine (meso-lanthione).
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined in RESID.
obsolete peptide cross-linking via (2S,3S,6R)-3-methyl-lanthionine (GO:0018156)
Namespace: biological_process
Definition: OBSOLETE. The formation of a protein-protein cross-link between peptidyl-threonine and peptidyl-cysteine by the synthesis of (2S,3S,6R)-3-methyl-lanthionine (3-methyl-L-lanthionine).
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined.
obsolete peptide cross-linking via an oxazole or thiazole (GO:0018157)
Namespace: biological_process
Definition: OBSOLETE. The chemical reactions and pathways resulting in the formation of a peptidyl serine-peptidyl glycine, or peptidyl cysteine-peptidyl glycine cross-link by the condensation of the serine hydroxyl or cysteine thiol with the carbonyl of the preceding residue and alpha-beta dehydrogenation.
Synonyms: peptide heterocycle biosynthesis; peptide heterocycle biosynthetic process; peptide heterocycle formation; peptide heterocycle synthesis
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined.
protein oxidation (GO:0018158)
Namespace: biological_process
Definition: The modification of a protein amino acid by oxidation.
Synonyms: protein amino acid oxidation
obsolete peptidyl-methionine oxidation (GO:0018159)
Namespace: biological_process
Definition: OBSOLETE. The oxidation of peptidyl-L-methionine to peptidyl-L-methionine sulfone.
Comment: This term was obsoleted because it represents a molecular function.
peptidyl-pyrromethane cofactor linkage (GO:0018160)
Namespace: biological_process
Definition: The covalent binding of a pyrromethane (dipyrrin) cofactor to protein via the sulfur atom of cysteine forming dipyrrolylmethanemethyl-L-cysteine.
Synonyms: dipyrromethane cofactor binding; peptidyl-pyrromethane cofactor linkage via dipyrrolylmethanemethyl-L-cysteine
obsolete dipyrrin biosynthetic process (GO:0018161)
Namespace: biological_process
Definition: OBSOLETE. The chemical reactions and pathways resulting in the formation of dipyrrins (pyrromethanes), compounds containing two pyrrole rings linked through a methine, -CH=, group.
Synonyms: dipyrrin anabolism; dipyrrin biosynthesis; dipyrrin formation; dipyrrin synthesis; dipyrromethane biosynthesis; dipyrromethane biosynthetic process
Comment: This term was obsoleted because it is not a physiologically relevant compound.
obsolete peptide cross-linking via S-(2-aminovinyl)-3-methyl-D-cysteine (GO:0018162)
Namespace: biological_process
Definition: OBSOLETE. The formation of a cross-link between peptidyl-cysteine and peptidyl-threonine via the formation of S-(2-aminovinyl)-3-methyl-D-cysteine.
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined in RESID.
obsolete protein-DNA covalent cross-linking via the 5'-end to peptidyl-tyrosine (GO:0018163)
Namespace: biological_process
Definition: OBSOLETE. The formation of a covalent cross-link between DNA and a peptidyl-tyrosine residue by the formation of O4'-(phospho-5'-DNA)-L-tyrosine.
Synonyms: DNA-protein covalent cross-linking via the 5' end to peptidyl-tyrosine
Comment: The reason for obsoletion is that is not known to be catalyzed by any gene product.
obsolete protein-DNA covalent cross-linking via peptidyl-threonine (GO:0018164)
Namespace: biological_process
Definition: OBSOLETE. The formation of a covalent cross-link between DNA and a peptidyl-threonine residue by the formation of O-(phospho-5'-DNA)-L-threonine.
Synonyms: DNA-protein covalent cross-linking via peptidyl-threonine
Comment: The reason for obsoletion is that is not known to be catalyzed by any gene product.
obsolete peptidyl-tyrosine uridylylation (GO:0018165)
Namespace: biological_process
Definition: OBSOLETE. The uridylylation of peptidyl-tyrosine to form peptidyl-O4'-(phospho-5'-uridine)-L-tyrosine, found in glutamine synthetase.
Comment: This term was obsoleted because it represents a molecular function.
obsolete C-terminal protein-tyrosinylation (GO:0018166)
Namespace: biological_process
Definition: OBSOLETE. The ATP-dependent addition of a tyrosine residue to the C-terminus of a protein; typically the addition of tyrosine to the C-terminus of detyrosinated alpha-tubulin by the enzyme tubulin-tyrosine ligase.
Comment: This term was obsoleted because it is a molecular function represented as a biological process.
obsolete protein-phycoerythrobilin linkage via phycoerythrobilin-bis-L-cysteine (GO:0018167)
Namespace: biological_process
Definition: OBSOLETE. The linkage of the chromophore phycoerythrobilin to phycoerythrin via phycoerythrobilin-bis-L-cysteine.
Comment: This term was obsoleted because it represents a molecular function.
obsolete protein-phycoerythrobilin linkage via S-phycoerythrobilin-L-cysteine (GO:0018168)
Namespace: biological_process
Definition: OBSOLETE. The linkage of the chromophore phycoerythrobilin to phycoerythrocyanin via S-phycoerythrobilin-L-cysteine.
Comment: This term was obsoleted because it represents a molecular function.
ribosomal S6-glutamic acid ligase activity (GO:0018169)
Namespace: molecular_function
Definition: Catalysis of the posttranslational transfer of one or more glutamic acid residues to the C-terminus of ribosomal protein S6.
obsolete C-terminal peptidyl-polyglutamic acid amidation (GO:0018170)
Namespace: biological_process
Definition: OBSOLETE. The formation of a C-terminal peptidyl-polyglutamic acid to form a peptidyl-N-L-glutamyl-poly-L-glutamic acid C-terminus.
Comment: This term was obsoleted because it represents a molecular function.
peptidyl-cysteine oxidation (GO:0018171)
Namespace: biological_process
Definition: The oxidation of peptidyl-cysteine to peptidyl-L-cysteine sulfinic acid or peptidyl-L-cysteine sulfenic acid.
obsolete peptidyl-L-3',4',5'-trihydroxyphenylalanine biosynthetic process from peptidyl-tyrosine (GO:0018172)
Namespace: biological_process
Definition: OBSOLETE. The modification of protein tyrosine to peptidyl-L-3',4',5'-dihydroxyphenylalanine.
Synonyms: peptidyl-L-3',4',5'-trihydroxyphenylalanine anabolism from peptidyl-tyrosine; peptidyl-L-3',4',5'-trihydroxyphenylalanine formation from peptidyl-tyrosine; peptidyl-L-3',4',5'-trihydroxyphenylalanine synthesis from peptidyl-tyrosine
Comment: This term was obsoleted because it represents a molecular function.
peptidyl-1-thioglycine biosynthetic process from peptidyl-glycine (GO:0018173)
Namespace: biological_process
Definition: The chemical reactions and pathways resulting in the formation of peptidyl-1-thioglycine from other compounds, including peptidyl-glycine.
Synonyms: peptidyl-1-thioglycine anabolism from peptidyl-glycine; peptidyl-1-thioglycine formation from peptidyl-glycine; peptidyl-1-thioglycine synthesis from peptidyl-glycine
protein-heme P460 linkage (GO:0018174)
Namespace: biological_process
Definition: The linkage of protein to heme P460.
Synonyms: protein-haem P460 linkage
protein nucleotidylation (GO:0018175)
Namespace: biological_process
Definition: The addition of a nucleotide to a protein amino acid.
Synonyms: protein amino acid nucleotidylation
protein uridylylation (GO:0018177)
Namespace: biological_process
Definition: The addition of phospho-uridine to a protein amino acid.
Synonyms: protein amino acid uridylylation
obsolete peptidyl-threonine adenylylation (GO:0018178)
Namespace: biological_process
Definition: OBSOLETE. The adenylylation of peptidyl-threonine to form peptidyl-O-(phospho-5'-adenosine)-L-threonine.
Synonyms: peptidyl-threonine adenylation
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-cysteine desulfurization (GO:0018179)
Namespace: biological_process
Definition: OBSOLETE. The desulfurization of peptidyl-L-cysteine to yield L-alanine and elemental sulfur; peptidyl-L-cysteine persulfide is an intermediate.
Synonyms: peptidyl-cysteine desulfurization; peptidyl-cysteine desulphurization
Comment: This term was made obsolete because to does not correspond to a real process.
obsolete protein desulfurization (GO:0018180)
Namespace: biological_process
Definition: OBSOLETE. The removal of a sulfur group from a protein amino acid.
Synonyms: protein amino acid desulfurisation; protein amino acid desulfurization; protein amino acid desulphurisation; protein amino acid desulphurization
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-arginine C5-methylation (GO:0018181)
Namespace: biological_process
Definition: OBSOLETE. The methylation of peptidyl-arginine on the carbon 5 (C5) residue to form peptidyl-5-methyl-L-arginine.
Synonyms: peptidyl-arginine 5-methylation
Comment: This term was obsoleted because it represents a molecular function.
obsolete protein-heme linkage via 3'-L-histidine (GO:0018182)
Namespace: biological_process
Definition: OBSOLETE. The covalent linkage of heme and a protein via 3'-L-histidine (otherwise known as pi-heme-histidine, pros-heme-histidine).
Synonyms: protein-haem linkage via 3'-L-histidine
Comment: This term was obsoleted because it represents a molecular function.
protein polyamination (GO:0018184)
Namespace: biological_process
Definition: The modification of a protein amino acid by polyamination.
Synonyms: protein amino acid polyamination
obsolete poly-N-methyl-propylamination (GO:0018185)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-lysine by the addition of an N6-propylamino and of propylmethylamino units, forming N6-(propylamino-poly(propylmethylamino)-propyldimethylamine)-L-lysine, typical of the silicate binding protein silaffin.
Comment: This term was obsoleted because it represents a molecular function.
peroxidase-heme linkage (GO:0018186)
Namespace: biological_process
Definition: The covalent linkage of heme to peroxidase.
Synonyms: peroxidase-haem linkage
peptidyl-proline di-hydroxylation (GO:0018188)
Namespace: biological_process
Definition: The modification of peptidyl-proline to form trans-2,3-cis-3,4-dihydroxy-L-proline.
pyrroloquinoline quinone biosynthetic process (GO:0018189)
Namespace: biological_process
Definition: The chemical reactions and pathways resulting in the formation of the cofactor pyrroloquinoline quinone (PQQ); it is synthesized from a small peptide containing tyrosine and glutamic acid; these amino acids in the peptide are multiply cross-linked and the rest of the peptide is removed.
Synonyms: coenzyme pyrroloquinoline-quinone biosynthesis; coenzyme pyrroloquinoline-quinone biosynthetic process; PQQ biosynthesis; PQQ biosynthetic process; pyrroloquinoline quinone anabolism; pyrroloquinoline quinone biosynthesis; pyrroloquinoline quinone formation; pyrroloquinoline quinone synthesis; pyrroloquinoline-quinone biosynthesis; pyrroloquinoline-quinone biosynthetic process
protein octanoylation (GO:0018190)
Namespace: biological_process
Definition: The modification of a protein amino acid by formation of an ester or amide with octanoic acid.
Synonyms: protein amino acid octanoylation
peptidyl-serine octanoylation (GO:0018191)
Namespace: biological_process
Definition: The octanoylation of peptidyl-serine to form peptidyl-O3-octanoyl-L-serine, typical of the protein ghrelin.
obsolete enzyme active site formation via cysteine modification to L-cysteine persulfide (GO:0018192)
Namespace: biological_process
Definition: OBSOLETE. The formation of an enzyme active site via modification of peptidyl-cysteine to peptidyl-L-cysteine persulfide.
Synonyms: enzyme active site formation via L-cysteine persulphide
Comment: This term was obsoleted because it represents a reaction intermediate, not a biological process, see PMID:11592406.
peptidyl-amino acid modification (GO:0018193)
Namespace: biological_process
Definition: The alteration of an amino acid residue in a peptide.
peptidyl-alanine modification (GO:0018194)
Namespace: biological_process
Definition: The modification of peptidyl-alanine.
peptidyl-arginine modification (GO:0018195)
Namespace: biological_process
Definition: The modification of peptidyl-arginine.
obsolete peptidyl-asparagine modification (GO:0018196)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-asparagine.
Comment: This term was obsoleted because it represents a molecular function.
peptidyl-aspartic acid modification (GO:0018197)
Namespace: biological_process
Definition: The modification of peptidyl-aspartic acid.
peptidyl-cysteine modification (GO:0018198)
Namespace: biological_process
Definition: The modification of peptidyl-cysteine.
peptidyl-glutamine modification (GO:0018199)
Namespace: biological_process
Definition: The modification of peptidyl-glutamine.
peptidyl-glutamic acid modification (GO:0018200)
Namespace: biological_process
Definition: The modification of peptidyl-glutamic acid.
peptidyl-glycine modification (GO:0018201)
Namespace: biological_process
Definition: The modification of peptidyl-glycine.
peptidyl-histidine modification (GO:0018202)
Namespace: biological_process
Definition: The modification of peptidyl-histidine.
peptidyl-isoleucine modification (GO:0018203)
Namespace: biological_process
Definition: The modification of peptidyl-isoleucine.
peptidyl-leucine modification (GO:0018204)
Namespace: biological_process
Definition: The modification of peptidyl-leucine.
peptidyl-lysine modification (GO:0018205)
Namespace: biological_process
Definition: The modification of peptidyl-lysine.
peptidyl-methionine modification (GO:0018206)
Namespace: biological_process
Definition: The modification of peptidyl-methionine.
peptidyl-proline modification (GO:0018208)
Namespace: biological_process
Definition: The modification of peptidyl-proline.
peptidyl-serine modification (GO:0018209)
Namespace: biological_process
Definition: The modification of peptidyl-serine.
peptidyl-threonine modification (GO:0018210)
Namespace: biological_process
Definition: The modification of peptidyl-threonine.
peptidyl-tryptophan modification (GO:0018211)
Namespace: biological_process
Definition: The chemical alteration of a tryptophan residue in a peptide.
peptidyl-tyrosine modification (GO:0018212)
Namespace: biological_process
Definition: The modification of peptidyl-tyrosine.
peptidyl-valine modification (GO:0018213)
Namespace: biological_process
Definition: The modification of peptidyl-valine.
protein carboxylation (GO:0018214)
Namespace: biological_process
Definition: The addition of a carboxy group to a protein amino acid.
Synonyms: protein amino acid carboxylation
protein phosphopantetheinylation (GO:0018215)
Namespace: biological_process
Definition: The modification of a protein amino acid by phosphopantetheinylation.
Synonyms: protein amino acid phosphopantetheinylation
peptidyl-arginine methylation (GO:0018216)
Namespace: biological_process
Definition: The addition of a methyl group to an arginine residue in a protein.
peptidyl-aspartic acid phosphorylation (GO:0018217)
Namespace: biological_process
Definition: The phosphorylation of peptidyl-aspartic acid.
obsolete peptidyl-cysteine phosphorylation (GO:0018218)
Namespace: biological_process
Definition: OBSOLETE. The phosphorylation of peptidyl-cysteine to form peptidyl-S-phospho-L-cysteine.
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-cysteine S-acetylation (GO:0018219)
Namespace: biological_process
Definition: OBSOLETE. The acetylation of peptidyl-cysteine to form peptidyl-S-acetyl-L-cysteine.
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-threonine palmitoylation (GO:0018220)
Namespace: biological_process
Definition: OBSOLETE. The covalent attachment of a palmitoyl group to an oxygen (O) atom in a threonine residue to form peptidyl-O-palmitoyl-L-threonine.
Synonyms: peptidyl-threonine O-palmitoylation
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-serine palmitoylation (GO:0018221)
Namespace: biological_process
Definition: OBSOLETE. The covalent attachment of a palmitoyl group to an oxygen (O) atom in a serine residue to form peptidyl-O-palmitoyl-L-serine.
Synonyms: peptidyl-serine O-palmitoylation
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-L-cysteine methyl disulfide biosynthetic process from peptidyl-cysteine (GO:0018222)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-cysteine to form peptidyl-L-cysteine methyl disulfide.
Synonyms: peptidyl-L-cysteine methyl disulfide anabolism from peptidyl-cysteine; peptidyl-L-cysteine methyl disulfide formation from peptidyl-cysteine; peptidyl-L-cysteine methyl disulfide synthesis from peptidyl-cysteine; peptidyl-L-cysteine methyl disulphide biosynthesis from peptidyl-cysteine; peptidyl-L-cysteine methyl disulphide biosynthetic process from peptidyl-cysteine
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-S-12-hydroxyfarnesyl-L-cysteine biosynthetic process from peptidyl-cysteine (GO:0018227)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-cysteine to form S-12-hydroxyfarnesyl-L-cysteine; formation of S-farnesycysteine may be coupled with subsequent cleavage of a carboxy-terminal tripeptide for the CXXX motif and methyl esterification of the farnesylated cysteine.
Synonyms: peptidyl-S-12-hydroxyfarnesyl-L-cysteine anabolism from peptidyl-cysteine; peptidyl-S-12-hydroxyfarnesyl-L-cysteine formation from peptidyl-cysteine; peptidyl-S-12-hydroxyfarnesyl-L-cysteine synthesis from peptidyl-cysteine
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-S-geranylgeranyl-L-cysteine biosynthetic process from peptidyl-cysteine (GO:0018228)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-cysteine to form peptidyl-S-geranylgeranylcysteine; formation of S-geranylgeranyl-L-cysteine may be coupled with subsequent cleavage of a carboxy-terminal tripeptide for the CAAX motif and methyl esterification of the geranylgeranylated cysteine; methyl esterification but not cleavage occurs for the CXC motif. For the type II geranylgeranyltransferase the residue may be found at the first and final positions in the sequence motif C-X-C* or at the final position in the sequence motif C-C*. These motifs are necessary but not sufficient for modification.
Synonyms: peptidyl-S-geranylgeranyl-L-cysteine anabolism from peptidyl-cysteine; peptidyl-S-geranylgeranyl-L-cysteine formation from peptidyl-cysteine; peptidyl-S-geranylgeranyl-L-cysteine synthesis from peptidyl-cysteine
Comment: This term was obsoleted because it represents a molecular function.
obsolete peptidyl-L-cysteine methyl ester biosynthetic process from peptidyl-cysteine (GO:0018229)
Namespace: biological_process
Definition: OBSOLETE. The modification of a C-terminal peptidyl-cysteine to form peptidyl-L-cysteine methyl ester.
Synonyms: peptidyl-L-cysteine methyl ester anabolism from peptidyl-cysteine; peptidyl-L-cysteine methyl ester formation from peptidyl-cysteine; peptidyl-L-cysteine methyl ester synthesis from peptidyl-cysteine
Comment: This term was obsoleted because it represents a molecular function.
peptidyl-L-cysteine S-palmitoylation (GO:0018230)
Namespace: biological_process
Definition: The covalent attachment of a palmitoyl group to a sulfur (S) atom within a cysteine residue to form peptidyl-S-palmitoyl-L-cysteine.
Synonyms: peptidyl-cysteine S-palmitoylation; peptidyl-S-palmitoyl-L-cysteine anabolism from peptidyl-cysteine; peptidyl-S-palmitoyl-L-cysteine biosynthetic process from peptidyl-cysteine; peptidyl-S-palmitoyl-L-cysteine formation from peptidyl-cysteine; peptidyl-S-palmitoyl-L-cysteine synthesis from peptidyl-cysteine
Comment: Palmitoylation of a non-terminal cysteine residue always occurs on a sulfur (S) atom.
peptidyl-S-diacylglycerol-L-cysteine biosynthetic process from peptidyl-cysteine (GO:0018231)
Namespace: biological_process
Definition: The modification of peptidyl-cysteine to form peptidyl-S-diacylglycerol-L-cysteine; the oleate and palmitate actually represent mixtures of saturated (generally at 3') and unsaturated (generally at 2') fatty acids.
Synonyms: peptidyl-S-diacylglycerol-L-cysteine anabolism from peptidyl-cysteine; peptidyl-S-diacylglycerol-L-cysteine formation from peptidyl-cysteine; peptidyl-S-diacylglycerol-L-cysteine synthesis from peptidyl-cysteine
obsolete peptide cross-linking via S-(L-isoglutamyl)-L-cysteine (GO:0018232)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-glutamine and peptidyl-cysteine to form a S-(L-isoglutamyl)-L-cysteine protein cross-link.
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined in RESID.
obsolete peptide cross-linking via 2'-(S-L-cysteinyl)-L-histidine (GO:0018233)
Namespace: biological_process
Definition: OBSOLETE. The modification of peptidyl-histidine and peptidyl-cysteine to form a 2'-(S-L-cysteinyl)-L-histidine protein cross-link.
Comment: This term was obsoleted because it represents a molecular function; however the enzyme responsible for this reaction has not been defined.