- acetylation
- one acetyl group at least is attached to a molecule; posttranslational modification of proteins, generally at the N-terminus
- amidation
- addition of an amide group from a glycine to a protein amino acid [1]
- activation
- increase of protein activity; it means that the reactions going out from the target molecule would follow after this reaction
- assembly
- congregation of molecules in a certain subcellular location (e.g. membranous lipid rafts); term does not emphasize direct interaction
- binding
- any kind of chemical/physical bond (covalent bond, hydrogen bond, ion complex, Van-der-Waals) that is established between reaction partners - if not defined more stringently as condensation, acetylation etc.
- carboxylation
- addition of a carboxy group to a protein amino acid [1]
- cleavage
- peptide bond between amino acids is cleaved by an endoprotease
- competition
- two or more molecules competing for a reaction partner/ signal
- condensation
- chemical reaction forming a new chemical bond while setting free molecular water
- conjugation
- coupling of a molecule with at least one ubiquitin-like molecule (e.g. Nedd8/Rub1)
- deacetylation
- removement of an acetyl group
- deamidation
- removement of an amide group
- decarboxylation
- removement of a carboxy group
- decrease of abundance
- decrease of cleavage
- decrease of folding
- decrease of phosphorylation
- indirect effect, can occur via dephosphorylation or via inhibition of phosphorylation
- decrease of processing
- decrease of secretion
- decrease of transport
- decrease of ubiquitination
- deconjugation
- deglycosylation
- removement of a glycosyl group
- degradation
- breakdown of a molecule (leaving behind protein remnants; mediated by enzymes, proteasome)
- dehydroxylation
- removement of a hydroxy group
- demethylation
- removement of a methyl group
- demyristoylation
- removement of a myristoyl moiety
- denitration
- denitrosylation
- removement of a nitrosyl group
- depalmitoylation
- removement of a palmitoyl moiety
- dephosphorylation
- catalyzed separation of a phosphate group from a molecule (mediated by a phosphatase)
- desulfation
- removement of a sulfate group
- destabilization
- additional association of a protein decreases the stability/affinity of an existing complex
- dissociation
- DNA binding
- binding of proteins (transcription factors) to DNA
- exchange
- catalyzed replacement of a group by another (e.g. exchange of G-protein associated GDP with GTP by a GEF)
- expression
- transfer of information encoded in the DNA (nucleotide sequence) into the protein (amino acid sequence); reactions with effect expression include several steps: transcription, splicing, capping, and translation.
- glycosylation
- transfer of one or more glycosyl groups to a molecule, resulting in a glycoprotein; posttranslational modification
- N-glycosylation
- O-glycosylation
- hydrolysis
- catalyzed splitting of a chemical bond with the consumption of water
- hydroxylation
- addition of a hydroxy group to a protein amino acid [1]
- increase of abundance
- increase of folding
- increase of secretion
- increase of transport
- inhibition
- decrease of protein activity
- means that the reactions going out from the target molecule would
- stop after this reaction or would
- follow if this reaction would not signal;
- interaction
- binary relation which states nothing about directionality between two molecules with yet undefined mechanism; both molecules are entered in the 'molecules upstream' list
- isomerization
- directed conformational change between cis- and trans-conformation of a peptide chain
- methylation
- posttranslational modification, covalent transfer of a methyl group to a substrate
- myristoylation
- covalent or non-covalent attachment of a myristoyl moiety to a protein amino acid [1]
- nitration
- nitrosylation
- covalent transfer of NO to a substrate; S-nitrosylation (transfer of NO to Cys-residues) of a protein controls its activity similar to O-phosphorylation
- oligomerization
- assembly of a complex; resumes the terms homo- and heteromerization and di-/trimerization as well
- palmitoylation
- covalent or non-covalent attachment of a palmitoyl moiety to a protein amino acid [1]
- phosphorylation
- catalyzed binding of a phosphate group to a molecule (for example mediated by protein kinases)
- prenylation
- class of lipid modification involving covalent addition of either farnesyl (15-carbon) or geranylgeranyl (20-carbon) isoprenoids to conserved cysteine residues at or near the C-terminus of proteins [2]
- processing
- is used as a term for the catalyzed maturation of proteins (usually associated with proteolytic cutting of the signal peptide or more)
- redox reaction
- a reaction in which one or more electrons are transferred
- regulation of abundance
- abundance of a protein is regulated in an undefined way
- regulation of acetylation
- acetylation status of a protein is regulated in an undefined way
- regulation of activity
- activity of a protein is regulated in an undefined way
- regulation of amidation
- amidation status of a protein is regulated in an undefined way
- regulation of carboxylation
- carboxylation status of a protein is regulated in an undefined way
- regulation of cleavage
- cleavage of a protein is regulated in an undefined way
- regulation of degradation
- degradation of a protein is regulated in an undefined way
- regulation of folding
- folding of a protein is regulated in an undefined way
- regulation of glycosylation
- glycosylation status of a protein is regulated in an undefined way
- regulation of localization
- localization of a protein is regulated in an undefined way
- regulation of methylation
- methylation status of a protein is regulated in an undefined way
- regulation of N-glycosylation
- N-glycosylation status of a protein is regulated in an undefined way
- regulation of nitration
- nitration status of a protein is regulated in an undefined way
- regulation of oxidation
- oxidation status of a protein is regulated in an undefined way
- regulation of phosphorylation
- phosphorylation status of a protein is regulated in an undefined way
- regulation of secretion
- secretion of a protein is regulated in an undefined way
- regulation of stability
- stability of a protein is regulated in an undefined way
- regulation of sulfation
- sulfation status of a protein is regulated in an undefined way
- regulation of transport
- transport of a protein is regulated in an undefined way
- regulation of ubiquitination
- ubiquitination status of a protein is regulated in an undefined way
- stabilization
- additional association of a protein enhances the stability of an already existing complex
- sulfation
- addition of a sulfate group as an ester to a protein amino acid [1]
- transactivation
- general term for gene activation, involves transcription
- translocation
- indicates the regulated transfer of a signaling molecule to another subcellular location (often from cytosol to nucleus)
- transregulation
- direct transcriptional regulation by binding of a transcription factor to its cognate site within the gene regulatory region; the term transregulation does not differentiate between activation or inhibition.
- transrepression
- repression of a gene by a transcription factor
- ubiquitination
- coupling of a molecule with ubiquitin
- unknown
- indicates that it is not known, if the signal acceptor in the semantic reaction is activated or inhibited
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