The formation of an isopeptide cross-link between peptidyl-lysine and peptidyl-glutamine to produce N6-(L-isoglutamyl)-L-lysine.

The modification of peptidyl-histidine and peptidyl-tyrosine to form a 3'-(1'-L-histidyl)-L-tyrosine protein cross-link.

The formation of a cross-link between peptidyl-cysteine and peptidyl-threonine via the formation of S-(2-aminovinyl)-3-methyl-D-cysteine.

The chemical reactions and pathways resulting in the formation of dipyrrins (pyrromethanes), compounds containing two pyrrole rings linked through a methine, -CH=, group.

The covalent binding of a pyrromethane (dipyrrin) cofactor to protein via the sulfur atom of cysteine forming dipyrrolylmethanemethyl-L-cysteine.

Catalysis of the reaction: 7alpha-hydroxycholest-4-en-3-one + H(+) + NADPH + O(2) = 7alpha,12alpha-dihydroxycholest-4-en-3-one + H(2)O + NADP(+).

Catalysis of the reaction: H(+) + lithocholate + NADPH + O(2) = 6-beta-hydroxylithocholate + H(2)O + NADP(+).

Catalysis of the reaction: 5beta-cholestane-3alpha,7alpha-diol + H(+) + NADPH + O(2) = 5beta-cholestane-3alpha,7alpha,12alpha-triol + H(2)O + NADP(+).

Any process involved in the maintenance of a steady-state level of the surface-active lipoprotein mixture which coats the alveoli.

Any process that activates or increases the activity of 1-phosphatidylinositol 4-kinase.

Any process that modulates the activity of the enzyme 1-phosphatidylinositol 4-kinase.

Any process that stops or reduces the activity of the enzyme 1-phosphatidylinositol 4-kinase.

The linkage of the chromophore phycoerythrobilin to phycoerythrocyanin via S-phycoerythrobilin-L-cysteine.

The linkage of the chromophore phycoerythrobilin to phycoerythrin via phycoerythrobilin-bis-L-cysteine.

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.

The uridylylation of peptidyl-tyrosine to form peptidyl-O4'-(phospho-5'-uridine)-L-tyrosine, found in glutamine synthetase.

The formation of a covalent cross-link between DNA and a peptidyl-threonine residue by the formation of O-(phospho-5'-DNA)-L-threonine.

The formation of a covalent cross-link between DNA and a peptidyl-tyrosine residue by the formation of O4'-(phospho-5'-DNA)-L-tyrosine.

The modification of protein tyrosine to peptidyl-L-3',4',5'-dihydroxyphenylalanine.

The oxidation of peptidyl-cysteine to peptidyl-L-cysteine sulfinic acid or peptidyl-L-cysteine sulfenic acid.