lipid A phosphate methyltransferase activity

Catalysis of the transfer of a methyl group from S-adenosylmethionine (SAM) to the 1-phosphate group of lipid A.

4-hydroxytryptamine 4-phosphate methyltransferase activity

Catalysis of the reaction: 2 S-adenosyl-L-methionine (SAM) + 4-hydroxytryptamine 4-phosphate (norbaeocystin) = 2 S-adenosyl-L-homocysteine + psilocybin.

glycyl-radical enzyme activating activity

Catalyzes the activation of an enzyme by generating an organic free radical on a glycine residue via a homolytic cleavage of S-adenosyl-L-methionine (SAM).

[choline trimethylamine-lyase]-activating enzyme activity

Catalyzes the activation of choline trimethylamine-lyase by generation of an organic free radical on a glycine residue via a homolytic cleavage of S-adenosyl-L-methionine (SAM).

S-adenosylmethionine cycle

A cyclic series of interconversions involving S-adenosylmethionine, S-adenosyl-L-homocysteine, L-cysteine, and L-methionine. Couples utilization of the methyl group of SAM with recycling of the homocysteinyl group and regeneration of methionine.

MIB complex

A mitochondrial intermembrane space bridging complex consisting of components of the MICOS complex in the inner mitochondrial membrane, the SAM complex in the outer membrane, a conserved DNAJ protein (human DNAJC11) and Metaxin 1.

SAM domain binding

Binding to a SAM (Sterile Alpha Motif) domain, which is a 70-amino acid protein sequence that participates in protein-protein, protein-lipid, and protein-RNA interactions and is conserved from lower to higher eukaryotes.

TOM complex

A large mitochondrial outer membrane translocase complex that mediates transport of proteins into mitochondrial compartments. TOM transports beta-barrel precursors across the outer membrane and the sorting and assembly machinery (SAM complex) inserts them into the target membrane.

2-(3-amino-3-carboxypropyl)histidine synthase complex

A protein complex capable of catalysing the transfer of the 3-amino-3-carboxypropyl group from S-adenosyl-L-methionine (SAM) to the histidine residue of translation elongation factor 2 (EF2), which is the first step in the biosynthesis of diphthamide. The complex is a Dph2 homodimer in archaea and a Dph1-Dph2 heterodimer in eukaryotes.