31929 (GGPS5) Trans_IPPS_HT
Thalassiosira pseudonana

The chemical reactions and pathways resulting in the formation of any isoprenoid compound, isoprene (2-methylbuta-1,3-diene) or compounds containing or derived from linked isoprene (3-methyl-2-butenylene) residues.

Catalysis of the transfer of a prenyl group from one compound (donor) to another (acceptor).

Catalysis of the reaction: farnesyl diphosphate + protein-cysteine = S-farnesyl protein + diphosphate.

Catalysis of the covalent addition of a geranylgeranyl (20-carbon isoprenoid) group via thioether linkages to a cysteine residue at or near the C terminus of a protein.

Catalysis of the reaction: geranylgeranyl diphosphate + protein-cysteine = S-geranylgeranyl-protein + diphosphate. This reaction is the formation of a thioether linkage between the C-1 atom of the geranylgeranyl group and a cysteine residue fourth from the C-terminus of the protein. The protein substrates have the C-terminal sequence CA1A2X, where the terminal residue, X, is preferably leucine and A2 should not be aromatic. Known substrates include most g-subunits of heterotrimeric G proteins and Ras-related GTPases such as members of the Ras and Rac/Rho families.

Catalysis of the reaction: 2 geranylgeranyl diphosphate + protein-cysteine = 2 S-geranylgeranyl-protein + 2 diphosphate. This reaction is the formation of two thioether linkages between the C-1 atom of the geranylgeranyl groups and two cysteine residues within the terminal sequence motifs XXCC, XCXC or CCXX. Known substrates include Ras-related GTPases of a single family and the Rab family.

Catalysis of the covalent addition of an isoprenoid group such as a farnesyl or geranylgeranyl group via thioether linkages to a cysteine residue in a protein.

Catalysis of the reaction: farnesylfarnesylgeranyl diphosphate + p-hydroxybenzoate = 3-octaprenyl-4-hydroxybenzoate + diphosphate.

Catalysis of the reaction: protoheme IX + (2E,6E)-farnesyl diphosphate + H2O = heme o + diphosphate.

Catalysis of the reaction: 1,4-dihydroxy-2-naphthoate + polyprenylpyrophosphate = dimethylmenaquinone + diphosphate + CO2.