Catalysis of the hydrolysis of the imidazole ring of GTP, releasing formate. Two C-N bonds are hydrolyzed and the pentase unit is isomerized.

Catalysis of the overall reaction: methyl-Co(III) methylated-thiol-specific corrinoid protein + coenzyme M = Co(I) methylated--thiol-specific corrinoid protein + methyl-CoM.

Catalysis of the transfer of a methyl group to an acceptor molecule.

Catalysis of the reaction: 7,8-dihydromethanopterin + NADPH = 5,6,7,8-tetrahydromethanopterin + NADP.

Catalysis of an oxidation-reduction (redox) reaction in which a CH-NH group acts as a hydrogen or electron donor and reduces NAD or NADP.

Catalysis of the reaction: tetrahydromethanopterin + L-serine = 5,10-methylenetetrahydromethanopterin + glycine + H2O.

Catalysis of the transfer of a hydroxymethyl- or formyl group from one compound (donor) to another (acceptor).

Catalysis of the reaction: L-phosphoserine + SO32- = L-cysteate + HPO4-.

Catalysis of the reaction: geranylgeranyl diphosphate + isopentenyl diphosphate = (2E,6E,10E,14E)-geranylfarnesyl diphosphate + diphosphate.

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

Catalysis of the reaction: 7,8-dihydro-D-neopterin 2',3'-cyclic phosphate + H2O = 7,8-dihydroneopterin 3'-phosphate + H+.

The sliding of actin thin filaments and myosin thick filaments past each other in muscle contraction. This involves a process of interaction of myosin located on a thick filament with actin located on a thin filament. During this process ATP is split and forces are generated.

The sliding movement of actin thin filaments and myosin thick filaments past each other.

A protein complex of two polypeptides which catalyzes the transfer of methyl group from methylthiol to coenzyme M during methanogenesis.

A protein complex that possesses methyltransferase activity.

The regulated release of proinsulin from secretory granules accompanied by cleavage of proinsulin to form mature insulin. In vertebrates, insulin is secreted from B granules in the B cells of the vertebrate pancreas and from insulin-producing cells in insects.

OBSOLETE. A thylakoid; as in, but not restricted to, the purple bacteria and relatives (Proteobacteria, ncbi_taxonomy_id:1224).

A thylakoid that is derived from and attached to, but not necessarily continuous with, the plasma membrane, and is not enclosed in a plastid. It bears the photosynthetic pigments in photosynthetic cyanobacteria.

A membranous cellular structure that bears the photosynthetic pigments in plants, algae, and cyanobacteria. In cyanobacteria thylakoids are of various shapes and are attached to, or continuous with, the plasma membrane. In eukaryotes they are flattened, membrane-bounded disk-like structures located in the chloroplasts; in the chloroplasts of higher plants the thylakoids form dense stacks called grana. Isolated thylakoid preparations can carry out photosynthetic electron transport and the associated phosphorylation.

Organized structure of distinctive morphology and function, not bounded by a lipid bilayer membrane and occurring within the cell. Includes ribosomes, the cytoskeleton and chromosomes.