- G-protein alpha(q)-synembrin complex
A protein complex formed by the association of the guanine nucleotide exchange factor synembrin with the alpha(q) subunit of a heterotrimeric G protein.
- obsolete quinone cofactor methyltransferase activity
OBSOLETE. Catalysis of the transfer of a methyl group from S-adenosylmethionine during the synthesis of quinone cofactors such as ubiquinone (coenzyme Q), menaquinone (vitamin K2), plastoquinone and phylloquinone (vitamin K1).
- SNARE complex assembly
The aggregation, arrangement and bonding together of a set of components to form a SNARE complex, a protein complex involved in membrane fusion; a stable ternary complex consisting of a four-helix bundle, usually formed from one R-SNARE and three Q-SNAREs with an ionic layer sandwiched between hydrophobic layers.
- SNARE complex disassembly
The disaggregation of the SNARE protein complex into its constituent components. The SNARE complex is a protein complex involved in membrane fusion; a stable ternary complex consisting of a four-helix bundle, usually formed from one R-SNARE and three Q-SNAREs with an ionic layer sandwiched between hydrophobic layers.
- SNARE complex
A protein complex involved in membrane fusion; a stable ternary complex consisting of a four-helix bundle, usually formed from one R-SNARE and three Q-SNAREs with an ionic layer sandwiched between hydrophobic layers. One well-characterized example is the neuronal SNARE complex formed of synaptobrevin 2, syntaxin 1a, and SNAP-25.
- respiratory chain complex III assembly
The aggregation, arrangement and bonding together of a set of components to form the cytochrome bc(1) complex, a transmembrane lipoprotein complex that it catalyzes the reduction of cytochrome c by accepting reducing equivalents from Coenzyme Q, by the aggregation, arrangement and bonding together of its constituents.
- obsolete primary charge separation in photosystem II
OBSOLETE. Energized reaction-center P680 chlorophylls on photosystem II donate an electron to a loosely bound acceptor molecule, the quinone Q, on the stromal surface of the thylakoid membrane. The result is charge separation; a negative charge on the stromal side of the thylakoid membrane and a positive charge on the luminal side.
- regulation of SNARE complex assembly
Any process that modulates the frequency, rate or extent of assembly of the SNARE complex. The SNARE complex is a protein complex involved in membrane fusion; a stable ternary complex consisting of a four-helix bundle, usually formed from one R-SNARE and three Q-SNAREs with an ionic layer sandwiched between hydrophobic layers.