| GOID Link to GO |
Functional Category | Description | Protein Count link to protein list |
|---|---|---|---|
| GO:0010207 | photosystem II assembly | The aggregation, arrangement and bonding together of a set of components to form a photosystem II complex on the thylakoid membrane. The photosystem II complex consists of at least 20 polypeptides and around 80 cofactors in most organisms. | 261 |
| GO:0019684 | photosynthesis, light reaction | The light reactions of photosynthesis, which take place in photosystems II and I. Light energy is harvested and used to power the transfer of electrons among a series of electron donors and acceptors. The final electron acceptor is NADP+, which is reduced to NADPH. NADPH generated from light reactions is used in sugar synthesis in dark reactions. Light reactions also generate a proton motive force across the thylakoid membrane, and the proton gradient is used to synthesize ATP. There are two chemical reactions involved in the light reactions: water oxidation in photosystem II, and NADP reduction in photosystem I. | 180 |
| GO:0009773 | photosynthetic electron transport in photosystem I | A photosynthetic electron transport chain in which electrons move from the primary electron acceptor (Quinone, X) through a chain of electron transport molecules in the thylakoid membrane until they reach ferredoxin which passes the electron to the ultimate electron acceptor; NADP. | 80 |
| GO:0010206 | photosystem II repair | Proteolysis of the damaged D1 protein and re-assembly of a new D1 subunit in the photosystem II following photoinhibition. | 36 |
| GO:0009768 | photosynthesis, light harvesting in photosystem I | After a photon of light is absorbed by one of the many chlorophyll molecules, in one of the light-harvesting complexes of an antenna on photosystem I, some of the absorbed energy is transferred to the pair of chlorophyll molecules in the reaction center. | 28 |
| GO:0019253 | reductive pentose-phosphate cycle | The fixation of carbon dioxide (CO2) as glucose in the chloroplasts of C3 plants; uses ATP and NADPH formed in the light reactions of photosynthesis; carbon dioxide reacts with ribulose 1,5-bisphosphate (catalyzed by the function of ribulose-bisphosphate carboxylase) to yield two molecules of 3-phosphoglycerate; these are then phosphorylated by ATP to 1,3-bisphosphateglyceraldehyde which, in turn, is then reduced by NADPH to glyceraldehyde 3-phosphate. The glyceraldehyde 3-phosphate is converted to fructose 5-phosphate and ribulose 5-phosphate by aldolase and other enzymes; the ribulose 5-phosphate is phosphorylated by ATP to ribulose 1,5-bisphosphate. | 21 |
| GO:0009767 | photosynthetic electron transport chain | A process, occurring as part of photosynthesis, in which light provides the energy for a series of electron carriers to operate together to transfer electrons and generate a transmembrane electrochemical gradient. | 19 |
| GO:0009765 | photosynthesis, light harvesting | Absorption and transfer of the energy absorbed from light photons between photosystem reaction centers. | 18 |
| GO:0009769 | photosynthesis, light harvesting in photosystem II | After a photon of light is absorbed by one of the many chlorophyll molecules, in one of the light-harvesting complexes of an antenna on photosystem II, some of the absorbed energy is transferred to the pair of chlorophyll molecules in the reaction center. | 17 |
| GO:0048564 | photosystem I assembly | The aggregation, arrangement and bonding together of a set of components to form a photosystem I complex on the thylakoid membrane. | 12 |
| GO:0009772 | photosynthetic electron transport in photosystem II | A photosynthetic electron transport chain in which electrons move from the primary electron acceptor (Quinone, Q) through a chain of electron transport molecules in the thylakoid membrane until they reach the ultimate electron acceptor of Photosystem II, which is plastocyanin (PC). The electron is then passed to the P700 chlorophyll a molecules of the reaction centre of photosystem I. | 11 |
| GO:0010270 | photosystem II oxygen evolving complex assembly | The aggregation, arrangement and bonding together of a set of components to form the oxygen evolving complex (OEC) of photosystem II on a thylakoid membrane. The OEC protects the calcium-4 manganese-5 oxide cluster which is bound to the D1 and CP43 proteins. The exact protein composition of the OEC varies between cyanobacteria and plants, and in plants consists of three extrinsic nuclear-encoded polypeptides: PsbO, PsbP and PsbQ. | 7 |
| GO:0009760 | C4 photosynthesis | The combination of atmospheric CO2 with a 3-carbon molecule phosphoenol pyruvate (PEP) in the mesophyll cells to make a 4-carbon acid which is immediately converted to malic acid. The malic acid is then passed across to the bundle sheath cells where it is broken down again to pyruvic acid and CO2. The acid is passed back to the mesophyll cells to be used again, while the CO2 is fed into the reductive pentose-phosphate cycle (Calvin cycle) and converted into sugar and starch. | 7 |
| GO:0019685 | photosynthesis, dark reaction | A complex cycle of enzyme-mediated reactions which catalyzes the reduction of carbon dioxide to sugar. As well as carbon dioxide the cycle requires reducing power in the form of reduced nicotinamide adenine dinucleotide phosphate (NADP) and chemical energy in the form of adenosine triphosphate (ATP). The reduced NADP (NADPH) and ATP are produced by the 'light' reactions. | 1 |
| GO:0009780 | photosynthetic NADP+ reduction | An NADPH regeneration process that contributes to the light reactions of photosynthesis. The light reactions of photosynthesis use energy from photons to generate high-energy electrons. These electrons are used directly to reduce NADP+ to NADPH. NADPH is a relatively stable molecule and can pass on its hydrogen atom to other molecules in chemical reactions. | 1 |