C4 photosynthesis

id: GO:0009760
name: C4 photosynthesis
namespace: biological_process
type: go
obsolete: False

Description: 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.

Child Functions

GO:0009762NADP-malic enzyme C4 photosynthesis
GO:0009763NAD-malic enzyme C4 photosynthesis
GO:0009764PEP carboxykinase C4 photosynthesis

Parent Functions

GO:0015977carbon fixation
GO:0019685photosynthesis, dark reaction
GO:0044236multicellular organismal metabolic process