thylakoid
Sign in to save250px|thumb|Thylakoids (dark green) inside a chloroplast Thylakoids are membrane-bound compartments inside chloroplasts and cyanobacteria. They are the site of the light-dependent reactions of photosynthesis. Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen. Chloroplast thylakoids frequently form stacks of disks referred to as grana (singular: granum). Grana are connected by intergranal or stromal thylakoids, which join granum stacks together as a single functional compartment.
Article
25 sectionsContents
- Etymology
- Structure
- Membrane
- Lumen
- Granum and stroma lamellae
- Formation
- Isolation and fractionation
- Proteins
- Integral membrane proteins
- Photosystems
- Cytochrome b6f complex
- ATP synthase
- Lumen proteins
- Protein expression
- Protein targeting to the thylakoids
- Function
- Water photolysis
- Electron transport chains
- Chemiosmosis
- Source of proton gradient
- ATP generation
- Thylakoid membranes in cyanobacteria
- See also
- References
- Textbook sources
250px|thumb|Thylakoids (dark green) inside a chloroplast Thylakoids are membrane-bound compartments inside chloroplasts and cyanobacteria. They are the site of the light-dependent reactions of photosynthesis. Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen. Chloroplast thylakoids frequently form stacks of disks referred to as grana (singular: granum). Grana are connected by intergranal or stromal thylakoids, which join granum stacks together as a single functional compartment.
In thylakoid membranes, chlorophyll pigments are found in packets called quantasomes. Each quantasome contains 230 to 250 chlorophyll molecules.