| Geranylgeraniol is distributed as a pyrophosphate ester in the envelope and thylakoid membranes of chloroplasts. |
| The thylakoid system was normally developed with grana composed of, on average, three to four stacked thylakoids. |
| Chloroplasts in these plants were smaller and contained poorly developed thylakoid membrane systems. |
| The light-dependent reactions take place in the thylakoid membranes of the grana within chloroplasts. |
| Those appressed to another thylakoid in a stack called a granum are "appressed" or "agranal" thylakoids. |
| After being targeted to the thylakoid membrane, the D1 protein elongation and membrane insertion occur concomitantly. |
