B M B 211 Lecture Notes - Lecture 12: Photophosphorylation, P700, Photosystem I

• School: PSU
• Department: Biochemistry and Molecular Biology
• Course: B M B 211
• Professor: Giebink Heather

Document Summary

6co(cid:1031) + 6h(cid:1031)o + su(cid:374)light c h(cid:1030)(cid:1031)o + 6o(cid:1031) *(cid:448)e(cid:396)(cid:455) la(cid:396)ge g so (cid:374)eed e(cid:374)e(cid:396)g(cid:455) f(cid:396)o(cid:373) the su(cid:374) to (cid:272)o(cid:373)plete (cid:396)ea(cid:272)tio(cid:374) Light energy drives the production of atp and nadph (cid:449)hi(cid:272)h a(cid:396)e the(cid:374) used to (cid:272)o(cid:374)(cid:448)e(cid:396)t co(cid:1031) i(cid:374)to sugars. Photosynthesis in green plants takes place in the chloroplast which is very similar to the mitochondria (except for it has three membranes) Inner membrane regulates the transport into and out of the chloroplast. Stroma is the space inside the inner membrane. Stromal lamella is the thylakoid membrane that interconnects grana. The proteins and pigments responsible for photosynthesis are found within the thylakoid membrane. Light reactions: visible light acts as the energy source to oxidize h(cid:1031)o to (cid:396)edu(cid:272)e nadp to nadph a(cid:374)d (cid:396)elease o(cid:1031), atp is ge(cid:374)e(cid:396)ated. Dark reactions: nadph a(cid:374)d atp d(cid:396)i(cid:448)e the (cid:396)edu(cid:272)ti(cid:448)e fi(cid:454)atio(cid:374) of co(cid:1031) i(cid:374)to (cid:272)a(cid:396)(cid:271)oh(cid:455)d(cid:396)ates (light reactions are needed to do the dark)