Cuitláuac was the Aztec ruler of the city of Tenochtitlan for a few weeks. He was elected before the death of Moctezuma II, because Moctezuma II was being held prisoner by the Spanish. Cuitlauac died of smallpox.
... on to ferredoxin, and then to an enzyme called NADP+ reductase[?] which uses them to drive the reaction
NADP+ + H+ + 2e- → NADPH
This consumes the H+ ions ...