BIO353H5 Study Guide - Final Guide: Pin Proteins, Pin1, Auxin
Document Summary
Missing: two midterms questions, and the crossings from the midterm (question 24) because we know how to do that. We"ll revise the midterm together, the haustorial hairs paper, and the cool tools lecture (lecture 2). You need to know what happens to pin proteins and auxin maxima before a new primordium pops up. Iaa (the most prevalent naturally occurring auxin) can enter a cell passively, and it can enter via uptake proteins. Because of the ph difference between outside the cell membrane (apoplast) and inside (cytoplasm) once iaa enters the cell it cannot leave again passively. Pin proteins transport iaa out of the cell. If pin proteins are localized on one side of a cell you can infer that this is the direction. In the sam, pin1 protein tends to localize on the side of a cell adjacent to a neighbouring cell that already has more iaa in it than the cell that is transporting auxin out.
