Three mechanisms by which membrane-bind-ing proteins bend a membrane are illustrated in FigureQ10–2A, B, and C. As shown, each of these cytosolic mem-brane-bending proteins would induce an invagination ofthe plasma membrane. Could similar kinds of cytosolicproteins induce a protrusion of the plasma membrane(Figure Q10–2D)? Which ones? Explain how they mightwork. (A)(B)CYTOSOιEXTRACELLULARSPACE(C)(D)protrusionFigure Q10-2 Bending of the plasma membrane by cytosolic proteins(Problem 10-10). (A) Insertion of a protein "finger" into the cytosolicleaflet of the membrane. (B) Binding of lipids to the curved surface ofa membrane-binding protein. (C) Binding of membrane proteins tomembrane lipids with large head groups. (D) A segment of the plasmamembrane showing a protrusion.3

Introduction Proteins are complex biomolecules and macromolecules that are made up of one or more…

Answered: (A) (B) CYTOSOι EXTRACELLULAR SPACE (C)…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Three mechanisms by which membrane-bind-
ing proteins bend a membrane are illustrated in Figure
Q10–2A, B, and C. As shown, each of these cytosolic mem-
brane-bending proteins would induce an invagination of
the plasma membrane. Could similar kinds of cytosolic
proteins induce a protrusion of the plasma membrane
(Figure Q10–2D)? Which ones? Explain how they might
work.

(A)
(B)
CYTOSOι
EXTRACELLULAR
SPACE
(C)
(D)
protrusion
Figure Q10-2 Bending of the plasma membrane by cytosolic proteins
(Problem 10-10). (A) Insertion of a protein "finger" into the cytosolic
leaflet of the membrane. (B) Binding of lipids to the curved surface of
a membrane-binding protein. (C) Binding of membrane proteins to
membrane lipids with large head groups. (D) A segment of the plasma
membrane showing a protrusion.
3

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