[Membrane Proteins] Based on the figure provided, What classification best describes G-proteins? Light Cytosol Disk membrane Disk lumen 3 PDE 4 PDE Rod GBY Inactive Active plasma membrane R R* 5 CGMP GMP 6 PDE PDE Low cytosolic CGMP (•) Na* Ca2+ Inactive Active Closed CGMP-gated ion channel (less neurotransmitter released) G RGS9 GB5 High Dark-adapted cytosolic CGMP (•) RGS9 state GB5 Na* Ca2+ Open CGMP-gated ion channel (more neurotransmitter released) Lodish et al. (2016), Molecular Biology of the Cell, 8th Edition, Chapter 15 Integral Membrane Proteins O Peripheral Membrane Proteins O Lipid-Anchored Proteins O Soluble Cytosolic Proteins OTP
Proteins
We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.
Protein Expression
The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.
[Membrane Proteins] Based on the figure provided, What classification best describes G-proteins?
![Light
Cytosol
Disk membrane
Disk lumen
PDE
4 PDE
Rod
plasma
membrane
R
R*
GBy
Inactive
Active
CGMP GMP
PDE
PDE
Low
cytosolic
CGMP (•)
Na*
Ca2+
Inactive
Active
Closed CGMP-gated
ion channel
(less neurotransmitter released)
RGS9
GB5
High Dark-adapted
cytosolic
CGMP
RGS9
state
GB5
Na*
Ca2+
Open CGMP-gated
ion channel
(more neurotransmitter released)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9e8f1e7c-86ce-4314-bd3c-a742736bebc8%2F221aa759-0b2d-44f9-ba21-c35718e6589a%2Fimhtqug_processed.png&w=3840&q=75)
![[Membrane Proteins] Based on the figure provided, What classification
best describes G-proteins?
Light
Cytosol
Disk membrane
Disk lumen
3
PDE
PDE
Rod
plasma
membrane
R
R*
GBY
Inactive
Active
Ga
CGMP
GMP
6
Low
cytosolic
CGMP (•)
PDE
PDE
Na*
Ca2+
Inactive
Active
Closed CGMP-gated
ion channel
(less neurotransmitter released)
RGS9
GB5
High Dark-adapted
cytosolic
CGMP
(0)
RGS9
state
GB5
Na*
Ca2+
Open CGMP-gated
ion channel
(more neurotransmitter released)
Lodish et al. (2016), Molecular Biology of the Cell, 8th Edition, Chapter 15
O Integral Membrane Proteins
O Peripheral Membrane Proteins
O Lipid-Anchored Proteins
O Soluble Cytosolic Proteins](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9e8f1e7c-86ce-4314-bd3c-a742736bebc8%2F221aa759-0b2d-44f9-ba21-c35718e6589a%2Fwu4b7tf_processed.png&w=3840&q=75)
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