Question
Describe the protein transport pathways into the thylakoid lumen with a neat labeled diagram.
Answer :
Word Count : 519
______ __________ _______ ________ _____ ___ __________ __________ _________ _______ _________ _____.
_______ ________ _____ _______ ____ _______ ________ _________ _______ _______.
______ ______ _________ _____ ____ _________ ___ ___ ______.
__________ _________ ________ ________ ____ ____ ____.
________ ______ ___ ______ ______ _________ _________ _______ ______ ________ _______ _______.
________ ____ ____ ________ __________ __________ _________ ___ _____ ____ _____.
_______ _________ ______ _____ ______ ___ _______ __________.
______ ____ __________ _______ _________ ____ ______ ____ _______ ______ ________ ____.
_______ _______ _________ _______ ___ _________.
_________ ______ ________ ________ __________ ________ _________ _______ _______ ______.
______ __________ ______ _______ ___ _________ ___ ____ _______ _______ ______.
_______ ___ ________ _____ ________ ________ ______ ________ ___ ________ ________ _______.
____ __________ ____ __________ __________ ___ ______ ____ _______ ___ _____.
_______ ________ _____ _______ ___ _____ _________ __________ __________ _________.
____ _______ ____ ____ ______ ______ _________ _____ _______ ____.
____ ________ _____ ____ ________ ______ ___.
_________ _______ _________ ___ ________ ________ ____ _______ ___.
________ _____ ____ ____ _____ ______.
_____ ______ _______ ________ ___ ________ ____ ________ _______ _____.
____ ___ ___ _________ _____ ______ _____ _____ _____ ______ ________.
____ ___ ______ __________ ______ ____ ______ ________ ______ __________.
_____ _________ _____ _________ ________ _________ ________.
__________ __________ ________ ____ ________ __________ _______.
_______ ________ ________ _______ ______.
_____ _____ ___ ____ __________ ______ ___.
________ ________ ___ ___ ___ _________ ___.
________ __________ ____ __________ ____ _____ _______.
________ ______ ______ __________ _________ __________ ___ ____ ______.
__________ _______ ______ _________ ____ ____ _________ ___.
________ _______ _______ _________ ___ _________ ______ __________ _________ _______.
________ _________ ____ ___ ___ _______ ____ _______.
_________ __________ _______ ____ ________ _________ ______ __________.
______ ____ ______ _______ ___ __________ ____ ______ __________ _____.
__________ _______ ___ ______ ____ ______.
___ _________ ________ ___ __________.
________ _____ __________ ________ ____ _______ __________.
_______ ____ ________ ___ _______.
_______ __________ ________ __________ ______.
___ ____ _____ _________ ___ _________.
_______ _____ __________ ____ __________ __________ _______ __________ ______ _____ ___.
_______ _____ _____ _______ _______ _________ _________.
__________ _____ ___ ____ ___ ________ __________ ______ _________.
______ _____ ________ __________ _________ ____ __________ __________ ____.
Skip in 10
Protein transport into the thylakoid lumen is a critical process in chloroplasts that ensures proper functioning of the photosynthetic machinery. Proteins synthesized in the cytosol of plant cells carry a chloroplast transit peptide that directs them into the chloroplast stroma. Once inside the stroma, these proteins require additional targeting signals to enter the thylakoid lumen. There are multiple pathways responsible for transporting proteins across the thylakoid membrane, primarily the Sec, Tat, SRP, and spontaneous pathways. The Sec (Secretory) pathway transports proteins in an unfolded state. Proteins targeted to this pathway possess an N-terminal thylakoid transfer domain after the chloroplast transit peptide. The Sec machinery includes the SecA motor protein and the SecYEG translocon embedded in the thylakoid membrane. SecA binds the precursor protein in the stroma and uses ATP hydrolysis to push it through the SecYEG channel. Once across, the
_________ _________ ____ ___ _______ _________ __________ ___ ______ ________ _________ _________.______ __________ _______ ________ _____ ___ __________ __________ _________ _______ _________ _____.
_______ ________ _____ _______ ____ _______ ________ _________ _______ _______.
______ ______ _________ _____ ____ _________ ___ ___ ______.
__________ _________ ________ ________ ____ ____ ____.
________ ______ ___ ______ ______ _________ _________ _______ ______ ________ _______ _______.
________ ____ ____ ________ __________ __________ _________ ___ _____ ____ _____.
_______ _________ ______ _____ ______ ___ _______ __________.
______ ____ __________ _______ _________ ____ ______ ____ _______ ______ ________ ____.
_______ _______ _________ _______ ___ _________.
_________ ______ ________ ________ __________ ________ _________ _______ _______ ______.
______ __________ ______ _______ ___ _________ ___ ____ _______ _______ ______.
_______ ___ ________ _____ ________ ________ ______ ________ ___ ________ ________ _______.
____ __________ ____ __________ __________ ___ ______ ____ _______ ___ _____.
_______ ________ _____ _______ ___ _____ _________ __________ __________ _________.
____ _______ ____ ____ ______ ______ _________ _____ _______ ____.
____ ________ _____ ____ ________ ______ ___.
_________ _______ _________ ___ ________ ________ ____ _______ ___.
________ _____ ____ ____ _____ ______.
_____ ______ _______ ________ ___ ________ ____ ________ _______ _____.
____ ___ ___ _________ _____ ______ _____ _____ _____ ______ ________.
____ ___ ______ __________ ______ ____ ______ ________ ______ __________.
_____ _________ _____ _________ ________ _________ ________.
__________ __________ ________ ____ ________ __________ _______.
_______ ________ ________ _______ ______.
_____ _____ ___ ____ __________ ______ ___.
________ ________ ___ ___ ___ _________ ___.
________ __________ ____ __________ ____ _____ _______.
________ ______ ______ __________ _________ __________ ___ ____ ______.
__________ _______ ______ _________ ____ ____ _________ ___.
________ _______ _______ _________ ___ _________ ______ __________ _________ _______.
________ _________ ____ ___ ___ _______ ____ _______.
_________ __________ _______ ____ ________ _________ ______ __________.
______ ____ ______ _______ ___ __________ ____ ______ __________ _____.
__________ _______ ___ ______ ____ ______.
___ _________ ________ ___ __________.
________ _____ __________ ________ ____ _______ __________.
_______ ____ ________ ___ _______.
_______ __________ ________ __________ ______.
___ ____ _____ _________ ___ _________.
_______ _____ __________ ____ __________ __________ _______ __________ ______ _____ ___.
_______ _____ _____ _______ _______ _________ _________.
__________ _____ ___ ____ ___ ________ __________ ______ _________.
______ _____ ________ __________ _________ ____ __________ __________ ____.
IGNOU ACADEMY
Your IGNOU journey, made easier.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
Continue Reading — It's Free
Sign in with Google to unlock more of this answer.
✓ Free access
✓ Unlock up to 60% of the answer
✓ No payment required
✓ Unlock up to 60% of the answer
✓ No payment required
Quick Google sign-in. No separate registration form.