#Question id: 4148
#Section 3: Genetics, Cellular and Molecular Biology
Which of the following is true about the sorting pathway for proteins destined for incorporation into lysosomes or the plasma membrane of eukaryotic cells?
#Question id: 4149
#Section 3: Genetics, Cellular and Molecular Biology
Glycosylation of proteins inside the endoplasmic reticulum does not involve:
#Question id: 4150
#Section 3: Genetics, Cellular and Molecular Biology
Posttranslational glycosylation of proteins is inhibited specifically by:
#Question id: 4151
#Section 3: Genetics, Cellular and Molecular Biology
The signal sequences that direct proteins to the nucleus are:
#Question id: 4152
#Section 3: Genetics, Cellular and Molecular Biology
The pathway for polypeptides exported from E. coli includes the following steps, which occur in what order for correct export?
1. A chaperone, SecA, binds to the polypeptide.
2. A chaperone, SecB, binds to the polypeptide.
3. ATP is hydrolyzed by Sec A.
4. SecA pushes 20 amino acids of the polypeptide into the translocation complex.
#Question id: 4153
#Section 3: Genetics, Cellular and Molecular Biology
Ubiquitin-mediated protein degradation is a complex process, and many of the signals remain unknown. One known signal involves recognition of amino acids in a processed protein that are either stabilizing (Ala, Gly, Met, Ser, etc.) or destabilizing (Arg, Asp, Leu, Lys, Phe, etc.), and are located at: