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12 Cards in this Set
- Front
- Back
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Lysosomes |
Membrane enclosed compartments filled with soluble hydrolytic enzymes carry out intracellular digestion of macromolecules |
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Glycosidases |
Are enzymes that remove sugars |
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Glycosyl transferases |
Enzymes that catalyze the transfer of sugars |
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Peroxisomes |
Single membrane small organelles contain oxidative enzymes, breakdown fatty acids to acetyl coA Reduction catalyzed by oxidative enzymes called urate oxidase and catalase |
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Protein sorting |
Transfer of proteins from custom to different organelles |
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Nuclear Localization Signals |
Signal sequence that directs a proteins from the cytosol into the nucleus |
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Three mechanisms of protein entering membranes |
1. Gated transport 2. Protein translocators 3. Vesicular transport |
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Sorting signal |
A sequence of amino acids specific for each protein to guide them to which compartment they must travel to. |
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Dr. Gunter Blobel |
Nobel prize in 1999. Discovered proteins have internist signals that govern their transport and localization in the cell. |
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Nuclear pore complex |
Large protein complex part of nuclear pores which contains nuclear fibril, nuclear basket and pore |
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Protein translocators |
Embedded proteins on membrane that help transport proteins in or out of cell organelles |
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Co- Translational translocation |
Ribosomes attached to ER membrane. As proteins are synthesize they are also begin inserted to translocators protein at the same time. |
