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Unformatted text preview: s with an hydrophobic core. These are recognized by the signal recognition particle and the complex binds to the SRP receptor. When translation resumes the signal peptide is cleaved by the signal peptidase. We refer to the original protein as the preprotein. An example: prelysozyme becomes lysozyme when the SP is removed. 3. Describe the journey of a protein, starting from the inside of the nucleus, and ending outside the cell. Step 1 Step 2 Step 3 Step 4 4. In what kinds of systems are there multiple signals? Also, give an example and describe one. System: Multiple membrane system. Example: Mitochondrion enter matrix (M) via receptor and remove targeting signal with signal peptidase. e.g. DHFR enter inter membrane space (IMS) via receptor and remove spacer sequence. e.g.cytochrome Example 2 : Chloroplast IMS M...
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