SRP binds to the ER signal on growing polypeptide chain. ribosome starts translating mRNA at the start codon SRP binds to its receptor on the rough endoplasmic reticulum (RER). Translation resumes, threading the polypeptide through channel in RER Translation pauses. SRP-receptor brings ribosome to a channel in RER and SRP leaves Signal sequence is cleaved. > >

SRP binds to the ER signal on growing polypeptide chain. ribosome starts translating mRNA at the start codon SRP binds to its receptor on the rough endoplasmic reticulum (RER). Translation resumes, threading the polypeptide through channel in RER Translation pauses. SRP-receptor brings ribosome to a channel in RER and SRP leaves Signal sequence is cleaved. > >

Name: list from 1-10, event that occurs first to last SRP binds to the ERsig
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Description: list from 1-10, event that occurs first to last SRP binds to the ERsignal on growingpolypeptide chain.ribosome startstranslating mRNA atthe start codonSRP binds to itsreceptor on the roughendoplasmicreticulum (RER).Translation resumes,threading thepo

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter7: Gene Expression And Control

Section: Chapter Questions

Problem 15SQ

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gene normally contains an N' terminal ER signal sequence and an internal stop transfer sequence. The ER signal sequence is recognized and used during the protein trafficking process, as normal. After translation is completed a signal peptidase enzyme cleaves the N' ER signal sequence but the internal sequence is not cleaved. Which of the following figures best represents the orientation of the protein product after translation? N Extracellular Extracellular Extracellular Extracellular -N' C' N Lumen Lumen Lumen Lumen N' A В C
RIPs as Cancer Drugs Researchers are taking a page from the structure-function relationship of RIPs in their quest for cancer treatments. The most toxic RIPs, remember, have one domain that interferes with ribosomes, and another that carries them into cells. Melissa Cheung and her colleagues incorporated a peptide that binds to skin cancer cells into the enzymatic part of an RIP, the E. coli Shiga-like toxin. The researchers created a new RIP that specifically kills .skin cancer cells, which are notoriously resistant to established therapies. Some of their results are shown in FIGURE 9.17. FIGURE 9.17 Effect of an engineered RIP on cancer cells. The model on the left shows the enzyme portion of E. coli Shiga-like toxin engineered to carry a small sequence of amino acids (in blue) that targets skin cancer cells. (Red indicates the active site.) The graph on the right shows the effect of this engineered RIP on human cancer cells of the skin (); breast () liver (); and prostate (). Which cells had the greatest response to an increase in concentration of the engineered RIP?
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The ribosomes ratchet back and forth with every pt'ase reaction in order to move the tRNAS and the mRNA into the next positions O True O False Previo
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The ribosomes ratchet back and forth with every pt'ase reaction in order to move the tRNAS and the MRNA into the next positions True False
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