Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 8, Problem 15RQ
Summary Introduction
To determine:
The difference between protein transported by twin-arginine translocase (TAT) and other exported proteins.
Introduction:
The transport of tertiary or quaternary protein is regulated by twin-arginine translocase (TAT). It is a membrane-embedded transporter complex. This complex transports the higher protein into the periplasmic space. It is a secretion or export pathway present in plants and in Archaea. In plants, TAT translocase is found in the thylakoid membrane while in bacteria, it is found in the cytoplasmic membrane. TatA, TatB, and TatC are three essential membrane proteins that form TAT translocase.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
List five proteins that interact with the CFTR protein.
What amino acid residues are phosphorylated on the intracellular domain of a VEGFR?
What amino acid residues are phosphorylated on the intracellular domain of a VEGFR?
Glutamic Acid
Serine
Tyrosine
Valine
1. Peroxisomes are organelles surrounded by a single membrane. Soluble proteins that
reside within peroxisomes are imported post-translationally, and they often contain
the C-terminal tripeptide SKL (serine-lysine-leucine).
a) How would you confirm that a C-terminal SKL tripeptide is a peroxisomal
targeting signal?
b) If cells were engineered to produce a hybrid protein consisting of a mitochondrial
matrix protein (including its signal sequence) followed by a C-terminal SKL
signal, where in the cell would you expect the hybrid protein to be found? Explain
your reasoning.
Chapter 8 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 8.1 - Prob. 1TQCh. 8.1 - Prob. 2TQCh. 8.1 - Prob. 3TQCh. 8.3 - Prob. 1TQCh. 8.3 - Prob. 2TQCh. 8.3 - Prob. 3TQCh. 8.3 - Prob. 4TQCh. 8.3 - Prob. 5TQCh. 8.3 - Prob. 6TQCh. 8.3 - Prob. 7TQ
Ch. 8.3 - Prob. 8TQCh. 8.6 - Prob. 1TQCh. 8 - Prob. 1RQCh. 8 - Prob. 2RQCh. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQCh. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Prob. 13RQCh. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - Prob. 17RQCh. 8 - Prob. 1TQCh. 8 - Prob. 2TQCh. 8 - Prob. 3TQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A gene contains the sequence CGCATACGGTAC that results in the amino acid sequence arg-ile-arq- tyr. A mutation in this gene has a G inserted after the second C in the strand. How will this mutation affect the phenotype? A)This will affect the phenotype because although most of the protein will be identical, the first amino acid will be different. B)This will not affect the phenotype because only the second amino acid is different from the original protein. C)This will not affect the phenotype because the protein will be identical to the original protein. D)This will affect the phenotype because all of the amino acids after the first one will be different from the original protein.arrow_forwardNeurospora crassa can synthesize the amino acid arginine from a precursor as follows: precursor ornithine citrulline arginine George Beadle and Edward Tatum identified various mutants (arg mutants) unable to synthesize arginine from this precursor. One such class (Class I) could synthesize arginine if either ornithine or citrulline was supplied. A second mutant class (Class II) could synthesize arginine if citrulline was added, but not if ornithine was added. A third class (Class III) could not synthesize arginine from either ornithine or citrulline. Which class or classes of arg mutants will grow on complete media?arrow_forwardWhat is mechanism of intein splicing to join P1 and P2 ? Which steps are reversible and which ones aren’t ?arrow_forward
- What secondary structures are most prevalent in SHBG protein?arrow_forwardNeurospora crassa can synthesize the amino acid arginine from a precursor as follows: precursor ornithine - citrulline arginine George Beadle and Edward Tatum identified various mutants (arg mutants) unable to synthesize arginine from this precursor. One such class (Class I) could synthesize arginine if either ornithine or citrulline was supplied. A second mutant class (Class II) could synthesize arginine if citrulline was added, but not if ornithine was added. A third class (Class II) could not synthesize arginine from either ornithine or citrulline. Which class or classes of arg mutants LACK a functional enzyme able to convert ornithine into citrulline?arrow_forwardConsider the now dominant variant of the SARS-CoV-2 called the D614G mutation: a) The mutation changes an Aspartate (D, Asp) to a Glycine (G, Gly) at nucleotide position 614 (that’s why it’s called the D614G mutant) in the S1 subunit of the Spike protein. Using only the information above and a codon table, what are the mRNA codon sequences of the 2019-dominant and 2020-dominant Spike proteins? Note the figure above is not needed toanswer the question. Report in 5’ to 3' orientation __________________________________________ b) What type of substitution is this? In your answer, address the following: • The expected substitution in base sequence (e.g., A à C)• If the mutation is synonymous, nonsynonymous, or a frameshift• If the mutation is a transition or a transversion c) The mutation increases infectivity by reducing the stability of the Spike protein such that it can remain in the open conformation more often. The open conformation increases the chances of binding to the host ACE2…arrow_forward
- Why is the pKa of the arginine side chain greater than the pKa of the lysine side chain?arrow_forwardIf an extra nucleotide is inserted in the first exon of the beta globin gene, what effect will it have on the amino acid sequence of the globin polypeptides? Will the globin most likely be fully functional, partly functional, or nonfunctional? Why?arrow_forwardEach type of molecule listed below is recognized by a specific class of nuclear import receptor (importin) or nuclear export receptor (exportin). For each type of molecule, state whether you think it is recognized by an importin or exportin and explain why (in terms of where that molecule is synthesized, what that molecule does, and where it does it). (a) RNA polyermase II: (b) ribosomal protein: (iii) †RNA:arrow_forward
- Researchers have been determining the nucleotide sequences of variant forms of SARS-CoV-2, looking for versions of the virus that might be more easily transmitted between humans or that might be more deadly. (a) For example, one mutation in a viral gene changed a GAU codon to a GGU codon. How does this change affect the sequence of the polypeptide encoded by that gene? (b) In another variant form of the virus, a gene is missing six consecutive nucleotides. How would this change affect the sequence of the polypeptide encoded by that gene? (c) In another coronavirus variant, the spike protein (the prominent protein on the surface of the virus) contains a histidine residue where an aspartate (aspartic acid) residue should be. Describe a point mutation in the coronavirus genome that could have caused this change in the spike protein.arrow_forwardA normal hemoglobin protein has a glutamic acid at position 6; in sickle-cell hemoglobin, this glutamic acid has been replaced by a valine. List all the possible mRNA codons that could be present for each type of hemoglobin. Can a single base change result in a change from Glu to Val in hemoglobin?arrow_forwardWhat are the major differences between one-stepand two-step translocases? Which are used to secreteproteins into other cells?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
QCE Biology: Introduction to Gene Expression; Author: Atomi;https://www.youtube.com/watch?v=a7hydUtCIJk;License: Standard YouTube License, CC-BY