The sequence Leu-Val-Leu-Glu-Phe-Met-Ile-Thr is most compatible with which of the following protein structures? A) coiled coil...
The sequence Leu-Val-Leu-Glu-Phe-Met-Ile-Thr is most compatible with which of the following protein structures?
A) coiled coil
B) solitary transmembrane helix
C) curved transmembrane beta sheet
D) Helix in a multihelix transmembrane channel
Homework Answers
The correct answer is Coiled coil.
Coiled coil consists of 2-7 alpha-helices which are coiled together. These coils usually comprise in repeated pattern of hydrophobic and charged amino acids. The first position is usually occupied by hydrophobic amino acids like isoleucine, leucine, valine etc. and rest positions are occupied by charged amino acids.
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The sequence Leu-Val-Leu-Glu-Phe-Met-Ile-Thr is most compatible
with which of the following protein structures?
A) coiled coil...
Please answer thoroughly, will rate thumbs up. thanks Q1. Consider the following protein sequence: Leu-Lys-Val-Asp-Ile-Ser-Leu-Arg-Leu-Lys-Ile-Arg-Phe-Glu. What...
Please answer thoroughly, will rate thumbs up. thanks Q1. Consider the following protein sequence: Leu-Lys-Val-Asp-Ile-Ser-Leu-Arg-Leu-Lys-Ile-Arg-Phe-Glu. What is special about the arrangement of the amino acids in these sequences when incorporated into a Beta sheet? What prediction can you make about how this Beta sheet might be arranged in a cytoplasmic protein. Q2. Consider the following protein sequence as an Alpha-helix: Leu-Lys-Arg-Ile-Val-Asp-Ile-Leu-Ser-Arg-Leu-Phe-Lys-Val. What is special about the arrangement of the amino acids in these sequences when folded into alpha helix?
Met-Ala-Arg-Tyr-Ala-Asn-Asn-Glu__Lys-Glu-Leu-Leu-Tyr__Arg-Tyr-Ala-Asn__Phe-Leu-Ala-Asn-Asn-Ile-Gly-Ala-Asn__Ile-Ser__Ile-Asn-Thr-Glu-Arg-Glu-Ser-Thr-Glu-Asp__Ile-Asn__ His-Glu-Arg__Phe-Ala-Thr-His-Glu-Arg-Ser__Thr-Arg-Ile-Gly-Leu-Tyr-Cys-Glu-Arg-Ile-Asp-
Met-Ala-Arg-Tyr-Ala-Asn-Asn-Glu__Lys-Glu-Leu-Leu-Tyr__Arg-Tyr-Ala-Asn__Phe-Leu-Ala-Asn-Asn-Ile-Gly-Ala-Asn__Ile-Ser__Ile-Asn-Thr-Glu-Arg-Glu-Ser-Thr-Glu-Asp__Ile-Asn__ His-Glu-Arg__Phe-Ala-Thr-His-Glu-Arg-Ser__Thr-Arg-Ile-Gly-Leu-Tyr-Cys-Glu-Arg-Ile-Asp-Glu__Leu-Glu-Val-Glu-Leu-Ser__Ser-Ile-Asn-Cys-Glu__His-Glu-__His-Ala-Pro-Pro-Ile-Leu-Tyr__Glu-Ala-Thr-Ser__Val-Ala-Asn-Ile-Leu-Leu-Ala__Cys-Ala-Lys-Glu-__Ala-Asn-Asp__Pro-Glu-Cys-Ala-Asn__Pro-Ile-Glu__Trp-Ile-Thr-His__Phe-Arg-Ile-Glu-Asp__Cys-His-Glu-Glu-Ser-Glu-Cys-Ala-Lys-Glu__Ile-Cys-Glu__Cys-Arg-Glu-Ala-Met__Glu-Val-Glu-Arg-Tyr-Asp-Ala-Tyr__Ala-Asn-Asp__Ser-His-Glu__Ile-Ser__Asp-Glu-Val-Ala-Ser-Thr-Ala-Thr-Glu-Asp__Thr-His-Ala-Thr__Asp-Ile-Ser-Glu-Ala-Ser-Glu-Ser__Leu-Ile-Lys-Glu__His-Glu-Ala-Arg-Thr__Asp-Ile-Ser-Glu-Ala-Ser-Glu__Ser-Leu-Glu-Glu-Pro__Ala-Pro-Asn-Glu-Ala__Ser-Glu-Val-Glu-Arg-Glu__Trp-Glu-Ile-Gly-His-Thr__Gly-Ala-Ile-Asn__Trp-Ile-Leu-Leu__Ala-Arg-Ile-Ser-Glu__Ile-Phe__His-Glu__Lys-Glu-Glu-Pro-Ser__Thr-His-Ile-Ser__Glu-Ala-Thr-Ile-Asn-Gly__Pro-Ala-Thr-Thr-Glu-Arg-Asn__Tyr-Glu-Thr__Ile-Phe__His-Glu__Trp-Trp-Trp-Trp-Ile-Ile-Ile-Ile-Ile-Leu-Leu-Leu-Leu-Leu-Ser-Ser-Ser-Ser__Cys-His-Ala-Asn-Gly-Glu__Ile-Asn__His-Ile-Ser__Leu-Ile-Phe-Glu-Ser-Thr-Tyr-Leu-Glu__His-Glu__Cys-Ala-Asn__Ser-Thr-Ile-Leu-Leu__Arg-Glu-Met-Ala-Ile-Asn__His-Glu-Ala-Leu-Thr-His-Tyr__Ser-Ala-Ser-Ser-Tyr__Ala-Asn-Asp__Ala-Leu-Arg-IleGly-His-Thr 1.) Write out the 1 letter amino acid abbreviation for each of the three-letter amino acid abbreviated words listed in the given sequence. The __ indicates a space in between the words. Use www.expasy.org and other bioinformatic tools to generate the following bioinformatic data for the given polypeptide sequence. You must give the name and link to the program you used to generate the data: 2.) Compute the pI and Mw (isoelectric point and molecular mass, respectively) of...
A protein has the following N-terminal sequence and the following organization of signal/stop/start sequences. Met-Lys-Trp-Val-Thr-Phe-Leu-Leu-Leu-Leu-Phe-Ile-Ser-Gly-Ser-Ala-Phe-Ser-Arg-… i)...
A protein has the following
N-terminal sequence and the following organization of
signal/stop/start sequences.
Met-Lys-Trp-Val-Thr-Phe-Leu-Leu-Leu-Leu-Phe-Ile-Ser-Gly-Ser-Ala-Phe-Ser-Arg-…
i) What is the topology of this protein in the cell membrane?
The red segments correspond to either signal sequences or stop
transfer sequences. The orange segments correspond to start
transfer sequences
ii) What is the N-terminal sequence of the protein, after
processing
iii) Is this a eukaryotic or prokaryotic protein? Why?
Signal Stop Start Stop Start
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D....
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D. Val-Asp-Ile-Glu-Arg 11. Which of the following describes the entire three- dimensional structure of a single polypeptide? A. Secondary structure B. Quaternary structure C. Tertiary structure D. Primary structure 12. What is the primary driving force in the formation of protein tertiary structure? A. Energy released when additional ion pairs are formed. B. The exclusion of non-polar substances from aqueous solution. C. The formation of...
A bacterium produces a normal protein with the following amino acid sequence : MET-VAL-HIS-LYS-ARG-THR-LEU-VAL-GLU After irradiation,...
A bacterium produces a normal protein with the following amino acid sequence : MET-VAL-HIS-LYS-ARG-THR-LEU-VAL-GLU After irradiation, a mutant strain is produced that makes a mutant protein from the same codin MET-VAL-HIS-LYS-LYS-ASN-LEU-SER-stop Show the DNA mutation that could have occurred to lead to this protein product site on DNA: e hnRNA sequence of a novel gene encodinaf
Which of these protein sequences is most likely to span a cell membrane? Gly-Asp-Val-Ala-Gly-Arg-Gly-Asn-Gly-Lys-Lys-Pro-Ser-Ser-Val-Arg-Ala-Leu-Ser Ile-Val-Leu-Pro-Ile-Val-Leu-Leu-Val-Phe-Leu-Cys-Leu-Gly-Val-Phe-Leu-Leu-Trp Lys-Asn-Trp-Arg-Leu-Lys-Asn-I
Which of these protein sequences is most likely to span a cell
membrane?
Gly-Asp-Val-Ala-Gly-Arg-Gly-Asn-Gly-Lys-Lys-Pro-Ser-Ser-Val-Arg-Ala-Leu-Ser Ile-Val-Leu-Pro-Ile-Val-Leu-Leu-Val-Phe-Leu-Cys-Leu-Gly-Val-Phe-Leu-Leu-Trp Lys-Asn-Trp-Arg-Leu-Lys-Asn-Ile-Asn-ser-Ile-Asn-Phe-Asp-Asn-Pro-Val-Tyr-Gln A. 773 B. 792 C. 811
"A protein is made from a messenger RNA of the following sequence. What is the sequence...
"A protein is made from a messenger RNA of the following sequence. What is the sequence of amino acids for this protein? (Remember, a start and a stop codon are needed for a protein to be made). 3' G C C G A U G G A U G A A G U U U U A A A G U A A U A G C A A U G G A G G A C 5'" (amino) met...
PLEASE SHOW ALL WORK A protein segment of sequence Phe Cys Gly Val Leu His Lys...
PLEASE SHOW ALL WORK A protein segment of sequence Phe Cys Gly Val Leu His Lys Met Glu Thr. Design a 15 base oligonucleotide that could be used to change His residue to Ala residue via side directed mutageneses
repulsion within the protein 10. Which of the following amino acids do not contain a chiral...
repulsion within the protein 10. Which of the following amino acids do not contain a chiral carbon? a. Proline b. Alanine c. Glycine d. Phenylalanine e. Tyrosine 11. You want to determine an amino acid sequence for a particular polypeptide. So you degrade the peptid and get the following fragments. Determine the peptide sequence. Digested with typsin: Met-Val-Ser-Thr-Lys Val-lle-Trp-Thr-Leu-Met-lle Leu-Phe-Asn-Glu-Ser-Arg Digested with chymotrypsin: Asn-Glu-Ser-Arg-Val-lle-Trp Thr-Leu-Met-lle Met-Val-Ser-Thr-Lys-Leu-Phe a. Val-lle-Trp-Thr-Leu-Met-lle-Leu-Phe-Asn-Glu-Ser-Arg-Met-Val-Ser-Thr-Lys b. Val-lle-Trp-Thr-Leu-Met-lle-Met-Val-Ser-Thr-Lys-Leu-Phe-Asn-Glu-Ser-Arg c. Leu-Phe-Asn-Glu-Ser-Arg-Met-Val-Ser-Thr-Lys-Val-lle-Trp-Thr-Leu-Met-le d. Met-Val-Ser-Thr-Lys-Leu-Phe-Asn-Glu-Ser-Arg-Val-le-Trp-Thr-Leu-Met-lle e. Met-Val-Ser-Thr-Lys-Val-lle-Trp-Thr-Leu-Met-lle-Leu-Phe-Asn-Glu-Ser-Arg
If the sequence Met-Lys-Glu-Ala-Phe-Leu-Gln is folded into an α-helix, the amino acid whose carbonyl group interacts...
If the sequence Met-Lys-Glu-Ala-Phe-Leu-Gln is folded into an α-helix, the amino acid whose carbonyl group interacts with the amide hydrogen of Gln would be: A. Glu B. Ala C. Phe D. Leu E. Lys The answer is A. can you explain the answer
A protein has the following
N-terminal sequence and the following organization of
signal/stop/start sequences.
Met-Lys-Trp-Val-Thr-Phe-Leu-Leu-Leu-Leu-Phe-Ile-Ser-Gly-Ser-Ala-Phe-Ser-Arg-…
i) What is the topology of this protein in the cell membrane?
The red segments correspond to either signal sequences or stop
transfer sequences. The orange segments correspond to start
transfer sequences
ii) What is the N-terminal sequence of the protein, after
processing
iii) Is this a eukaryotic or prokaryotic protein? Why?
Signal Stop Start Stop Start
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D. Val-Asp-Ile-Glu-Arg 11. Which of the following describes the entire three- dimensional structure of a single polypeptide? A. Secondary structure B. Quaternary structure C. Tertiary structure D. Primary structure 12. What is the primary driving force in the formation of protein tertiary structure? A. Energy released when additional ion pairs are formed. B. The exclusion of non-polar substances from aqueous solution. C. The formation of...
A bacterium produces a normal protein with the following amino acid sequence : MET-VAL-HIS-LYS-ARG-THR-LEU-VAL-GLU After irradiation, a mutant strain is produced that makes a mutant protein from the same codin MET-VAL-HIS-LYS-LYS-ASN-LEU-SER-stop Show the DNA mutation that could have occurred to lead to this protein product site on DNA: e hnRNA sequence of a novel gene encodinaf
Which of these protein sequences is most likely to span a cell
membrane?
Gly-Asp-Val-Ala-Gly-Arg-Gly-Asn-Gly-Lys-Lys-Pro-Ser-Ser-Val-Arg-Ala-Leu-Ser Ile-Val-Leu-Pro-Ile-Val-Leu-Leu-Val-Phe-Leu-Cys-Leu-Gly-Val-Phe-Leu-Leu-Trp Lys-Asn-Trp-Arg-Leu-Lys-Asn-Ile-Asn-ser-Ile-Asn-Phe-Asp-Asn-Pro-Val-Tyr-Gln A. 773 B. 792 C. 811
repulsion within the protein 10. Which of the following amino acids do not contain a chiral carbon? a. Proline b. Alanine c. Glycine d. Phenylalanine e. Tyrosine 11. You want to determine an amino acid sequence for a particular polypeptide. So you degrade the peptid and get the following fragments. Determine the peptide sequence. Digested with typsin: Met-Val-Ser-Thr-Lys Val-lle-Trp-Thr-Leu-Met-lle Leu-Phe-Asn-Glu-Ser-Arg Digested with chymotrypsin: Asn-Glu-Ser-Arg-Val-lle-Trp Thr-Leu-Met-lle Met-Val-Ser-Thr-Lys-Leu-Phe a. Val-lle-Trp-Thr-Leu-Met-lle-Leu-Phe-Asn-Glu-Ser-Arg-Met-Val-Ser-Thr-Lys b. Val-lle-Trp-Thr-Leu-Met-lle-Met-Val-Ser-Thr-Lys-Leu-Phe-Asn-Glu-Ser-Arg c. Leu-Phe-Asn-Glu-Ser-Arg-Met-Val-Ser-Thr-Lys-Val-lle-Trp-Thr-Leu-Met-le d. Met-Val-Ser-Thr-Lys-Leu-Phe-Asn-Glu-Ser-Arg-Val-le-Trp-Thr-Leu-Met-lle e. Met-Val-Ser-Thr-Lys-Val-lle-Trp-Thr-Leu-Met-lle-Leu-Phe-Asn-Glu-Ser-Arg
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