Of the amino acids below, which are most hydrophobic? Asp Glu and Arg Leu Iso and...
Of the amino acids below, which are most hydrophobic?
Asp Glu and Arg
Leu Iso and Phe
Cys Gly and Pro
Arg Asp and Asn
Homework Answers
Leu, Iso and Phe are the most hydrophobic amino acids.
Explanation :- Hydrophobicity of amino acid is determined by based
on their side chain or R groups. These are the structure of leu,
Iso and phe.
Due to presence of nonpolar side chains, these hydrophobic amino acids do not like to reside in an aqueous environment. Their side chains have no polarity, due to lack of polarity they do not interact with highly polar water molecules so these amino acids are mostly buried in the hydrophobic core of the protein. Out of 20 standard amino acids, nine are hydrophobic, these mentioned three amino acids leucine, isoleucine and phenylalanine are also included among them.
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Of the amino acids below, which are most hydrophobic?
Asp Glu and Arg
Leu Iso and...
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
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...
How many amino acids are there in the disease causing variant of the Amyloid-beta (Ab) peptide?...
How many amino acids are there in the disease causing variant of
the Amyloid-beta (Ab) peptide?
Determine which of these four peptides is most likely to become a beta sheet. Lys-Thr-Val-Ile-Trp-Pro-Phe-Tyr-Ile-Gln-Ile-Gly Arg-Ser-Tyr-Glu-Gly-Leu-Lys-Arg-Ile-Ala-Glu-Ser Ala-Glu-Met-Leu-Gln-Lys-Arg-Gly-Cys-Gly-Asp-Glu Met-Leu-Lys-Ala-Ser-Ala-Leu-Glu-Lys-Leu-Ser-Glu
6. Translate the following amino acid sequence into one-letter code: Leu-Glu-Ala-Arg Asn-le-Asn-Gly-Ser-Cys-lle-Glu-Asn-Cys-Glu-le-Ser-Gly-Arg-Glu-Ala-Thr.
6. Translate the following amino acid sequence into one-letter code: Leu-Glu-Ala-Arg Asn-le-Asn-Gly-Ser-Cys-lle-Glu-Asn-Cys-Glu-le-Ser-Gly-Arg-Glu-Ala-Thr.
. Insulin (below) is treated with dansyl chloride followed by its complete acidic hydrolysis. Which of the following da...
. Insulin (below) is treated with dansyl chloride followed by its complete acidic hydrolysis. Which of the following dansylated amino acids you expect to observe? A chain Gly-Ile-Val-Glu-Gln-Cys-Cys- Ala-Ser-Val - Cys-Ser-Leu- Tyr-Gln-Leu-Glu-Asn - Tyr-Cys- Asn 10 15 21 B chain Phe-Val - Asn-Gln-His-Leu-Cys-Gly-Ser-His-Leu-Val-Glu - Ala-Leu-Tyr-Leu-Val-Cys-Gly-Glu-Arg-Gly-Phe-Phe-Tyr-Thr-Pro-Lys - Ala 10 20 25 30 15
Which amino acids comprise the binding site for PGE A 601?
For 4F5S in RCSB PDB websiteWhich amino acids comprise the binding site for PGE A 601? Select all that apply ValAspTrplleSerGlyPheHisProLeuLysCysAlaAsnMetTyrThreGurArgGin
3. (2 Points) Give the one-letter equivalents for all amino acids in the following sequence and...
3. (2 Points) Give the one-letter equivalents for all amino acids in the following sequence and circle the residues most likely to bind to a hard transition-metal ion: Ile-Pro-Arg-Glu-Phe-Glu-Arg-Cys-Ala-Asp-Ile-Ser-Leu-Ile-Lys-Glu-His-Gly
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...
3. A protein contains the following amino acids: O ALA 4 GLN 1 LEU 3 ARG...
3. A protein contains the following amino acids: O ALA 4 GLN 1 LEU 3 ARG 4 GLU 4 LYS 4 ASN 5 GLY O MET 1 ASP 1 HIS 2 PHE 4 ILE 4 PRO 8 SER 5 THR 1 TRP 2 TYR 2 VAL BGYS. a) What is its net charge at pH 1? b) What is its net charge at PH 13? c) Calculate the pl. 4. In what order would the amino acids GLU, LYS, and...
An octapeptide contains the following amino acids: Met, Thr, Cys, Asp, Phe, Arg, Glu, Gln. Carboxypeptidase...
An octapeptide contains the following amino acids: Met, Thr, Cys, Asp, Phe, Arg, Glu, Gln. Carboxypeptidase treatment of the octapeptide forms Asp and a heptapeptide. Treatment of the octapeptide with Chymotrypsin forms forms two tetrapeptides, A and B. Treatment of A with Trypsin yields two dipeptides, C and D. Edman degradation cleaves the following amino acids from each peptide: Cys (octapeptide), Cys (A), Gln (B), Cys (C), Glu(D). Partial hydrolysis of tetrapeptide B forms Gln-Thr in addition to other products....
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
How many amino acids are there in the disease causing variant of
the Amyloid-beta (Ab) peptide?
Determine which of these four peptides is most likely to become a beta sheet. Lys-Thr-Val-Ile-Trp-Pro-Phe-Tyr-Ile-Gln-Ile-Gly Arg-Ser-Tyr-Glu-Gly-Leu-Lys-Arg-Ile-Ala-Glu-Ser Ala-Glu-Met-Leu-Gln-Lys-Arg-Gly-Cys-Gly-Asp-Glu Met-Leu-Lys-Ala-Ser-Ala-Leu-Glu-Lys-Leu-Ser-Glu
6. Translate the following amino acid sequence into one-letter code: Leu-Glu-Ala-Arg Asn-le-Asn-Gly-Ser-Cys-lle-Glu-Asn-Cys-Glu-le-Ser-Gly-Arg-Glu-Ala-Thr.
. Insulin (below) is treated with dansyl chloride followed by its complete acidic hydrolysis. Which of the following dansylated amino acids you expect to observe? A chain Gly-Ile-Val-Glu-Gln-Cys-Cys- Ala-Ser-Val - Cys-Ser-Leu- Tyr-Gln-Leu-Glu-Asn - Tyr-Cys- Asn 10 15 21 B chain Phe-Val - Asn-Gln-His-Leu-Cys-Gly-Ser-His-Leu-Val-Glu - Ala-Leu-Tyr-Leu-Val-Cys-Gly-Glu-Arg-Gly-Phe-Phe-Tyr-Thr-Pro-Lys - Ala 10 20 25 30 15
3. (2 Points) Give the one-letter equivalents for all amino acids in the following sequence and circle the residues most likely to bind to a hard transition-metal ion: Ile-Pro-Arg-Glu-Phe-Glu-Arg-Cys-Ala-Asp-Ile-Ser-Leu-Ile-Lys-Glu-His-Gly
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