Which of these amino acids (when incorporated in the primary structure of an enzyme) would NOT make a good nucleophilic catalyst?
a. |
Ala |
|
b. |
His |
|
c. |
Ser |
|
d. |
Lys |
|
e. |
Cys |
Among the given amino acids, when incorporated in the primary structure of an enzyme, alanine that contains a methyl group would not make a good nucleophilic catalyst.
So, the correct option is, a) Ala
Which of these amino acids (when incorporated in the primary structure of an enzyme) would NOT...
A small generic section of the primary structure of an alpha helix is given below -amino acid1-amino acid2-amino acid3-amino acid4-amino acid5-amino acid-6-amino acid7- a.) which amino acid residue's backbone forms a hydrogen bond witht he backbone of the seventh(7th) residue? 6, 1, 3, 2, 5, OR 7? b.) which of the following peptide segments is most likely to be part of a stable alpha helix at physiological pH? a.) -Lys-Lys-Ala-Arg-Ser- b.) -Gly-Arg-Lys-His-Gly- c.) -Pro-Leu-Thr-Pro-Trp- d.) -Gly-Gly-Gly-Ala-Gly- e.) -Glu-Glu-Glu-Glu-Glu- f.) -Glu-Leu-Ala-Lys-Phe-...
For 4F5S in RCSB PDB websiteWhich amino acids comprise the binding site for PGE A 601? Select all that apply ValAspTrplleSerGlyPheHisProLeuLysCysAlaAsnMetTyrThreGurArgGin
A small generic section of the primary structure of an α helix is given by −amino acid1−amino acid2−amino acid3−amino acid4−amino acid5−amino acid6−amino acid7− Which amino acid residue's backbone forms a hydrogen bond with the backbone of the third (3rd) residue? Which peptide segment is most likely to be part of a stable α helix at physiological pH ? −Glu−Leu−Ala−Lys−Phe− −Gly−Arg−Lys−His−Gly− −Gly−Gly−Gly−Ala−Gly− −Pro−Leu−Thr−Pro−Trp− −Lys−Lys−Ala−Arg−Ser− −Glu−Glu−Glu−Glu−Glu− −Tyr−Trp−Phe−Val−Ile−
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
Below are pairs of amino acids that interact with each other via their R groups to maintain protein structure. Which will experience a change in their R-group interaction (eithera gain, loss or change specific type of interaction) when placed in a basic (pH 10) environment? (Select any/all that apply) Val, Ala GIn, Ser Asn, Cys Asp, Arg 1 nts
Below are pairs of amino acids that interact with each other via their R groups to maintain protein structure. Which will...
6. The following polypeptide (30 amino acids) contains a great deal of regular secondary structure. (10) (15) (20) lys Lys Ala-Phe-Trp-Met-His- GIh-Thr-lle-Arg-Ser-Gly-Ala-Gly-Ser-Gly-Ala-Trp-Tyr-Pro-Val-Ala (30) Phe-Met-Leu-Val-Pro-Glu-Glu There are at least two regions where alpha helical structure is found. Indicate the beginning and ending residues of these regions. Any group or groups which break the alpha helical structure should not be considered part of the helix. Remember that it take four residues to give a turn of an alpha helix, so that is...
Explain this question please!
Name (4 ofer to the Table of Amino Acids at the beginning of the exam to help solve this problem. Polypeptide I is a 12-mer and has the following amino acid composition: Ala, Arg, 2 His, Leu, 2 Lys, 2 Phe, Ser, Thr, Trp Edman degradation of I shows that its N-terminal amino acid is His. Chymotrypsin cleavage of I yields peptide fragments A-D.Trypsin cleavage of I gives peptide fragments E-G. Shown below is the amino...
Some amino acids are post-translationally removed from the
C-terminal end of the beta-lactamase enzyme from B.
imaginarium (i.e. - after it is translated and
released from the ribosome, a protease chews off a some amino
acids). The wild-type enzyme, which has had the amino
acids removed from the C’-terminus, is 246 amino acids in length
and the C-terminal amino acids are shown below aligned with the
C-terminal amino acids of a frameshift mutant, which – due to a
frameshift mutation -...
Question 5 3 pts Which amino acids would you find glycosylated in proteins (either N-linked or O-linked)? Asn Ser Thr Ala O His O Lys Arg Asp Glu
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