What is the pI of the following amino acid?
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What is the pI of the following amino acid? Testbank, Question 042 What is the pl...
(1) The following diagram represents a titration curve of histidine as pH increases; pKa = 1.82 represents the terminal carboxylic acid group. pK, represents the terminal amino group: 6.0 represents the R-group, and pK, E 9.17 7.59 pH 182 3.0 20 10 H (equivalents) At what point on the diagram is histidine predominantly present as the following species? COO A, at pH < 1.82 B. between pH 1.82 and pH 6.0 C) between pH 6.0 and pH 9.17 D. at...
Which of the following describes the pI of an amino acid? Select one: Oa. the pH at which the amino acid is primarily in the zwitterion form b. the pH at which there are equal concentrations of protonated and neutral forms c, the negative log of the concentration of the ionized amino acid d. the pH of the buffer solution used in electrophoresis that causes the amino acid to migrate to the positive electrode 0 O
SIMULATION Zwitterions amino acid P PK PA PA f pr (-CO,H) NHj) (side chain) O Glycine 5.97 2.34 9.6 O Valine O Serine O Proline O Aspartic acad 2.77 1.89 960 3.65 O Lysine 5.97 2.32 9.61 5.68 221 9.15 6.48 199 1096 Net Charge 9.74 2.18 8.95 10.52 Major Fors 8 1 pt 4 pH-7.00 1pt Run Choose aspartc acd as the amimo acid At what pit does aupartic acid have no net charge 15 1p Recheck ( of...
5. What is the pl of the following amino acid? a) 1.2 b) 3.2 c) 5.5 d) 6.2 e) 7.0 NH2 pKal 2.4pKa2-10.0 pKa3-4.0 R group α-NH
Testbank, Question 100 Which of the following reagents is used to protect the amino group in the selective synthesis of the dipeptide Ala-val? O CI II III IV 1 II 11 TV Question Attempts: 0 DOLL 912 FVD F7 FB FO FS F4 P 2 F2 F3 AN A & % 0 a # $ 4 7 8 U 5 2 3 C R T Y W E к J H G F D 1 S < N M B...
Q1) Based on your understanding of amino acid and protein topic answer the following questions. [20 points A) For the following tripeptide: Ala-Gly-Phe O Od -CH -OH CH CH Ala Gly Phe pKI 234 2.34 1.83 pK2 9.67 9.60 9.13 1. Draw separate structures for the three amino acids in this tripeptide at pH=7. 9 points) 2. Calculate the pl for this tripeptide (show your work and your answer should has two decimal points) (6 points) 3. What is the...
i have no clue what amino acid this unknown is . maybe serine ?? pleade help! i also need to locate the eq points it can be from 1-3 points but atleasy 2 , the pka2 location , and the expermental molecular weight value. if you can label it on one of the graphs ( they are the same) the chocies are below ( it most likely will not be glycine ) . other data: unknown weight obtained was =...
Name Standard Reduction Potentials of Some Biologically Important Half-Reactions TABLE 13-7 Amino acids pki k2 pkR Half-reaction 2.34 9.60 2.34 9.69 1.99 10.96 2.32 9.62 2.36 9.60 2.36 9.68 Ubiquinone + 2H+ + 2e-→ ubiquinol + H: 0.045 Fumarate:-+ 2H. + 2e-→ succinate"- 2H+ + 2e-→ H2 (at standard conditions, pH 0) 0.000 Crotonyl-CoA+2H +2butyryl-CoA0.015 Oxaloacetate:-+ 2H+ + 2e-→ malate"--0.166 Pyruvate +2H2elactate Acetaldehyde + 2H+ + 2e-→ ethanol FAD +2HFADH2 Glutathione + 2H+ + 2e- Alanine Proline 0.031 228 921...
nent Testbank Question 98 What would be the major product of the following reaction? H OH HO heat (-H,0) ? H OH "H OH ОН III Н H TV P2000-2020 John Wiley Sons, Inc. All Rights Reserved. A Division of John Wiley & Sons, Inc. here to search O
#1) For the following pentapeptide (Where pH =1): a) What would the net charge be for the following pH? pH 0 = pH 3 = pH 5 = pH 7 = pH 10 = pH 13 = b) Calculate the pl of the pentapeptide. (Cysteine: pK1 = 1.96, pK2 = 10.128) ( Glutamine: pK1 = 2.17 , pK2 = 9.13) (Arginine: pK1 = 2.17. pK2 = 9.04) (Leucine: pK1 = 2.36 , pK2 = 9.60) c) If you were to...