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- H. N-C-C Choose A if the statement is CORRECT B if the statement is WRONG H он CH, This amino acid is/has: CH2 6. polar CH2 | CH2 | NH, _7. charged 8. basic side chain 9. aromatic side chain 10. KRank these amino acids from most to least hydrophobic. H #3 13N-C-H CH₂OH 1 Q .000 OB) 3>2 > 1 E D A) 1>3>2 C) 3 >1 > 2 $ 4 R F % 5 coo™ H₂N-C-H T + __8_5 A CH 2 CH₂ CH₂ 3 2 6 CH MacBook Pro Y & 7 G | H U * 00 8 J 1 + _000 H₂N-C-H CH ₂ 1 CH₂ _000 9 3 K O 0 L dNH2 C=NH2 NH3 ČH2 CH2 ČH2 CH2 H3N-C-Co0 NH HN- NH CH2 CH2 ČH2 CH2 HN-C-COO coos HN-C-COo H Choose A if the statement is CORRECT B if the statement is WRONG 1. The first amino acid is basic. 2. The second amino acid is acidic. 3. The third amino acid is positively charged. The second amino acid is zero charge, a zwitterion. These amino acids are H, L, and R. 4. 4 5.
- +H₂N-CH-COO™ T CH₂ I CH₂ 1 CH₂ I +H₂N-CH₂ A. O amino acid C amino acid D O amino acid E amino acid B +H₂N-CH-COO™ I CH₂ I CH₂ 1 O amino acid A C=0 B. If the pH decreases enough, this amino acid will become protonated and could contribute to the denaturation of the protein. +H₂N-CH-COO™ 1 CH₂ I OH C. +H₂N-CH-COO™ CH H₂C CH3 D.1.Ala-Phe-Lys-Val-Val-Glu From the above polypeptide, what amino acid/s go/goes inside the cell after the following treatment: Chemotrypsin, thermolysin, then finally pepsin. What protein is left undigested? Write the primary structure of the undigested protein? 2.K-V-F-W-P-L-A-Y a.Chemotrypsin treatment b.Trypsin treatment c.Pepsin treatment d.Thermolysin treatment 3.Total acid hydrolysis of a pentapeptide complemented by total alkalinehydrolysis yields an equimolar mixture of 5 amino acids listed alphabetically, ala-cys,lys,phe,ser. N-terminal analysis with phenylisothiocyanate (PITC) generate PTH-ser. Trypsin digestion produces a tripeptide where N-terminal residue is cys and a dipeptide with ser as its N- terminal.Chemotrypsin digestion of the above tripeptide yields ala plus another dipeptide. A.What is the amino acid sequence of the tripeptide B.What is the amino acid sequence of the dipeptide derived from trypsin digestion? C.What is the primary structure of the original…a. A tetrapeptide is abbreviated as PSQE. Write the name of the amino acid at the N-terminal end. b. A tetrapeptide is abbreviated as FRWL. Write the name of the amino acid at the C-terminal end.
- 6) Circle one amino acid in this peptide (hint: draw lines between not through atoms). Kahalalide F NH HN HO NH HN HNSecond letter A UUU UCU) UC UCA UCG UAU UUC Phe UUA Tyr UGU UGCJ Ser UAA Stop UGA Stop A UAG Stop UGG Trp UUG Leu CAUHIS CUU CUC CUA CUG CCU* C ССА CCG CGU His САС Leu CGC Arg CGA Pro CAA Gin CGGJ Gln Which amino acid is carried by the TRNA with the anticodon 5'-UCA-3? ACU ACC ACA AAU AAC. AGU AGC AGA AUU Ser Asn AUC Ile A AUA Thr AAA Lys AAG Lys AGG Arg AUG Met ACG GAU GGU] GUU GUC GUA GUGJ GCU GCC GCA GCG GAC Asp Ala GAA GGC Gly GGA Val GAG Glu GGGJ Isoleucine. None-this is a stop codon. Aspartic acid. Histidine. IV. Leucine O V. Third letter UCAG UCAG UCAG First letterWhich of these amino acids is a polar, uncharged amino acid? (Select all that apply, if necessary.) A. B. D. E. CHLO H₂N-CH-C CH₂ CH₂ CH₂ NH C=NH2 NH₂ amino acid A amino acid C amino acid D amino acid B amino acid E H₂N-CH-C CH₂ _i_g C. H₂N-CH-C- CH2₂ I CH₂ =0 NH₂ H₂N-CH- CH₂ CH-CH3 CH3 H₂ND H₂N-CH- | CH₂ Ï OH
- Consider the following two peptides: I. N-Pro-Pro - Glu - Glu - Tyr - His - Cys - Ala - Glu - Gln - Lys - Leu - Ser - Ser - Phe-Leu- Thr - C II. N-Pro-Pro - Lys - Arg - Gly - Tyr - His - Gly - Glu - Asp - Glu - Asp - Glu - Ser - Gly-Phe- Tyr-C Give three reasons why_peptide I is more likely to form an alpha helix in aqueous solution at pH 7.0. Your reasons may include why_peptide Il is less likely to form an alpha helixWhich of these amino acids is a hydrophobic amino acid? (Select all that apply, if necessary.) A. B. C. D. E. iº H₂N-CH-C CH₂ T CH₂ CH₂ NH C=NH2 NH₂ amino acid E amino acid D amino acid B amino acid C amino acid A 200 H₂N-CH-C CH₂ C=O I OO H₂N-CH-C- CH₂ CH₂ T C=O T NH₂ 0 H₂N-CH- CH₂ CH-CH3 CH3 H₂N-CH-C CH₂ I OH -0Identify the amino acid shown below. (Note: single letter code is provided as answer) H H₂N-C-COOH CH₂ CH₂ CH₂ Эс Ow COM OF