Peptit Protein www.tuhoc.edu.vn 2N–R– nhóm NH2 O O —C—OH + H—NH— —C—NH— + H2O –CO–NH– VD1: Ala H2N–CH2–CO–NH–CH–COOH Gly VD2: Peptit Ala– Gly–Ala CH3 –Ala Peptit có n n! H2N–CH–CO–NH–CH2–COOH CH3 A) Ala–Gly C) Gly–Ala B) Ala–Glu D) Gly–Val htttp://tuhoc.edu.vn/blog Peptit Protein www.tuhoc.edu.vn H2N–CH2–CO–NH–CH–CO–NH–CH–COOH CH(CH3)2 A) Val–Gly–Ala C) Gly–Val–Ala CH3 B) Ala–Gly–Val D) Gly–Ala–Val H2N–CH–CO–NH–CH2–CO–NH–CH–CO–NH–CH–COOH CH3 CH3 A) Gly–Val–Val–Ala C) Ala–Gly–Val–Ala CH(CH3)2 B) Ala–Gly–Ala–Val D) Gly–Val–Ala–Ala alin, alanin, glyxin Công H2N–CH–CO–NH–CH2–CO–NH–CH–COOH CH3 CH(CH3)2 không A) Val–Ala–Gly C) Ala–Gly–Val alanin A) B) Val–Gly–Ala D) Ala–Val–Gly B) C) D) B) C) D) 6 A) –CO–NH– màu tím Cu(OH)2/OH– không A) Gly–Ala–Val C) : B) D) Val–Gly htttp://tuhoc.edu.vn/blog Peptit Protein www.tuhoc.edu.vn VD3: – H2N–CH2–CO—NH–CH–COOH + HCl CH3 t o H2N–CH2–COOH + H2N–CH–COOH CH3 HCl (d−) t H3N+–CH2–COOH Cl + H3N+–CH–COOH Cl CH3 –CO–NH– H2O H2O H ,to H ,to VD4: VD5: –Ala– –Val –Gly–Gly Phe–Ala Hãy X + H2O H to Ala + Gly + Phe • X + H2O H Ala–Gly–Gly + Phe–Ala to Các Ala–Gly–Gly Phe–Ala htttp://tuhoc.edu.vn/blog –Ala–Gly–Gly Peptit Protein www.tuhoc.edu.vn thu A) B) C) D) A) B) C) D) A g? A) B) Cu(OH)2 C) D) Amino B A) B) H2N-CH2-CH2-CO-NH-CH2 C) D) có mùi khai C Đun nóng H2N–CH2–CONH–CH(CH3)–CONH–CH2–COOH HCl A) H2N–CH2–COOH, H2N–CH2–CH2–COOH B) H3N+–CH2–COOHCl-, H3N+–CH2–CH2–COOHCl- C) H3N+–CH2–COOHCl-, H3N+–CH(CH3)–COOHCl- D) H2N–CH2–COOH, H2N–CH(CH3)–COOH D –Ala–Gly–Phe không A) Val–Ala C) Gly–Phe E htttp://tuhoc.edu.vn/blog B) Ala–Gly D) Val–Gly –Ala–Phe–Ala không A) Val–Ala C) Phe–Ala B) Ala–Phe D) Ala–Val Peptit Protein www.tuhoc.edu.vn F –Gly–Gly Phe– G –Val Gly– H –Gly, Gly–Ala tripeptit Gly–Gly– I (Gly), mol alanin (Ala), mol valin (Val) mol phenylalanin (Phe) A) Gly-Phe-Gly-Ala-Val C) Gly-Ala-Val-Phe-Gly B) Gly-Ala-Val-Val-Phe D) Val-Phe-Gly-Ala-Gly J –Pro–Pro–Gly–Phe–Ser–Pro–Phe–Arg A) K B) C) D) –Val– A) B) C) D) htttp://tuhoc.edu.vn/blog Peptit Protein www.tuhoc.edu.vn L A) 1,46 B) 1,36 C) 1,64 D) 1,22 M Ala–Ala– A) 81,54 C) 111,74 B) 66,44 D) 90,6 N 10 ì l A) 8,15 gam C) 7,82 gam B) 7,09 gam D) 16,30 gam O –NH2 – H2 A) 120 B) 60 C) 30 D) 45 P A) 51,72 B) 54,30 C) 66,00 D) 44,48 htttp://tuhoc.edu.vn/blog Peptit Protein www.tuhoc.edu.vn Protein –S—S– A.A A A A.A A.A A.A peptit A.A A.A A.A A.A A.A A.A A.A A A A A A A A A A.A A.A A.A A.A A A A.A A A A.A A.A A.A Protein H2O H ,to Polipeptit A.A A.A A.A A.A A.A H2O H ,to 2/OH Q A) B) C) D) R sai? A) B) α–amino axit α–amino axit C) D) S không là: A) B) C) D) htttp://tuhoc.edu.vn/blog Peptit Protein www.tuhoc.edu.vn Câu A C B Câu F G H B I C D J C D K A D L A C M A A N C A D O A B D P A C C Q A D D R D E D S A F Phe – Ala – Gly – Gly G Gly – Ala – Val H Gly – Ala – Gly – Gly – Val htttp://tuhoc.edu.vn/blog