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- A hemoglobin molecule is made up of four polypeptide chains, two alpha chains of 141 amino acid residues each and two beta chains of 146 amino acid residues each. In the complete molecule, four subunits are closely joined, as in a three-dimensional jigsaw puzzle, to form a tetramer. Hemoglobin is showing level of structure O primary secondary tertiary quarternary O pentamericThe image below depicts 2,3-bisphosphoglycerate depicted in dark gray, and ß subunits are depicted in light gray. (BPG) bound to hemoglobin. The a subunits are BPGNAZO NHZ Ala-Cys-Glu -Tyr - Trp - Lys - Arg - His -Pro-G ly Glu pka 4.15 SH Tyr 10.10 Draw Charges Lys 10.67 Olt A3 12.10 +NH₂ Ntrm 2) Calculate net charge 3) write out I letter code 300 Ctim 3 juli of peptich (above) Ⓒ pH; 1,7,12
- In 2-3 paragraphs (must be typed) explain: Discuss the regulation of cholesterol synthesis.One of the following glycosaminoglycans is anti-coagulant O Heparan sulphate O Hyaluronic acid O Heparin sulphate O Keratan sulphate O Chondroitin sulfate searchGTP or ATP is produced during the conversion of isocitrate into ketoglutarate succinyl CoA into succinate fumarate into malate malate into oxaloacetate
- Understanding the Mechanism of Hemolytic Anemia Genetic defects in glycolytic enzymes can have serious consequences for humans For example, defects in the gene for pyruvate kinase can result in a condition known as hemolytic anemia. Consult a reference to learn about hemolytic anemia, and discuss why such genetic defects lead to this condition.A chain NH3 NH3 B chain Gly Phe 2. The protein pictured below is bovine insulin. Determine the number and the size of the fragments that would be generated upon treatment with the following: İle Val Val Asn Gln Gln 5 Ġln 5 His look for the cleavage points (a) without DTT and (b) with DTT. Cys Leu Cys S-S Cys Without DTT With DTT Ala Ģly Ser Ser Trypsin 10 Val 10 His Cys Leu Chymotrypsin Ser Val Leu Glu BrCN Tyr Ala 15 Gln 15 Leu Leu Тyr Ġlu Leu Ásn Val Тyr Cys 20 Çys 20 Gly Asn Glu Arg Reagent (source) Trypsin (bovine pancrease) Chymotrypsin (bovine pancrease) Staphylococcus V8 protease Pepsin (porcine pancrease) Cyanogen bromide (chemical)(CnBr) Specificity Lys, Arg (C) Phe, Trp, Tyr (C) Glu, Asp (C) Phe, Trp, Tyr (N) Met (C) Gly Phe 25 Phe Тyr Thr Pro Lys 30 ÁlaMost of the ultraviolet absorption of proteins at 280 nm is due to their content of O Tryptophan O Alanine Glutamate O Aspartate
- Consider the positively charged amino acid lysine Lys2+ 21 COOH I H&N-C-H I pH 14 12 10 8 6 4 2 0 CH₂ I CH₂ I CH₂ I CH₂ T NH₂+ 0 Nelson p85 2.18 = 2.18 PK₁ Lys+ COO™ I H₂N-C-H H₂N-C-H ī I -----) 8.95 Lysº 8.95 pK₂ pka carboxyl = 2.19 pkaamino = 9.67 pka sidechain = 4.25 COO™ I CH₂ I CH₂ I CH₂ I CH₂ I NH₂¹ 1.0 2.0 Equivalents of OH added- COO™ I H₂N-C-H I 10.79 1 10.79 pk Isoelectric point Lys CH₂2 I CH₂ I CH₂ I CH₂ T NH₂ 3.0 +H3N NH3+ T CH₂ T CH₂ CH₂ CH₂ -COO™ H Lysine (Lys, K) Physiological pH = 7.4 < pl → Amino acid is positively charged at physiological pH 1. Consider glutamate in its fully protonated form (e.g. in a pH = 1 solution) 1) Draw all the forms of glutamate at various pH 2) Calculate the pl of this amino acid 3) Sketch a titration curve showing pH as a function of added [OH-] and locate the predominant forms of histidine in the curve STEPS: 1. Find the H atoms that can be removed on the molecule 2. Associated a pka value to each removable H. 3. Draw the Aa structure at:…The figure shows interaction of various amino acids (Phe, Arg, and Asn) present in Hb with 2,3-DPG. The side chains of these amino acids and 2,3-DPG interactions are circled in red. HO Но Phe HN Asn H2N NH Arg You identify a mutant version of the globin chain where the Arg in circle 2 is replaced with aspartic acid in a patient. Would the Hb protein in this patient be able to transport oxygen even in the presence of 2,3-DPG? ASPARTIC ACID (asp) No, because the mutant Hb version will bind 2,3 DPG, and not oxygen Yes, because the mutant Hb version will bind 2,3 DPG, and not oxygen Yes, because the mutant Hb version will bind oxygen and not 2,3 DPGUnbranched homopolymer of N-acetyl glucosamine is : 1.Cellulose 2.Chitin 3.Curcumin 4.Concanavalin A