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The human hemoglobin is a tetrameric protein of about 64.5 KDa, consisting of two α-
chains and two β-chains tightly bound.
a) Calculate the number of amino acids present in the α-chains
b) What is the length of each β-chain?
c) What is the sum of the length of the two α-chains?
d) Find the length of the tetrameric protein hemoglobin assuming its all an alpha
helical structure.
Study the polypeptide structure sequence of a β-strand shown below
Lys-Gly-Asp-Trp-Ser-Glu
a) Draw the chemical structure of the polypeptide. Indicate on the structure the
backbone and peptide bonds
b) Calculate the weight of the protein in KDa
c) Calculate the length of the protein.
Draw the structure of the tripeptide, which is composed of Phe+Lys+Cys and answer additional questions .
1.1. specify the value of the isoelectric point
1.2 select the indicator and determine the pH of the aqueous solution by indicator's color 1.3 specify the hydrophilic-hydrophobic balance
1.4 draw the structures of the tripeptide that correspond to the pH values 0, pl, 7, 14. Specify the charge of the tripeptide in each pH
2. Construct the Fişcher's formula for the D-mannose [2(L),3(L),4(D),5(D),6- pentahydroxyhexan-1-al] and draw all the tautomers: oxo, and pyranoses, furanoses. 3.Give the formula of the nucleic base cytosine, nucleoside cytidine, nucleotide cytidine-3-phosphate
Draw the structure of the tripeptide, which is composed of Phe+Lys+Cys and answer additional questions .
1.1. specify the value of the isoelectric point
1.2 select the indicator and determine the pH of the aqueous solution by indicator's color 1.3 specify the hydrophilic-hydrophobic balance
1.4 draw the structures of the tripeptide that correspond to the pH values 0, pl, 7, 14. Specify the charge of the tripeptide in each pH
2. Construct the Fişcher's formula for the D-mannose [2(L),3(L),4(D),5(D),6- pentahydroxyhexan-1-al] and draw all the tautomers: oxo, and pyranoses, furanoses. 3.Give the formula of the nucleic base cytosine, nucleoside cytidine, nucleotide cytidine-3-phosphate
This is called when the electron passes down through an electron transport
What are three biochemical mechanism of antioxidants used in combating oxidative stress
Who invented stroma-free hemoglobin? When was it invented?
What is the overall chemical changes that occur during one complete turn of the krebs cycle?
What is the net ATP count if 1 mol of glucose is completely oxidized? Show computation and all the reducing equivalents.
If pH>pl what’s the charge of
amino acid
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