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Why is proline frequently encountered at the places in the myoglobin and hemoglobin molecules where the polypeptide chain turns a corner?A mutation that changes an alanine residue in a protein to an T isoleusine leads to a loss of activity. Activity is regained when a further mutation at the same site changes the Ile to a aly. Why?Justify the following observations:a. Ser can be replaced with the least effect on protein structure and function.b. Replacement of Trp causes the greatest effect on protein structure and function.c. Replacement of such as lys to Arg and Leu to Ile usually have very little effect on protein structure and function.
though , the addition of a trace of uniformly labeled [14C]acetyl-CoA in the presence of an excess of unlabeled malonyl-CoA to a soluble liver fraction yields palmitate labeled with 14C only in C-15 and C-16.
There are several examples of the eukaryotic cells. Algae, Fungi, Plants, and Animals are all composed of eukaryotic cells. Some algae and fungi are unicellular organisms.
A male fruit fly with red eyes and long wings is mated to a female with brown eyes and short wings. The F1 offspring consist of red eyed and long-winged females, red-eyed, shortwinged males.
Discuss and explain the relative contributions of developed and developing nations to the global footprint
how to get an estimate of my total body weight. full calculation and what the method is called. Also, I have read that D2O IS used in some experiments to calculate tbw in kgs. Can you explain this process fully to me?
You are having a 2.5 mg/ml solution of an amino acid ( mol.wt. = 100). You are need to add the 0.5 µmoles into a test tube. Specify the amount you would pipette?
Determine the proportion of the lung cancers attributable to smoking among: smokers and the whole population.
Part of a gene that codes for a small protein has the following base sequence: CTTACACGCGCGATTGACT. What would the RNA code be after transcription?
Assume you have made several dilutions of p nitrophenol and are reading the absorbance of each sample on a spectrophotometer.
In Cross one, pure-breeding colored, starchy kernel plants were crossed to plants pure-breeding for colorless, waxy kernels.
Which term is not associated with phylogenetics, Which of the following is NOT a synapomorphy? Which of the following can lead to homoplasy?
The structure of a mammalian hormone oxtocin, a nine-amino acid polypeptide as follows: cys-tur-ile-glan-asn-cys-pro-leu-gly. At the carboxyl end, the -OH is replaced by an amino group.
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