#Question id: 31164
#Unit 7. System Physiology – Animal
#Question id: 31343
#Unit 13. Methods in Biology
#Question id: 727
#Unit 1. Molecules and their Interaction Relevant to Biology
26-residue peptide composed of alanine and leucine shows a circular dichroism (CD) spectrum characteristic of α-helix at 50°C in 5 mM phosphate buffer at pH 7.4. When the peptide solution is cooled gradually to 25°C, and the CD spectra are recorded at different temperatures, the most likely observation will be that
#Question id: 31069
#Unit 2. Cellular Organization
#Question id: 11441
#Unit 1. Molecules and their Interaction Relevant to Biology
Tyrosine contains a phenolic R-group and has pK1, pk2, pkR values of 2.20, 9.11, and 10.07 At which pH will all the tyrosine be in their fully protonated form?