Expression of class II molecules by B cells is down-regulated by IFN-¥.

TLS Online TPP Program

#Id: 8034

#Section 2: General Biology

Nonpolar amino acids have three ionisations zones

1. 1--------pK1 – charge +1

2. pK1---------pK2 charge 0

3. pK2---------14 charge -1

TLS Online TPP Program

#Id: 9295

#Section 2: General Biology

The nitrate reductase dimer- Three binding domains

TLS Online TPP Program

#Id: 8965

#Section 3: Genetics, Cellular and Molecular Biology

Most protein-encoding genes, the synonymous rate of change is considerably higher than the nonsynonymous rate because synonymous mutations are tolerated by natural selection

TLS Online TPP Program

#Id: 7326

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 8056

#Section 2: General Biology

Glu–Cys–Gly peptide in which the γ-carboxylate group of the glutamate side chain forms an isopeptide bond.