Question: which amino acids are beta branched?
Answer: In terms of branching we see branching in the aromatic residues and histidine. These residues all have their branching point at the Cγ, and so does the non-aromatic residue Leucine. The residues Ile, Thr, and Val are β-branched. That means that they have at the Cβ atom in their side chain a branching point.