PMC:2724026 / 14633-14913
Annnotations
Formation of the B2 core was probed by six mutations: H2, W112A; H3, I126A, I129A, Y133A; and H4, R140A, S144A. The extent of helix formation was probed by 12 Ala to Gly mutations: H2, A113G, A114G, A117G; H3, A127G, A131G, A132G; and H4, A138G, A139G, A142G, A143G, A146G, A150G.