Statistics of YxeF(19–144) NMR Structure.

aRelative to pairs with non-degenerate chemical shifts.bResidues 37–40, 53–58, 62–69, 73–76, 80–86, 92–98, 105–110, 116–120, and 123–128.cResidues 33–40, 45–48, 51–87, 93–96, 99–101, 104–111, 115–131.dBackbone and side-chain heavy atoms of residues 37–39, 54–59, 63–64, 66, 68, 75, 77, 81–82, 84–86, 93–96, 98, 105–108, 115–118. Best-defined side chains are those exhibiting a displacement of less than 1 Å for their side chain heavy atoms after superposition of the β-strands for minimal r.m.s.d.a. 以具有非简并化学位移的共振峰对为参照。 b. 残基37–40、53–58、62–69、73–76、80–86、92–98、105–110、116–120及123–128。 c. 残基33–40、45–48、51–87、93–96、99–101、104–111、115–131。 d. 残基37–39、54–59、63–64、66、68、75、77、81–82、84–86、93–96、98、105–108、115–118的主链与侧链重原子。其中定义最为清晰的侧链，指在对β折叠片区段进行叠加以实现最小均方根偏差（r.m.s.d.）后，其侧链重原子位移小于1 Å的侧链。