Table 2.

Side-chain interactions in the putative spectrin self-association domain

Position in helix and residuePosition in
106–amino
acid motif		CodonInteraction
distance
(Å)*,†		Position in
helix and
residue		Position in
106 amino
acid motif		CodonInteraction type
Interacting residues between helix B and helix C 
 B7-R 43 2055 3.04 C26-G 101 46 H-bond (±) 
 B22-F 58 2070 4.93 C11-V 86 31 Hydrophobic 
 B18-W 54 2066 3.52 C15-Y 90 35 Hydrophobic 
 B18-W 54 2066 3.50 C18-F 93 38 Hydrophobic 
 B11-F 47 2059 3.15 C22-V 97 42 Hydrophobic 
 B11-F 47 2059 4.57 C23-A 98 43 Hydrophobic 
 B4-L 40 2052 3.41 C29-L 104 49 Hydrophobic 
Interacting residues between helix A and helix C 
 A11-A 11 2018 2.76 C7-R 82 28 H-bond 
 A15-E 15 2022 3.04 C7-R 82 28 H-bond (±) 
 A22-E 22 2029 2.79 C21-R 96 41 H-bond 
 A7-F 7 2014 4.07 C4-I 79 24 Hydrophobic 
 A25-L 25 2032 3.74 C18-F 93 38 Hydrophobic 
 A15-E 15 2022 3.81 C7-R 82 27 Salt bridge 
 A15-E 15 2022 4.94 C14-R 89 34 Salt bridge 
 A22-E 22 2029 4.53 C21-R 96 41 Salt bridge 
Interacting residues between helix A and helix B 
 A3-E 3 2010 4.68 B36-R 72 2079 Salt bridge 
 A7-F 7 2014 5.35 B25-L 61 2068 Hydrophobic (±) 
Position in helix and residuePosition in
106–amino
acid motif		CodonInteraction
distance
(Å)*,†		Position in
helix and
residue		Position in
106 amino
acid motif		CodonInteraction type
Interacting residues between helix B and helix C 
 B7-R 43 2055 3.04 C26-G 101 46 H-bond (±) 
 B22-F 58 2070 4.93 C11-V 86 31 Hydrophobic 
 B18-W 54 2066 3.52 C15-Y 90 35 Hydrophobic 
 B18-W 54 2066 3.50 C18-F 93 38 Hydrophobic 
 B11-F 47 2059 3.15 C22-V 97 42 Hydrophobic 
 B11-F 47 2059 4.57 C23-A 98 43 Hydrophobic 
 B4-L 40 2052 3.41 C29-L 104 49 Hydrophobic 
Interacting residues between helix A and helix C 
 A11-A 11 2018 2.76 C7-R 82 28 H-bond 
 A15-E 15 2022 3.04 C7-R 82 28 H-bond (±) 
 A22-E 22 2029 2.79 C21-R 96 41 H-bond 
 A7-F 7 2014 4.07 C4-I 79 24 Hydrophobic 
 A25-L 25 2032 3.74 C18-F 93 38 Hydrophobic 
 A15-E 15 2022 3.81 C7-R 82 27 Salt bridge 
 A15-E 15 2022 4.94 C14-R 89 34 Salt bridge 
 A22-E 22 2029 4.53 C21-R 96 41 Salt bridge 
Interacting residues between helix A and helix B 
 A3-E 3 2010 4.68 B36-R 72 2079 Salt bridge 
 A7-F 7 2014 5.35 B25-L 61 2068 Hydrophobic (±) 
*

Distances for hydrophobic interactions were calculated from the 2 closest atoms of the interacting pair.

†

Distances for salt bridges were calculated from center-to-center of each salt charge in the pair.

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