Sandbox Reserved 719

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<scene name='Sandbox_Reserved_719/Tetrahedral_coordination_spher/1'>tetrahedral coordination sphere</scene> <br />

<scene name='Sandbox_Reserved_719/Disulfide_bond/1'>disulfide bound</scene> Cys-133 and Cys-187 links strands β1 and β3 <br />

<scene name='Sandbox_Reserved_719/Beta1/1'>strand beta1</scene>