Immunoglobin

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Click "x" box to toggle between structures
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  to optimal view   Carbohydrate chain/ Ball&Stick
  Spacefill / wireframe   Variable Regions/ Ball&Stick
  Backbone Hinge Disulfide / Ball&Stick   Polar / wireframe
  Backbone w/Disulfide / Ball&Stick   Non-Polar / wireframe

Color Codes

C

 H

 N

 O

 P

 S

 Cl

 F
Ribbon / Ball&Stick