Sandbox 719: Difference between revisions

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==== The tetramer Interface ====
==== The tetramer Interface ====
 
[[Image:Tetramer-interface.jpg]]
The most striking feature of DsRed is that, as shown in Fig. 2, it exists as an extremely close-packed tetramer, quite unlike the primarily monomeric avGFP. The tetramer is a square prism with remarkably flat sides and a small elliptical hole directly through the center. The hole is lined with polar residues and salt bridges and localizes a number of solvent molecules.  
The most striking feature of DsRed is that, as shown in Fig. 2, it exists as an extremely close-packed tetramer, quite unlike the primarily monomeric avGFP. The tetramer is a square prism with remarkably flat sides and a small elliptical hole directly through the center. The hole is lined with polar residues and salt bridges and localizes a number of solvent molecules.  
The accessible surface area of the isolated monomer (21) is 􏰊10,230 Å2, and that of the tetramer is 31,420 Å2, so roughly 25% of the monomer surface is not solvent accessible in the tetramer.  
The accessible surface area of the isolated monomer (21) is 􏰊10,230 Å2, and that of the tetramer is 31,420 Å2, so roughly 25% of the monomer surface is not solvent accessible in the tetramer.