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Figure 2 | BMC Evolutionary Biology

Figure 2

From: On the evolutionary conservation of hydrogen bonds made by buried polar amino acids: the hidden joists, braces and trusses of protein architecture

Figure 2

Architectural frameworks that are similar to the stabilizing structures formed by buried and conserved polar sidechains. Schematic diagrams of: A) a joist that spans two columns and supports the roof above; B) Vertical K-bracing which is used to provide stability to walls; C) Tri-bearing, D) Polynesian and E) double cantilever trusses are used to support structures such as roofs and bridges.

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