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3.2 Sheets

3.2.5 Strand connections

There are two basic categories of connections between the individual strands of a beta sheet (Richardson, 1981). When the backbone enters the same end of the sheet that it left it is called a hairpin connection and when the backbone enters the opposite end it is called a crossover connection. Crossover connections can be thought of as a type of helical connection of the strand ends. In globular proteins, right-handed crossovers are the rule, although a few examples of left-handed crossovers are available (e.g., subtilisin and glucose phosphate isomerase).

No Title - 31 MAY 96
written by Kurt D. Berndt

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