Read this menu of the types and arrangements of protein secondary structures: a.

Question

Read this menu of the types and arrangements of protein secondary structures:

a. anti-parallel -helix proteins
b. parallel -helix proteins
c. anti-parallel -sheet proteins
d. parallel -sheet proteins
e. small metal-rich proteins

Most globular proteins belong to one of four structural classes. These four types of tertiary structures may be grouped according to the predominant type and arrangement of secondary structures. They are:

all the above (a through e) all the above except for b all the above except for d all the above except for e

Explanation / Answer

Most globular proteins belong to one of four structural classes. These four types of tertiary structures may be grouped according to the predominant type and arrangement of secondary structures.

They are:

anti-parallel -helix proteins

parallel -helix proteins

anti-parallel -sheet proteins
small metal-rich proteins

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