Question

In many protein complexes, amphipathic alpha helices on different protein subunits interact to form a very stable structure called ...

1) Quaternary structure
2) Tertiary structure
3) Secondary structure
4) Primary structure

Answer 1

The stable structure formed by the interaction of amphipathic alpha helices on different protein subunits is called the 1) quaternary structure. Hence, 1) is correct.

Step-by-step explanation:

The stable structure formed by the interaction of amphipathic alpha helices on different protein subunits is called the quaternary structure. In some proteins, multiple subunits come together to create a larger, more functional protein complex.

These subunits can interact through various weak interactions, such as hydrogen bonds and disulfide bonds, to stabilize the overall structure. This quaternary structure is one of the four levels of protein structure, along with primary, secondary, and tertiary structures.