Question

what is alpha chain?

Answer 1

it's a protein

Answer 2

The term 'alpha chain is normally used to indicate one of the subunits of a multi-subunit protein. The term 'chain' is a general term giving to any peptide sequence. It can often refer more specifically to mean

Answer 3

share your views dint copy it from encyclopedia @cp9454

Answer 4

thanks for advice

Answer 5

It is very spot on though as explained by the Wikipedia.
The reason we use Greek letters is because it has always been a popular nomenclature in biology. You could just as well say: subunit 1 and 2 instead of alpha and beta chain.

Answer 6

But the biological nomenclature is the one that has won in protein science. But trust me when I say it can still be hard for biologists to understand chemists as the "language" (nomenclature) can be very different.