How does sickle cell anemia mutation impact the structure and function of the protein produced

The beta globin protein is one of the subunits of hemoglobin, a protein necessary for the oxygen-carrying function of red blood cells. People with the sickle cell mutation in both copies of the HBB gene produce proteins that clump together and lead to changes in the shape and behavior of red blood cells.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.