Proteinoplast

Proteinoplasts (sometimes called proteoplasts, aleuroplasts, and aleuronaplasts) are specialized organelles found only in plant cells.

Plastids are specialized double-membrane organelles found in plant cells.

[1][2] Plastids perform a variety of functions such as metabolism of energy, and biological reactions.

[2][3] There are multiple types of plastids recognized including Leucoplasts, Chromoplasts, and Chloroplasts.

[2] Plastids are broken up into different categories based on characteristics such as size, function and physical traits.