Ankh. Christian Symbolism The definition and the meaning of the Christian Symbol or Icon in early religious art forms. A Catholic sign or icon, such as the Ankh, is an object, character, figure, or color used to represent abstract ideas or concepts-a picture that represents an idea.
The role of these chloroplast-unique ribosomal proteins in regulating translation of chloroplast mRNAs, including light-regulated translation, is suggested by the location of these structures on the ribosome. Biochemical data confirm a predicted function in chloroplast translation for some of the unique proteins.
The innermost matrix of chloroplasts, called the stroma, contains metabolic enzymes and multiple copies of the chloroplast genome. Chloroplasts also have a third internal membrane called the thylakoid membrane, which is extensively folded and appears as stacks of flattened disks in electron micrographs.