Protein structure is the three-dimensional arrangement of atoms in a protein molecule. Proteins are polymers â specifically polypeptides â formed from sequences of amino acids, the monomers of the polymer. A single amino acid monomer may also be called a residue (chemistry) indicating a repeating unit of a polymer.
Developmental disability is a diverse group of chronic conditions that are due to mental or physical impairments. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in language, mobility, learning, self-help, and independent living.
Of the 2685 children identified with a developmental disability in 1991, a total of 122 (4.5%) had at least one with a postnatal cause (Table_1); overall, these children had a total of 186 postnatally acquired developmental disabilities (Table_2).