Federal Home Loan Mortgage Corporation: FRM: fixed-rate mortgage: GAAP: generally accepted accounting principles: GSE: government-sponsored enterprise: HCLTV: home equity combined loan-to-value: HELOC: home equity line of credit: HFA: Housing Finance Agency: HOA: homeownersâ association: HOEPA: Home Ownership and Equity Protection Act of 1994
Hydrogen bonds, as well as the other types of noncovalent interactions, are very important in terms of the binding of a ligand to a protein. In section 1.3, we saw a 'space-filling' picture of an enzyme with its substrate bound in its active site.
Covalent bonding. There are different types of bonding, including: Ionic bonding between metals and non-metals; Covalent bonding between non-metals; A covalent bond is a shared pair of electrons, shared between two non-metal atoms. Simple molecules. Simple molecules consist of a small number of atoms joined by covalent bonds. For example, water and carbon dioxide exist as simple molecules. Their molecules are often shown using the models in the table below.