Search results
Results from the WOW.Com Content Network
For a diatomic molecule, an MO diagram effectively shows the energetics of the bond between the two atoms, whose AO unbonded energies are shown on the sides. For simple polyatomic molecules with a "central atom" such as methane (CH 4) or carbon dioxide (CO 2), a MO diagram may show one of the identical bonds to the central atom. For other ...
C is the sodium channel . Sodium channels are integral membrane proteins that form ion channels, conducting sodium ions (Na +) through a cell's membrane. [1] [2] They belong to the superfamily of cation channels.
The qualitative approach of MO analysis uses a molecular orbital diagram to visualize bonding interactions in a molecule. In this type of diagram, the molecular orbitals are represented by horizontal lines; the higher a line the higher the energy of the orbital, and degenerate orbitals are placed on the same level with a space between them.
Diagram of a voltage-sensitive sodium channel α-subunit. G – glycosylation, P – phosphorylation, S – ion selectivity, I – inactivation. Positive (+) charges in S4 are important for transmembrane voltage sensing. [1] Sodium channels consist of large alpha subunits that associate with accessory proteins, such as beta subunits. An alpha ...
Walsh diagrams in conjunction with molecular orbital theory can also be used as a tool to predict reactivity. By generating a Walsh Diagram and then determining the HOMO/LUMO of that molecule, it can be determined how the molecule is likely to react. In the following example, the Lewis acidity of AH 3 molecules such as BH 3 and CH 3 + is predicted.
The first ribbon diagrams, hand-drawn by Jane S. Richardson in 1980 (influenced by earlier individual illustrations), [3] were the first schematics of 3D protein structure to be produced systematically. [3] [4] They were created to illustrate a classification of protein structures for an article in Advances in Protein Chemistry [5] (now ...
[1] [2] There is debate as to whether or not this channel is expressed in the cell surface membrane. [3] [4] [5] This major protein of the outer mitochondrial membrane of eukaryotes forms a voltage-dependent anion-selective channel (VDAC) that behaves as a general diffusion pore for small hydrophilic molecules.
Sodium/substrate symport (or co-transport) is a widespread mechanism of solute transport across cytoplasmic membranes of pro- and eukaryotic cells. The energy stored in an inwardly directed electrochemical sodium gradient, the sodium-motive force (SMF) is used to drive solute accumulation against a concentration gradient.