Related Experiment Video
Updated: Jul 19, 2026
14:44
Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
Summary
Researchers crystallized and determined the molecular structure of 1,2-dimyristoyl-sn-glycero-3-phosphorylcholine (DMPC), a common lecithin. This provides crucial insights into the three-dimensional structure of lecithins and their role in biological membranes.
Area of Science:
- Biochemistry
- Molecular Biology
- Structural Biology
Background:
- Lecithin, a key phospholipid, forms bilayer structures essential for biological membranes.
- Understanding lecithin's 3D structure is vital for elucidating membrane function.
- Current knowledge of lecithin's detailed molecular structure is limited.
Purpose of the Study:
- To determine the precise three-dimensional molecular structure of a specific lecithin species.
- To provide foundational data for understanding lecithin's role in membrane organization.
Main Methods:
- Crystallization of 1,2-dimyristoyl-sn-glycero-3-phosphorylcholine (DMPC).
- X-ray crystallography to solve the molecular structure.
- Analysis of DMPC in its naturally occurring configuration with water of hydration.
Main Results:
- The molecular structure of DMPC was successfully crystallized and solved.
- The study identified the specific arrangement of DMPC molecules in a crystalline state.
- Two water molecules of hydration were found to be associated with the DMPC crystals.
Conclusions:
- The determined structure of DMPC offers critical insights into lecithin's molecular organization.
- This structural data advances the understanding of phospholipid behavior in membranes.
- The findings contribute to the broader knowledge of biological membrane components.
More Related Videos
Related Concept Videos
02:48Bond Polarity, Dipole Moment, and Percent Ionic Character
Bond Polarity
02:54Lewis Structures of Molecular Compounds and Polyatomic Ions
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
02:27Predicting Molecular Geometry
VSEPR Theory for Determination of Electron Pair Geometries
02:42Ionic Crystal Structures
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
03:05Acid Strength and Molecular Structure
Binary Acids and Bases
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
01:28Structures of Carboxylic Acid Derivatives
Structure of Carboxylic Acid Derivatives
Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
The three sp2 orbitals of the carbonyl carbon form three σ bonds, one each with the carbonyl oxygen, the α carbon, and the heteroatom, whereas the other two sp2 orbitals of the carbonyl oxygen are occupied by the lone pairs. Further, the unhybridized p...
Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
The three sp2 orbitals of the carbonyl carbon form three σ bonds, one each with the carbonyl oxygen, the α carbon, and the heteroatom, whereas the other two sp2 orbitals of the carbonyl oxygen are occupied by the lone pairs. Further, the unhybridized p...