Fischer projection
Flat sugar sketch
A Fischer projection is a two-dimensional representation of a three-dimensional organic molecule, especially sugars and amino acids.
Horizontal lines represent bonds projecting toward the viewer; vertical lines represent bonds projecting away.
The format allows chemists to depict stereochemistry—the spatial arrangement of atoms—on a flat page: Draw the Fischer projection of D-glucose.
Primary blood sugar molecule
- ketoseKetone-bearing simple sugar
- monosaccharideSimplest carbohydrate form
- hexoseSix-carbon monosaccharide
- pentoseFive-carbon monosaccharide
glyceraldehyde · ribose · galactose · reducing sugar · ring closure
Mirror-image non-superimposability
- stereoisomerMolecule differing only spatially
- enantiomerMirror-image molecular variant
- racemic mixtureEqual parts both enantiomers
- meso compoundAchiral molecule with stereocenters
tetrahedral · sp3 hybridization · mirror image · superimposable · configuration · conformation
Having only two axes
- carbon chainBonded atoms in organic molecules
- line drawingImage using strokes only
- visualizationForming mental or graphical images
- orientationPosition relative to surroundings
Left-rotating protein components
- side chainGroup branching from backbone
- peptide bondAmino acid connection
- isoleucineEssential branched-chain amino acid
- threonineEssential amino acid
cysteine · serine · alanine · valine · leucine · phenylalanine · glycine · proline
D-glucose
Primary blood sugar molecule
- ketoseKetone-bearing simple sugar
- monosaccharideSimplest carbohydrate form
- hexoseSix-carbon monosaccharide
pentose · glyceraldehyde · ribose · galactose · reducing sugar · ring closure
chirality
Mirror-image non-superimposability
- stereoisomerMolecule differing only spatially
- enantiomerMirror-image molecular variant
- racemic mixtureEqual parts both enantiomers
meso compound · tetrahedral · sp3 hybridization · mirror image · superimposable · configuration · conformation
two-dimensional
Having only two axes
- carbon chainBonded atoms in organic molecules
- line drawingImage using strokes only
- visualizationForming mental or graphical images
orientation · eclipsed · staggered · rotation
L-amino acids
Left-rotating protein components
- side chainGroup branching from backbone
- peptide bondAmino acid connection
- isoleucineEssential branched-chain amino acid
threonine · cysteine · serine · alanine · valine · leucine · phenylalanine · glycine · proline · backbone
- molecular diagramsskeletal structure, molecular model, space-filling, wireframe, 3D model
- Chemistry Notationchemical symbol, chemical formula, molecular formula, chemical equation, subscript
Fischer projectionball-and-stick model
3D molecular structure representation
Fischer projectionball-and-stick model
3D molecular structure representation