L amino acid.
L-cysteine
L-cysteine - ball and stick model
L-cysteine - space filling model
Cystine, showing disulfide bond
Glutathione.
L-glutamic acid
L-glutamic acid - stick model
L-glutamine
L-glutamine - stick model
Glycine
Glycine - ball and stick model
Glycine - space filling model
Amino acid glycinate.
L-histidine
L-histidine - stick model
Resonance in histidine
Decarboxylation of histidine by histi...
The histidine bound heme group of suc...
L-isoleucine
L-isoleucine - stick model
L-leucine
L-leucine - stick model
L-lysine
L-lysine - stick model
L-lysine - zwitterion
L-methionine
L-methionine - stick model
Methionine biosynthesis
L-phenylalanine
L-phenylalanine - stick model
Biosynthesis of phenylalanine. Prephe...
L-phenylalanine can also be converted...
L-proline
L-proline - stick model
L-serine
L-serine - stick model
L-threonine
L-threonine - stick model
Threonine biosynthesis
L-tryptophan
L-tryptophan - stick model
Tryptophan biosynthesis
Metabolism of L-tryptophan into serot...
L-tyrosine
L-tyrosine - stick model
Phe to Tyr conversion
Absorbance and fluorescence of tyrosi...
Biosynthesis of tyrosine. Prephenate ...
L-valine
L-valine - stick model
Two amino acids
Bond angles for ? and ?
Dehydration synthesis (condensation) ...
Donating an H-bond to the amide hydro...
lectronegative substituent near the a...
Cis-trans isomerization of an X-Pro p...
The condensation of two amino acids t...
Protein folding
The purpose of the added reagents in ...
3-dimensional structure of hemoglobin...
A Ramachandran plot generated from th...
The structure hierarchy of Proteins
The left panel shows the hydrogen bon...
Alpha helix - Ball and stick model
Alpha helix - Backbone
Alpha helix - Ribbon
Side view of an ?-helix of alanine re...
Top view of the same helix shown abov...
An example of the three-helix bundle ...
An example of the globin fold, the ox...
Example of homeodomain fold - The Ant...
A trimer of the peridinin-chlorophyll...
The hydrogen bond network in a 2-stra...
Diagram of ?-pleated sheet with H-bon...
Illustration of the hydrogen bonding ...
Representation of the beta hairpin of...
Beta-meander motif - Portion of outer...
Representation of the Psi-loop motif.
Example of an immunoglobulin domain, ...
Ribbon diagram of the C-terminal WD40...
An example of a leucine-rich repeat p...
Flavodoxin fold - Ribbon diagram of C...
One molecule of human thioredoxin (PD...
A deep trefoil knot in a Thermus ther...
Ferredoxin fold - Ribbon diagram of a...
SH2 domain - Ribbon diagram of the SH...
A canonical beta-barrel protein, a su...
The human retinol-binding protein (RB...
Top view of a triosephosphateisomeras...
Side view of the same TIM barrel (PDB...
Ribbon diagram of the enzyme TIM, sur...
Membrane transport proteins in facili...
Membrane transport proteins in active...
Ribbon-diagram showing carbonic anhyd...
Diagram illustrating the induced fit...
Space-filling model of the coenzyme NADH
Diagram of a catalytic reaction, show...
Mechanism for a single substrate enzy...
Saturation curve for an enzyme reacti...
Competitive inhibitors bind reversibl...
Types of inhibition. This classificat...
The coenzyme folic acid (left) and th...
Phenylalanine hydroxylase. Created fr...
Lysozyme
Stabilization of the transition state...
The different mechanisms of substrate...
Substrate, bound substrate, and trans...
Similar reactions will occur far fast...
Serine protease catalytic mechanism. ...
Carboxypeptidase catalytic mechanism....
Bacillus amyloliquefaciens proteins i...
A phosphorylated serine residue
HIV protease in a complex with the pr...
Bacillus stearothermophilus phosphofr...
Competitive inhibition: substrate (S)...
Kinetic scheme for reversible enzyme ...
Lineweaver–Burk diagrams of different...
Peptide-based protease inhibitor rito...
Nonpeptidic protease inhibitor tipran...
Reaction of the irreversible inhibito...
Kinetic scheme for irreversible inhib...
Chemical mechanism for irreversible i...
Trypanothione reductase with the lowe...
Robots used for the high-throughput s...
The structure of a complex between pe...
Dihydrofolate reductase from E. coli ...
The rate of reaction will increase as...
Michaelis-Menten kinetics
Progress curve for an enzyme reaction...
Single-substrate mechanism for an enz...
Lineweaver–Burk or double-reciprocal ...
Random-order ternary-complex mechanis...
Ping–pong mechanism for an enzyme rea...
Pre-steady state progress curve, show...
Coupled assay for hexokinase using gl...
Tropocollagen triple helix.
Collagen
Julian Voss-Andreae's sculpture Unrav...
Microscopy of keratin filaments insid...
Schematic of 4 different protein sign...
The bottom of this diagram shows the ...
N-linked protein glycosylation (N-gly...
The eight sugars contained in glycopr...
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