Molecule of the Month
November 2026

Artificial Metalloenzymes

Engineering enzymes to catalyze reactions never seen in nature

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SciArt Galleries
Irving Geis (1908-1997) was a gifted artist who helped illuminate the field of structural biology with his iconic images. The Geis Digital Archive features many of his illustrations in the context of their molecular structures.

Images used with permission from the Howard Hughes Medical Institute (www.hhmi.org). All rights reserved.

DPG-Hemoglobin Complex

Immunoglobulin G (IgG)

Lysozyme (488)

Cytochrome c (unbound)

Tomato Bushy Stunt Virus (TBSV)

Carboxypeptidase A

Trypsin

Aspartate Transcarbamoylase (ATCase)

Hemoglobin (1000)

Transfer Ribonucleic Acid (tRNA)

Induced Lac Repressor

Hemoglobin

Deoxyribonucleic Acid (DNA)

DNA

B-DNA

Cytochrome c

Myoglobin Fold

Myohemerythrin

TATA-Binding Protein (TBP)

A-DNA

Lysozyme (512)

Lac Repressor

Ribonuclease S

Hemoglobin S

Deoxyhemoglobin

Collagen

Oxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Myoglobin

Crambin

Z-DNA

The Molecular Landscapes by David S. Goodsell integrate information from structural biology, microscopy and biophysics to simulate detailed views of the molecular structure of living cells.

Illustrations are free for use under a CC-BY-4.0 license

Abiogenesis

Insulin Action

Measles Virus Proteins

Ebola Virus

Bacteriophage T4 Infection

Transfer RNA and Gag Protein

Myelin

Phage-based COVID-19 Vaccine

Mycoplasma mycoides

Chloroplast

CytoSkeleton

Excitatory and Inhibitory Synapses

Last Universal Common Ancestor

Biosites: Nucleus

HIV Vaccine

Lipid Droplets

Respiratory Droplet

Biosites: Muscle

Escherichia coli

Influenza Virus

Immunological Synapse

Influenza Vaccine

Model of a Mycoplasma Cell

Coronavirus Life Cycle

Escherichia coli Bacterium

Biosites: Basement Membrane

Biosites: Red Blood Cell

HIV-Infected Cell

Zika Virus

Kinetochore

Biosites: Blood Plasma

Casein Micelle and Fat Globule in Milk

Poliovirus Neutralization

Collagen and Extracellular Matrix

HIV in Blood Plasma

Coronavirus

Red Blood Cell Cytoskeleton

JCVI-syn3A Minimal Cell

Blood

SARS-CoV-2 mRNA Vaccine

Insulin Release

Biosites: Cytoplasm

SARS-CoV-2 and Neutralizing Antibodies

RecA and DNA

Caulobacter Polar Microdomain

Vascular Endothelial Growth Factor (VegF) Signaling

SARS-CoV-2 Fusion

Autophagy

Myoglobin in a Whale Muscle Cell

Cellulose Synthase