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.

Deoxyribonucleic Acid (DNA)

Lysozyme (512)

Ribonuclease S

Collagen

Aspartate Transcarbamoylase (ATCase)

Lac Repressor

Oxyhemoglobin

DNA

DPG-Hemoglobin Complex

Immunoglobulin G (IgG)

Cytochrome c

B-DNA

Cytochrome c (unbound)

Hemoglobin S

Myoglobin Fold

Hemoglobin

TATA-Binding Protein (TBP)

Intermolecular Contacts in Hemoglobin S

Tomato Bushy Stunt Virus (TBSV)

Induced Lac Repressor

Z-DNA

Trypsin

Myohemerythrin

Lysozyme (488)

Transfer Ribonucleic Acid (tRNA)

Carboxypeptidase A

Hemoglobin (1000)

A-DNA

Deoxyhemoglobin

Myoglobin

Crambin

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

Measles Virus Proteins

HIV-Infected Cell

Coronavirus Life Cycle

Myelin

Blood

CytoSkeleton

Biosites: Blood Plasma

Vascular Endothelial Growth Factor (VegF) Signaling

Phage-based COVID-19 Vaccine

RecA and DNA

Escherichia coli

JCVI-syn3A Minimal Cell

Last Universal Common Ancestor

HIV in Blood Plasma

HIV Vaccine

Insulin Action

Insulin Release

Autophagy

Biosites: Muscle

Cellulose Synthase

Escherichia coli Bacterium

Biosites: Red Blood Cell

SARS-CoV-2 Fusion

SARS-CoV-2 and Neutralizing Antibodies

Casein Micelle and Fat Globule in Milk

Excitatory and Inhibitory Synapses

Chloroplast

Caulobacter Polar Microdomain

Abiogenesis

Collagen and Extracellular Matrix

Myoglobin in a Whale Muscle Cell

Zika Virus

SARS-CoV-2 mRNA Vaccine

Ebola Virus

Influenza Virus

Red Blood Cell Cytoskeleton

Immunological Synapse

Mycoplasma mycoides

Influenza Vaccine

Biosites: Cytoplasm

Model of a Mycoplasma Cell

Respiratory Droplet

Coronavirus

Bacteriophage T4 Infection

Transfer RNA and Gag Protein

Biosites: Basement Membrane

Lipid Droplets

Kinetochore

Poliovirus Neutralization

Biosites: Nucleus