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.

Lac Repressor

Lysozyme (488)

Deoxyribonucleic Acid (DNA)

Immunoglobulin G (IgG)

Hemoglobin S

TATA-Binding Protein (TBP)

Myoglobin Fold

Ribonuclease S

Lysozyme (512)

Oxyhemoglobin

Aspartate Transcarbamoylase (ATCase)

Induced Lac Repressor

Myoglobin

Hemoglobin

DPG-Hemoglobin Complex

Trypsin

DNA

Intermolecular Contacts in Hemoglobin S

Crambin

Hemoglobin (1000)

B-DNA

Carboxypeptidase A

Cytochrome c

Deoxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

A-DNA

Z-DNA

Cytochrome c (unbound)

Myohemerythrin

Tomato Bushy Stunt Virus (TBSV)

Collagen

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

Coronavirus

HIV-Infected Cell

HIV Vaccine

SARS-CoV-2 mRNA Vaccine

Caulobacter Polar Microdomain

Blood

Mycoplasma mycoides

Model of a Mycoplasma Cell

Casein Micelle and Fat Globule in Milk

CytoSkeleton

Last Universal Common Ancestor

Bacteriophage T4 Infection

Poliovirus Neutralization

SARS-CoV-2 Fusion

Measles Virus Proteins

Lipid Droplets

Biosites: Muscle

Influenza Virus

Excitatory and Inhibitory Synapses

SARS-CoV-2 and Neutralizing Antibodies

Autophagy

Collagen and Extracellular Matrix

RecA and DNA

Biosites: Red Blood Cell

Immunological Synapse

Chloroplast

Vascular Endothelial Growth Factor (VegF) Signaling

Cellulose Synthase

Red Blood Cell Cytoskeleton

Respiratory Droplet

Biosites: Blood Plasma

Escherichia coli Bacterium

Escherichia coli

Myoglobin in a Whale Muscle Cell

Biosites: Cytoplasm

Insulin Action

Transfer RNA and Gag Protein

HIV in Blood Plasma

Biosites: Basement Membrane

Ebola Virus

Kinetochore

Insulin Release

JCVI-syn3A Minimal Cell

Biosites: Nucleus

Influenza Vaccine

Zika Virus

Coronavirus Life Cycle

Phage-based COVID-19 Vaccine

Abiogenesis

Myelin