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.

Lysozyme (512)

Aspartate Transcarbamoylase (ATCase)

Trypsin

Carboxypeptidase A

Myohemerythrin

Deoxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

TATA-Binding Protein (TBP)

Hemoglobin (1000)

Collagen

Immunoglobulin G (IgG)

Hemoglobin S

DNA

DPG-Hemoglobin Complex

B-DNA

Tomato Bushy Stunt Virus (TBSV)

Cytochrome c (unbound)

Ribonuclease S

Intermolecular Contacts in Hemoglobin S

Lysozyme (488)

Z-DNA

Hemoglobin

A-DNA

Lac Repressor

Induced Lac Repressor

Deoxyribonucleic Acid (DNA)

Myoglobin

Oxyhemoglobin

Cytochrome c

Myoglobin Fold

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

Autophagy

Ebola Virus

Chloroplast

Bacteriophage T4 Infection

Excitatory and Inhibitory Synapses

Biosites: Basement Membrane

Abiogenesis

Red Blood Cell Cytoskeleton

Biosites: Muscle

RecA and DNA

Immunological Synapse

SARS-CoV-2 Fusion

Biosites: Cytoplasm

Respiratory Droplet

HIV-Infected Cell

Influenza Virus

Insulin Action

HIV Vaccine

Lipid Droplets

Measles Virus Proteins

Vascular Endothelial Growth Factor (VegF) Signaling

Insulin Release

JCVI-syn3A Minimal Cell

Phage-based COVID-19 Vaccine

Transfer RNA and Gag Protein

Mycoplasma mycoides

Biosites: Red Blood Cell

Kinetochore

Blood

SARS-CoV-2 mRNA Vaccine

Collagen and Extracellular Matrix

Myoglobin in a Whale Muscle Cell

Cellulose Synthase

Coronavirus

Poliovirus Neutralization

Biosites: Nucleus

Biosites: Blood Plasma

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli Bacterium

Caulobacter Polar Microdomain

Casein Micelle and Fat Globule in Milk

Influenza Vaccine

CytoSkeleton

Coronavirus Life Cycle

Model of a Mycoplasma Cell

Zika Virus

HIV in Blood Plasma

Escherichia coli

Myelin

Last Universal Common Ancestor