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.

Aspartate Transcarbamoylase (ATCase)

B-DNA

Cytochrome c

Tomato Bushy Stunt Virus (TBSV)

Immunoglobulin G (IgG)

Ribonuclease S

TATA-Binding Protein (TBP)

Hemoglobin S

Deoxyhemoglobin

Lysozyme (488)

Hemoglobin (1000)

Z-DNA

Induced Lac Repressor

Lysozyme (512)

Hemoglobin

Oxyhemoglobin

A-DNA

Collagen

Intermolecular Contacts in Hemoglobin S

Cytochrome c (unbound)

Trypsin

Transfer Ribonucleic Acid (tRNA)

DPG-Hemoglobin Complex

Lac Repressor

Myoglobin Fold

Deoxyribonucleic Acid (DNA)

Carboxypeptidase A

Crambin

Myohemerythrin

Myoglobin

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

Excitatory and Inhibitory Synapses

Bacteriophage T4 Infection

Last Universal Common Ancestor

Blood

Escherichia coli

Kinetochore

Ebola Virus

Influenza Virus

Collagen and Extracellular Matrix

Red Blood Cell Cytoskeleton

Transfer RNA and Gag Protein

Respiratory Droplet

Biosites: Blood Plasma

Abiogenesis

Casein Micelle and Fat Globule in Milk

Vascular Endothelial Growth Factor (VegF) Signaling

Immunological Synapse

Lipid Droplets

Biosites: Red Blood Cell

Escherichia coli Bacterium

Phage-based COVID-19 Vaccine

HIV Vaccine

Autophagy

Caulobacter Polar Microdomain

Insulin Action

Zika Virus

Chloroplast

Myoglobin in a Whale Muscle Cell

JCVI-syn3A Minimal Cell

Influenza Vaccine

Poliovirus Neutralization

Myelin

Coronavirus Life Cycle

HIV-Infected Cell

Biosites: Muscle

Measles Virus Proteins

Insulin Release

SARS-CoV-2 mRNA Vaccine

Biosites: Nucleus

Coronavirus

HIV in Blood Plasma

RecA and DNA

CytoSkeleton

Mycoplasma mycoides

SARS-CoV-2 and Neutralizing Antibodies

SARS-CoV-2 Fusion

Biosites: Cytoplasm

Cellulose Synthase

Biosites: Basement Membrane

Model of a Mycoplasma Cell