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.

Intermolecular Contacts in Hemoglobin S

Lysozyme (512)

Hemoglobin S

Carboxypeptidase A

B-DNA

Z-DNA

Tomato Bushy Stunt Virus (TBSV)

Cytochrome c (unbound)

Deoxyribonucleic Acid (DNA)

Lysozyme (488)

Induced Lac Repressor

Ribonuclease S

Cytochrome c

Immunoglobulin G (IgG)

Myohemerythrin

Oxyhemoglobin

Myoglobin Fold

Lac Repressor

Aspartate Transcarbamoylase (ATCase)

Crambin

Hemoglobin (1000)

Hemoglobin

Trypsin

TATA-Binding Protein (TBP)

DPG-Hemoglobin Complex

Collagen

Myoglobin

Deoxyhemoglobin

DNA

Transfer Ribonucleic Acid (tRNA)

A-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

Insulin Release

Lipid Droplets

Transfer RNA and Gag Protein

CytoSkeleton

Insulin Action

HIV Vaccine

SARS-CoV-2 Fusion

Zika Virus

Model of a Mycoplasma Cell

Myoglobin in a Whale Muscle Cell

HIV-Infected Cell

Measles Virus Proteins

Collagen and Extracellular Matrix

HIV in Blood Plasma

Escherichia coli Bacterium

Respiratory Droplet

SARS-CoV-2 and Neutralizing Antibodies

Immunological Synapse

Last Universal Common Ancestor

Autophagy

Influenza Vaccine

Cellulose Synthase

Biosites: Muscle

JCVI-syn3A Minimal Cell

Poliovirus Neutralization

Red Blood Cell Cytoskeleton

Excitatory and Inhibitory Synapses

Myelin

Biosites: Red Blood Cell

Abiogenesis

Influenza Virus

Phage-based COVID-19 Vaccine

Escherichia coli

Caulobacter Polar Microdomain

Coronavirus Life Cycle

Biosites: Nucleus

Coronavirus

Biosites: Cytoplasm

Kinetochore

Biosites: Basement Membrane

Chloroplast

SARS-CoV-2 mRNA Vaccine

Blood

Casein Micelle and Fat Globule in Milk

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Blood Plasma

RecA and DNA

Bacteriophage T4 Infection

Mycoplasma mycoides

Ebola Virus