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.

Immunoglobulin G (IgG)

Transfer Ribonucleic Acid (tRNA)

DPG-Hemoglobin Complex

Tomato Bushy Stunt Virus (TBSV)

Carboxypeptidase A

Hemoglobin S

Cytochrome c

Myohemerythrin

Hemoglobin

Collagen

Crambin

A-DNA

Myoglobin Fold

Intermolecular Contacts in Hemoglobin S

Hemoglobin (1000)

Lysozyme (488)

DNA

TATA-Binding Protein (TBP)

B-DNA

Aspartate Transcarbamoylase (ATCase)

Cytochrome c (unbound)

Z-DNA

Oxyhemoglobin

Trypsin

Ribonuclease S

Myoglobin

Deoxyribonucleic Acid (DNA)

Deoxyhemoglobin

Induced Lac Repressor

Lac Repressor

Lysozyme (512)

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

Biosites: Nucleus

Lipid Droplets

Chloroplast

Respiratory Droplet

Biosites: Blood Plasma

Poliovirus Neutralization

Coronavirus Life Cycle

Myoglobin in a Whale Muscle Cell

Measles Virus Proteins

Collagen and Extracellular Matrix

Last Universal Common Ancestor

Immunological Synapse

Bacteriophage T4 Infection

Insulin Action

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Cytoplasm

Influenza Virus

Caulobacter Polar Microdomain

Cellulose Synthase

SARS-CoV-2 mRNA Vaccine

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli Bacterium

Ebola Virus

Phage-based COVID-19 Vaccine

Excitatory and Inhibitory Synapses

Kinetochore

Biosites: Muscle

HIV Vaccine

Biosites: Basement Membrane

Blood

Biosites: Red Blood Cell

CytoSkeleton

HIV-Infected Cell

JCVI-syn3A Minimal Cell

Casein Micelle and Fat Globule in Milk

Zika Virus

RecA and DNA

HIV in Blood Plasma

Escherichia coli

Abiogenesis

Coronavirus

Model of a Mycoplasma Cell

Mycoplasma mycoides

Transfer RNA and Gag Protein

Red Blood Cell Cytoskeleton

Influenza Vaccine

SARS-CoV-2 Fusion

Insulin Release

Autophagy

Myelin