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.

Transfer Ribonucleic Acid (tRNA)

Lac Repressor

Trypsin

Tomato Bushy Stunt Virus (TBSV)

A-DNA

Collagen

Hemoglobin

Myoglobin

Cytochrome c

Oxyhemoglobin

B-DNA

Hemoglobin S

Ribonuclease S

Immunoglobulin G (IgG)

Myohemerythrin

Deoxyribonucleic Acid (DNA)

DPG-Hemoglobin Complex

Intermolecular Contacts in Hemoglobin S

Lysozyme (488)

Aspartate Transcarbamoylase (ATCase)

Cytochrome c (unbound)

Crambin

TATA-Binding Protein (TBP)

Lysozyme (512)

Induced Lac Repressor

Z-DNA

Myoglobin Fold

Deoxyhemoglobin

Hemoglobin (1000)

DNA

Carboxypeptidase A

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

Bacteriophage T4 Infection

Coronavirus

Influenza Vaccine

Excitatory and Inhibitory Synapses

HIV in Blood Plasma

Lipid Droplets

Mycoplasma mycoides

Biosites: Red Blood Cell

Cellulose Synthase

Kinetochore

HIV-Infected Cell

Phage-based COVID-19 Vaccine

Caulobacter Polar Microdomain

CytoSkeleton

Casein Micelle and Fat Globule in Milk

JCVI-syn3A Minimal Cell

Coronavirus Life Cycle

Escherichia coli

Last Universal Common Ancestor

Measles Virus Proteins

Poliovirus Neutralization

Ebola Virus

Escherichia coli Bacterium

Biosites: Cytoplasm

Biosites: Muscle

Abiogenesis

Myelin

Immunological Synapse

SARS-CoV-2 Fusion

Biosites: Basement Membrane

Collagen and Extracellular Matrix

Influenza Virus

Transfer RNA and Gag Protein

Red Blood Cell Cytoskeleton

Zika Virus

Insulin Action

Biosites: Nucleus

SARS-CoV-2 mRNA Vaccine

HIV Vaccine

Myoglobin in a Whale Muscle Cell

Model of a Mycoplasma Cell

Biosites: Blood Plasma

Respiratory Droplet

Autophagy

Vascular Endothelial Growth Factor (VegF) Signaling

SARS-CoV-2 and Neutralizing Antibodies

Insulin Release

Chloroplast

RecA and DNA

Blood