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.

Hemoglobin S

Cytochrome c

Aspartate Transcarbamoylase (ATCase)

Carboxypeptidase A

Intermolecular Contacts in Hemoglobin S

A-DNA

Immunoglobulin G (IgG)

Deoxyribonucleic Acid (DNA)

B-DNA

Lac Repressor

Trypsin

Hemoglobin (1000)

Deoxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

Cytochrome c (unbound)

Z-DNA

Tomato Bushy Stunt Virus (TBSV)

TATA-Binding Protein (TBP)

Ribonuclease S

DPG-Hemoglobin Complex

Myohemerythrin

Lysozyme (488)

Induced Lac Repressor

Myoglobin Fold

DNA

Crambin

Myoglobin

Lysozyme (512)

Collagen

Oxyhemoglobin

Hemoglobin

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

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli

Last Universal Common Ancestor

Excitatory and Inhibitory Synapses

Biosites: Cytoplasm

Influenza Virus

Insulin Action

Model of a Mycoplasma Cell

Ebola Virus

Mycoplasma mycoides

Transfer RNA and Gag Protein

Respiratory Droplet

Chloroplast

Abiogenesis

SARS-CoV-2 Fusion

HIV Vaccine

HIV-Infected Cell

Insulin Release

Immunological Synapse

Collagen and Extracellular Matrix

Cellulose Synthase

Poliovirus Neutralization

Autophagy

Phage-based COVID-19 Vaccine

Bacteriophage T4 Infection

Vascular Endothelial Growth Factor (VegF) Signaling

JCVI-syn3A Minimal Cell

Biosites: Nucleus

Zika Virus

Coronavirus

Influenza Vaccine

Caulobacter Polar Microdomain

Blood

Biosites: Basement Membrane

Biosites: Muscle

Coronavirus Life Cycle

Kinetochore

HIV in Blood Plasma

SARS-CoV-2 mRNA Vaccine

Lipid Droplets

Myoglobin in a Whale Muscle Cell

Escherichia coli Bacterium

CytoSkeleton

Myelin

RecA and DNA

Biosites: Blood Plasma

Measles Virus Proteins

Biosites: Red Blood Cell

Red Blood Cell Cytoskeleton

Casein Micelle and Fat Globule in Milk