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.

Carboxypeptidase A

Myoglobin Fold

Myoglobin

Myohemerythrin

Cytochrome c (unbound)

DNA

Z-DNA

B-DNA

Cytochrome c

Crambin

Hemoglobin (1000)

Ribonuclease S

Aspartate Transcarbamoylase (ATCase)

Oxyhemoglobin

DPG-Hemoglobin Complex

Deoxyhemoglobin

Deoxyribonucleic Acid (DNA)

Transfer Ribonucleic Acid (tRNA)

Hemoglobin

Lysozyme (488)

Intermolecular Contacts in Hemoglobin S

Trypsin

Hemoglobin S

A-DNA

Immunoglobulin G (IgG)

Lysozyme (512)

Induced Lac Repressor

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

Collagen

TATA-Binding Protein (TBP)

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

SARS-CoV-2 mRNA Vaccine

Biosites: Nucleus

Myelin

Chloroplast

Lipid Droplets

Autophagy

Model of a Mycoplasma Cell

Kinetochore

Red Blood Cell Cytoskeleton

Blood

Respiratory Droplet

Biosites: Basement Membrane

Influenza Virus

Ebola Virus

Abiogenesis

Collagen and Extracellular Matrix

Phage-based COVID-19 Vaccine

Zika Virus

Insulin Action

Mycoplasma mycoides

RecA and DNA

Coronavirus Life Cycle

Vascular Endothelial Growth Factor (VegF) Signaling

SARS-CoV-2 Fusion

Biosites: Cytoplasm

Casein Micelle and Fat Globule in Milk

CytoSkeleton

Last Universal Common Ancestor

Biosites: Muscle

Measles Virus Proteins

Biosites: Red Blood Cell

HIV-Infected Cell

Bacteriophage T4 Infection

Escherichia coli

Transfer RNA and Gag Protein

Immunological Synapse

SARS-CoV-2 and Neutralizing Antibodies

Insulin Release

HIV Vaccine

Influenza Vaccine

Biosites: Blood Plasma

HIV in Blood Plasma

Cellulose Synthase

JCVI-syn3A Minimal Cell

Escherichia coli Bacterium

Myoglobin in a Whale Muscle Cell

Poliovirus Neutralization

Coronavirus

Caulobacter Polar Microdomain