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)

Deoxyhemoglobin

Myohemerythrin

Myoglobin Fold

Trypsin

TATA-Binding Protein (TBP)

Hemoglobin (1000)

Cytochrome c (unbound)

Induced Lac Repressor

Hemoglobin S

Immunoglobulin G (IgG)

Ribonuclease S

B-DNA

A-DNA

Lysozyme (488)

Lysozyme (512)

Lac Repressor

Hemoglobin

Intermolecular Contacts in Hemoglobin S

Myoglobin

Aspartate Transcarbamoylase (ATCase)

Collagen

Cytochrome c

Crambin

Z-DNA

Deoxyribonucleic Acid (DNA)

DNA

Tomato Bushy Stunt Virus (TBSV)

Oxyhemoglobin

Carboxypeptidase A

DPG-Hemoglobin Complex

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

HIV-Infected Cell

Excitatory and Inhibitory Synapses

Coronavirus

Collagen and Extracellular Matrix

Lipid Droplets

Influenza Vaccine

HIV Vaccine

Myoglobin in a Whale Muscle Cell

Cellulose Synthase

Poliovirus Neutralization

Model of a Mycoplasma Cell

Measles Virus Proteins

Biosites: Basement Membrane

Red Blood Cell Cytoskeleton

Vascular Endothelial Growth Factor (VegF) Signaling

HIV in Blood Plasma

Ebola Virus

Transfer RNA and Gag Protein

Bacteriophage T4 Infection

Biosites: Red Blood Cell

Myelin

CytoSkeleton

Coronavirus Life Cycle

Kinetochore

Biosites: Cytoplasm

Biosites: Blood Plasma

Casein Micelle and Fat Globule in Milk

Caulobacter Polar Microdomain

Immunological Synapse

Escherichia coli

Insulin Release

Biosites: Muscle

Biosites: Nucleus

Mycoplasma mycoides

SARS-CoV-2 and Neutralizing Antibodies

Blood

SARS-CoV-2 Fusion

Phage-based COVID-19 Vaccine

SARS-CoV-2 mRNA Vaccine

Escherichia coli Bacterium

JCVI-syn3A Minimal Cell

Chloroplast

Insulin Action

Zika Virus

Influenza Virus

Abiogenesis

Last Universal Common Ancestor

RecA and DNA

Respiratory Droplet

Autophagy