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.

Myohemerythrin

Oxyhemoglobin

Myoglobin

Deoxyribonucleic Acid (DNA)

Crambin

Deoxyhemoglobin

Trypsin

A-DNA

B-DNA

Lysozyme (512)

Hemoglobin

Carboxypeptidase A

DPG-Hemoglobin Complex

TATA-Binding Protein (TBP)

Transfer Ribonucleic Acid (tRNA)

Ribonuclease S

Z-DNA

Lysozyme (488)

DNA

Intermolecular Contacts in Hemoglobin S

Collagen

Lac Repressor

Aspartate Transcarbamoylase (ATCase)

Induced Lac Repressor

Immunoglobulin G (IgG)

Cytochrome c

Hemoglobin S

Myoglobin Fold

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin (1000)

Cytochrome c (unbound)

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

Lipid Droplets

Measles Virus Proteins

Bacteriophage T4 Infection

Caulobacter Polar Microdomain

HIV-Infected Cell

Transfer RNA and Gag Protein

Chloroplast

Cellulose Synthase

Casein Micelle and Fat Globule in Milk

Biosites: Red Blood Cell

Mycoplasma mycoides

Myelin

Excitatory and Inhibitory Synapses

SARS-CoV-2 mRNA Vaccine

Biosites: Muscle

Ebola Virus

Insulin Action

Last Universal Common Ancestor

Influenza Virus

Influenza Vaccine

SARS-CoV-2 Fusion

Blood

Kinetochore

Red Blood Cell Cytoskeleton

RecA and DNA

Collagen and Extracellular Matrix

Respiratory Droplet

Myoglobin in a Whale Muscle Cell

Model of a Mycoplasma Cell

Poliovirus Neutralization

Abiogenesis

Biosites: Nucleus

Immunological Synapse

HIV Vaccine

Escherichia coli Bacterium

Zika Virus

Biosites: Basement Membrane

Biosites: Cytoplasm

Autophagy

HIV in Blood Plasma

Biosites: Blood Plasma

Phage-based COVID-19 Vaccine

Escherichia coli

JCVI-syn3A Minimal Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Coronavirus

SARS-CoV-2 and Neutralizing Antibodies

Insulin Release

Coronavirus Life Cycle

CytoSkeleton