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.

Myoglobin

A-DNA

Lysozyme (488)

Carboxypeptidase A

Myoglobin Fold

Tomato Bushy Stunt Virus (TBSV)

Oxyhemoglobin

Ribonuclease S

Cytochrome c (unbound)

Induced Lac Repressor

Lysozyme (512)

Crambin

TATA-Binding Protein (TBP)

Hemoglobin (1000)

DPG-Hemoglobin Complex

Cytochrome c

Collagen

Immunoglobulin G (IgG)

Hemoglobin S

Intermolecular Contacts in Hemoglobin S

Z-DNA

DNA

B-DNA

Trypsin

Lac Repressor

Myohemerythrin

Deoxyribonucleic Acid (DNA)

Aspartate Transcarbamoylase (ATCase)

Hemoglobin

Deoxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

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

Biosites: Cytoplasm

Biosites: Nucleus

Escherichia coli Bacterium

Model of a Mycoplasma Cell

Blood

Vascular Endothelial Growth Factor (VegF) Signaling

CytoSkeleton

SARS-CoV-2 and Neutralizing Antibodies

Influenza Virus

SARS-CoV-2 mRNA Vaccine

Insulin Release

Immunological Synapse

Chloroplast

Excitatory and Inhibitory Synapses

Collagen and Extracellular Matrix

Red Blood Cell Cytoskeleton

Cellulose Synthase

RecA and DNA

HIV in Blood Plasma

Myoglobin in a Whale Muscle Cell

Coronavirus

Myelin

Transfer RNA and Gag Protein

Bacteriophage T4 Infection

Caulobacter Polar Microdomain

Last Universal Common Ancestor

Poliovirus Neutralization

Ebola Virus

Insulin Action

Lipid Droplets

Autophagy

HIV Vaccine

Phage-based COVID-19 Vaccine

Kinetochore

JCVI-syn3A Minimal Cell

Zika Virus

Measles Virus Proteins

Biosites: Basement Membrane

Abiogenesis

Coronavirus Life Cycle

Influenza Vaccine

SARS-CoV-2 Fusion

Escherichia coli

Biosites: Blood Plasma

Biosites: Red Blood Cell

Respiratory Droplet

Casein Micelle and Fat Globule in Milk

Mycoplasma mycoides

Biosites: Muscle