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

Crambin

Hemoglobin (1000)

Deoxyribonucleic Acid (DNA)

Intermolecular Contacts in Hemoglobin S

Carboxypeptidase A

DPG-Hemoglobin Complex

Transfer Ribonucleic Acid (tRNA)

Lysozyme (512)

Hemoglobin

Oxyhemoglobin

Deoxyhemoglobin

Lac Repressor

Lysozyme (488)

Trypsin

Tomato Bushy Stunt Virus (TBSV)

Myoglobin Fold

Aspartate Transcarbamoylase (ATCase)

B-DNA

Cytochrome c

Ribonuclease S

Cytochrome c (unbound)

Collagen

Myoglobin

A-DNA

Induced Lac Repressor

Immunoglobulin G (IgG)

Z-DNA

TATA-Binding Protein (TBP)

Hemoglobin S

DNA

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

Cellulose Synthase

Insulin Release

Autophagy

Transfer RNA and Gag Protein

Influenza Vaccine

CytoSkeleton

Respiratory Droplet

Escherichia coli

HIV Vaccine

Kinetochore

Poliovirus Neutralization

Escherichia coli Bacterium

Excitatory and Inhibitory Synapses

Caulobacter Polar Microdomain

JCVI-syn3A Minimal Cell

Phage-based COVID-19 Vaccine

Vascular Endothelial Growth Factor (VegF) Signaling

HIV-Infected Cell

Ebola Virus

Collagen and Extracellular Matrix

HIV in Blood Plasma

Model of a Mycoplasma Cell

Chloroplast

Biosites: Nucleus

Lipid Droplets

Biosites: Cytoplasm

Influenza Virus

Bacteriophage T4 Infection

Abiogenesis

Mycoplasma mycoides

SARS-CoV-2 Fusion

SARS-CoV-2 mRNA Vaccine

Coronavirus

Insulin Action

Myoglobin in a Whale Muscle Cell

Biosites: Blood Plasma

Biosites: Muscle

Casein Micelle and Fat Globule in Milk

Blood

Last Universal Common Ancestor

Red Blood Cell Cytoskeleton

Immunological Synapse

Measles Virus Proteins

Coronavirus Life Cycle

SARS-CoV-2 and Neutralizing Antibodies

RecA and DNA

Biosites: Red Blood Cell

Zika Virus

Myelin

Biosites: Basement Membrane