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.

TATA-Binding Protein (TBP)

Hemoglobin S

Oxyhemoglobin

Lysozyme (488)

DNA

Cytochrome c

Cytochrome c (unbound)

Trypsin

Transfer Ribonucleic Acid (tRNA)

Intermolecular Contacts in Hemoglobin S

Deoxyribonucleic Acid (DNA)

Z-DNA

Crambin

DPG-Hemoglobin Complex

Tomato Bushy Stunt Virus (TBSV)

Lysozyme (512)

Ribonuclease S

Myoglobin Fold

Aspartate Transcarbamoylase (ATCase)

Myoglobin

Hemoglobin (1000)

Immunoglobulin G (IgG)

Myohemerythrin

A-DNA

Carboxypeptidase A

Collagen

Hemoglobin

Induced Lac Repressor

B-DNA

Lac Repressor

Deoxyhemoglobin

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

Chloroplast

HIV in Blood Plasma

RecA and DNA

Ebola Virus

Insulin Release

Escherichia coli Bacterium

Transfer RNA and Gag Protein

Bacteriophage T4 Infection

Escherichia coli

Coronavirus Life Cycle

Kinetochore

Phage-based COVID-19 Vaccine

Biosites: Nucleus

Biosites: Cytoplasm

Collagen and Extracellular Matrix

SARS-CoV-2 mRNA Vaccine

Coronavirus

Excitatory and Inhibitory Synapses

Immunological Synapse

Myoglobin in a Whale Muscle Cell

Mycoplasma mycoides

Caulobacter Polar Microdomain

Model of a Mycoplasma Cell

Influenza Vaccine

Cellulose Synthase

Red Blood Cell Cytoskeleton

Abiogenesis

Casein Micelle and Fat Globule in Milk

Myelin

HIV-Infected Cell

CytoSkeleton

Respiratory Droplet

HIV Vaccine

Biosites: Blood Plasma

Insulin Action

Measles Virus Proteins

Autophagy

Biosites: Red Blood Cell

Blood

Lipid Droplets

SARS-CoV-2 and Neutralizing Antibodies

Poliovirus Neutralization

Zika Virus

Influenza Virus

SARS-CoV-2 Fusion

Biosites: Muscle

JCVI-syn3A Minimal Cell

Last Universal Common Ancestor

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Basement Membrane