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.

Deoxyhemoglobin

Hemoglobin (1000)

Lac Repressor

Induced Lac Repressor

Deoxyribonucleic Acid (DNA)

Aspartate Transcarbamoylase (ATCase)

Z-DNA

Transfer Ribonucleic Acid (tRNA)

Carboxypeptidase A

Cytochrome c

Myoglobin Fold

Hemoglobin

Trypsin

DPG-Hemoglobin Complex

Collagen

DNA

Oxyhemoglobin

A-DNA

Cytochrome c (unbound)

Ribonuclease S

Lysozyme (488)

Tomato Bushy Stunt Virus (TBSV)

Myohemerythrin

Hemoglobin S

TATA-Binding Protein (TBP)

Intermolecular Contacts in Hemoglobin S

Myoglobin

Lysozyme (512)

B-DNA

Immunoglobulin G (IgG)

Crambin

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

Red Blood Cell Cytoskeleton

Immunological Synapse

HIV-Infected Cell

Escherichia coli

Biosites: Muscle

Last Universal Common Ancestor

SARS-CoV-2 and Neutralizing Antibodies

Myoglobin in a Whale Muscle Cell

Collagen and Extracellular Matrix

Insulin Release

Coronavirus Life Cycle

Measles Virus Proteins

Mycoplasma mycoides

JCVI-syn3A Minimal Cell

SARS-CoV-2 mRNA Vaccine

Casein Micelle and Fat Globule in Milk

Abiogenesis

Ebola Virus

Zika Virus

Blood

Excitatory and Inhibitory Synapses

Influenza Vaccine

Vascular Endothelial Growth Factor (VegF) Signaling

Phage-based COVID-19 Vaccine

Respiratory Droplet

HIV Vaccine

Model of a Mycoplasma Cell

Escherichia coli Bacterium

Coronavirus

Biosites: Blood Plasma

Chloroplast

Insulin Action

Caulobacter Polar Microdomain

Biosites: Basement Membrane

Bacteriophage T4 Infection

Autophagy

Kinetochore

CytoSkeleton

Transfer RNA and Gag Protein

Cellulose Synthase

Lipid Droplets

Biosites: Cytoplasm

HIV in Blood Plasma

Myelin

SARS-CoV-2 Fusion

Biosites: Nucleus

Influenza Virus

RecA and DNA

Biosites: Red Blood Cell

Poliovirus Neutralization