Molecule of the Month
March 2025

Enoyl-CoA Carboxylases/Reductases

Enzymes that can quickly and efficiently fix carbon

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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.

B-DNA

Crambin

Cytochrome c (unbound)

Deoxyhemoglobin

Immunoglobulin G (IgG)

Myohemerythrin

Hemoglobin

Lysozyme (512)

Oxyhemoglobin

Hemoglobin S

Tomato Bushy Stunt Virus (TBSV)

Cytochrome c

Transfer Ribonucleic Acid (tRNA)

Deoxyribonucleic Acid (DNA)

A-DNA

Lac Repressor

Trypsin

Myoglobin Fold

DNA

Collagen

TATA-Binding Protein (TBP)

Myoglobin

Z-DNA

Lysozyme (488)

DPG-Hemoglobin Complex

Induced Lac Repressor

Intermolecular Contacts in Hemoglobin S

Ribonuclease S

Carboxypeptidase A

Aspartate Transcarbamoylase (ATCase)

Hemoglobin (1000)

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

Respiratory Droplet

Excitatory and Inhibitory Synapses

Blood

Measles Virus Proteins

Red Blood Cell Cytoskeleton

Insulin Release

Myelin

HIV Vaccine

Escherichia coli

HIV in Blood Plasma

Model of a Mycoplasma Cell

Lipid Droplets

Insulin Action

HIV-Infected Cell

Autophagy

Cellulose Synthase

Escherichia coli Bacterium

Mycoplasma mycoides

CytoSkeleton

Influenza Vaccine

SARS-CoV-2 Fusion

Biosites: Blood Plasma

Myoglobin in a Whale Muscle Cell

Abiogenesis

Caulobacter Polar Microdomain

Biosites: Red Blood Cell

RecA and DNA

JCVI-syn3A Minimal Cell

Casein Micelle and Fat Globule in Milk

Transfer RNA and Gag Protein

Biosites: Nucleus

Poliovirus Neutralization

Collagen and Extracellular Matrix

Chloroplast

Bacteriophage T4 Infection

Phage-based COVID-19 Vaccine

Zika Virus

Biosites: Basement Membrane

Biosites: Muscle

Kinetochore

Coronavirus

Ebola Virus

Last Universal Common Ancestor

SARS-CoV-2 mRNA Vaccine

Biosites: Cytoplasm

Vascular Endothelial Growth Factor (VegF) Signaling

SARS-CoV-2 and Neutralizing Antibodies

Influenza Virus

Immunological Synapse

Coronavirus Life Cycle