Molecule of the Month
March 2023

Anaphase-Promoting Complex / Cyclosome

APC/C guards the checkpoints that regulate key steps in the cell cycle

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3D View:  5a31

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Health Focus: Cancer Biology and Therapeutics

Cells in our bodies are carefully regulated so that they divide, grow, and die according to the best plan for keeping us alive. When they lose these controls, they can grow into deadly cancers. Atomic structures have revealed how cell growth is normally controlled, and how cancer cells circumvent these essential controls. Explore PDB-101 Resources to learn about proteins related to cancer biology and therapeutics.


2023 Video Challenge for High School Students

Molecular Mechanisms of Targeted Cancer Therapies

Entries for the Video Challenge can be submitted now until April 24, 11:59 pm PST. Award winners will be announced on May 16.

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PDB data help explain fundamental biology, biomedicine, bioengineering/biotechnology, and energy sciences
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Exploring Computed Structure Models on RCSB.org

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Fundamentals of Biochemistry: A free online biochemistry textbook with interactive molecular and mathematical modeling by Henry Jakubowski (Professor Emertius)

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.

A-DNA

Intermolecular Contacts in Hemoglobin S

Hemoglobin

Myoglobin

Myoglobin Fold

Hemoglobin S

Lac Repressor

Cytochrome c (unbound)

Collagen

Lysozyme (512)

Deoxyribonucleic Acid (DNA)

TATA-Binding Protein (TBP)

Lysozyme (488)

DNA

Tomato Bushy Stunt Virus (TBSV)

Oxyhemoglobin

Carboxypeptidase A

DPG-Hemoglobin Complex

Hemoglobin (1000)

Induced Lac Repressor

Z-DNA

Deoxyhemoglobin

Trypsin

Myohemerythrin

Cytochrome c

Ribonuclease S

Transfer Ribonucleic Acid (tRNA)

Aspartate Transcarbamoylase (ATCase)

B-DNA

Crambin

Immunoglobulin G (IgG)

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

Collagen and Extracellular Matrix

Biosites: Cytoplasm

HIV Vaccine

Biosites: Basement Membrane

Myoglobin in a Whale Muscle Cell

Poliovirus Neutralization

Coronavirus

Last Universal Common Ancestor

Immunological Synapse

Transfer RNA and Gag Protein

Phage-based COVID-19 Vaccine

Insulin Action

Coronavirus Life Cycle

Measles Virus Proteins

Influenza Vaccine

Escherichia coli Bacterium

Mycoplasma mycoides

Zika Virus

Ebola Virus

Chloroplast

Biosites: Muscle

Abiogenesis

Vascular Endothelial Growth Factor (VegF) Signaling

Casein Micelle and Fat Globule in Milk

Biosites: Blood Plasma

JCVI-syn3A Minimal Cell

SARS-CoV-2 mRNA Vaccine

Caulobacter Polar Microdomain

CytoSkeleton

RecA and DNA

Biosites: Red Blood Cell

HIV in Blood Plasma

Model of a Mycoplasma Cell

Escherichia coli

Autophagy

Insulin Release

Respiratory Droplet

Lipid Droplets

Excitatory and Inhibitory Synapses

Red Blood Cell Cytoskeleton

SARS-CoV-2 Fusion

SARS-CoV-2 and Neutralizing Antibodies

HIV-Infected Cell

Myelin

Blood

Cellulose Synthase

Biosites: Nucleus