The B. anthracis Picture Is Now Complete

After a three-year effort, scientists have determined the crystal structure of edema factor, a toxic protein secreted by Bacillus anthracis, the bacteria that causes anthrax.1 Edema factor (EF) works in concert with two other anthrax proteins—protective antigen (PA) and lethal factor (LF)—to kill its host cell. PA's crystal structure was reported in 19972 and LF's in November 2001.3 With this three-dimensional map now in hand, researchers are making headway into understanding how the

Written byLeslie Pray
| 4 min read

Register for free to listen to this article
Listen with Speechify
0:00
4:00
Share

Drugs that target the toxic proteins would be a big boost for treatment against anthrax since antibiotics are not always an effective antidote. Even though most B. anthracis strains are susceptible to antibiotics, there is a certain point during the course of infection, after which so much toxic protein has accumulated, that no amount of antibiotic does any good. But if an arsenal of antitoxins existed that could be administered at this later stage of infection, such drugs could be used to "cure those unfortunate patients," according to Wei-Jen Tang, a professor at the University of Chicago's Ben-May Institute for Cancer Research and coauthor on the recent Nature paper.1 Tang says he suspects that antitoxins could have saved the lives recently lost from inhalation anthrax.

EF is one of several adenylyl cyclases, molecules that convert ATP into cyclic AMP (cAMP). Cyclic AMP exists in almost every organism outside of plants, ...

Interested in reading more?

Become a Member of

The Scientist Logo
Receive full access to digital editions of The Scientist, as well as TS Digest, feature stories, more than 35 years of archives, and much more!
Already a member? Login Here

Meet the Author

Published In

Share
Image of a woman with her hands across her stomach. She has a look of discomfort on her face. There is a blown up image of her stomach next to her and it has colorful butterflies and gut bacteria all swarming within the gut.
November 2025, Issue 1

Why Do We Feel Butterflies in the Stomach?

These fluttering sensations are the brain’s reaction to certain emotions, which can be amplified or soothed by the gut’s own “bugs".

View this Issue
Olga Anczukow and Ryan Englander discuss how transcriptome splicing affects immune system function in lung cancer.

Long-Read RNA Sequencing Reveals a Regulatory Role for Splicing in Immunotherapy Responses

Pacific Biosciences logo
Research Roundtable: The Evolving World of Spatial Biology

Research Roundtable: The Evolving World of Spatial Biology

Conceptual cartoon image of gene editing technology

Exploring the State of the Art in Gene Editing Techniques

Bio-Rad
Conceptual image of a doctor holding a brain puzzle, representing Alzheimer's disease diagnosis.

Simplifying Early Alzheimer’s Disease Diagnosis with Blood Testing

fujirebio logo

Products

Labvantage Logo

LabVantage Solutions Awarded $22.3 Million U.S Customs and Border Protection Contract to Deliver Next-Generation Forensic LIMS

The Scientist Placeholder Image

Evosep Unveils Open Innovation Initiative to Expand Standardization in Proteomics

OGT logo

OGT expands MRD detection capabilities with new SureSeq Myeloid MRD Plus NGS Panel