Seismological data can yield physical properties of the Earth's core, such as its size and
seismic anisotropy 1 , 2 , 3 . A well-constrained iron phase diagram, however, is essential to …

We report a new Streptomyces species named S. formicae that was isolated from the African
fungus-growing plant-ant Tetraponera penzigi and show that it produces novel pentacyclic …

Polarized growth in eukaryotes requires polar multiprotein complexes. Here, we establish
that selection and maintenance of cell polarity for growth also requires a dedicated …

Streptomyces bacteria are ubiquitous in soils and are well known for producing secondary
metabolites, including antimicrobials. Increasingly, they are being isolated from plant roots, …

Studies of transcriptional initiation in different bacterial clades reveal diverse molecular
mechanisms regulating this first step in gene expression. The WhiA and WhiB factors are both …

Acromyrmex leafcutter ants form a mutually beneficial symbiosis with the fungus Leucoagaricus
gongylophorus and with Pseudonocardia bacteria. Both are vertically transmitted and …

Streptomyces are our primary source of antibiotics, produced concomitantly with the transition
from vegetative growth to sporulation in a complex developmental life cycle. We previously …

The attine ants of South and Central America are ancient farmers, having evolved a symbiosis
with a fungal food crop >50 million years ago. The most evolutionarily derived attines are …

MtrAB is a highly conserved two-component system implicated in the regulation of cell division
in the Actinobacteria. It coordinates DNA replication with cell division in the unicellular …

Streptomyces bacteria make numerous secondary metabolites, including half of all known
antibiotics. Production of antibiotics is usually coordinated with the onset of sporulation but the …