PNAS

In This Issue

Artistic reconstruction of shallow marine faunas from the early Palaeozoic Era of North Dakota, spanning the Early (Left) to Middle (Right) Ordovician Period. Image credit: Franz Anthony (artist). The ...
PNAS

Dux cluster duplication ensures full activation of totipotent genes

Among them, Dux has been considered as a master inducer for regulating ZGA process (3 – 5). Dux (also named as Duxf3) in mice and its human homolog DUX4 are double homeodomain genes activated during ...
PNAS

Publication Charges

PNAS depends, in part, on the payment of article processing charges (APCs) to finance its operations. Papers are accepted or rejected for publication and published solely on the basis of merit. For ...
PNAS

ACETYLATION AND METHYLATION OF HISTONES AND THEIR POSSIBLE ROLE IN THE REGULATION OF RNA SYNTHESIS

Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear immediately following publication. Citation ...
PNAS

RAMAN SPECTRA FROM ACETONE

RAMAN SPECTRA FROM ACETONENote: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear immediately following ...
PNAS

COMMUTATORS OF SINGULAR INTEGRAL OPERATORS

COMMUTATORS OF SINGULAR INTEGRAL OPERATORS*Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear ...
PNAS

The ergodicity question when imaging DNA conformation using liquid cell electron microscopy

Assessing the ergodicity of graphene liquid cell electron microscope measurements, we report that loop states of circular DNA interconvert reversibly and that loop numbers follow the Boltzmann ...
PNAS

In This Issue

Humpback whale (Megaptera novaeangliae) diving. X-ray ptychography is an imaging technique that could potentially produce single-digit, nanometer-scale visualizations of internal structures without ...
PNAS

James A. Estes: An ecologist’s quest to understand nature

For five decades, Jim A. Estes studied sea otters in the Aleutian archipelago of Alaska, discovering how otters structured entire communities. By consuming sea urchins, otters released kelp from ...
PNAS

A Biometric Study of Human Basal Metabolism

A Biometric Study of Human Basal MetabolismWe explore the key differences between the main social media platforms and how they are likely to influence information spreading and the formation of echo ...
PNAS

THE KINETICS OF FORMATION OF NATIVE RIBONUCLEASE DURING OXIDATION OF THE REDUCED POLYPEPTIDE CHAIN

Emotions coordinate our behavior and physiological states during survival-salient events and pleasurable interactions. Even though we are often consciously aware of our current emotional state, such ...
PNAS

Correction for Zhou et al., 9,000-year-old barley consumption in the foothills of central Asia

The authors note that the following statement should be added to the Acknowledgments: “This work was supported by the National Key Research and Development Program of China (2022YFF0801102 and ...