Proceedings of the National Academy of Sciences (PNAS)

Table Of Contents Page, PNAS Volume 122, Number 49

NASA’s OSIRIS-REx mission characterized the asteroid Bennu and delivered pristine samples of its regolith to Earth. Coordinated analyses of this primitive, carbonaceous material are elucidating the ...
PNAS

On the Anaphase Movement of Chromosomes

On the Anaphase Movement of ChromosomesNote: 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

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

Teasing out biochemical information from ancient organic-rich sediments, notably the timing of the emergence of photosynthesis relative to the inferred oxygenation of Earth’s atmosphere, remains a ...
PNAS

COMPARISON OF POPULATION ENERGY FLOW OF A HERBIVOROUS AND A DEPOSIT-FEEDING INVERTEBRATE IN A SALT MARSH ECOSYSTEM

We explore the key differences between the main social media platforms and how they are likely to influence information spreading and the formation of echo chambers. To assess the different dynamics, ...
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

COMMUTATORS OF SINGULAR INTEGRAL OPERATORS

COMMUTATORS OF SINGULAR INTEGRAL OPERATORS*Teasing out biochemical information from ancient organic-rich sediments, notably the timing of the emergence of photosynthesis relative to the inferred ...
PNAS

Mechanism of action of penicillins: a proposal based on their structural similarity to acyl-D-alanyl-D-alanine.

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

In This Issue

Starosele rock shelter in the Crimean Peninsula. Image credit: Serhii Telizhenko (National Academy of Sciences of Ukraine, Kyiv, Ukraine). The Crimean Peninsula is hypothesized to have been a refuge ...
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

ON FORCE-FREE MAGNETIC FIELDS

ON FORCE-FREE MAGNETIC FIELDSNote: 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 ...
PNAS

Electron paramagnetic resonance of chlorophyll-water aggregates.

Electron paramagnetic resonance of chlorophyll-water aggregates.Teasing out biochemical information from ancient organic-rich sediments, notably the timing of the emergence of photosynthesis relative ...