Feed aggregator

Astronauts could use fish and human waste to grow food on long trips

HIV and AIDS - пн, 2019-01-21 14:00
On long space missions, fish could help create a closed loop system where space travellers grow all the food they need and recycle all their waste
Категории: Healthcare, Science and society

Every bottle of prosecco may erode 4.4 kilograms of Italian hillside

Genetics - сб, 2019-01-19 11:00
In Italy's traditional prosecco-growing region, estimates suggest that 400,000 tonnes of soil is eroded from the vineyards each year
Категории: Biology

Every bottle of prosecco may erode 4.4 kilograms of Italian hillside

HIV and AIDS - сб, 2019-01-19 11:00
In Italy's traditional prosecco-growing region, estimates suggest that 400,000 tonnes of soil is eroded from the vineyards each year
Категории: Healthcare, Science and society

Every bottle of prosecco may erode 4.4 kilograms of Italian hillside

Genetically modified organisms (GMO) - сб, 2019-01-19 11:00
In Italy's traditional prosecco-growing region, estimates suggest that 400,000 tonnes of soil is eroded from the vineyards each year
Категории: Science and society

Structure of the DP1–DP2 PolD complex bound with DNA and its implications for the evolutionary history of DNA and RNA polymerases

PLOS Biology (new articles) - сб, 2019-01-19 00:00

by Pierre Raia, Marta Carroni, Etienne Henry, Gérard Pehau-Arnaudet, Sébastien Brûlé, Pierre Béguin, Ghislaine Henneke, Erik Lindahl, Marc Delarue, Ludovic Sauguet

PolD is an archaeal replicative DNA polymerase (DNAP) made of a proofreading exonuclease subunit (DP1) and a larger polymerase catalytic subunit (DP2). Recently, we reported the individual crystal structures of the DP1 and DP2 catalytic cores, thereby revealing that PolD is an atypical DNAP that has all functional properties of a replicative DNAP but with the catalytic core of an RNA polymerase (RNAP). We now report the DNA-bound cryo–electron microscopy (cryo-EM) structure of the heterodimeric DP1–DP2 PolD complex from Pyrococcus abyssi, revealing a unique DNA-binding site. Comparison of PolD and RNAPs extends their structural similarities and brings to light the minimal catalytic core shared by all cellular transcriptases. Finally, elucidating the structure of the PolD DP1–DP2 interface, which is conserved in all eukaryotic replicative DNAPs, clarifies their evolutionary relationships with PolD and sheds light on the domain acquisition and exchange mechanism that occurred during the evolution of the eukaryotic replisome.
Категории: Biology, Journals

We've dug up tiny animals from beneath a frozen Antarctic lake

Genetically modified organisms (GMO) - пт, 2019-01-18 18:51
The discovery of preserved carcasses of tiny crustaceans and tardigrades beneath Lake Mercer suggests biologically complex life may survive deep beneath the ice
Категории: Science and society

We've dug up tiny animals from beneath a frozen Antarctic lake

Genetics - пт, 2019-01-18 18:51
The discovery of preserved carcasses of tiny crustaceans and tardigrades beneath Lake Mercer suggests biologically complex life may survive deep beneath the ice
Категории: Biology

We've dug up tiny animals from beneath a frozen Antarctic lake

HIV and AIDS - пт, 2019-01-18 18:51
The discovery of preserved carcasses of tiny crustaceans and tardigrades beneath Lake Mercer suggests biologically complex life may survive deep beneath the ice
Категории: Healthcare, Science and society

10 year challenge: How science and the world have changed

Genetically modified organisms (GMO) - пт, 2019-01-18 17:36
The last 10 years have seen amazing advances in science and technology – and stark damage to the world we live in. Like a lot of people on social media we thought we'd take a look back at the last ten years in science and New Scientist
Категории: Science and society

10 year challenge: How science and the world have changed

Genetics - пт, 2019-01-18 17:36
The last 10 years have seen amazing advances in science and technology – and stark damage to the world we live in. Like a lot of people on social media we thought we'd take a look back at the last ten years in science and New Scientist
Категории: Biology

10 year challenge: How science and the world have changed

HIV and AIDS - пт, 2019-01-18 17:36
The last 10 years have seen amazing advances in science and technology – and stark damage to the world we live in. Like a lot of people on social media we thought we'd take a look back at the last ten years in science and New Scientist
Категории: Healthcare, Science and society

Australia swelters in record temperatures with warmest ever night

Genetics - пт, 2019-01-18 14:23
Noona in New South Wales recorded Australia's warmest ever night with temperatures remaining above 35.9°C on 17 January
Категории: Biology

Australia swelters in record temperatures with warmest ever night

HIV and AIDS - пт, 2019-01-18 14:23
Noona in New South Wales recorded Australia's warmest ever night with temperatures remaining above 35.9°C on 17 January
Категории: Healthcare, Science and society

Australia swelters in record temperatures with warmest ever night

Genetically modified organisms (GMO) - пт, 2019-01-18 14:23
Noona in New South Wales recorded Australia's warmest ever night with temperatures remaining above 35.9°C on 17 January
Категории: Science and society

Peacocks might use their showy tails for covert communication

Genetics - пт, 2019-01-18 10:00
Tigers, leopards and dogs all hunt peacocks, but their colour vision is poor, suggesting they might not actually notice a peacock's colourful tail
Категории: Biology

Peacocks might use their showy tails for covert communication

HIV and AIDS - пт, 2019-01-18 10:00
Tigers, leopards and dogs all hunt peacocks, but their colour vision is poor, suggesting they might not actually notice a peacock's colourful tail
Категории: Healthcare, Science and society

Peacocks might use their showy tails for covert communication

Genetically modified organisms (GMO) - пт, 2019-01-18 10:00
Tigers, leopards and dogs all hunt peacocks, but their colour vision is poor, suggesting they might not actually notice a peacock's colourful tail
Категории: Science and society

Behind the Sheet review: Eye-opening play follows slaves’ story

Genetics - пт, 2019-01-18 03:01
The story of the unsung slave women who helped end an excruciating condition by enduring surgery without anaesthetic makes a play that deserves a wide audience
Категории: Biology

Behind the Sheet review: Eye-opening play follows slaves’ story

HIV and AIDS - пт, 2019-01-18 03:01
The story of the unsung slave women who helped end an excruciating condition by enduring surgery without anaesthetic makes a play that deserves a wide audience
Категории: Healthcare, Science and society

Behind the Sheet review: Eye-opening play follows slaves’ story

Genetically modified organisms (GMO) - пт, 2019-01-18 03:01
The story of the unsung slave women who helped end an excruciating condition by enduring surgery without anaesthetic makes a play that deserves a wide audience
Категории: Science and society