Navigation Links
When every photon counts
Date:4/20/2009

This release is available in German.

The eyes of nocturnal mammals contain particularly large numbers of the highly light-sensitive rods, the photoreceptor type used for night vision. This allows the detection of light levels millions of times lower than daylight. Researchers at the Ludwig Maximilians University Munich, the Max Planck Institute for Brain Research Frankfurt and the Cavendish Laboratory Cambridge have now shown that the nocturnal lifestyle and its visual challenges had a unique impact on rod nuclear organisation: The distributions of the densely packed inactive and the less densely packed active regions of DNA differ remarkably from those in other somatic cells of nearly all organisms from protozoans to multicellular animals, including the rods of diurnal mammals. With this unique arrangement, the rod nuclei of nocturnal mammals act as micro-lenses that focus the incoming light. Computer simulations show that stacks of such nuclei effectively guide the light to the light-sensitive outer segments of the rods. Hence, this change in rod nuclear organisation improves vision at nocturnal low light levels. It also provides new insights into the evolution of the mammalian retina and furthers our understanding of the nuclear architecture in general. (Cell, April 17th, 2009)

The DNA of a mammalian cell is about two metres long if all base pairs were aligned in one string. To fit this genetic material in a nucleus of only a few microns diameter, the DNA is wrapped around millions of so-called histon proteins that are arranged like pearls on a string, leading to a 10,000-fold compaction of the DNA. This DNA-protein complex is termed chromatin. Chromatin regions with genetic information that needs to be read out and transcribed by enzymes in a given cell at a given time are less tightly packed and more easily accessible. These chromatin pa
'/>"/>

Contact: Dr. Leo Peichl
peichl@mpih-frankfurt.mpg.de
49-699-676-9348
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Best way to treat malaria: Avoid using same drug for everyone, scientists say
2. MSU biofilms research helps set standards for everyday products
3. Tracking influenzas every movement
4. Everythings coming up corals
5. Not just for the monkeys: New publication shows evolution is everywhere
6. 1 person out of every 1,000 has synaesthesia, in which an individual can smell a sound
7. Photonic crystal biosensors detect protein-DNA interactions
8. The photonic beetle
9. Research at Argonnes Advanced Photon Source reveals structure and behavior of collagen
10. Ecologists say metabolism accounts for why natural selection favors only some species
11. Eltrombopag effective for hepatitis C patients with low blood-platelet counts
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
When every photon counts
(Date:4/13/2015)...  higi, a leading cloud-based consumer engagement platform that ... with their communities around health and wellness, announced today ... API.  ... and convenient vehicle to receive validated health information from ... The API will allow higi,s trusted partners, on a ...
(Date:4/9/2015)... , April 9, 2015 Synaptics Inc. (NASDAQ: ... announced today that it will report financial results for ... 23, 2015, after the close of market. The company ... investors at 2:00 p.m. PT (5:00 p.m. ET), during ... To participate on the live call, analysts and investors ...
(Date:4/6/2015)... , Apr. 6, 2015 NXT-ID, Inc. ... a biometric authentication company focused on the growing ... filed provisional patent 62/143028 for MINIATURE, ... ENERGY TRANSFER  NXT-ID introduces a new ... This patent surrounds the use of miniature antenna ...
Breaking Biology News(10 mins):higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 2higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 3Synaptics to Report Third Quarter Results on April 23 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 3NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 4
... Even though organic methods may increase farm biodiversity, a ... be a better way to maintain food production and ... of butterfly populations in UK landscapes by scientists at ... organic farms have more butterflies than conventional farms, but ...
... produced a peak amount of electricity estimated at 7.4 GW, ... to previous years, this shows the EU,s dominance, where more ... installed. By the end of 2009, Europe,s cumulative installed PV ... which is about 70% of the world,s total (22GW). These ...
... on bacteria that instructs bone cells to die could be ... scientist speaking at the Society for General Microbiology,s autumn meeting ... a way of treating painful bone infections that are resistant ... aureus (MRSA). Bone disease, or osteomyelitis, affects 1 ...
Cached Biology News:Is organic farming good for wildlife? It depends on the alternative 2Is organic farming good for wildlife? It depends on the alternative 3Three-quarters of new solar systems worldwide were installed in the EU in 2009 2Three-quarters of new solar systems worldwide were installed in the EU in 2009 3Interrupting death messages to treat bone disease 2
(Date:5/21/2015)... May 21, 2015 /PRNewswire/ - SQI Diagnostics Inc. ("SQI" ... company that develops and commercializes proprietary technologies and products ... operational results for the second fiscal quarter ended March ... Company continued to advance business with our existing customers ... , President and CEO of SQI. "The delivery of ...
(Date:5/21/2015)... Specialty Pharmacy Times has completed ... to BPA Worldwide as a business publication member. ... data for Specialty Pharmacy Times based on business/distribution, ... a member of BPA Worldwide, Specialty Pharmacy Times ... with the most reliable, unequaled data,” said Chris ...
(Date:5/21/2015)... , May 21, 2015  Prima Biomed Ltd. (NASDAQ: ... is striving to become a leader in the development ... announced that the final CVac data from the Phase ... clear trend for a clinically meaningful improvement in Overall ... remission patients. In the group of second ...
(Date:5/21/2015)... , May 21, 2015  The EveryLife ... Hatch (R-UT) and Amy Klobuchar ... Now Accelerating Cures & Treatments, or OPEN ACT. ... disease patient advocacy organizations, this bipartisan legislation promises ... affordable medicines to rare disease patients by incentivizing ...
Breaking Biology Technology:SQI Diagnostics Reports Second Quarter Financial Results 2SQI Diagnostics Reports Second Quarter Financial Results 3SQI Diagnostics Reports Second Quarter Financial Results 4SQI Diagnostics Reports Second Quarter Financial Results 5SQI Diagnostics Reports Second Quarter Financial Results 6SQI Diagnostics Reports Second Quarter Financial Results 7SQI Diagnostics Reports Second Quarter Financial Results 8Specialty Pharmacy Times Joins BPA Worldwide 2Correction Continues after Big Move - BrokerBank Securities, Inc. 2Advocates Cheer Senate Leaders for Introducing Bipartisan Bill to Increase Number of Rare Disease Treatments 2
... , , COLUMBIA, Md., Aug. ... ), today announced the signing of a Joint Development Agreement (JDA) ... The partnership combines a broad technology platform and operational capabilities to ... sugars into biodiesel. , , Under the ...
... , , , ... today announced that BD Biosciences, a segment of BD (Becton, ... Search and Pathway Navigation technologies into its new website. ... will enable its research customers to quickly and easily identify ...
... ... Spectrum Chemicals & Laboratory Products (Spectrum) announced the distribution ... increase productivity and lessen injuries due to repetitive hand crimping. ... is engineered to improve throughput in laboratories performing chromatography, analytical ...
Cached Biology Technology:BP and Martek Biosciences Enter a Joint Development Agreement to Deliver Advanced Biodiesels 2BP and Martek Biosciences Enter a Joint Development Agreement to Deliver Advanced Biodiesels 3BP and Martek Biosciences Enter a Joint Development Agreement to Deliver Advanced Biodiesels 4Ingenuity's Technology Powers BD Cell Pathways Tool on New BD Biosciences Website 2Spectrum Announces New Distribution of AC-Powered Tool for Crimping and Decapping of Laboratory Vials - The CRIMPenstein™ 2
MOUSE ANTI DUCK IgY LIGHT CHAIN...
ANTI END CEL LUNG AG...
EGTA, 50 g. Ethylene glycol-O,O-bis-[2-amino-ethyl]-N,N,N,N,-tetraacetic acid.Assay: > 99.0%. Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
Request Info...
Biology Products: