Opening cages, using tools. Here’s yet another reason to love octopuses.
. Since then, the researchers have examined multiple species of octopus, squid and cuttlefish, each time finding tens of thousands of recoding sites.
Having a wide selection of proteins may give cephalopods “more flexibility in responding to the environment,” Albertin says, “or give you a variety of solutions to the problem in front of you.” In the nervous system, RNA editing might contribute to flexibility in thinking, which could help explain why octopuses can unlock cages or use tools, some researchers think.
In longfin squid, the mRNA that produces kinesin-1 has 14 recoding sites, Rangan has found. She examined mRNAs from the optic lobe — the part of the brain that processes visual information — and from the stellate ganglion, a collection of nerves involved in generating the muscle contractions that produce jets of water to propel the squid., Rangan and Samara Reck-Peterson, also of UC San Diego, reported last September in a preprint posted online at bioRxiv.org.
If it’s not all that helpful, why have cephalopods persisted with RNA recoding for hundreds of millions of years? RNA editing may stick around not because it is adaptive, but because it is addictive, Zhang says. RNA editing may work as a transition phase, letting organisms try out a switch from adenine to guanine without making a permanent change in their DNA. Over the course of evolution, sites where adenines are recoded in RNA in one cephalopod species are more likely than unedited adenines to be. And for heavily edited sites, evolution across cephalopods seems to favor a transition from A to G in DNA . That favors the idea that editing can be adaptive.
Indonesia Berita Terbaru, Indonesia Berita utama
Similar News:Anda juga dapat membaca berita serupa dengan ini yang kami kumpulkan dari sumber berita lain.
The Fast & Furious Nissan R34 GT-R Driven By Paul Walker Sells For Record $1.4M | CarscoopsPaul Walker oversaw the modifications made to this Bayside Blue 2000 Nissan Skyline GT-R car auto cars
Baca lebih lajut »
Dog DNA Kits Are A Thing That Exist So We Tested It Out On Our PupsYou've heard of human DNA tests and now...there are ones for dogs!
Baca lebih lajut »
Experts Alarmed by Tech That Identifies Human DNA Floating in AirScientists have figured out a way to retrieve tiny traces of human genetic material called environmental DNA (eDNA) from thin air.
Baca lebih lajut »
New DNA Research Changes Origin of Human SpeciesNew model for human evolution suggests Homo sapiens arose from multiple closely related populations. A new study in Nature challenges prevailing theories, suggesting that Homo sapiens evolved from multiple diverse populations across Africa, with the earliest detectable split occurring 120,000-135
Baca lebih lajut »
Exploring the centromere and its role in the formation of new speciesCentromeres, the DNA sections often found at the center of the chromosomes, display enormous interspecies diversity, despite having the same vital role during cell division across almost the entire tree of life. An international team of researchers has discovered that the variation in centromere DNA regions can be strikingly large even within a single species.
Baca lebih lajut »