Science: Theoretically ... Dinosaur-speak/ Mouse urine/ Mussel power/ Mir walks again
Tuesday 06 January 1998
The New Mexico Museum of Natural History put the sound on its Web site - http://www.nmmnh-abq. mus.nm.us/nmmnh/nmmnh.html - early last month. The following weekend, the site was so overloaded, with four times more visitors than usual, that it crashed four times.
A team in New Zealand is trying to synthesise a protein produced by mussels, in the hope that it can be used to close human wounds without stitches. It's the same protein that the shellfish use as their natural glue to stick them on to rocks and survive the battering of waves, and is secreted by a gland in the "foot". The key question is whether the body rejects the protein: if not, then it could make stitches redundant.
The amino acid components of the protein were first identified in 1985, but mis-sequenced - a mistake not realised until 1994. The key is dihydroxyproline, one of the rarest amino acids and not available commercially. Manufacturing that will be the team's biggest task; then they will try testing it on humans.
Things are back to normal on Mir: the computer keeps breaking down. The crew of two Russians and one American spent Sunday fixing a problem with the main computer which had shut down on Friday, and caused the failure of the gyroscope system that keeps Mir ideally oriented to catch the sun's rays to generate power.
With that done, yesterday was occupied with checking spacesuits before two spacewalks this week. The first, planned for Thursday, will try to install a new airtight rubber seal on the exit hatch of Mir's Kvant-2 module, which failed to close properly after their spacewalk last November. The resulting partial loss of pressure has affected only Kvant's docking chamber. The other spacewalk, planned for 14 January, is to retrieve American scientific equipment on the outside of the station.
Drinking mouse urine doesn't sound pleasant, but it could turn out to be good for you - if you choose the right mouse. Specifically, those genetically engineered to produce human proteins in their urine, such as the ones produced by a team at the US Department of Agriculture and the New York University Medical School.
We already have transgenic sheep that produce useful human proteins in their milk, but the advantage of animals which generate useful chemicals in their urine is that both males and females could secrete it virtually from birth.
The work is reported in the January issue of Nature Biotechnology; the mice were given a gene to produce human growth hormone. If the idea were to be used commercially, scientists would plant the gene for a particular protein into bigger animals, such as cattle.
Art Piece taken off website amid 'severe security alert'
Maisie Williams single-handedly rises to the challengeTV
Academy criticised after no non-white actors nominated
tvAn expose of hooliganism masquerading as an ideological battle
artLee Hadwin can't draw when he's awake, but by night he's an artist
Arts & Ents blogs
- 1 Asteroid narrowly scrapes past Earth: how to watch the closest space rock for decades as it flies by
- 2 Saudi preacher who 'raped and tortured' his five -year-old daughter to death is released after paying 'blood money'
- 3 The enemy within: People who hear voices in their heads are being encouraged to talk back
- 4 British grandmother Lindsay Sandiford faces execution by firing squad in Indonesia
- 5 Watch Richard Dawkins read his own hatemail: 'I hope you do get sodomised by satanic monkeys in hell'
'We would evict Queen from Buckingham Palace and allocate her council house,' say Greens
French court convicts three over homophobic tweets, in case hailed as a 'significant victory' by LGBT rights campaigners
Greece elections: Syriza and EU on collision course after election win for left-wing party
British Muslim school children suffering a backlash of abuse following Paris attacks
Islamic history is full of free thinkers - but recent attempts to suppress critical thought are verging on the absurd
30,000 reasons why the rhetoric on immigrants claiming benefits can stop now