cwbe coordinatez:
101
792011
2552429
5425512
6761628

ABSOLUT
KYBERIA
permissions
you: r,
system: public
net: yes

neurons

stats|by_visit|by_K
source
tiamat
commanders
polls

total descendants::0
total children::0
show[ 2 | 3] flat


zakazdym sa v diskusii o origin of life (ool) objavi troll a spolu s nim cele to panoptikum folkbiologov co si kladu sugestivne a chybne artikulovane otazky a este sa aj frustruju tym, ze na ne nevedia odpovedat.

a aj ked sa vam dostane odpovede, meliete si ako certifikovani diskusni masochisti o par mesiacov znova len to svoje v dlhociznych jednoliatych textoch zachytavajucich momentalne pohnutia vasich mysli ako na rolku toaletneho papiera.

nejestvuje nic ako "ziva' a "neziva" hmota, to su pojmy z 19 storocia spred wohlerovej anorganickej syntezy mocoviny kedy sa ludia trapili nad vis vitalis. hmota je stale len hmota. "zive" a "nezive" ma omnoho prozaickejsie rozdiely, nez ake mu pripisuju laici. nie je v tom ziadna carovna sila, cista chemia komplementarnych vlakien a nepresnosti parovania wobble baz:

en trifonov s kolegami vcelku nedavno identifikoval dvomi roznymi sposobmi prve samoreplikujuce sa kratke oliga, ktore sa replikuju s variacimi - co je exaktna definicia "zivych" replikatorov - replikacia s variaciou. zhodou okolnosti ide o vysokokonzervovane sekvencie, ktore su dnes sucastou ATP viazucich proteinov, takze to vyzera tak, ze prve replikatori kodovali sami sebe kratucky protein co im bol schopny utilizovat energiu.

- The origin of the genetic code and of the earliest oligopeptides. http://www.sciencedirect.com/s... (digest je spraveny tu - http://ogremk5.wordpress.com/2... - velmi elegantny pribeh)

- Theory of Early Molecular Evolution: Predictions and Confirmations. - http://www.springerlink.com/co...

ale najma fig.4 v tej prvej publikacii kde je nazorne ukazane na evolucii kodonov prvych replikatorov, ze v momente kedy sa zo samoreplikacie bez variacie stala vdaka chybovosti a nepresnosti parovania komplementarnych vlakien samoreplikacia s variaciou - tento replikator sa stal "zivym" - splnal definiciu "zivota" - hoci islo iba o obycajny oligonukleotid.

no a pred par mesiacmi vysla praca di maurovi o samoreplikujucich sa rna s variaciami kde sa inspiroval prave trifonovovym poznatkom o tom, ze z millerovych syntez vysli aminokyseliny ako prve tie, co maju mutaciu kodonu z glycinu (predpokladany prvy kodon) :

"a series of chemical steps is described to be considered as the life-nonlife transition, if one adheres to the minimalistic definition: life is self-reproduction with variations. The fully artificial RNA system chosen for the exploration corresponds sequence-wise to the reconstructed initial triplet repeats, presumably corresponding to the earliest protein-coding molecules. The demonstrated occurrence of the mismatches (variations) in otherwise complementary syntheses ("self-reproduction"), in this RNA system, opens an experimental and conceptual perspective to explore the origin of life (and its definition), on the apparent edge of the origin."

Genomics Proteomics Bioinformatics. 2011 Apr;9(1-2):7-14. On the observable transition to living matter (ach ten nazov;) Pino S, Trifonov EN, Di Mauro E. http://www.sciencedirect.com/s...

---
a este k tomu exotovi co niekde vyssie v diskusii chce dokazy ze vedomie je zavisle na hmote a nejde o nejaku transcendentalnu energiu - zober si skalpel a vyrez si obidva frontalne laloky ako na tom budes s manifestaciou vedomia a ci sa ti ludske vlastnosti sublimuju do nejakej energie.
http://www.sciencedirect.com/science/article/pii/S0923250809000576
http://ogremk5.wordpress.com/2011/03/18/origins-of-life-%E2%80%93-amino-acids-and-the-triplet-codon/
http://www.springerlink.com/content/x7735rtq5782683h/?MUD=MP
http://www.sciencedirect.com/science/article/pii/S1672022911600028