Biotin-labeled oligonucleotides with extraordinarily long tethering arms.

We describe synthesis of four novel biotin phosphoramidites with tethering arms ranging from 20 to 74 atoms in length. One of these phosphoramidites is a uridine derivative with a biotin moiety attached through the 2'-position. The biotin phosphoramidites were synthetized based on robust and efficient methoxyoxalamido (MOX) and succinimido (SUC) precursor strategies from MOX/SUC precursors containing a secondary hydroxyl.

Novel biotin phosphoramidites with super-long tethering arms.

A number of novel biotin phosphoramidites, possessing exceptionally long and uncharged tethering arms, were synthesized from methoxyoxalamido (MOX) and succinimido (SUC) precursors. Included among these monomers is a uridine derivative with the biotin moiety attached through the 2'-position. Some of these phosphoramidites were used to make 5'-biotinylated primers, which were applied in direct sequencing of genomic DNA and capture of Sanger fragment pools.

The complete genome of hyperthermophile Methanopyrus kandleri AV19 and monophyly of archaeal methanogens.

We have determined the complete 1,694,969-nt sequence of the GC-rich genome of Methanopyrus kandleri by using a whole direct genome sequencing approach. This approach is based on unlinking of genomic DNA with the ThermoFidelase version of M. kandleri topoisomerase V and cycle sequencing directed by 2'-modified oligonucleotides (Fimers).

[Distal shunting in critical ischemia of the lower extremities in patients younger and older than 80].

Under analysis are the factors of operative risk and results of operative interventions on distal segments of the arteries in elderly and senile patients with critical ischemia of lower extremities against the background of generalized atherosclerosis. Seventy-eight bypasses were fulfilled: ileo-femoral, femoro-popliteal, femoro-tibial, femoro-fibular. Pain at rest and gangrene of the foot and toes tissue were considered to he indications to bypasses.

[Medico-genetic consultation and clinico-social prognosis of epileptics].

The results of the clinical-genetic examinations of 291 families of the general population are discussed. The authors present tables of empirical risk of recurrent epilepsy and lesser epileptic manifestations (epileptoid psychopathy, childhood convulsions) among the relatives of probands with regard to the degree of kinship, the familial (above all parenthood) identical and non-identical aggravated heridity, clinical polymorphism of the disease and populational characteristics. The questions of the clinical and social prognosis of epilepsy in specific clinical-genetic familial situations are also outlined.