The ciliate Tetrahymena thermophila is a model organism for molecular and cellular biology. Like other ciliates, this species has separate germline and soma functions that are embodied by distinct nuclei within a single cell. The germline-like micronucleus (MIC) has its genome held in reserve for sexual reproduction. The soma-like macronucleus (MAC), which possesses a genome processed from that...

The nuclear pore complex (NPC), a gateway for nucleocytoplasmic trafficking, is composed of about 30 different proteins called nucleoporins. It remains unknown whether the NPCs within a species are homogeneous or vary depending on the cell type, or physiological condition. Here, we present evidence for compositionally distinct NPCs that form within a single cell in a binucleated ciliate. In Tet...

Soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. Organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure.So, this research has been done for achieving this purpose. This area is arounding sa...

Mycobacterium avium-intracellulare complex (MAC) causes an intractable intracellular infection that presents as chronic pulmonary disease. Currently, therapy consists of ethambutol and macrolides and takes several years to complete. The neuroleptic phenothiazine thioridazine kills mycobacteria by inhibiting the electron transport chain. In several experiments with bacterial populations of up to...

Este estudo objetivou avaliar a influência que os atributos físicos do solo podem exercer sobre entomofauna edáfica, considerando uma área de Pousio e outra Mata Nativa, coletando-se amostras nas profundidades 0 – 20 cm 40 cm, totalizando 49 por profundidade, 98 área, avaliando-se: densidade (DS), macroporosidade (MAC), microporosidade (MIC), porosidade total (PT), umidade gravimétrica (UG) vol...

Ubc9p is the sole E2-conjugating enzyme for SUMOylation, and its proper function is required for regulating key nuclear events such as transcription, DNA repair, and mitosis. In Tetrahymena thermophila, the genome is separated into a diploid germ line micronucleus (MIC) that divides by mitosis and a polyploid somatic macronucleus (MAC) that divides amitotically. This unusual nuclear organizatio...

Fig. AI.l The stress dependence of the activation area for a dislocation segment overcoming a simple discrete obstacle. ABSTRACT. This chapte~ p~esents the foundations in continuum mechanics and i~~eve~sible the~odynamics fo~ constitutive ~e­ lations gove~ing plasticity. Special emphasis is given to the connection of mac~oscopic fo~lations to defo~ation mechanisms as ope~ative on the mic~scale....

The genetics of the ciliate Tetrahymena thermophila are richer than for most other eukaryotic cells, because Tetrahymena possesses two genomes: a germline (micronuclear) genome that follows a Mendelian model of genetic transmission and a somatic (macronuclear) genome, derived from the micronuclear genome by fragmentation, which follows a different genetic transmission model called phenotypic as...