Let F1, . . . ,Fr ⊂ ([n] k ) be r-cross t-intersecting, that is, |F1 ∩ ·· · ∩Fr| ≥ t holds for all F1 ∈ F1, . . . ,Fr ∈ Fr. We prove that for every p,μ ∈ (0,1) there exists r0 such that for all r > r0, all t with 1 ≤ t < (1/p− μ)r−1/(1− p)−1, there exist n0 and ε so that if n > n0 and |k/n− p|< ε , then |F1| · · · |Fr| ≤ (n−t k−t )r .

F1-ATPase (F1) is a multisubunit water-soluble domain of FoF1- ATP synthase and is a rotary enzyme by itself. Earlier genetic studies using yeast suggested that two factors, Atp11p and Atp12p, contribute to F1 assembly. Here, we show that their mammalian counterparts, AF1 and AF2, are essential and sufficient for efficient production of recombinant bovine mitochondrial F1 in Escherichia coli ce...

The application of our glueball-qq̄ filter to the centrally produced KK̄π system shows that the f1(1285) and f1(1420) have the same behaviour; namely consistent with the f1(1420) being the partner to the f1(1285) in the P1 nonet of axial mesons. We determine a flavour singlet-octet mixing angle of ∼ 50 for this nonet and highlight that the existence of the supposed f1(1510) needs confirmation. e-...

The rate of ATP hydrolysis under multi- and unisite conditions was determined in the native F1-inhibitor protein complex of bovine heart mitochondria (Adolfsen, R., MacClung, J.A., and Moudrianakis, E.N. (1975) Biochemistry 14, 1727-1735). Aurovertin was used to distinguish between hydrolytic activity catalyzed by the F1-ATPase or the F1-inhibitor protein (F1.I) complex. We found that incubatio...

F1-ATPase (F1) is a reversible ATP-driven rotary motor protein. When its rotary shaft is reversely rotated, F1 produces ATP against the chemical potential of ATP hydrolysis, suggesting that F1 modulates the rate constants and equilibriums of catalytic reaction steps depending on the rotary angle of the shaft. Although the chemomechanical coupling scheme of F1 has been determined, it is unclear ...

the effect of genotype, sex and hatch on carcass traits and physical characteristics of eggs was investigated in the japanese quail. two strains of japanese quails including the white (p1) and wild (p2) genotypes were chosen as the parental generation and crossed reciprocally (10 single-pair mating) to create the f1 progeny. the f1 birds (27 males and 81 females) were mated randomly to produce ...

Unprimed (CBA X C57BL/6)F1 lymph node T cells were transferred with sheep erythrocytes (SRC) into heavily irradiated F1 or parental strain mice and recovered from thoracic duct lymph or spleens of the recipients 5 days later. To study their helper function, the harvested F1 T cells were transferred with antigen into irradiated F1 mice plus B cells from either the two parental strains or from F1...

Plague is one of the most dangerous infections in humans caused by Yersinia pestis, a Gram-negative bacterium. Despite of an overwhelming research success, no ideal vaccine against plague is available yet. It is well established that F1/LcrV based vaccine requires a strong cellular immune response for complete protection against plague. In our earlier study, we demonstrated that HSP70(II) of My...

Identifying the genes required for environmental sex determination is important for understanding the evolution of diverse sex determination mechanisms in animals. Orthologs of Drosophila orphan receptor Fushi tarazu factor-1 (Ftz-F1) are known to function in genetic sex determination. In contrast, their roles in environmental sex determination remain unknown. In this study, we have cloned and ...