A virulent strain of Mycoplasma pneumoniae was metabolically labeled with [3H]palmitate and studied for binding to glycolipids and to WiDr human colon adenocarcinoma cells. The organism binds strongly to sulfatide and other sulfated glycolipids, such as seminolipid and lactosylsulfatide which all contain terminal Gal(3SO4) beta 1-residues and weakly to some neolactoseries neutral glycolipids. M...

The objective of this study was to investigate the insulin incorporation and release properties of poly(methacrylic acid-g-ethylene glycol) P(MAA-g-EG) microparticles as a function of copolymer composition. These microparticles exhibited unique pH-responsive characteristics in which interpolymer complexes were formed in acidic media and dissociated in neutral/basic environments. The micropartic...

Various amounts of ATP were added to a complex of F-actin with subfragment-1 of HMM (acto-S-1) in the presence of pyruvate kinase [EC 2.7.1.40] and PEP as an ATP regenerating system, and S-I was separated by ultracentrifugation into two fractions, i.e., S-1 bound to F-actin (precipitate) and S-1 dissociated from F-actin (supernatant). S-1 fractions with Pi burst sizes from 0.2 to 0.8 mol/mol we...

For a wide class of pairs of unbounded selfadjoint operators (A,B) with bounded commutator and with operator (1+A2+B2)−1 being compact we construct aK-theoretical integer invariant ω(A,B), which is continuous, is equal to zero for commuting operators and is equal to one for the pair (x,−i d/dx). Such invariants in the case of bounded operators were constructed by T. Loring [1, 3] for matrices r...

Borosilicate BK7 glasses doped with different amounts of CeO2 (0.5,1,1.5%) were prepared by the convenient melting process in this work. DTA analysis proved that 0.5-1% CeO2 has a network modifier role and then up to 1.5% it shows network former role.For structural studies, FT-IR and Raman spectroscopy were carried out. Fermi energy level, direct/ indirect optical band gap and Urbach energy wer...

The HOX 2.2 homeobox gene is expressed in human hematopoietic cell lines with erythroid features (W.-F. Shen, et al, Proc. Natl. Acad. Sci. 86, 8536-8540, 1989). Both human and murine Hox 2.2 genes contain a single 1 kb intron which interrupts the sequence encoding the proposed homeobox protein. Four human erythroleukemia cell lines express the spliced, homeobox-coding transcript as the major f...