Ter region

Experience indicates that use of structured packings has capacity/ efficiency disadvantages in the higher-pressure (higher-flow-parame-ter) region. 

Replication ends when the replication forks meet on the other side of the circular chromosome at the termination site, the ter (t) region. The ter region is composed of a pair of 20-bp inverted repeat ter sequences separated by a 20-bp segment. Each ter sequence prevents further progression of one of the replication forks when a 36-kD ter binding protein (TBP) is bound. How the two daughter DNA molecules separate is not understood, although a type II topoisomerase is believed to be involved. 

These two vibrations are clearly visible at 3270 and 3380 cm in the IR spectrum of butylamine shown in Figure 22 la Secondary amines such as diethylamme shown m Figure 22 7i> exhibit only one peak which is due to N—H stretching at 3280 cm Ter tiary amines of course are transparent m this region because they have no N—H bonds... 

Figure 2. Schematic of HSFl map depicting the DNA binding region at the amino terminus and the regulatory regions for protein-protein interactions in the COOH-ter-...

Grubb RL, Jr., Phelps ME, Ter-Pogossian MM. Regional cerebral blood volume in humans. X-ray fluorescence studies. Arch Neurol 1973 28 38-44. 

The transmembrane domain in the RPTK is a hydrophobic segment of 22-26 amino acids inserted in the cell membrane. It is flanked by a proline-rich region in the N-terminus and a cluster of basic amino acids in the C-ter-minus. This combination of structures secures the transmembrane domain within the lipid bilayer. There is a low degree of homology in the transmembrane domain, even between two closely related RPTKs, suggesting that the primary sequence contains little information for signal transduction. 

Figure 4.12 Secondary neutral and ion mass spectra of a 1 1 Fe-Ni alloy in the mass regions of monomers lop) and dimers (bottom). The dimer distribution indicates that iron and nickel are atomically mixed, as expected in an Fe-Ni alloy. Note the higher sensitivity of SIMS for iron and the manganese impurity (from ter Veen [36]).

Ter-Pogossian MM, Klein MS, Markham J, Roberts R, Sobel BE. Regional assessment of myocardial metabolic integrity in vivo by positron-emission tomography with 1 IC-labeled palmitate. Circulation 1980 61 242-255... 

Sobel BE, Geltman EM, Tiefenbrunn AJ, Jaffe AS, Spadaro JJ, Jr., Ter-Pogossian MM et al. Improvement of regional myocardial metabolism after coronary thrombolysis induced with tissue-type plasminogen activator or streptokinase. Circulation 1984 69 983-990... 

Termination Eventually, the two replication forks of the circular E. coli chromosome meet at a terminus region containing multiple copies of a 20 bp sequence called Ter (for terminus) (Fig. 25-17a). The Ter sequences are arranged on the chromosome to create a sort of trap that a replication fork can enter but cannot leave. The Ter sequences function as binding sites for a protein called Tus (terminus utilization substance). The Tus-Ter complex can arrest a replication fork from only one direction. Only one Tus-Ter complex functions per replication cycle—the complex first encountered by either... 

Termination factor Some regions on the DNA that signal the ter mination of transcription are recognized by the RNA polymerase itself. Others are recognized by specific termination factors, an example of which is the rho (p) factor of E. ccii. 

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