摘要:
Lymphotoxin (LT) mutein (genetically-altered LT) is disclosed that has the following amino acid sequence, or a portion of an active portion of said protein, where 10 to 21 amino acids of LT being deleted from N-terminus and which has Pro or Phe at the N-terminus: ##STR1## Wherein R.sub.1 is Pro or Phe, R.sub.2 is a peptide chain represented by the following sequence:Ala-Gln-Thr-Ala-Arg-Gln-His-Pro-Lys-Met-His-Leu,or a portion thereof and n is 0 or 1.The LT mutein can be recovered in a higher yield and purified more efficiently under mild conditions which does not harm the LT's biological activity, than the whole LT.
摘要:
An animal cell line transformed with an expression vector for an animal cell, the expression vector which contains a DNA segment comprising:(a) a DNA sequence coding for a signal peptide of an animal cell-derived protein,(b) a second DNA sequence coding for a different protein from the signal protein joined downstream of said signal peptide encoding DNA sequence without causing any reading frame shift, and(c) a promoter DNA sequence capable of functioning in an animal cell, wherein the promoter sequence is positioned upstream of the signal peptide encoding DNA sequence, can produce glycosylated proteins advantageously as secretable proteins.
摘要:
A reflection-type liquid crystal display device includes a first substrate including a plurality of pixel electrodes arranged in a matrix and switching devices for driving the pixel electrodes. A second substrate includes a counter electrode, and a liquid crystal layer is interposed between the first substrate and the second substrate. The pixel electrodes each include a lower electrode layer and an upper electrode layer. The upper electrode layer is formed of either silver or a silver alloy and is reflective.
摘要:
When an optical waveguide is formed by focused femtosecond laser pulses in a pure silica glass to induce a refractive index increase region, a pulse width of femtosecond laser pulses are changed, a peak power of femtosecond laser pulses at the focal point is changed, or both the pulse width and the peak power are changed simultaneously. Under conditions where a pulse width of the femtosecond laser pulses is in a range of 210 to 420 fs and a peak power at the focal point is not greater than 8.7×1011 W/cm2, an optical waveguide having a mode field of 10 to 14 μm such that an aspect ratio is 1 (one) can be obtained. By doing this, it is possible to control a mode field diameter of an optical waveguide and an aspect ratio of the mode field diameter.
摘要翻译:当通过在纯二氧化硅玻璃中的聚焦飞秒激光脉冲形成光波导以引起折射率增加区域时,飞秒激光脉冲的脉冲宽度改变,焦点处的飞秒激光脉冲的峰值功率改变,或两者都改变 脉冲宽度和峰值功率同时变化。 在飞秒激光脉冲的脉冲宽度在210至420fs的范围内且焦点处的峰值功率不大于8.7x10 11 / cm 2的条件下, / SUP>,具有10〜14μm的模场的光波导,使得可以获得纵横比为1(1)。 通过这样做,可以控制光波导的模场直径和模场直径的纵横比。