Communication system
    3.
    发明授权
    Communication system 失效
    通讯系统

    公开(公告)号:US4949083A

    公开(公告)日:1990-08-14

    申请号:US195624

    申请日:1988-05-18

    IPC分类号: H04L12/417

    CPC分类号: H04L12/417

    摘要: A communication system includes a plurality of separate transmission units. A common signal line connects the units. A token is transferred from a first of the units to a second of the units during one sequence. The token is a right to output data to the common signal line. When the token is rejected by the second unit, the token is retransferred from the first unit at maximum a predetermined number of times during that sequence to the second unit. When the retransferred token is rejected by the second unit, the token may be transferred from the first unit to a third of the units during that sequence. In a next sequence, said predetermined maximum number of times said token is retransmitted to said second unit is then reduced.

    摘要翻译: 通信系统包括多个单独的传输单元。 公共信号线连接这些单元。 令牌在一个序列中从第一个单元传送到第二个单元。 令牌是将数据输出到公共信号线的权利。 当令牌被第二单元拒绝时,令牌在该序列期间以最大预定次数从第一单元重传到第二单元。 当转发令牌被第二单元拒绝时,令牌可以在该序列期间从第一单元传送到三分之一的单元。 在下一个序列中,然后减少所述令牌被重传到所述第二单元的所述预定的最大次数。

    Amino-terminal deblocking enzyme
    4.
    发明授权
    Amino-terminal deblocking enzyme 失效
    氨基末端解封酶

    公开(公告)号:US06194190B1

    公开(公告)日:2001-02-27

    申请号:US09202832

    申请日:1998-12-21

    IPC分类号: C12N950

    CPC分类号: C12N9/48

    摘要: To provide an amino terminal protecting group-releasing enzyme characterized in that the enzyme possesses an activity for releasing a protecting group by acting on a peptide of which amino terminal is blocked by the protecting group, and exhibits the activity for two or more protecting groups, or a functional equivalent thereof; a DNA encoding the same; a method for producing the enzyme; a method for removing amino terminal protecting group including the step of subjecting to a reaction with the enzyme to release amino terminal protecting group; and a method for analyzing an amino acid sequence. The above enzyme is useful in the analysis of an amino acid sequence of peptides, particularly proteins and peptides, of which amino terminal is blocked by unknown protecting groups.

    摘要翻译: 提供氨基末端保护基释放酶,其特征在于该酶具有通过作用于氨基末端被保护基阻断的肽而释放保护基的活性,并表现出两个或更多个保护基的活性, 或其功能等同物; 编码该DNA的DNA; 一种生产该酶的方法; 一种除去氨基末端保护基的方法,包括与酶反应释放氨基末端保护基的步骤; 以及分析氨基酸序列的方法。 上述酶可用于分析肽,特别是蛋白质和肽的氨基酸序列,其氨基末端被未知保护基团阻断。