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    • 61. 发明授权
    • Computer based system and method for determining and displaying possible
chemical structures for converting double- or multiple-chain
polypeptides to single-chain polypeptides
    • 用于确定和显示将双链或多链多肽转化为单链多肽的可能的化学结构的基于计算机的系统和方法
    • US4881175A
    • 1989-11-14
    • US204940
    • 1988-06-09
    • Robert C. Ladner
    • Robert C. Ladner
    • C07K1/00G06F17/50
    • C07K1/00G06F19/16G06F19/22Y10S706/932
    • A computer based system and method determines and displays possible chemical structures for converting two naturally aggregated but chemically separated polypeptide chains into a single polypeptide chain which will fold into a three dimensional structure very similar to the original structure made of the two polypeptide chains. A data base contains a large number of amino acid sequences for which the three dimensional structure is known. After plausible sites have been selected, this data base is examined to find which amino acid sequences (linkers) can bridge the gap between the plausible sites to create a plausible one-polypeptide structure. The testing of each possible linker proceeds in three steps. First, the span (a scalar quantity) of the candidate is compared to the span of the gap. If the span is close enough, step two is done which involves aligning the first peptides of the candidate with the initial peptide of the gap. The three dimensional vector from tail to head of the candidate is compared to the three dimensional vector from tail to head of the gap. If there is a sufficient match between the two vectors, step three is done, which involves fitting the termini of the candidate (using, for example, a least squares procedure) to the termini of the gap. If these two termini fit well enough, the candidate is enrolled for a ranking process.
    • 基于计算机的系统和方法确定并显示用于将两个天然聚集但化学分离的多肽链转化成单个多肽链的可能的化学结构,其将折叠成与由两条多肽链构成的原始结构非常相似的三维结构。 数据库包含大量已知三维结构的氨基酸序列。 在选择合适的位点后,检查该数据库以找出哪些氨基酸序列(接头)可以弥合可信位点之间的间隙,以产生合理的单多肽结构。 每个可能的接头的测试分三步进行。 首先,将候选者的跨度(标量)与间隙的跨度进行比较。 如果跨度足够接近,则进行第二步,其包括将候选物的第一个肽与间隙的初始肽对齐。 从候选人的尾部到头部的三维向量与从间隙的尾部到头部的三维向量进行比较。 如果两个向量之间存在足够的匹配,则完成步骤3,这涉及将候选者的终端(例如使用最小二乘法)适配到间隙的终点。 如果这两个终端足够好,候选人将被注册进行排名过程。
    • 62. 发明授权
    • Computer based system and method for determining and displaying possible
chemical structures for converting double- or multiple-chain
polypeptides to single-chain polypeptides
    • 用于确定和显示将双链或多链多肽转化为单链多肽的可能的化学结构的基于计算机的系统和方法
    • US4704692A
    • 1987-11-03
    • US902970
    • 1986-09-02
    • Robert C. Ladner
    • Robert C. Ladner
    • C07K1/00G06F17/50G06F15/46G01N33/00
    • C07K1/00G06F19/16G06F19/22Y10S706/906
    • A computer based system and method determines, and displays possible chemical structures for converting two naturally aggregated but chemically separated polypeptide chains into a single polypeptide chain which will fold into a three dimensional structure very similar to the original structure made of the two polypeptide chains. A data base contains a large number of amino acid sequences for which the three dimensional structure is known. After plausible sites have been selected, this data base is examined to find which amino acid sequences (linkers) can bridge the gap between the plausible sites to create a plausible one-polypeptide structure. The testing of each possible linker proceeds in three steps. First, the span (a scaler quantity) of the candidate is compared to the span of the gap. If the span is close enough, step two is done which involves aligning the first peptides of the candidate with the initial peptide of the gap. The three dimensional vector from tail to head of the candidate is compared to the three dimensional vector from tail to head of the gap. If there is a sufficient match between the two vectors, step three is done, which involves fitting the termini of the candidate (using, for example, at least squares procedure) to the termini of the gap. If these two termini fit well enough, the candidate is enrolled for a ranking process.
    • 基于计算机的系统和方法确定并显示用于将两个天然聚集但化学分离的多肽链转化成单个多肽链的可能化学结构,其将折叠成与由两条多肽链构成的原始结构非常相似的三维结构。 数据库包含大量已知三维结构的氨基酸序列。 在选择合适的位点后,检查该数据库以找出哪些氨基酸序列(接头)可以弥合可信位点之间的间隙,以产生合理的单多肽结构。 每个可能的接头的测试分三步进行。 首先,将候选者的跨度(缩放器数量)与间隙的跨度进行比较。 如果跨度足够接近,则进行第二步,其包括将候选物的第一个肽与间隙的初始肽对齐。 从候选人的尾部到头部的三维向量与从间隙的尾部到头部的三维向量进行比较。 如果两个向量之间存在足够的匹配,则完成步骤3,其涉及将候选者的终端(例如,至少使用平方子程序)拟合到间隙的末尾。 如果这两个终端足够好,候选人将被注册进行排名过程。