Fujitsu Corporation

Fumiko Matsuzawa

Seiichi Aikawa

Mayumi Tomikawa

Shinichi Nishina

In the analysis of one-dimensional sequences of molecules, the longest common subsequence, the number of elements constituting the subsequence, and appearance positions of the subsequence are determined by a novel and simple method, and processes, such as homology decision, homology search, motif search and alignment are performed based on the results. In the analysis of these-dimensional structures of molecules, limiting conditions, such as geometrical arrangements of elements, are introduced to realize the determination of correspondence of three-dimensional structures at high speeds, and whereby it is made possible to achieve such processing as superposed display of three-dimensional structure of molecules, retrieval of three-dimensional structure, and evaluation of functions. Moreover, the molecules are divided into secondary structure that are then related to each other based on spatial similarity among the secondary structures. Furthermore, similarity among the molecules is decided based on a relationship of spatial positions of the corresponding secondary structures.

Method and apparatus for extracting and evaluating mutually similar portions in one-dimensional sequences in molecules and/or three-dimensional structures of molecules

The invention provides an apparatus for extracting a common structure from two three-dimensional structures each formed from a set of sequenced points. The apparatus is constructed so as to extract one of common portions with which the common portion length of the two point sets superposed with each other exhibits a greatest length and the cumulative sum of distances between matched points of the two point sets superposed with each other exhibits a lowest value as an optimum common structure. The common structure extraction apparatus is suitably used to analyze a molecular structure to make clear a mechanism for manifestation of a function of a substance in order to investigate a property of a novel substance such as a protein or artificially produce a novel substance in the fields of physics, chemistry and so forth.

Common structure extraction apparatus

A method and a device for displaying a structure of a compound provide a graphic display and a related character display, affording improved operational characteristics. Stereo structural data obtained from a database is stored in a display buffer provided with a designated area for setting a display mode, thereby displaying graphically a stereo structure of said compound corresponding to the display mode set in said designated area and displaying characters representing said structure of said compound corresponding to said display mode set in said designated area.

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Kawasaki, Japan

Fumiko Matsuzawa