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Device for predicting thermostabilized mutants of membrane proteins, method for predicting thermostabilized mutants, and program

A technology for predicting devices and proteins, applied in proteomics, peptide preparation methods, chemical instruments and methods, etc., can solve the problems of difficult mass production, difficult crystallization, low thermal stability, etc., and achieve the best structure. the effect of

Active Publication Date: 2019-12-10
JAPAN SCI & TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As mentioned above, the (2) problem of difficult crystallization of GPCRs can be overcome by using T4L fusion or antibodies. However, (1) the problem of low thermal stability and difficulty in mass production has not been fully resolved, and more than 90% of GPCRs are still not mass produced

Method used

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  • Device for predicting thermostabilized mutants of membrane proteins, method for predicting thermostabilized mutants, and program
  • Device for predicting thermostabilized mutants of membrane proteins, method for predicting thermostabilized mutants, and program
  • Device for predicting thermostabilized mutants of membrane proteins, method for predicting thermostabilized mutants, and program

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Embodiment

[0244] In addition, refer to figure 1 ,as well as Figure 33 to Figure 47 , an example of the thermostable mutant prediction device 100 according to this embodiment will be described. Figure 33 It is a flowchart showing an example of processing executed by the thermostable mutant prediction device 100 .

[0245] Such as Figure 33 As shown, first, the mutation introducing unit 102a generates the amino acid sequence of the mutant Mt by introducing amino acid mutations into the amino acid sequence of the membrane protein wild-type Wt stored in the sequence file 106b (step SB-1). For example, the mutation introducing unit 102a may generate a mutant Mt into which an amino acid mutation such as deletion of one amino acid, substitution of one amino acid, or addition of one amino acid has been introduced.

[0246] Thereafter, the calculation unit 102b calculates, for the membrane protein wild-type Wt and each mutant Mt, the change in entropy of solvation from the formation of the...

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Abstract

The present invention provides a thermostable mutant prediction device, which predicts the three-dimensional structure of a one-residue mutant obtained by replacing each amino acid residue of a membrane protein with all amino acids, and calculates the membrane penetration site from the first level The solvation entropy change from structure formation to tertiary structure formation or from secondary structure formation to tertiary structure formation is based on the difference between the solvation entropy change of the membrane protein and the solvation entropy change of the amino acid mutant, selected Candidates for thermostabilizing amino acid mutants.

Description

technical field [0001] The present invention relates to a thermostabilizing mutant predicting device, a thermostabilizing mutant predicting method, and a program of a membrane protein. Background technique [0002] Membrane proteins account for 30% of all proteins encoded by the genome, and play an important role in cellular functions such as signal transmission, material transport, and energy generation and conversion in living organisms. In addition, at the same time, since about 60% of commercially available drugs act on membrane proteins, they are also important targets in the creation of new drugs. In particular, G protein-coupled receptors (GPCRs), which are receptors for hormones and neurotransmitters, form about 800 types of family members, and about 280 types are estimated to be targets for new drug creation. [0003] In recent years, it has been found that drug molecular design based on the three-dimensional structure of a protein serving as a drug target (SBDD) i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16B20/50G16B30/10C07K1/107G16B15/30C12M1/34C12P21/00C07K1/00C12M1/00G16B15/20G16B20/00
CPCC07K1/107C12M1/00C12M1/34G16B20/00G16B15/00G16B15/20G16B20/50
Inventor 村田武士木下正弘安田贤司高椋勇树水谷健二铃木七绪梶原佑太
Owner JAPAN SCI & TECH CORP