Sensor Design Using Self-Replicating Deoxyribozyme
نویسندگان
چکیده
요 약 최근 DNA와 같은 생체 분자를 이용한 정보 처리 기술에 대한 연구가 활발하게 이루어지고 있다. 이러 한 기술의 발전은 분자 수준에서의 생화학적 정보 처리의 가능성을 보여주며, 진단 목적의 유전자 발현 정보 처리와 같은 생물학 목적의 문제 해결을 위한 새로운 방법으로 떠오르고 있다. 생체 분자 정보 처 리 기술은 기존의 전자식 컴퓨터와 달리 생체 분자로 표현된 정보를 분자 수준에서 직접 처리함으로써 정보 변환 과정에서의 손실을 줄이고 효과적인 문제 해결을 가능하게 한다. Deoxyribozyme은 DNA이면 서도 마치 효소와 같은 특성을 가지며 특정 서열의 DNA나 RNA 분자를 자르거나 이어 붙이는 기능을 가 지고 있는 DNA 분자를 말한다. 본 논문에서는 deoxyribozyme을 이용하여 분자 정보 처리의 기본 소자 역할이 가능한 자가복제 deoxyribozyme의 개념적 모델을 제안하고, 이를 바탕으로 목표 분자를 검출하 는데 사용 가능한 분자 센서를 디자인한다. 그리고 시뮬레이션을 통해 자가복제 deoxyribozyme의 복제 반응과 센서로서의 기능을 보여준다.
منابع مشابه
An example of design optimization for high evolvability: string rewriting grammar.
As an example of the optimization of an evolutionary system design, a string rewriting system is studied. A set of rewriting rules that defines the growth of a string is experimentarily optimized in terms of maximizing the 'replicative capacity', that is the occurrence ratio of self-replicating strings. It is shown that the most optimized rule set allows many strings to self-replicate by using ...
متن کاملA deoxyribozyme that harnesses light to repair thymine dimers in DNA.
In vitro selection was used to investigate whether nucleic acid enzymes are capable of catalyzing photochemical reactions. The reaction chosen was photoreactivation of thymine cyclobutane dimers in DNA by using serotonin as cofactor and light of wavelengths longer than the absorption spectrum of DNA. Curiously, the dominant single-stranded DNA sequence selected, UV1A, was found to repair its in...
متن کاملAn Autonomous Self-Replicating Robotic System
The concept of self-replicating machines was introduced more than fifty years ago by John von Neumann. However, to our knowledge a fully autonomous selfreplicating robot has not been implemented until now. Here we describe a fully autonomous prototype that demonstrates robotic self replication. This work builds on our previous results in remote-controlled robotic replication and semi-autonomous...
متن کاملCatalytic molecular beacons.
We have constructed catalytic molecular beacons from a hammerhead-type deoxyribozyme by a modular design. The deoxyribozyme was engineered to contain a molecular beacon stem-loop module that, when closed, inhibits the deoxyribozyme module and is complementary to a target oligonucleotide. Binding of target oligonucleotides opens the beacon stem-loop and allosterically activates the deoxyribozyme...
متن کاملCharacterization of a catalytically efficient acidic RNA-cleaving deoxyribozyme
We previously demonstrated--through the isolation of RNA-cleaving deoxyribozymes by in vitro selection that are catalytically active in highly acidic solutions--that DNA, despite its chemical simplicity, could perform catalysis under challenging chemical conditions [Liu,Z., Mei,S.H., Brennan,J.D. and Li,Y. (2003) J. Am. Chem. Soc. 125, 7539-7545]. One remarkable DNA molecule therefrom is pH4DZ1...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008