Algorithms for the Prediction of Rna Secondary Structures

نویسنده

  • M. Elloumi
چکیده

В данной работе задача прогнозирования вторичной структуры макромолекул ДНК решается с помощью “энергетических расчетов”. Излагаются алгоритм динамического программирования для вычисления свободных энергий стабильных вторичных структур и отслеживающий алгоритм для прогнозирования этих структур. Свободные энергии стабильных вторичных структур рассчитываются с использованием нового подхода, получившего название “m-многоконтурный подход” (m-MA), m > 1. Вычисление выполняется за время, пропорциональное n4, и требует объема памяти, пропорционального n2. Прогонозирование стабильных вторичных структур выполняется за время, пропорциональное n3 ∗ log3(n). В сравнении с другими подходами алгоритм (m-MA) позволяет улучшить оценку минимальных энергетических вкладов множества контуров, что уточняет оценку свободных энергий стабильных вторичных структур.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

PreRkTAG: Prediction of RNA Knotted Structures Using Tree Adjoining Grammars

Background: RNA molecules play many important regulatory, catalytic and structural <span style="font-variant: normal; font-style: norma...

متن کامل

Physicochemical Position-Dependent Properties in the Protein Secondary Structures

Background: Establishing theories for designing arbitrary protein structures is complicated and depends on understanding the principles for protein folding, which is affected by applied features. Computer algorithms can reach high precision and stability in computationally designing enzymes and binders by applying informative features obtained from natural structures. Methods: In this study, a ...

متن کامل

Relation Between RNA Sequences, Structures, and Shapes via Variation Networks

Background: RNA plays key role in many aspects of biological processes and its tertiary structure is critical for its biological function. RNA secondary structure represents various significant portions of RNA tertiary structure. Since the biological function of RNA is concluded indirectly from its primary structure, it would be important to analyze the relations between the RNA sequences and t...

متن کامل

RNA Secondary Structure Prediction Algorithms

RNA secondary structure prediction is an important problem studied extensively in the past three dacades. However, pseudoknots are usually excluded in RNA secondary structure prediction due to the hardness of examining all possible structures efficiently and model the energy correctly. Current algorithms on predicting structures with pseudoknots usually have extremely high resource requirements...

متن کامل

P-dcfold or How to Predict all Kinds of Pseudoknots in Rna Secondary Structures

Pseudoknots play important roles in many RNAs. But for computational reasons, pseudoknots are usually excluded from the definition of RNA secondary structures. Indeed, prediction of pseudoknots increase very highly the complexities in time of the algorithms, knowing that all existing algorithms for RNA secondary structure prediction have complexities at least of O(n). Some algorithms have been ...

متن کامل

Prediction of Secondary Structure of Citrus Viroids Reported from Southern Iran

Abstract Viroids are smallest, single-stranded, circular, highly structured plant pathogenic RNAs that do not code for any protein. Viroids belong to two families, the Avsunviroidae and the Pospiviroidae. Members of the Pospiviroidae family adopt a rod-like secondary structure. In this study the most stable secondary structures of citrus viroid variants that reported from Fars province wer...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008