Proteins that share a similar function often exhibit conserved sequence patterns. Sequence patterns help to classify proteins into families where the exact function may or may not be known. Research has shown that these domain signatures often exhibit specific three-dimensional structures. We have previously shown that sequence patterns combined with structural information, in general, have sup...

The recent interest in function of various RNA structures, reflected in the growth of solved RNA structures in PDB, calls for methods for effective and efficient similarity search in RNA structural databases. Here, we propose a method called SETTER (RNA SEcondary sTructurebased TERtiary structure similarity) based on partitioning of RNA structures into so-called generalized secondary structure ...

Background: Mushroom Tyrosinase a potent candidate in clinical studies known as polyphenol oxidase, is a metaloenzyme from the oxidase superfamily widely distributed from lower to higher life forms. It plays a crucial role in sclerotization of exoskeleton in insects, also responsible for skin pigmentation in mammalians. Objective: In this study, after reconstitution of MT by some metal io...

Is highly approximate knowledge of a protein's backbone structure sufficient to successfully identify its family, superfamily, and tertiary fold? To explore this question, backbone dihedral angles were extracted from the known three-dimensional structure of 2,439 proteins and mapped into 36 labeled, 60 degrees x 60 degrees bins, called mesostates. Using this coarse-grained mapping, protein conf...

In molecular biology, sequence alignment is a fundamental but powerful technique. Biologists find the similarity, the difference and even the function of the input sequences (DNA, RNA and protein sequences) by it. With various purposes, there are many algorithms to align two sequences based on different criteria. Though there are various ways to align macromolecular sequences, a sequence alignm...

The protein structure prediction problem is one of the most studied problems in Computational Biology. It can be reasonably abstracted as a minimization problem. The function to be minimized depends on the distances between the various amino-acids composing the protein and on their types. Even with strong approximations, the problem is shown to be computationally intractable. However, the solut...

the basic goal of this research is recognition of losses of organizational structure of iranian central insurance and secondary importance are recognition of losses of organizationalcomplexity, organizational formalization and organizational centralization. for data collecting is designed aquestionnaire that is measuring organizational structure situation in robin’s structural dimension’s model...