decorative arts have got a special place in iranian architecture traditionally. these types of arts are the symbol of nation's ethnics and indigenous features and also express the artist's feelings of those times. stucco is one type of the decorative arts that has decorated many buildings -especially palaces-that belong to the pre-islamic period and also mosques that built in the isla...

With the refinement of algorithms for the identification of distinct motifs from sequence databases, especially those using secondary structure predictions, new protein modules have been determined in recent years. Calponin homology (CH) domains were identified in a variety of proteins ranging from actin cross-linking to signaling and have been proposed to function either as autonomous actin bi...

Steganography, or information hiding, is to conceal the existence of messages so as to protect their confidentiality. We consider deciphering a stegoscript, a text with secret messages embedded within a covertext, and identifying the vocabularies used in the messages, with no knowledge of the vocabularies and grammar in which the script was written. Our research was motivated by the problem of ...

Non-coding RNAs play regulatory roles in gene expression via establishing stable joint structures with target mRNAs through complementary sequence motifs. Sequence motifs are also important determinants of the structure of ncRNAs. Here we introduce two computational tools that both exploit differential distributions of short sequence motifs in ncRNAs for the purpose of identifying their loci an...

The discovery of regulatory motifs enriched in sets of DNA or RNA sequences is fundamental to the analysis of a great variety of functional genomics experiments. These motifs usually represent binding sites of proteins or non-coding RNAs, which are best described by position weight matrices (PWMs). We have recently developed XXmotif, a de novo motif discovery method that is able to directly opt...

Abstract: Cell signaling networks are highly dynamic in their function, yet evolutionarily conserved in their core network motifs or topologies. Understanding functional tunability and robustness of network motifs to small perturbations in function and structure is vital to our ability to synthesize controllable circuits. In establishing core sets of network motifs, we selected topologies that ...

Multiple inositol polyphosphate phosphatase 1 (Minpp1) in higher organisms dephosphorylates InsP6, the most abundant inositol phosphate. It also dephosphorylates less phosphorylated InsP5 and InsP4 and more phosphorylated InsP7 or InsP8. Minpp1 is classified as a member of the histidine acid phosphatase super family of proteins with functional resemblance to phytases found in lower organisms. T...

iran is a large country with a vast variety of tribes and ethnic groups. these various tribes are unified with a national language and culture while using their own local languages and enriching ethnic art forms. among iranian ethnic groups, the turkmen are remarkable for their art of carpet weaving which has a unique structure compared to other designs and textures. the charming motifs on turk...

Sequence motifs are of greater biological importance in nucleotide and protein sequences. The conserved occurrence of identical motifs represents the functional significance and helps to classify the biological sequences. In this paper, a new algorithm is proposed to find all identical motifs in multiple nucleotide or protein sequences. The proposed algorithm uses the concept of dynamic program...