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Sep 3, 2006 · QGRS Mapper can retrieve nucleotide sequence information from fully annotated entries of public genomic databases (GenBank/RefSeq), search transcribed regions of the genes for occurrences of Quadruplex forming G-Rich Sequences (QGRS) and analyze their distribution patterns near RNA processing sites.
QGRS Mapper will automatically download the nucleotide sequence of the gene and analyze it for QGRS sequences. You can use complex expressions like glyc* to perform a fuzzy search and obtain a list of gene names that match your string.
Jul 1, 2006 · We have developed a web-based server, QGRS Mapper, that predicts quadruplex forming G-rich sequences (QGRS) in nucleotide sequences. It is a user-friendly application that provides many options for defining and studying G-quadruplexes.
Jul 1, 2006 · QGRS Mapper is a web-based program, written in PHP, with Java being used for some of its graphics. The program takes a nucleotide sequence from NCBI (or as provided by the user) and analyzes it for the presence of putative G-quadruplexes. The structure of QGRS Mapper is summarized in Table 2. Search and analysis
Dec 31, 2007 · QGRS Mapper suite is based on published algorithms for recognition and mapping of putative QGRS, and is unique in that it can map quadruplexes in different parts of the transcribed regions and in the context of RNA processing sites.
Jan 1, 2020 · The quadruplex-forming G-rich sequence (QGRS) mapper algorithm takes a slightly different approach from regular expression matching algorithms by scoring each of the possible sequences in order to rank them and hence predict the most likely sequence when there are several alternatives .
Aug 5, 2006 · QGRS Mapper predicts quadruplex forming G-rich sequences (QGRS) in nucleotide sequences. It performs analysis of the user provided genomic sequences, e.g. promoter and telomeric regions, as well as RNA sequences and even in oligonucleotides.
Function . Retrieve. Query, retrieve and parse gene information from NCBI or obtain nucleotide sequence from user. Search. Identify all QGRS in a given sequence. Map. QGRS are mapped relative to locations such as splice sites in introns/exons, and poly (A) site.
Feb 5, 2019 · QGRS Mapper: a web-based server for predicting G-quadruplexes in nucleotide sequences.
The QGRS Mapper is a user-friendly web-based server that predicts quadruplex forming G-rich sequences (QGRS) in nucleotide sequences. The program provides options to search and retrieve desired gene/nucleotide sequence entries from NCBI databases for mapping G-quadruplexes in the context of RNA processing sites.
