منابع مشابه
Homology-extended sequence alignment
We present a profile-profile multiple alignment strategy that uses database searching to collect homologues for each sequence in a given set, in order to enrich their available evolutionary information for the alignment. For each of the alignment sequences, the putative homologous sequences that score above a pre-defined threshold are incorporated into a position-specific pre-alignment profile....
متن کاملTest for Nucleotide Sequence Homology
Two macromolecular sequences which have evolved from a common ancestor sequence will tend to include a large number of elements unaffected by replacement mutations in both sequences, as long as the evolutionary rate is not too high or the divergence time is not too great. The positions of corresponding elements may have changed in either daughter sequence due to deletion/insertion mutations inv...
متن کاملSequence Matching in Homology Modeling
Homology-based modeling, or more simply homology modeling, is becoming increasingly important. Models accurate to within 1-2 Å RMS deviation from the actual three-dimensional structure can be produced by homology modeling in favorable cases. With the number of known threedimensional structures projected to grow to more than ten thousand structures by the end of the decade, it will be possible t...
متن کاملSequence homology within the morbilliviruses.
Double-stranded cDNA synthesized from total polyadenylate-containing mRNA extracted from monkey kidney cells infected with canine distemper virus (CDV) was cloned into the PstI site of Escherichia coli plasmid pBR322. Clones containing CDV DNA were identified by hybridization to a CDV-specific 32P-labeled cDNA. A cDNA clone containing an insert 1,700 base pairs (CDV 364) has been identified as ...
متن کاملMolecular Homology and Sequence Alignment
Phylogenetic analysis depends crucially on the data underlying the analysis, with issues of data quality being but one aspect of the problem. A second, slightly less appreciated aspect is that of data comparability and specifically the evolutionary homology (= derivation from a common shared ancestry) of the individual characters being examined. The goal of sequence alignment is to establish th...
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ژورنال
عنوان ژورنال: Nature
سال: 1987
ISSN: 0028-0836,1476-4687
DOI: 10.1038/329021a0