Y
yandex99
Luminary
- Joined
- Sep 6, 2023
- Posts
- 8,203
- Reputation
- 7,761
SIFTER in common descent
+2
SIFTER (Sequence機能 Inference from Taxonomically-Encoded Rankings) is a bioinformatics tool that uses a phylogenetic, tree-based approach to predict protein functions, grounded in the model of common descent. Unlike heuristic-based tools (like BLAST) that align sequences, SIFTER analyzes a nested hierarchy of evolutionary relationships to infer function more accurately than simple similarity methods. [1]
+2
SIFTER (Sequence機能 Inference from Taxonomically-Encoded Rankings) is a bioinformatics tool that uses a phylogenetic, tree-based approach to predict protein functions, grounded in the model of common descent. Unlike heuristic-based tools (like BLAST) that align sequences, SIFTER analyzes a nested hierarchy of evolutionary relationships to infer function more accurately than simple similarity methods. [1]
- Basis in Common Descent: SIFTER operates by constructing a phylogenetic tree (or using a pre-constructed tree) that represents the evolutionary relationships between sequences. It maps known function annotations to this tree to infer the most likely function of related proteins.
- Performance: Studies indicate that SIFTER, as a proxy for the common descent model of protein evolution, offers improved accuracy in protein function prediction compared to simple BLAST-based searches, particularly when dealing with families containing diverse functions.
- Mechanism: SIFTER evaluates the tree, including the number of mutations (\(M_{n}\)) and the diversity of sequence types (alleles, \(K_{n}\)) on the genealogy, to determine relationships and annotate function. [1, 2, 3, 4, 5]