Sift-PUL

Sift-PUL provides predicted polysaccharide utilization loci (PULs) with specific functional annotations to associate bacterial gene clusters with their respective polysaccharide substrates.

Key Features:

• Functional Annotation: Assigns specific functional annotations to each predicted PUL to infer biochemical functions related to polysaccharide metabolism.
• Prediction Method: Identifies PULs using signature genes corresponding to specific polysaccharides.
• Polysaccharide Coverage: Contains 10,422 predicted PULs specific to six polysaccharides: agar, alginate, pectin, carrageenan, chitin, and β-mannan.
• Taxonomic Diversity: Includes PULs derived from a diverse range of bacterial phyla.
• Comparative Distinction: Provides functional annotations not present in PULDB, CGCs, or dbCAN-PUL.

Scientific Applications:

• Novel Enzyme Discovery: Enables identification of candidate enzymes involved in polysaccharide degradation and modification.
• Pathway Elucidation: Supports mapping of biochemical pathways for polysaccharide utilization.
• Evolutionary Studies: Facilitates comparative analyses of PUL distribution and evolution across bacterial species and environments.
• Bioengineering Applications: Provides functional targets for engineering microbial pathways for applications such as bioremediation or biofuel production.

Methodology:

Predicted PULs were identified using signature genes corresponding to specific polysaccharides.