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level: Level 1 of L6 (secondary databases) L7(syllabus )

Questions and Answers List

level questions: Level 1 of L6 (secondary databases) L7(syllabus )

QuestionAnswer
what are secondary databases?make use of publicly available sequence data in primary databases.
what are some bimolecular databases?UniProt ,ExPASy
how is UniProt structured?n
what is UniProt and what does this database consist of?UniProtKB Translation of EMBL coding sequences , UniProtKB/Swiss-Prot section (reviewed) which is annotated by experts and has high amounts of info, The rest (90% of the entries).
what are some of UniProts features?The most comprehensive protein database in the world,Annotation by experts: annotators are specialized for different types of proteins or organisms with huge team,World-wide recognized as an essential resource.
what is ExPASy?Expert Protein Analysis System
what are some 3D structure of macromolecules databases?Worldwide Protein Data Bank and The Protein Data Bank (PDB )
what are the 4 protein banks that comprise the World wide protein data bank?Biological Magnetic Resonance Data Bank (BMRDB), Research Collaboratory for Structural Bioinformatics Protein Data Bank (RCSB PDB), PDBj, and PDBe.
what is the genome databases used in (comparative genomics)EnsemblGenomes (access to complete genomes and proteomes)
what are the databases for protein domains?Prosite and CATH.
what does the Prosite database align sequences and logos?the sequences that are used to built the Prosite profile,The Sequence Logo indicates the level of conservation of each residue.
what is the domain signature in the Prosite database?The domain signature is a string-based pattern representing the residues that are characteristic of a domain.
what is CATH database? and how do they cluster proteins?is a hierarchical classification of protein domain structures, which clusters proteins at four major levels: ❑ Class (C), ❑ Architecture (A), ❑ Topology (T) ❑ Homologous superfamily (H).
How are the CATH boundaries and assignment for each protein determined?using a combination of automated and manual procedures which include computational techniques, empirical and statistical evidence, literature review and expert analysis.
what does Ontology mean?Ontology (information science)is the philosophical study of being, is a way of showing the properties of a subject area and how they are related, by defining a set of concepts and categories that represent the subject.
how to answer the problems of inconsistencies in the annotations?by Controlled vocabulary,Hierarchical classification between the terms of the controlled vocabulary.
what are the gene ontology processes?DNA metabolism ( DNA, repair, replication,packajing,recombonation)
what are the gene ontology molecular functions?nucleic acid binding and enzymes.
what are the gene ontology cellular components?nucleus and cytoplasm.
what's the gene ontology database ?The Gene Ontology (GO) database is a resource for ontological information.
what is the status of GO annotations?Term definitions (biological processes, molecular functions, cellular components, sequence ontology), Genomes with annotation (excluding annotations from UniProt) ,Annotated gene products. (total, electronic only, manually curated).
what's the quick GO?A user-friendly Web interface to the Gene Ontology, with Graphical display of the hierarchical relationships between terms that makes in convenient to brows between classes.
what are some remarks on "bio-ontologies"?Improvement compared to free text,Nothing to do with the philosophical concept of ontology (only a taxonomical classification),Multiple possibilities of classification criteria, it should remain purpose-based,No representation of molecular interactions (relationships between objects are only hierarchical).
What is biological function?A general definition,Function: characteristic action (role) of an element (organ) within an set
what is the function and gene ontology of biological functions?Understanding the function requires to establish the link between molecular activity and the context in which it takes place (process).
what are the databases that include small compounds, reactions and metabolic pathways?(KEGG) Kyoto Encycplopaedia of Genes and Genomes , (BioCyc ) Metabolic pathways.
how does the function and gene ontology have Multifunctionality?Same activity can play different roles in different processes, Multiple activities of a same protein in a given process.