Learning objectives
Theoretical and practical skills of bioinformatic analysis of complete genomes
Course unit content
Introduction: sequences and structures, data management and analysis, central dogma, evolutionary history of sequences and genome. Evolution of DNA and proteins: Neutral theory, homology, orthology, paralogy, similarity, metrics for sequence comparison, PAM, divergence, molecular clock, Ks, Ka, accelerated evolution, convergent evolution. Biochemical predictions: predictable biochemical properties, patterns and signals, convergent evolution of patterns, Prosite, search for patterns, degradation signals, PEST, protein sorting, signal sequences, anchor sequences, glycosylation, phosphorylation, ProtParam. Structure of RNA and proteins: Types of secondary RNA structures, hairpin, bulge, loop, pseudoknots, Minimum free energy, stacking energy, covariance analysis, prediction of secondary structures, PHD, accessibility to solvent, classes, architecture, fold, CATH, SCOP, homology modelling, threading, Coiled coils, membrane proteins, transmembrane topology. Pairwise alignment: combinatorial alignment, Dot plots, repeated sequences, algorithm, dynamic programming, Needleman-Wunsh, Smith-Waterman, gap penalty, significance. Multiple alignment: Uses of multiple alignment, MSA, progressive alignment, CLUSTALW, iterative alignment, PRRP, BAliBASE, profiles, hidden Markov models, HMM profiles, Pfam, Sequence logos. Databases and search for homology: entry, GenBank, SwissProt, PDB, Expressed Sequence Tags, IMAGE, SRS, Entrez, FASTA, BLAST, PSI-BLAST, significance, sensitivity, selectivity, coverage. Phylogenetic analysis: tree of life, nomenclature of phylogenetic trees, cladograms, phylograms, ultrametric trees, rooted and unrooted trees, amino acid and nucleotide distances, UPGMA, Neighbour-joining, maximum likelihood, parsimony, bootstrap. Genomes: physical maps and genetic maps, DNA fingerprinting, BAC, genomic sequencing methods: clone by clone and WGS, assembly, contig, scaffold, draft and finished sequences, ORF, gene-finding. Comparative genomics. Functional associations between proteins inferred from complete genomes.
Bibliography
Bioinformatica, Pascarella e Paiardini, Zanichelli, 2010
Bioinformatics: Sequence and Genome analysis. D. W. Mount, CSHL Press, 2001
Protein Evolution. L. Patty, Blackwell Science, 1999
Teaching methods
Lectures, practical exercise in a computer room
Assessment methods and criteria
Solution of bioinformatics problems during exercises in the classroom. Final dissertation with bioinformatic analyses carried out by the student.
Final oral exam
