INTEGRATED COURSE ON MOLECULAR BIOLOGY - MOLECULAR BIOLOGY
- Overview
- Assessment methods
- Learning objectives
- Contents
- Bibliography
- Delivery method
- Teaching methods
- Contacts/Info
Basic knowledge of Biochemistry and notions of Genetics.
General concepts of Cell Biology.
The exam is designed to assess the knowledge and understanding of the theoretical foundations of Molecular Biology acquired by students, and will focus on the discussion of the topics covered during the course. It will consist in a written test: students will be required to answer 4 open-ended and 5 multiple choice questions on topics that range throughout the program. The outcome will be of thirty. The exam is deemed passed with a vote of at least 18/30. Candidates who have obtained in the written test a score of 24 or above will be able to opt for an oral test aimed at improving their score.
The course provides a description of the molecular structure and function of nucleic acids, as well as of protein factors and enzymatic activity involved in replication, transcription and translation processes and their regulation. It aims to promote the acquisition of a solid, basic knowledge in Molecular Biology so that students can study and understand the molecular mechanisms that, in prokaryotes and eukaryotes, control the maintenance and the flow of genetic information. A further aim of the course is to allow students to become familiar with the main techniques used in this research field.
Lectures (6 CFU, 48 hours):
Introduction (0.5 CFU, 4 hours)
Introduction to biological macromolecules: Initial studies on DNA, RNA and proteins; Definition of the central dogma.
DNA: structure and conformation; Topoisomerases.
Molecular Biology techniques (0.75 CFU, 6 hours)
Plasmids, bacteriophages, viruses; Preparation and analysis of nucleic acids; Enzymes for DNA and RNA manipulation.
Cloning and cloning and expression vectors; Transformation and selection.
PCR: basic principles, RT-PCR and sequencing.
DNA: levels of structural organization and their significance (0.25 CFU, 2 hours)
Role of histones, nucleosomes, chromatin and chromosomes.
DNA replication in prokaryotes and eukaryotes (0.5 CFU, 4 hours)
The replicon model and replication origins; DNA polymerases (catalyzed reactions, accuracy and fidelity).
The replication fork and the replisome complex; Initiation, elongation, termination and their regulation.
Homologous recombination and DNA repair mechanisms in prokaryotes and eukaryotes (0.75 CFU, 6 hours)
Replication models; Recombination in DNA lesions repair.
Mutations and chromosomic alterations; Direct repair, BER, NER, mismatch repair, Tolerance mechanisms.
Site-specific recombination and Transposition (0.25 CFU, 2 hours)
Mechanisms, involved protein factors and enzymatic activities; Transposons and retrotransposons.
RNA and transcription (1 CFU, 8 hours)
RNA: types and structure; Molecular mechanisms in prokaryotes transcription; RNA polymerase: structure/function; Promoters; Steps in the transcription process.
Molecular mechanisms in eukaryotes transcription; RNA polymerase I, II and III; Specific promoters; Steps in the transcription process.
Introduction to regulation mechanisms in prokaryotes and eukaryotes; Cis and trans regulation elements; The operon concept, negative and positive regulation; DNA binding motifs in regulatory proteins; Gene enhancers and silencers; Chromatin remodeling.
Processing and maturation of eukaryotic RNA (0.5 CFU, 4 hours)
mRNA maturation: capping, polyadenylation and splicing of introns; Outlines to post-transcriptional modifications of rRNA and tRNA.
RNA editing, transport and stability.
Protein synthesis (1 CFU, 8 hours)
Ribosomes: rRNA and ribosomal protein structure and function; Aminoacyl-tRNA synthesis and amino acyl-tRNA synthetase.
Structure, properties and use of the genetic code; Codon-anticodon interaction (wobbling and degeneration)
Gene information translation: initiation, elongation, translocation and termination in prokaryotes and eukaryotes.
Post-translational modifications of proteins.
Regulation of gene expression in prokaryotes and eukaryotes (0.5 CFU, 4 hours)
Transcriptional regulation: lactose operon and tryptophan operon. The GAL system genes and eukaryotic transcriptional activators
Other levels of regulation: regulation of translation (general or specific); Phosphorylation eIF2 and global control of translation in eukaryotes; Regulatory RNAs in prokaryotes; RNAi; the molecular basis of RNA interference; microRNAs.
Slides of lectures can be downloaded from the Elearning site
Biologia Molecolare: struttura e dinamica di genomi e proteomi; J. Zlatanova, K.E. van Holde, Ed. Zanichelli, 2018
Biologia Molecolare: principi e tecniche, M.M.Cox; Ed. Zanichelli, 2013
Biologia Molecolare (terza edizione); F. Amaldi, P. Benedetti, G. Pesole, P. Plevani, Casa Editrice Ambrosiana, 2017
Fondamenti di Biologia Molecolare, L.A.Allison, Ed.Zanichelli, 2008
Biologia Molecolare, R.F. Weaver, Ed. Mc Graw-Hill, 2009.
Biotecnologie Molecolari (seconda edizione); T.A. Brown, Ed Zanichelli, 2017
The course includes only lectures, during which the teaching topics will be treated by using presentations (with slides in English) projected in the classroom.
Silvia Sacchi is always available to receive students, preferably by appointment (via requests to the email silvia.sacchi@uninsubria.it). She is also available for in-depth meetings or clarification on subjects covered in the course with groups of students, which will be agreed with the same mode.