03511/03711 - Syllabus

Computational Molecular Biology and Genomics - Syllabus, Fall 2022


The materials in the "Assigned Reading" column are directly related to the topics covered in class. Readings under "Additional Topics" are strictly optional and will not be covered on the exams.

In some cases, the same material is covered in more than one textbook. You have the choice of selecting the text that presents a treatment of the material most to your liking. It is your responsibility to make sure that you understand the material covered in class and you may read as many or as few of these texts needed to achieve that goal.

Access to full Lecture Notes   Updated Lecture Notes (10/24/22)  


   
CLASS
DATE
TOPICS
ASSIGNED READING
ADDITIONAL TOPICS
1.   Aug. 30 Introduction
Pairwise sequence alignment (lecture notes, pp. 1 - 9)

PS0 due 10am on Tuesday, Sept. 6th
Review biology and algorithms background
2.  Sep. 1 Global pairwise sequence alignment, class notes pp. 1-9

Alignment examples
distance scoring.
similarity scoring.
Global pairwise alignment
- Setubal and Meidanis, 47-57, 89-92, 96-98;
- Durbin, 17-24
  • Saving space,
    - Setubal and Meidanis, 58-60; (physical reserve)
  • General and affine gap penalty functions,
    - Setubal and Meidanis, 60-66 (physical reserve)
    - Durbin, 29-30
  • Semi-global alignment
    - Setubal and Meidanis, 56-57,
  • 3.  Sep. 6 Local pairwise alignment
          Local alignment examples.

    PS0 DUE 10am via Canvas  
    Local pairwise alignment
    - Setubal and Meidanis, p. 55,
    - Durbin, 23-24
    4.  Sep. 8 Local pairwise sequence alignment.

    PS1 due midnight Friday, Sept. 16th

    Markov Chain background
    - Ewens and Grant, 4.4-4.8
    - Durbin et al., 48-51 (Section 3.1)
    5.  Sep. 13 Introduction to Markov chains and random walks (lecture notes, Section 2.1-2.2)

    7Eleven assignment 1 due midnight on Wed, Sept.21st
     
    6.  Sep. 15 Markov models of sequence evolution, Jukes-Cantor model (lecture notes, Section 2.3 )

    PS2 due midnight Friday, Sept. 23rd
    Models of nucleotide substitution
    - Durbin et al., 8.2, pp. 193 - 197 only
     
    7.  Sep. 20 Markov models of sequence evolution, applications of DNA substitution models (lecture notes, Sections 2.3 and 2.4)

    Seven11-1 due tomorrow (Wednesday) at midnight
     
    8.  Sep. 22 Applications of DNA substitution models (lecture notes, Section 2.4)

    Jukes-Cantor worksheet

    PS3 due midnight Friday, Sep 30.
     
    9.  Sep. 27 Log-odds scoring (lecture notes, Section 3.1)

     
    10.  Sep. 29 Amino acid substitution matrices: PAM matrices (lecture notes, Section 3.2)
    Today's slides

    PS4 EXTENSION due midnight SATURDAY Oct 8th.
    Substitution matrices:
    - Setubal and Meidanis, 80-84;
    - Mount, pp. 76-89;
    - Durbin et al, pp. 14-16
     
    11.  Oct. 4 Substitution matrices, cont'd
      PAM250,   PAM30

    7Eleven-2 due midnight, Fri, Oct 14th  
    12.  Oct. 6 PAM, PS 4 due SATURDAY Oct 8, at midnight.

       
    13.  Oct. 11 In-class EXAM
      - This exam is closed book. You may bring two pages (or one page, front and back) of your own notes.
      - The exam covers material covered in Lectures 1 through 9.

    Study Guide

       
    14.  Oct. 13 BLOSUM matrices
    Today's slides

      BLOSUM62

    BLOSUM Matrices:
    - Ewens and Grant, 6.5.2.
    - Amino acid substitution matrices from protein blocks, Henikoff S, Henikoff JG., PNAS 89(22):10915-9, 1992
     
      Oct. 18 & Oct. 20

    Mid semester break, NO CLASS.



       
    15.  Oct. 25 Motifs, local multiple sequence alignment, PSSMs, the Gibbs Sampler.
    PSSM example, with and without pseudocounts.
    Today's slides

    PS5 due midnight Oct 30th.

    Gibbs sampler
    Ewens and Grant, 211-215.
    Theoretical framework, convergence proofs
    - Ewens and Grant, 10.5.2, (physical reserves).
    - Detecting subtle sequence signals: a Gibbs sampling strategy for multiple alignment, Lawrence et al., Science. 1993 262(5131):208-14.
    - Explaining the Gibbs sampler, G. Casella & E. I. George, The American Statistician, 46:167-174, 1992
    16.  Oct. 27 Gibbs Sampler

    7Eleven-34 due midnight, Fri, Nov 11th  
    -->

       
    17.  Nov. 1 Introduction to HMMs

     
    18.  Nov. 3 Introduction to HMMs, cont'd

       
    19.  Nov. 8 HMMs: Recognition
    Viterbi example,
    Forward example.


    PS6 due midnight Fri, Nov 18th
    Viterbi, Forward, Backward algorithms
    - Durbin et al, 55 - 61
    - Ewens and Grant, 329-332
    .
     
    20.  Nov. 10 HMMs: Modeling, parameter estimation

    HMM Topology
    Durbin et al, 68-71
    Parameter estimation, Baum-Welch algorithm
    Durbin et al, 61-71
    Ewens & Grant, 329-332
     
    21.  Nov. 15 HMM topology, Profile HMMs examples


    Profile HMMs
    Durbin et al, 100-110
    Multiple alignment using HMMs
    Ewens & Grant, 335 - 337
    22.  Nov. 17 Multiple alignment using Profile HMMs

    PS7 due midnight Fri, Dec 2nd
      Protein multiple sequence alignment, Do and Katoh, 2008. (electronic reserves)
    24.  Nov. 22 Profile HMMs Today's slides

    7Eleven-5 due midnight, Sun, Dec 4th  
       
      Nov. 24 Thanksgiving Holiday: No class

     
    24.  Nov. 29 Searching sequence databases
    The Basic Local Alignment Search Tool (Blast).


    Blast 1990
    - Setubal and Meidanis, 84-87
    - Basic local alignment search tool, Altschul et al. , J. Mol. Bio., 1990
    25.  Dec. 1 The statistics of database searching



    PS8 due midnight Fri, Dec 9th

    Blast statistics and data base searching:
    - The statistics of sequence similarity scores S. F. Altschul
    - Amino acid substitution matrices from an information theoretic perspective, S. F. Altschul, J. Mol. Bio., 219:555-565, 1991 .
    - A protein alignment scoring system sensitive at all evolutionary distances, S. F. Altschul, J. Mol. Evol., 36:290-300, 1993.
    26.  Dec. 6 Blast statistics continued, Today's slides



    27.  Dec. 8 Blast statistics continued, Today's slides



    Final exam
    Dec. 12
    Final exam
    8:30am - 11:30am
    Hamerschlag B131


    Study Guide

      The exam covers the entire semester, but with a strong emphasis on the last third of the course.
      This exam is closed book. You may bring four pages (or two pages, front and back) of your own notes.


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    Last modified: Dec 10, 2022.