LY T I C A N D LY S O G E N I C C Y C L E S O F B A C T E R I O P H A G E

THE INSIDE LOOK OF BACTERIOPHAGES

Nicole Colón, Astrid Díaz, Lysander Borrero y Alberto Cintrón

OBJECTIVES:

• Explain what mycobacteriophages are and why are they important.

• Distinguish between bacteriophage lytic and lysogenic cycles.

MYCOBACTERIOPHAGES

• Viruses that infect bacteria belonging to the mycobacteria genus. • Can be found in the environment, including soil.• Can cause diseases• Are used as a model to study biological process

Institute for Molecular Virology. University of Wisconsin . 2005

BACTERIOPHAGE STRUCTURE

DNAHead

Tail

LIFE STYLES

• Mycobactheriophage can be group according to their life styles.

• Two different life cycle: a) Lytic cycle b) Lysogenic cycle

Lytic Cycle

Used by virulent phages

Is characterized by phage reproduction followed by host cell lysis.

LYSOGENIC CYCLE

LIFE CYCLE VIDEO

• http://highered.mcgraw-hill.com/sites/0072556781/student_view0/chapter17/animation_quiz_2.html

REFERENCES

• Rubin M.2012.Cluster Classification of Mycobacteriophages Isolated From Tropical Soils of Puerto Rico. • Prescott.Harley.Klein.2005.Microbiology. 6th

edition. McGraw-Hill Higher Education.•  About Biology. Regina Bailey. (unknown).

Bacteriophages.

ACKNOWLEDGMENTS

• Dr. Rubin• TA: Melisa Medina • TA: Valeria Rivera • RISE Program

THANKS FOR YOUR ATTENTION !

QUESTIONS ?

Table 1

Figure 1

Table 2 A y B