Bioinformatics quest for the yeast cell-cell fusogen

PABLO AGUILAR; AGUSTINA OLIVERA-COUTO; DANIELA MEGRIAN

Workshop; Cell-cell fusion EMBO Workshop; 2013

<!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:-536870145 1107305727 0 0 415 0;} @font-face {font-family:Cambria; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:-536870145 1073743103 0 0 415 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin-top:0in; margin-right:0in; margin-bottom:10.0pt; margin-left:0in; mso-pagination:widow-orphan; font-size:12.0pt; mso-bidi-font-size:10.0pt; font-family:Cambria; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:Cambria; mso-fareast-theme-font:minor-latin; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; font-family:Cambria; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:Cambria; mso-fareast-theme-font:minor-latin; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} .MsoPapDefault {mso-style-type:export-only; margin-bottom:10.0pt;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --> Yeast mating as been extensively used as a genetic model to understand basic cell biological processes such as cell growth polarization, MAP kinase signaling and cell-cell fusion. Present knowledge in yeast mating is vast and profound, ranging from a detailed map of genes involved in every step of this process to accurate mathematical modeling of the mating pheromone response. Surprisingly, the identity of the molecular machinery that promotes cell-cell fusion remains unknown. Functional redundancy within or between the mating partners may account for this elusive behavior. In order to identify genes that mediate cell-cell fusion during yeast mating we performed a bioinformatics search across the Saccharomyces cerevisiae?s genome. This search incorporated a wealth of baker´s yeast genomics, proteomics and transcriptomics data, the structural diversity of known membrane fusogens and a variety of informatics tools including distant homology prediction using hidden Markov models. Throughout quantitative assessment of each dataset and integrative evaluation we have obtained a ranked list of yeast fusogen candidates that we are currently testing by systematic gene deletion and phenotypic analysis.