CMOP Seminar by Robert Morris on 1/18: Environmental Proteomics

Paul Clayton Building—Room 401

Environmental Proteomics

Dr. Robert Morris, University of Washington, School of Oceanography

ABSTRACT: Because proteins, rather than genes, determine an organism’s phenotype under a defined set of conditions, proteomic approaches are ideal for in situ verification of microbial processes. Proteomic detection methods using tandem mass spectrometry (MS/MS) generate short amino acid sequences from peptides. We used nanoLC/MS/MS approaches to identify proteins in mixed communities containing Dehalococcoides spp and from marine bacterioplankton in the Sargasso Sea. Membrane proteins detected in Dehalococcoides corresponded to known functions in characterized cultures and predicted functions in uncharacterized mixed cultures. Much like Dehalococcoides spp., cultured marine cyanobacteria share a high degree of 16S rDNA sequence similarity but exhibit distinct physiologies (ecotypes). Thus, detecting proteomic variability in cultured cyanobacteria will help identify proteins and peptides that may serve as in situ physiological bioindicators for niche differentiation. One of our objective is to identify variability in the membrane meta-proteome of picoplankton populations in distinct nutrient regimes in the South Atlantic.

Read more about Dr. Morris

The seminar will take place in the usual location for CMOP Seminars:

Paul Clayton Building—Room 401
OGI School of Science & Engineering
Oregon Health & Science University (West Campus)
20000 NW Walker Road
Beaverton, OR 97006

The seminar may be also available by two-way videoconference and by webcast (non-interactive). Contact Jim Nurmi for more information.

To meet with Dr. Morris during his visit, contact Suzanna Bräuer.

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