From ceginfo@u.washington.edu Fri Aug 1 09:43:55 2003 Received: from mxu3.u.washington.edu (mxu3.u.washington.edu [140.142.32.133]) by lists.u.washington.edu (8.12.9+UW03.06/8.12.9+UW03.06) with ESMTP id h71Ghs2x040540 for ; Fri, 1 Aug 2003 09:43:54 -0700 Received: from mxout5.cac.washington.edu (mxout5.cac.washington.edu [140.142.32.135]) by mxu3.u.washington.edu (8.12.9+UW03.06/8.12.9+UW03.06) with ESMTP id h71GhrJM004741 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO) for ; Fri, 1 Aug 2003 09:43:53 -0700 Received: from homer37.u.washington.edu (homer37.u.washington.edu [140.142.16.3]) by mxout5.cac.washington.edu (8.12.9+UW03.06/8.12.9+UW03.06) with ESMTP id h71Ghqin012238 for ; Fri, 1 Aug 2003 09:43:52 -0700 Received: from localhost (ceginfo@localhost) by homer37.u.washington.edu (8.12.9+UW03.06/8.12.9+UW03.06) with ESMTP id h71Ghqah051012 for ; Fri, 1 Aug 2003 09:43:52 -0700 Date: Fri, 1 Aug 2003 09:43:51 -0700 (PDT) From: Civil and Environmental Engineering To: cegrads@u.washington.edu Subject: August 4 Schueler Seminar Room Change (fwd) Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=X-UNKNOWN Content-Transfer-Encoding: QUOTED-PRINTABLE X-Uwash-Spam: Gauge=IIIII, Probability=5%, Report='__HAS_MSGID, __SANE_MSGID, SUBJECT_MONTH_2, SUBJECT_MONTH, SUPERLONG_LINE' Marcia Buck Graduate Advising Office, More 201F Dept. of Civil & Environmental Engineering University of Washington Box 352700 Seattle, WA 98195-2700 (206) 543-2574 email: ceginfo@u.washington.edu ---------- Forwarded message ---------- Date: Fri, 1 Aug 2003 08:48:28 -0700 From: Pam Hjelm To: Martin Koenneke , Meredith Hullar , Jesse Dillon , Anne Bernhard , Heidi Gough , Seana Davidson , Jim Smoot , Paul Berube , Nick Pinel , Laura Smoot , Sergey Stolyar , Erik Tribou , Beto Zuniga , Jak Koke , faculty@ce.washington.edu Subject: August 4 Schueler Seminar Room Change Monday afternoon (August 4) is open for discussions with Dr. Sch?eler. Plea= se contact Martin Koenneke (koenneke@u.washington.edu) to schedule a discus= sion time. Also, please note the room number has been changed to More 225. Special Guest Scientist Seminar "Making Magnets by Microbes: Molecular Biology of Biomineralization in Magnetotactic Bacteria" Dr. Dirk Sch=FCeler Max-Planck-Institute for Marine Microbiology Bremen, Germany http://www.mpi-bremen.de/magneto/people/schueler.html http://www.mpi-bremen.de/magneto Monday, August 4, at noon in More 225 Organized by Professor David Stahl and Dr. Martin Koenneke Dept. of Civil and Environmental Engineering Abstract: Magnetotactic bacteria (MTB) are able to orient and migrate along magnetic = field lines. This intriguing ability is based on specific intracellular str= uctures, the magnetosomes, which are nanometer-sized, membrane-bound magnet= ic particles consisting of the iron mineral magnetite (Fe3O4). Intracellula= r magnetosome formation is achieved by an unique biomineralization process,= which is poorly understood at the molecular level. Besides the analysis of the natural diversity of MTB, we are studying the m= agnetosome formation in Magnetospirillum gryphiswaldense, which can be read= ily grown by microaerobic techniques and is amenable to genetic manipulatio= n. The magnetosome membrane in M. gryphiswaldense contains a number of spec= ific proteins that are encoded by the mam-genes. Functions of the Mam-prote= ins involve the compartmentalization of biomineralization, the transport of= iron and the control of nucleation and crystal growth. Most of the mam-gen= es that are essential for magnetosome formation could be assigned to differ= ent operons clustered within a genomic region, which represents a putative = "magnetosome island". Magnetosome assembly is currently being studied by ge= netic analysis and localization studies involving GFP-fusions. Pam Hjelm, Secretary University of Washington Dept. of Civil and Environmental Engineering Box 352700 Seattle, WA 98195-2700 Phone: 206-543-2549 Fax: 206-685-9185 .