Astrobiology: Life in the Universe

Astrobiology Science and Technology for Exploring Planets (ASTEP)


  1. Seminar Detail

    Phosphorus and the Origin of Life

    Phosphorus and the Origin of Life

    Presenter: Matthew Pasek

    November 20, 2007 02:30 PM Pacific

    Phosphorylated biomolecules like RNA, DNA, ATP, phospholipids, and many coenzymes are critical to life as we know it. Presumably, given their central role in life, phosphorylated biomolecules were also critical for the origin or early evolution of life on the Earth. The origin of these biomolecules remains one of the major questions in origins of life research.

    Recent discoveries have suggested that the reaction of meteoritic schreibersite with water produces abundant reduced phosphorus compounds which may have encouraged the synthesis of critical prebiotic molecules. The cosmochemistry, geochemistry, and biochemistry of phosphorus will be summarized to point to pathways for the incorporation of phosphorus in the origin of life.

    Participation Instructions

    With a Polycom....RSVP to Marco Boldt (Marco.Boldt@nasa.gov) and connect to WebEx as instructed below. If you need Polycom help during the live event, message Marco Boldt in WebEx.

    The slides from the seminar can be accessed real-time using WebEx at:

    https://nasa.webex.com

    Enter the meeting number: 925 321 179 Hit the "join now" button.

    Enter your name or site name (this is not an assigned log-in name, please use your institution name or your first and last name), email and the password: pasek123* (case sensitive)

    If you've never joined a WebEx meeting before, please allow an extra 5-10 minutes to install the plug-in.

    Without a Polycom...There are two ways to participate:

    1) You can listen to the seminar on the telephone while viewing the slides in WebEx (see WebEx instructions above). The NASA conference phone number will be displayed when joining the WebEx meeting.

    2) You can watch the Realplayer webcast at: http://vanseg-1.arc.nasa.gov/2007/AB071120-01.ram and view the slides in WebEx (see WebEx instructions above) There is a 30 second delay for the webcast, so you will need to control the slides manually using the arrow buttons in WebEx. Questions for the speaker can be posted in the WebEx chat area to be answered at the end of the talk. Do not try to watch the Realplayer webcast at the same time as the Polycom or the phone.


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