Location: Marwan, 2003 @ c650cbabe8a6 / marwan_2003.cellml

Author:
Hanne <Hanne@hanne-nielsens-macbook.local>
Date:
2009-12-10 11:02:49+13:00
Desc:
Addedi mages in ai and svg format, removed non pub med reference
Permanent Source URI:
http://models.cellml.org/workspace/marwan_2003/rawfile/c650cbabe8a6a657858bcd7267fa7d5151e94665/marwan_2003.cellml

<?xml version='1.0' encoding='utf-8'?>
<!--  FILE :  marwan_model_2003.xml

CREATED :  9th February 2004

LAST MODIFIED : 9th February 2004

AUTHOR :  Catherine Lloyd
          Bioengineering Institute
          The University of Auckland
          
MODEL STATUS :  This model conforms to the CellML 1.0 Specification released on
10th August 2001, and the 16/1/02 CellML Metadata 1.0 Specification.

DESCRIPTION :  This file contains a CellML description of Marwan's 2003 mathematical model of sporulation control in Physarum polycephalum.

CHANGES:  
  
--><model xmlns="http://www.cellml.org/cellml/1.0#" xmlns:cmeta="http://www.cellml.org/metadata/1.0#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bqs="http://www.cellml.org/bqs/1.0#" xmlns:cellml="http://www.cellml.org/cellml/1.0#" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:vCard="http://www.w3.org/2001/vcard-rdf/3.0#" cmeta:id="marwan_2003_version01" name="marwan_2003_version01">
<documentation xmlns="http://cellml.org/tmp-documentation">
<article>
  <articleinfo>
  <title>Kinetic Model for the Sensory Control of Sporulation in Physarum polycephalum</title>
  <author>
    <firstname>Catherine</firstname>
          <surname>Lloyd</surname>
    <affiliation>
      <shortaffil>Bioengineering Institute, University of Auckland</shortaffil>
    </affiliation>
  </author>
</articleinfo>
  <section id="sec_status">
    <title>Model Status</title>
    <para>
            This is the original unchecked version of the model imported from the previous
            CellML model repository, 24-Jan-2006.
          </para>
  </section>
  <sect1 id="sec_structure">
<title>Model Structure</title>

<para>
Complementation is the production of a wildtype phenotype when two recessive mutant alleles are combined in the same genotype.  In fungi complementation can arise when two mutant cells form to produce a heterokaryon.  In such heterokaryons two nuclear populations mix, providing the biochemical basis for the complementation effect.
</para>

<para>
In the Marwan 2003 publication described here, the author uses the photosensory control of sporulation in the protist <emphasis>Physarum polycephalum</emphasis> as an example of how complementation in a heterokaryon can create a wildtype phenotype.  Marwan also investigates how such a process can depend on the time-dependent physiological state adopted after pathway activation by one of the mutant fusion partners. 
</para>

<para>
The kinetic model of this process can be seen in <xref linkend="fig_reaction_diagram"/> below.  Two inputs, light of the far-red wavelength and glucose, control the devlopmental switch network through formation of the sporulation signal <emphasis>S</emphasis>.  Photoreceptor and glucose sensor dependent pathways are integrated by a mechanism which behaves like a logic AND gate.  Transcription of gene S is repressed by the product of gene V, while the transcription of gene V is reiprocally repressed by the product of gene S. 
</para>

<para>
The model has been described here in CellML (the raw CellML description of the Marwan 2003 model can be downloaded in various formats as described in <xref linkend="sec_download_this_model"/>).     
</para>

<para>
The complete original paper reference is cited below:
</para>

<para>
Theory of Time-Resolved Somatic Complementation and Its Use to Explore the Sporulation Control Network in <emphasis>Physarum polycephalum</emphasis>
, Wolfgang Marwan, 2003, <emphasis>Genetics</emphasis>, 164, 105-115.  <ulink url="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&amp;db=PubMed&amp;list_uids=12750324&amp;dopt=Abstract">PubMed ID: 12750324</ulink>
</para>

<informalfigure float="0" id="fig_reaction_diagram">
<mediaobject>
  <imageobject>
    <objectinfo>
      <title>reaction diagram</title>
    </objectinfo>
    <imagedata fileref="marwan_2003.png"/>
  </imageobject>
</mediaobject>
<caption>Schematic diagram of the kinetic model for the sensory control of sporulation in <emphasis>Physarum polycephalum</emphasis>.</caption>
</informalfigure>

</sect1>
</article>
</documentation>
  
  
  
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            Theory of Time-Resolved Somatic Complementation and Its Use to Explore the Sporulation Control Network in Physarum polycephalum
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        Marwan's 2003 mathematical model of sporulation control in Physarum polycephalum.
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