<mxfile host="app.diagrams.net"><diagram name="roadmap"><mxGraphModel dx="1422" dy="794" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="1169" pageHeight="826" math="0" shadow="0">
  <root>
    <mxCell id="0" />
    <mxCell id="1" parent="0" />
    <mxCell id="node1" value="研究问题：crtY基因在大肠杆菌中是否存在非ATG替代翻译起始位点？" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="422" y="40" width="340" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node2" value="策略：定点突变构建crtY系列突变体，与crtE/crtI/crtB共表达于大肠杆菌" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="422" y="162" width="340" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node3" value="关键改造：crtY内部Val10(GTG)替代起始密码子鉴定" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#ffe6cc;strokeColor=#d79b00;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="422" y="284" width="340" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node4" value="HPLC分析：β-胡萝卜素与番茄红素产量测定" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f8cecc;strokeColor=#b85450;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="443" y="406" width="299" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node5" value="结果1：GTG作为替代起始密码子；GTA弱活性；TTG无环化功能" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="40" y="528" width="340" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node6" value="结果2：pTB-EIBY产β-胡萝卜素1.3mg/g DCW；突变体差异显著" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="450" y="528" width="340" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node7" value="结果3：N端9个氨基酸缺失不影响环化活性" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#ffe6cc;strokeColor=#d79b00;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="860" y="528" width="285" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node8" value="进化保守性：序列比对显示替代起始位点及Asp残基保守" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f8cecc;strokeColor=#b85450;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="218" y="650" width="340" height="64" as="geometry" />
    </mxCell>
    <mxCell id="node9" value="结论：crtY内部GTG替代起始位点调控环化酶表达，影响β-胡萝卜素/番茄红素比例" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#666666;fontSize=13;fontStyle=1;verticalAlign=middle;align=center;" vertex="1" parent="1">
      <mxGeometry x="628" y="650" width="340" height="64" as="geometry" />
    </mxCell>
    <mxCell id="edge1" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node1" target="node2">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge2" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node2" target="node3">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge3" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node3" target="node4">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge4" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node4" target="node5">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge5" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node4" target="node6">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge6" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node4" target="node7">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge7" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node5" target="node8">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge8" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node6" target="node9">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge9" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="node7" target="node9">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
    <mxCell id="edge10" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;endArrow=block;endFill=1;strokeWidth=1.6;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="node8" target="node9">
      <mxGeometry relative="1" as="geometry" />
    </mxCell>
  </root>
</mxGraphModel></diagram></mxfile>