A SMART Team Modeling Project from the CBMA SMART Team Modeling Project from the CBM


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To the right is an image representation of Lac-Y permese of E-coli. The Ligand is shown , the Sidechains Participating in substrate binding are , and residues participating in proton translocation are here.

Function of Lactose PermeaseFunction of Lactose Permease

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(Caption)


Lactose Permease is a transmembrane protein that facilitates the passage of lactose across the phospholipid bi-layer of the cell membrane. The transport mechanism used is an active co-transport that uses the inwardly directed H+ electrochemical gradient as its driving force. As a result, the lactose is accompanied from the periplasm to the cytoplasm of the cell by an H+ proton.[1]

Lactose is a disaccharide carbohydrate found primarily in mammalian milk. It is a disaccharide composed of the monosaccharides glucose and galactose. When lactose is ingested, it is brought into cells in the digestive system by the protein Lactose Permease. Here it is broken down into its monosaccharide subunits by the enzyme lactase so it may be used in the process of cellular respiration.[2]

Image of Lac-y Permease

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Physical ModelsPhysical Models

 
Model Image 1: Rapid Prototype Model
 
Model Image 2: Mini-Toober Model

The model shown in Model Image 1 to the left is an example of a physical model of the zinc finger protien. In this representation, the Alpha Helix is shown in Red, the Beta Sheets are displayed in Yellow, and the Residues are represented in CPK color format (O=red, N=blue, C=gray, S=yellow). The Zinc Atom in this structure is colored Red.

The model in Model Image 2 shown to the right is an example of a 'mini-toober' model. The side chains are again displayed in CPK color format. The zinc atom in this example is displayed in green.





MSOE Center for BioMolecular ModelingMSOE Center for BioMolecular Modeling

 


The physical models shown on this page were designed and built by the MSOE Center for BioMolecular Modeling. For more information about physical protein modeling, visit the CBM web site at www.rpc.msoe.edu/cbm .

















MSOE Center for BioMolecular ModelingMSOE Center for BioMolecular Modeling

 
The model shown above is an example of a physical model of the zinc finger protien. In this representation, the Alpha Helix is shown in Red, the Beta Sheets are displayed in Yellow, and the Residues are represented in CPK color format (O=red, N=blue, C=gray, S=yellow). The Zinc Atom in this structure is colored Red.
 
This model is an example of a 'Mini-Toober' model. The backbone is created by the folding of a 'Mini-Toober,' the sidechains are depicted in CPK color format, and the zinc atom is shown in green.

















 


The physical models shown on this page were designed and built by the MSOE Center for BioMolecular Modeling. For more information about physical protein modeling, visit the CBM web site at www.rpc.msoe.edu/cbm .

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

Savannah Anderson, Amy Maslanka