From Proteopedia
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Adenylate Kinase
Adenylate Kinase is an enzyme that helps in the conversion of 2 units of ADP into one of ATP and one of AMP. It has two chains:
and Chain B. Adenylate Kinase plays an important role in cell energy homeostatis because of of its function. It is made of 214 amino acids.
Structure
The of Adenylate Kinase consists of alpha helices (purple) and the beta sheets(lime green). There are seven sheets and 12 helices.
The of the backbone are shown in yellow. They provide the structure by holding the protein together and giving it its shape.(Link may not show up).
The enzyme has (blue)that are located are the inside of the protein. This makes sense because the enzyme is surrounded by water, and thus these residues would want to be as far away from this as possible. The enzyme also has residues (purple) located on the outside, which have an affinity for water and allow for the enzyme to move and function in the water and let substrate reach the active site.
The (orange) in the center of the protein has (yellow) that allow binding to occur. The (maroon) can't interract with the ligand, because it is centrally located. This allows the active site not to be interfered with, and allows the enzyme to function properly.
Sources
http://en.wikipedia.org/wiki/Adenylate_kinase
http://www.proteopedia.org/wiki/index.php/Adenylate_kinase
