Plastocyanin structure

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Eric C. Niederhoffer, Ph.D.

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Plastocyanin in its oxidized (1bxu) and reduced (1bxv) state from Synechococcus sp. PCC 7942

What structural elements are present in the protein?
What is the subunit composition?
What is the coordination geometry about each copper ion?
What changes occur during oxidation-reduction reactions? Hint: You may want to align the structures and check distances.

Inoue, T., H. Sugawara, S. Hamanaka, H. Tsukui, E. Suzuki, T. Kohzuma, and Y. Kai. 1999. Crystal structure determinations of oxidized and reduced plastocyanin from the cyanobacterium Synechococcus sp. PCC 7942. Biochemistry 38:6063-6069.

Plastocyanin (1bxu) oxidized

Plastocyanin (1bxv) reduced

Active Site View

Push the button to observe the following residues within 3.0 Å of the type I copper center:

Cys84, His37, His87, Met92

Push button

for Original View

Active Site View

Push the button to observe the following residues within 3.0 Å of the type I copper center:

Cys84, His37, His87, Met92

Push button

for Original View

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updated: 02/01/2004 16:15:26

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Eric C. Niederhoffer, Ph.D.

Plastocyanin (1bxu) oxidized

Plastocyanin (1bxv) reduced

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