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Phosphorylase T-state enzyme

Phosphorylase T-state enzyme

A605/0087

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Credit

L.N. JOHNSON, OXFORD MOLECULAR BIOPHYSICS LABORATORY / SCIENCE PHOTO LIBRARY L.N. JOHNSON, OXFORD MOLECULAR BIOPHYSICS LABORATORY / SCIENCE PHOTO LIBRARY

Caption

Glycogen phosphorylase (T-state). Computer graphic of one molecule of glycogen phosphorylase, an enzyme involved in breaking down glycogen. The action of glycogen phosphorylase provides fuel for muscle contraction; it also maintains the blood glucose balance. Here, the T- or "inactive" state of this enzyme is seen. It is a protein made of two polypeptide subunits (blue and purple). Thus this dimer molecule has a two fold axis. When inactive, N-terminal tails (thick white strands) are positioned as seen. When active, N-terminal tails twist, and red/yellow parts of the molecule alter. The active site is inside the blue subunit.

Release details

Model release not required. Property release not required.

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