1glb
From Proteopedia
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'''STRUCTURE OF THE REGULATORY COMPLEX OF ESCHERICHIA COLI IIIGLC WITH GLYCEROL KINASE''' | '''STRUCTURE OF THE REGULATORY COMPLEX OF ESCHERICHIA COLI IIIGLC WITH GLYCEROL KINASE''' | ||
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[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
| - | [[Category: Protein-N(pi)-phosphohistidine--sugar phosphotransferase]] | ||
[[Category: Faber, H R.]] | [[Category: Faber, H R.]] | ||
[[Category: Hurley, J H.]] | [[Category: Hurley, J H.]] | ||
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[[Category: Roseman, S.]] | [[Category: Roseman, S.]] | ||
[[Category: Worthylake, D.]] | [[Category: Worthylake, D.]] | ||
| - | [[Category: | + | [[Category: Phosphotransferase]] |
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Revision as of 14:43, 2 May 2008
STRUCTURE OF THE REGULATORY COMPLEX OF ESCHERICHIA COLI IIIGLC WITH GLYCEROL KINASE
Overview
The phosphocarrier protein IIIGlc is an integral component of the bacterial phosphotransferase (PTS) system. Unphosphorylated IIIGlc inhibits non-PTS carbohydrate transport systems by binding to diverse target proteins. The crystal structure at 2.6 A resolution of one of the targets, glycerol kinase (GK), in complex with unphosphorylated IIIGlc, glycerol, and adenosine diphosphate was determined. GK contains a region that is topologically identical to the adenosine triphosphate binding domains of hexokinase, the 70-kD heat shock cognate, and actin. IIIGlc binds far from the catalytic site of GK, indicating that long-range conformational changes mediate the inhibition of GK by IIIGlc. GK and IIIGlc are bound by hydrophobic and electrostatic interactions, with only one hydrogen bond involving an uncharged group. The phosphorylation site of IIIGlc, His90, is buried in a hydrophobic environment formed by the active site region of IIIGlc and a 3(10) helix of GK, suggesting that phosphorylation prevents IIIGlc binding to GK by directly disrupting protein-protein interactions.
About this Structure
1GLB is a Protein complex structure of sequences from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Structure of the regulatory complex of Escherichia coli IIIGlc with glycerol kinase., Hurley JH, Faber HR, Worthylake D, Meadow ND, Roseman S, Pettigrew DW, Remington SJ, Science. 1993 Jan 29;259(5095):673-7. PMID:8430315 Page seeded by OCA on Fri May 2 17:43:17 2008
