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1B5S

DIHYDROLIPOYL TRANSACETYLASE (E.C.2.3.1.12) CATALYTIC DOMAIN (RESIDUES 184-425) FROM BACILLUS STEAROTHERMOPHILUS

Summary for 1B5S
Entry DOI10.2210/pdb1b5s/pdb
DescriptorDIHYDROLIPOAMIDE ACETYLTRANSFERASE (1 entity in total)
Functional Keywordsdihydrolipoyl transacetylase, pyruvate dehydrogenase, e2p, dihydrolipoyl acetyltransferase, acyltransferase
Biological sourceGeobacillus stearothermophilus
Total number of polymer chains5
Total formula weight132183.92
Authors
Izard, T.,Aevarsson, A.,Allen, M.D.,Westphal, A.H.,Perham, R.N.,De Kok, A.,Hol, W.G. (deposition date: 1999-01-10, release date: 1999-02-16, Last modification date: 2024-05-22)
Primary citationIzard, T.,Aevarsson, A.,Allen, M.D.,Westphal, A.H.,Perham, R.N.,de Kok, A.,Hol, W.G.
Principles of quasi-equivalence and Euclidean geometry govern the assembly of cubic and dodecahedral cores of pyruvate dehydrogenase complexes.
Proc.Natl.Acad.Sci.USA, 96:1240-1245, 1999
Cited by
PubMed Abstract: The pyruvate dehydrogenase multienzyme complex (Mr of 5-10 million) is assembled around a structural core formed of multiple copies of dihydrolipoyl acetyltransferase (E2p), which exhibits the shape of either a cube or a dodecahedron, depending on the source. The crystal structures of the 60-meric dihydrolipoyl acyltransferase cores of Bacillus stearothermophilus and Enterococcus faecalis pyruvate dehydrogenase complexes were determined and revealed a remarkably hollow dodecahedron with an outer diameter of approximately 237 A, 12 large openings of approximately 52 A diameter across the fivefold axes, and an inner cavity with a diameter of approximately 118 A. Comparison of cubic and dodecahedral E2p assemblies shows that combining the principles of quasi-equivalence formulated by Caspar and Klug [Caspar, D. L. & Klug, A. (1962) Cold Spring Harbor Symp. Quant. Biol. 27, 1-4] with strict Euclidean geometric considerations results in predictions of the major features of the E2p dodecahedron matching the observed features almost exactly.
PubMed: 9990008
DOI: 10.1073/pnas.96.4.1240
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (4.4 Å)
Structure validation

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