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- PDB-1c8l: SYNERGISTIC INHIBITION OF GLYCOGEN PHOSPHORYLASE A BY A POTENTIAL... -

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Basic information

Entry
Database: PDB / ID: 1c8l
TitleSYNERGISTIC INHIBITION OF GLYCOGEN PHOSPHORYLASE A BY A POTENTIAL ANTIDIABETIC DRUG AND CAFFEINE
ComponentsPROTEIN (GLYCOGEN PHOSPHORYLASE)
KeywordsTRANSFERASE / GLYCOGEN METABOLISM / DIABETES / PHOSPHORYLASE A / SYNERGISTIC INHIBITION / ALLOSTERIC SITE / INHIBITOR SITE
Function / homology
Function and homology information


glycogen phosphorylase / glycogen phosphorylase activity / glycogen catabolic process / skeletal muscle myofibril / pyridoxal phosphate binding / nucleotide binding
Similarity search - Function
Glycosyl transferase, family 35 / Glycogen/starch/alpha-glucan phosphorylase / Phosphorylase pyridoxal-phosphate attachment site / Carbohydrate phosphorylase / Phosphorylase pyridoxal-phosphate attachment site. / Glycogen Phosphorylase B; / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Chem-BIN / CAFFEINE / PYRIDOXAL-5'-PHOSPHATE / Glycogen phosphorylase, muscle form
Similarity search - Component
Biological speciesOryctolagus cuniculus (rabbit)
MethodX-RAY DIFFRACTION / SYNCHROTRON / OTHER / Resolution: 2.3 Å
AuthorsTsitsanou, K.E. / Skamnaki, V.T. / Oikonomakos, N.G.
Citation
Journal: Arch.Biochem.Biophys. / Year: 2000
Title: Structural basis of the synergistic inhibition of glycogen phosphorylase a by caffeine and a potential antidiabetic drug.
Authors: Tsitsanou, K.E. / Skamnaki, V.T. / Oikonomakos, N.G.
#1: Journal: Protein Sci. / Year: 1999
Title: Allosteric Inhibition of Glycogen Phosphorylase a by the Potential Antidiabetic Drug 3-Isopropyl 4-(2-Chlorophenyl)-1,4-Dihydro-1-Ethyl-2-Methyl-Pyridine-3,5,6-Tricarboxylate
Authors: Oikonomakos, N.G. / Tsitsanou, K.E. / Zographos, S.E. / Skamnaki, V.T. / Goldmann, S. / Bischoff, H.
#2: Journal: Structure / Year: 1997
Title: The Structure of Glycogen Phosphorylase B with an Alkyl-Dihydropyridine-Dicarboxylic Acid Compound, a Novel and Potent Inhibitor
Authors: Zographos, S.E. / Oikonomakos, N.G. / Tsitsanou, K.E. / Leonidas, D.D. / Chrysina, E.D. / Skamnaki, V.T. / Bischoff, H. / Goldmann, S. / Watson, K.A. / Johnson, L.N.
History
DepositionMay 16, 2000Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 31, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 26, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Aug 9, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / diffrn_source / pdbx_initial_refinement_model / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _diffrn_source.pdbx_synchrotron_site / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: PROTEIN (GLYCOGEN PHOSPHORYLASE)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)98,3115
Polymers97,3711
Non-polymers9404
Water12,683704
1
A: PROTEIN (GLYCOGEN PHOSPHORYLASE)
hetero molecules

A: PROTEIN (GLYCOGEN PHOSPHORYLASE)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)196,62310
Polymers194,7422
Non-polymers1,8818
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation7_556y,x,-z+11
Buried area10930 Å2
ΔGint-40 kcal/mol
Surface area55510 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)126.690, 126.690, 115.300
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number96
Space group name H-MP43212

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Components

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Protein , 1 types, 1 molecules A

#1: Protein PROTEIN (GLYCOGEN PHOSPHORYLASE)


Mass: 97371.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Oryctolagus cuniculus (rabbit) / Tissue: MUSCLE / References: UniProt: P00489, glycogen phosphorylase

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Non-polymers , 5 types, 708 molecules

#2: Chemical ChemComp-PLP / PYRIDOXAL-5'-PHOSPHATE / VITAMIN B6 Phosphate


Mass: 247.142 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H10NO6P
#3: Chemical ChemComp-BIN / 2,3-DICARBOXY-4-(2-CHLORO-PHENYL)-1-ETHYL-5-ISOPROPOXYCARBONYL-6-METHYL-PYRIDINIUM


Mass: 406.837 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C20H21ClNO6
#4: Chemical ChemComp-CFF / CAFFEINE / 3,7-DIHYDRO-1,3,7-TRIMETHYL-1H-PURINE-2,6-DIONE


Mass: 194.191 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H10N4O2 / Comment: medication*YM
#5: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 704 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.37 Å3/Da / Density % sol: 48 %
Crystal growpH: 6.7 / Details: pH 6.70
Crystal grow
*PLUS
Method: unknown
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
129.1 mg/mlenzyme11
20.9 mMW180711
34.9 mMcaffeine11
43 mMdithiothreitol11
510 mMBES11
60.1 mMEDTA11
70.02 %sodium azide11

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: EMBL/DESY, HAMBURG / Beamline: X11 / Wavelength: 0.928
DetectorDetector: IMAGE PLATE / Date: Apr 15, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.928 Å / Relative weight: 1
ReflectionResolution: 2.3→26.5 Å / Num. obs: 41698 / % possible obs: 98.4 % / Redundancy: 4.4 % / Rmerge(I) obs: 0.078 / Net I/σ(I): 10.5
Reflection shellResolution: 2.3→2.34 Å / Rmerge(I) obs: 0.375 / Mean I/σ(I) obs: 2.6 / % possible all: 98.5
Reflection
*PLUS
Num. measured all: 183590
Reflection shell
*PLUS
% possible obs: 98.5 %

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Processing

Software
NameVersionClassification
X-PLORmodel building
X-PLOR3.8refinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing
RefinementMethod to determine structure: OTHER
Starting model: 3AMV

3amv


Resolution: 2.3→26.5 Å / Cross valid method: R FREE / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.257 -5 %RANDOM
Rwork0.21 ---
obs0.21 39461 98.4 %-
Refinement stepCycle: LAST / Resolution: 2.3→26.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6611 0 63 704 7378
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.007
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.38
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d24.4
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d0.73
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it1.5
X-RAY DIFFRACTIONx_mcangle_it2
X-RAY DIFFRACTIONx_scbond_it1.5
X-RAY DIFFRACTIONx_scangle_it2
Software
*PLUS
Name: X-PLOR / Version: 3.8 / Classification: refinement
Refinement
*PLUS
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 28.8 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg24.4
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg0.73

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