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- PDB-1lrj: Crystal Structure of E. coli UDP-Galactose 4-Epimerase Complexed ... -

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Basic information

Entry
Database: PDB / ID: 1lrj
TitleCrystal Structure of E. coli UDP-Galactose 4-Epimerase Complexed with UDP-N-Acetylglucosamine
ComponentsUDP-glucose 4-epimerase
KeywordsISOMERASE / epimerase / short chain dehydrogenase / galactosemia
Function / homology
Function and homology information


monosaccharide metabolic process / colanic acid biosynthetic process / racemase and epimerase activity, acting on carbohydrates and derivatives / UDP-glucose 4-epimerase / UDP-glucose 4-epimerase activity / galactose catabolic process via UDP-galactose, Leloir pathway / galactose metabolic process / NAD+ binding / carbohydrate metabolic process / identical protein binding ...monosaccharide metabolic process / colanic acid biosynthetic process / racemase and epimerase activity, acting on carbohydrates and derivatives / UDP-glucose 4-epimerase / UDP-glucose 4-epimerase activity / galactose catabolic process via UDP-galactose, Leloir pathway / galactose metabolic process / NAD+ binding / carbohydrate metabolic process / identical protein binding / cytoplasm / cytosol
Similarity search - Function
UDP-glucose 4-epimerase / UDP-galactose 4-epimerase, domain 1 / UDP-galactose 4-epimerase; domain 1 / NAD-dependent epimerase/dehydratase / NAD dependent epimerase/dehydratase family / NAD(P)-binding Rossmann-like Domain / NAD(P)-binding domain superfamily / Alpha-Beta Complex / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
NICOTINAMIDE-ADENINE-DINUCLEOTIDE / TRIETHYLENE GLYCOL / URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE / UDP-glucose 4-epimerase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.9 Å
AuthorsThoden, J.B. / Henderson, J.M. / Fridovich-Keil, J.L. / Holden, H.M.
CitationJournal: J.Biol.Chem. / Year: 2002
Title: Structural analysis of the Y299C mutant of Escherichia coli UDP-galactose 4-epimerase. Teaching an old dog new tricks.
Authors: Thoden, J.B. / Henderson, J.M. / Fridovich-Keil, J.L. / Holden, H.M.
History
DepositionMay 15, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 26, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Nov 16, 2011Group: Atomic model
Revision 1.4Oct 11, 2017Group: Refinement description / Category: software
Revision 1.5Feb 14, 2024Group: 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 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / 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 / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _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: UDP-glucose 4-epimerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)38,7616
Polymers37,2941
Non-polymers1,4675
Water7,548419
1
A: UDP-glucose 4-epimerase
hetero molecules

A: UDP-glucose 4-epimerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)77,52212
Polymers74,5882
Non-polymers2,93410
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation5_555x-y,-y,-z+1/31
Buried area7280 Å2
ΔGint-69 kcal/mol
Surface area25320 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)83.200, 83.200, 108.300
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number154
Cell settingtrigonal
Space group name H-MP3221
Components on special symmetry positions
IDModelComponents
11A-345-

HOH

21A-348-

HOH

31A-349-

HOH

41A-354-

HOH

51A-563-

HOH

61A-647-

HOH

DetailsThe biologial assembly is a homodimer. One independent subunit sits on a crystallographic 2-fold axis. Matrix to generate the second half of the dimer is: 1 0 0 0 -1 0 0 0 -1 0.0 0.0 36.1

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Components

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Protein , 1 types, 1 molecules A

#1: Protein UDP-glucose 4-epimerase / E.C.5.1.3.2 / UDP-galactose-4-epimerase / Galactowaldenase / UDP-galactose 4-epimerase / UDPglucose 4-epimerase


Mass: 37294.016 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: GALE / Plasmid: pTZSynE / Production host: Escherichia coli (E. coli) / Variant (production host): Bl21(DE3)pLysS / References: UniProt: P09147, UDP-glucose 4-epimerase

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Non-polymers , 5 types, 424 molecules

#2: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Na
#3: Chemical ChemComp-NAD / NICOTINAMIDE-ADENINE-DINUCLEOTIDE


Mass: 663.425 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H27N7O14P2 / Comment: NAD*YM
#4: Chemical ChemComp-UD1 / URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE


Mass: 607.354 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C17H27N3O17P2
#5: Chemical ChemComp-PGE / TRIETHYLENE GLYCOL


Mass: 150.173 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H14O4
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 419 / 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: 2.9 Å3/Da / Density % sol: 57.58 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 8
Details: PEG 8000, NaCl, HEPES, UDP-N-acetylglucosamine, pH 8.0, VAPOR DIFFUSION, HANGING DROP at 277K
Crystal grow
*PLUS
Temperature: 4 ℃
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
110 mMpotassium phosphate1droppH8.0
225 mg/mlprotein1drop
315-19 %PEG80001reservoir
4200 mM1reservoirNaCl
5100 mMHEPES1reservoirpH7.5

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Data collection

DiffractionMean temperature: 115 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å
DetectorType: SIEMENS HI-STAR / Detector: AREA DETECTOR / Date: Nov 28, 2001 / Details: Supper mirrors
RadiationMonochromator: Ni filter / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.75→30 Å / Num. all: 42024 / Num. obs: 42024 / % possible obs: 92.3 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.3 % / Rsym value: 0.048 / Net I/σ(I): 17
Reflection shellResolution: 1.75→1.83 Å / Redundancy: 1.8 % / Mean I/σ(I) obs: 2 / Num. unique all: 4851 / Rsym value: 0.356 / % possible all: 81.4
Reflection
*PLUS
Rmerge(I) obs: 0.048
Reflection shell
*PLUS
% possible obs: 81.4 % / Num. unique obs: 4851 / Rmerge(I) obs: 0.356

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Processing

Software
NameClassification
AMoREphasing
TNTrefinement
FEAMBOdata reduction
SAINTdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1EK6

1ek6


Resolution: 1.9→30 Å / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.268 3370 -random
Rwork0.192 ---
all0.195 33734 --
obs0.195 33734 93.4 %-
Refinement stepCycle: LAST / Resolution: 1.9→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2625 0 95 419 3139
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONt_bond_d0.016
X-RAY DIFFRACTIONt_angle_deg2.37
Software
*PLUS
Name: TNT / Version: 5F / Classification: refinement
Refinement
*PLUS
Num. reflection obs: 30364 / Rfactor all: 0.195 / Rfactor Rfree: 0.268 / Rfactor Rwork: 0.192
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONt_dihedral_angle_d
X-RAY DIFFRACTIONt_dihedral_angle_deg16.5
X-RAY DIFFRACTIONt_planar_d0.006
X-RAY DIFFRACTIONt_plane_restr0.016

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