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Basic information

Entry
Database: PDB / ID: 2nxg
TitleStructural and mechanistic changes along an engineered path from metallo to non-metallo KDO8P synthase.
Components2-dehydro-3-deoxyphosphooctonate aldolase
KeywordsTRANSFERASE / KDO / KDO8P / KDO8PS / PEP / A5P
Function / homology
Function and homology information


monosaccharide biosynthetic process / 3-deoxy-8-phosphooctulonate synthase / 3-deoxy-8-phosphooctulonate synthase activity / keto-3-deoxy-D-manno-octulosonic acid biosynthetic process / cytosol
Similarity search - Function
3-deoxy-8-phosphooctulonate synthase / DAHP synthetase I/KDSA / DAHP synthetase I family / Aldolase class I / Aldolase-type TIM barrel / TIM Barrel / Alpha-Beta Barrel / Alpha Beta
Similarity search - Domain/homology
Chem-1NT / ARABINOSE-5-PHOSPHATE / PHOSPHOENOLPYRUVATE / 2-dehydro-3-deoxyphosphooctonate aldolase
Similarity search - Component
Biological speciesAquifex aeolicus (bacteria)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.95 Å
AuthorsKona, F. / Xu, X. / Martin, P. / Kuzmic, P. / Gatti, D.L.
CitationJournal: Biochemistry / Year: 2007
Title: Structural and Mechanistic Changes along an Engineered Path from Metallo to Nonmetallo 3-Deoxy-d-manno-octulosonate 8-Phosphate Synthases.
Authors: Kona, F. / Xu, X. / Martin, P. / Kuzmic, P. / Gatti, D.L.
History
DepositionNov 17, 2006Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 24, 2007Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Oct 20, 2021Group: Database references / Derived calculations / Category: database_2 / 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 / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Aug 30, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 2-dehydro-3-deoxyphosphooctonate aldolase
B: 2-dehydro-3-deoxyphosphooctonate aldolase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)59,3805
Polymers58,5632
Non-polymers8163
Water3,999222
1
A: 2-dehydro-3-deoxyphosphooctonate aldolase
B: 2-dehydro-3-deoxyphosphooctonate aldolase
hetero molecules

A: 2-dehydro-3-deoxyphosphooctonate aldolase
B: 2-dehydro-3-deoxyphosphooctonate aldolase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)118,76010
Polymers117,1274
Non-polymers1,6336
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation4_555y,x,-z1
Buried area16450 Å2
ΔGint-81 kcal/mol
Surface area33230 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)84.155, 84.155, 160.647
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein 2-dehydro-3-deoxyphosphooctonate aldolase / Phospho-2- dehydro-3-deoxyoctonate aldolase / 3-deoxy-D-manno-octulosonic acid 8- phosphate ...Phospho-2- dehydro-3-deoxyoctonate aldolase / 3-deoxy-D-manno-octulosonic acid 8- phosphate synthetase / KDO-8-phosphate synthetase / KDO 8-P synthase / KDOPS


Mass: 29281.732 Da / Num. of mol.: 2 / Mutation: C1011N, S1235P, Q1237A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Aquifex aeolicus (bacteria) / Gene: kdsA / Production host: Escherichia coli (E. coli)
References: UniProt: O66496, 3-deoxy-8-phosphooctulonate synthase
#2: Chemical ChemComp-PEP / PHOSPHOENOLPYRUVATE


Mass: 168.042 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H5O6P
#3: Chemical ChemComp-A5P / ARABINOSE-5-PHOSPHATE


Mass: 232.126 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C5H13O8P
#4: Chemical ChemComp-1NT / (2R,4R,5R,6R,7R)-2,4,5,6,7-PENTAHYDROXY-2,8-BIS(PHOSPHONOOXY)OCTANOIC ACID


Mass: 416.167 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H18O15P2
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 222 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.8 Å3/Da / Density % sol: 56.12 %

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Data collection

Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU / Wavelength: 1.5418 Å
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.95→25.1 Å / Num. all: 48756 / Num. obs: 41922 / % possible obs: 0.86 % / Observed criterion σ(F): 5.3 / Observed criterion σ(I): 2.3 / Redundancy: 9.2 % / Biso Wilson estimate: 29 Å2 / Rmerge(I) obs: 0.074 / Rsym value: 0.074 / Net I/σ(I): 25.5

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Processing

SoftwareName: CNS / Version: 1.1 / Classification: refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB Entry 1FWN

1fwn


Resolution: 1.95→25.13 Å / Rfactor Rfree error: 0.004 / Data cutoff high absF: 1359139.56 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.243 4244 10.1 %RANDOM
Rwork0.209 ---
obs0.209 41922 85.9 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 51.7294 Å2 / ksol: 0.340916 e/Å3
Displacement parametersBiso mean: 46.6 Å2
Baniso -1Baniso -2Baniso -3
1-8.54 Å27.92 Å20 Å2
2--8.54 Å20 Å2
3----17.09 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.31 Å0.27 Å
Luzzati d res low-5 Å
Luzzati sigma a0.34 Å0.31 Å
Refinement stepCycle: LAST / Resolution: 1.95→25.13 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4078 0 49 222 4349
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d22.6
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.84
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.41.5
X-RAY DIFFRACTIONc_mcangle_it2.22
X-RAY DIFFRACTIONc_scbond_it2.082
X-RAY DIFFRACTIONc_scangle_it3.022.5
LS refinement shellResolution: 1.95→2.07 Å / Rfactor Rfree error: 0.022 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.401 319 9.8 %
Rwork0.365 2944 -
obs--40.9 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2ion.paramion.top
X-RAY DIFFRACTION3a5p_prodrg.parama5p_prodrg.toph
X-RAY DIFFRACTION4water_rep.paramwater.top
X-RAY DIFFRACTION5pep_int_prodrg_mopep_int_prodrg.to

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