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- PDB-2q34: Crystal Structure of the ECH2 decarboxylase domain of CurF from L... -

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Basic information

Entry
Database: PDB / ID: 2q34
TitleCrystal Structure of the ECH2 decarboxylase domain of CurF from Lyngbya majuscula, rhombohedral crystal form
ComponentsCurF
KeywordsLYASE / CROTONASE
Function / homology
Function and homology information


3-hydroxyacyl-CoA dehydrogenase activity / DIM/DIP cell wall layer assembly / fatty acid synthase activity / phosphopantetheine binding / 3-oxoacyl-[acyl-carrier-protein] synthase activity / fatty acid biosynthetic process / nucleotide binding / identical protein binding / metal ion binding / plasma membrane / cytoplasm
Similarity search - Function
Light-harvesting Protein - #20 / Light-harvesting Protein / CurL-like, PKS C-terminal / Zinc-binding dehydrogenase / Enoyl-CoA hydratase/isomerase, conserved site / Enoyl-CoA hydratase/isomerase signature. / : / Polyketide synthase dehydratase N-terminal domain / Condensation domain / Condensation domain ...Light-harvesting Protein - #20 / Light-harvesting Protein / CurL-like, PKS C-terminal / Zinc-binding dehydrogenase / Enoyl-CoA hydratase/isomerase, conserved site / Enoyl-CoA hydratase/isomerase signature. / : / Polyketide synthase dehydratase N-terminal domain / Condensation domain / Condensation domain / Amino acid adenylation domain / Polyketide synthase, dehydratase domain / PKS_DH / : / Polyketide synthase dehydratase domain / Polyketide synthase, dehydratase domain superfamily / : / Polyketide and metazoan fatty acid synthase dehydratase (PKS/mFAS DH) domain profile. / PKS_PP_betabranch / Malonyl-CoA ACP transacylase, ACP-binding / Enoyl-CoA hydratase/isomerase / Enoyl-CoA hydratase/isomerase / : / Other non-globular / Acyl transferase / Acyl transferase domain / Acyl transferase domain in polyketide synthase (PKS) enzymes. / 2-enoyl-CoA Hydratase; Chain A, domain 1 / Acyl transferase domain superfamily / 2-enoyl-CoA Hydratase; Chain A, domain 1 / Acyl transferase/acyl hydrolase/lysophospholipase / AMP-binding enzyme, C-terminal domain / AMP-binding enzyme C-terminal domain / AMP-binding, conserved site / Chloramphenicol acetyltransferase-like domain superfamily / Putative AMP-binding domain signature. / Polyketide synthase, enoylreductase domain / Enoylreductase / Alcohol dehydrogenase, N-terminal / Alcohol dehydrogenase GroES-like domain / Polyketide synthase, phosphopantetheine-binding domain / Phosphopantetheine attachment site / Beta-ketoacyl synthase / Beta-ketoacyl synthase, active site / Ketosynthase family 3 (KS3) active site signature. / AMP-dependent synthetase/ligase / AMP-binding enzyme / Ketosynthase family 3 (KS3) domain profile. / Polyketide synthase, beta-ketoacyl synthase domain / Beta-ketoacyl synthase, N-terminal / Beta-ketoacyl synthase, C-terminal / Beta-ketoacyl synthase, N-terminal domain / Beta-ketoacyl synthase, C-terminal domain / AMP-binding enzyme, C-terminal domain superfamily / GroES-like superfamily / ClpP/crotonase-like domain superfamily / Thiolase-like / Phosphopantetheine attachment site / ACP-like superfamily / Carrier protein (CP) domain profile. / Phosphopantetheine binding ACP domain / Special / NAD(P)-binding domain superfamily / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
Biological speciesLyngbya majuscula (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.85 Å
AuthorsGeders, T.W. / Mowers, J.C. / Smith, J.L.
CitationJournal: J.Biol.Chem. / Year: 2007
Title: Crystal structure of the ECH2 catalytic domain of CurF from Lyngbya majuscula. Insights into a decarboxylase involved in polyketide chain beta-branching.
Authors: Geders, T.W. / Gu, L. / Mowers, J.C. / Liu, H. / Gerwick, W.H. / Hakansson, K. / Sherman, D.H. / Smith, J.L.
History
DepositionMay 29, 2007Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 9, 2007Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Derived calculations / Source and taxonomy / Version format compliance
Revision 1.2Oct 18, 2017Group: Refinement description / Category: software
Item: _software.classification / _software.contact_author ..._software.classification / _software.contact_author / _software.contact_author_email / _software.date / _software.language / _software.location / _software.name / _software.type / _software.version
Revision 1.3Aug 30, 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 / pdbx_initial_refinement_model / struct_conn / struct_ref_seq_dif
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_leaving_atom_flag / _struct_ref_seq_dif.details
Revision 1.4Nov 15, 2023Group: Data collection / Category: chem_comp_atom / chem_comp_bond / Item: _chem_comp_atom.atom_id / _chem_comp_bond.atom_id_2

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: CurF


Theoretical massNumber of molelcules
Total (without water)27,0991
Polymers27,0991
Non-polymers00
Water3,315184
1
A: CurF

A: CurF

A: CurF


Theoretical massNumber of molelcules
Total (without water)81,2983
Polymers81,2983
Non-polymers00
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-y,x-y,z1
crystal symmetry operation3_555-x+y,-x,z1
Buried area6050 Å2
ΔGint-32 kcal/mol
Surface area29830 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)106.241, 106.241, 118.496
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number155
Space group name H-MH32
Components on special symmetry positions
IDModelComponents
11A-427-

HOH

DetailsThe biological assembly is a trimer generated from the monomer in the asymmetric unit by the operations: -y,x-y,z and -x+y,-x,z.

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Components

#1: Protein CurF


Mass: 27099.365 Da / Num. of mol.: 1 / Fragment: ECH2 decarboxylase domain
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Lyngbya majuscula (bacteria) / Strain: 19L / Gene: curF / Plasmid: pMCSG7:CurFd17 / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: Q6DNE7
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 184 / 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: 48.19 %
Crystal growTemperature: 277.15 K / Method: vapor diffusion, hanging drop / pH: 7.15
Details: 1.5M sodium malonate pH 7.0, 50 mM HEPES pH 6.8, 20 mM Tris pH 7.9, 500 mM NaCl, 10% glycerol, pH 7.15, VAPOR DIFFUSION, HANGING DROP, temperature 277.15K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 23-ID-B / Wavelength: 1.0332 Å
DetectorType: MARMOSAIC 300 mm CCD / Detector: CCD / Date: Dec 7, 2006
Details: K-B pair of biomorph mirrors for vertical and horizontal focusing
RadiationMonochromator: double crystal monochromator / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.0332 Å / Relative weight: 1
ReflectionResolution: 1.85→50 Å / Num. all: 22275 / Num. obs: 22275 / % possible obs: 100 % / Observed criterion σ(F): 1 / Observed criterion σ(I): 1 / Redundancy: 11 % / Biso Wilson estimate: 25.6 Å2 / Rmerge(I) obs: 0.072 / Χ2: 1.005 / Net I/σ(I): 15.5
Reflection shellResolution: 1.85→1.92 Å / Redundancy: 10.3 % / Rmerge(I) obs: 0.568 / Mean I/σ(I) obs: 4.3 / Num. unique all: 2199 / Χ2: 1.01 / % possible all: 100

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Phasing

Phasing MR
Highest resolutionLowest resolution
Rotation2.5 Å36.34 Å
Translation2.5 Å36.34 Å

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Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACT2data extraction
Blu-Icedata collection
HKL-2000data reduction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2Q2X

2q2x


Resolution: 1.85→36.34 Å / Cor.coef. Fo:Fc: 0.967 / Cor.coef. Fo:Fc free: 0.953 / SU B: 5.193 / SU ML: 0.079 / Isotropic thermal model: Isotropic / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.128 / ESU R Free: 0.121 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.206 1140 5.1 %RANDOM
Rwork0.169 ---
obs0.171 22268 99.41 %-
all-22275 --
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 22.787 Å2
Baniso -1Baniso -2Baniso -3
1--1.02 Å2-0.51 Å20 Å2
2---1.02 Å20 Å2
3---1.53 Å2
Refinement stepCycle: LAST / Resolution: 1.85→36.34 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1895 0 0 184 2079
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0120.0221928
X-RAY DIFFRACTIONr_angle_refined_deg1.2491.9712602
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.0195242
X-RAY DIFFRACTIONr_dihedral_angle_2_deg34.1224.71387
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.42815345
X-RAY DIFFRACTIONr_dihedral_angle_4_deg19.11510
X-RAY DIFFRACTIONr_chiral_restr0.090.2293
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.021446
X-RAY DIFFRACTIONr_nbd_refined0.2080.2891
X-RAY DIFFRACTIONr_nbtor_refined0.3090.21356
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1280.2143
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2250.261
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.180.220
X-RAY DIFFRACTIONr_mcbond_it1.2221237
X-RAY DIFFRACTIONr_mcangle_it2.01331933
X-RAY DIFFRACTIONr_scbond_it4.5996770
X-RAY DIFFRACTIONr_scangle_it6.9129669
LS refinement shellResolution: 1.85→1.891 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.279 87 -
Rwork0.21 1435 -
obs-1522 92.64 %

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