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- PDB-2ivm: Crystal structure of a transcriptional regulator -

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Basic information

Entry
Database: PDB / ID: 2ivm
TitleCrystal structure of a transcriptional regulator
ComponentsTRANSCRIPTIONAL REGULATORY PROTEIN
KeywordsTRANSCRIPTION / TRANSCRIPTIONAL REGULATOR
Function / homology
Function and homology information


amino acid binding / response to amino acid / protein homooligomerization / sequence-specific DNA binding / DNA binding / cytosol
Similarity search - Function
AsnC-type HTH domain profile. / Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain / AsnC-type HTH domain / Transcription regulator AsnC-like / helix_turn_helix ASNC type / Transcription regulator AsnC/Lrp, ligand binding domain / Lrp/AsnC ligand binding domain / Winged helix-turn-helix DNA-binding / Dimeric alpha-beta barrel / Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain ...AsnC-type HTH domain profile. / Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain / AsnC-type HTH domain / Transcription regulator AsnC-like / helix_turn_helix ASNC type / Transcription regulator AsnC/Lrp, ligand binding domain / Lrp/AsnC ligand binding domain / Winged helix-turn-helix DNA-binding / Dimeric alpha-beta barrel / Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain / Arc Repressor Mutant, subunit A / Winged helix DNA-binding domain superfamily / Alpha-Beta Plaits / Winged helix-like DNA-binding domain superfamily / 2-Layer Sandwich / Orthogonal Bundle / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Leucine-responsive regulatory protein
Similarity search - Component
Biological speciesMYCOBACTERIUM TUBERCULOSIS (bacteria)
MethodX-RAY DIFFRACTION / MIRAS / Resolution: 2.5 Å
AuthorsShrivastava, T. / Ramachandran, R.
CitationJournal: Nucleic Acids Res. / Year: 2007
Title: Mechanistic Insights from the Crystal Structures of a Feast/Famine Regulatory Protein from Mycobacterium Tuberculosis H37Rv.
Authors: Shrivastava, T. / Ramachandran, R.
History
DepositionJun 14, 2006Deposition site: PDBE / Processing site: PDBE
Revision 1.0Oct 9, 2007Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3May 8, 2024Group: Data collection / Database references / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.status_code_sf
Remark 700 SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AB" IN EACH CHAIN ON SHEET RECORDS BELOW ... SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AB" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 8-STRANDED BARREL THIS IS REPRESENTED BY A 9-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: TRANSCRIPTIONAL REGULATORY PROTEIN
B: TRANSCRIPTIONAL REGULATORY PROTEIN


Theoretical massNumber of molelcules
Total (without water)33,0332
Polymers33,0332
Non-polymers00
Water72140
1
A: TRANSCRIPTIONAL REGULATORY PROTEIN
B: TRANSCRIPTIONAL REGULATORY PROTEIN

A: TRANSCRIPTIONAL REGULATORY PROTEIN
B: TRANSCRIPTIONAL REGULATORY PROTEIN

A: TRANSCRIPTIONAL REGULATORY PROTEIN
B: TRANSCRIPTIONAL REGULATORY PROTEIN

A: TRANSCRIPTIONAL REGULATORY PROTEIN
B: TRANSCRIPTIONAL REGULATORY PROTEIN


Theoretical massNumber of molelcules
Total (without water)132,1338
Polymers132,1338
Non-polymers00
Water1448
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-x,-y,z1
crystal symmetry operation7_555y,x,-z1
crystal symmetry operation8_555-y,-x,-z1
Buried area36310 Å2
ΔGint-173.5 kcal/mol
Surface area61460 Å2
MethodPQS
Unit cell
Length a, b, c (Å)100.827, 100.827, 99.503
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number94
Space group name H-MP42212

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Components

#1: Protein TRANSCRIPTIONAL REGULATORY PROTEIN / FEAST OR FAMINE REGULATORY PROTEIN


Mass: 16516.570 Da / Num. of mol.: 2 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) MYCOBACTERIUM TUBERCULOSIS (bacteria) / Strain: H37RV / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: P96896
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 40 / Source method: isolated from a natural source / Formula: H2O
Compound detailsENGINEERED RESIDUE IN CHAIN A, ALA 22 TO GLY ENGINEERED RESIDUE IN CHAIN B, ALA 22 TO GLY
Sequence detailsA22G MUTATION INTRODUCED WHILE CLONING

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 3.96 Å3/Da / Density % sol: 68.73 %
Crystal growpH: 6.5 / Details: pH 6.5

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Data collection

DiffractionMean temperature: 298 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Details: MIRRORS
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.5→30 Å / Num. obs: 18352 / % possible obs: 99.9 % / Observed criterion σ(I): 2 / Redundancy: 9.1 % / Rmerge(I) obs: 0.1 / Net I/σ(I): 19.2
Reflection shellResolution: 2.5→2.64 Å / Redundancy: 9.2 % / Rmerge(I) obs: 0.65 / Mean I/σ(I) obs: 4.5 / % possible all: 100

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Processing

Software
NameVersionClassification
REFMAC5.2.0005refinement
MOSFLMdata reduction
SCALAdata scaling
SOLVEphasing
RefinementMethod to determine structure: MIRAS / Resolution: 2.5→30.07 Å / Cor.coef. Fo:Fc: 0.935 / Cor.coef. Fo:Fc free: 0.898 / SU B: 6.57 / SU ML: 0.149 / Cross valid method: THROUGHOUT / ESU R: 0.267 / ESU R Free: 0.236 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
RfactorNum. reflection% reflectionSelection details
Rfree0.255 932 5.1 %RANDOM
Rwork0.199 ---
obs0.201 17295 99.5 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 39.41 Å2
Baniso -1Baniso -2Baniso -3
1-0.43 Å20 Å20 Å2
2--0.43 Å20 Å2
3----0.86 Å2
Refinement stepCycle: LAST / Resolution: 2.5→30.07 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2238 0 0 40 2278
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0260.0222266
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg2.5841.9753085
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg8.5865292
X-RAY DIFFRACTIONr_dihedral_angle_2_deg39.60322.427103
X-RAY DIFFRACTIONr_dihedral_angle_3_deg23.87315370
X-RAY DIFFRACTIONr_dihedral_angle_4_deg21.431530
X-RAY DIFFRACTIONr_chiral_restr0.2390.2376
X-RAY DIFFRACTIONr_gen_planes_refined0.0090.021714
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.2330.2810
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.3190.21542
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.2030.276
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2220.229
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.5890.24
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it1.4641.51509
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it2.44522361
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it4.2833831
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it7.2234.5724
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.5→2.56 Å / Total num. of bins used: 20 /
RfactorNum. reflection
Rfree0.388 77
Rwork0.31 1240

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