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- PDB-3pyj: Reduced sweetness of a monellin (MNEI) mutant results from increa... -

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Basic information

Entry
Database: PDB / ID: 3pyj
TitleReduced sweetness of a monellin (MNEI) mutant results from increased protein flexibility and disruption of a distant poly-(L-proline) II helix
ComponentsMonellin chain B/Monellin chain A chimeric protein
KeywordsPLANT PROTEIN / poly-(L-proline) II helix / sweet protein
Function / homology
Function and homology information


Monellin, A chain / Monellin, A chain superfamily / Monellin, B chain / : / Monellin / Monellin / Nuclear Transport Factor 2; Chain: A, - #10 / Cystatin superfamily / Nuclear Transport Factor 2; Chain: A, / Roll / Alpha Beta
Similarity search - Domain/homology
FORMIC ACID / Monellin chain A / Monellin chain B
Similarity search - Component
Biological speciesDioscoreophyllum cumminsii (serendipity berry)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2 Å
AuthorsHobbs, J.R. / Conn, G.C. / Munger, S.D. / Templeton, C.M.
CitationJournal: Chem Senses / Year: 2011
Title: Reduced Sweetness of a Monellin (MNEI) Mutant Results from Increased Protein Flexibility and Disruption of a Distant Poly-(L-Proline) II Helix.
Authors: Templeton, C.M. / Ostovar Pour, S. / Hobbs, J.R. / Blanch, E.W. / Munger, S.D. / Conn, G.L.
History
DepositionDec 13, 2010Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 6, 2011Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Aug 2, 2017Group: Refinement description / Source and taxonomy / Category: entity_src_gen / software
Revision 1.3Feb 21, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / 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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Monellin chain B/Monellin chain A chimeric protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)11,4792
Polymers11,4331
Non-polymers461
Water1,09961
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)48.666, 48.666, 114.773
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number92
Space group name H-MP41212

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Components

#1: Protein Monellin chain B/Monellin chain A chimeric protein / Monellin chain II / Monellin chain I


Mass: 11433.075 Da / Num. of mol.: 1 / Mutation: G16A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Dioscoreophyllum cumminsii (serendipity berry)
Plasmid: pET22b / Production host: Escherichia coli (E. coli) / References: UniProt: P02882, UniProt: P02881
#2: Chemical ChemComp-FMT / FORMIC ACID


Mass: 46.025 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: CH2O2
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 61 / 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: 3.01 Å3/Da / Density % sol: 59.09 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 5.5
Details: 3.6 M sodium formate and 10% v/v glycerol, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID14-2 / Wavelength: 1
DetectorDate: Oct 1, 2004
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2→37.12 Å / Num. obs: 9968 / % possible obs: 100 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2

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Processing

Software
NameVersionClassification
ADSCQuantumdata collection
AMoREphasing
REFMAC5.2.0005refinement
MOSFLMdata reduction
PROTEUM PLUSPLUSdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2→44.81 Å / Cor.coef. Fo:Fc: 0.926 / Cor.coef. Fo:Fc free: 0.91 / SU B: 6.925 / SU ML: 0.106 / Cross valid method: THROUGHOUT / ESU R Free: 0.174 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.27022 969 9.8 %RANDOM
Rwork0.23111 ---
obs0.23492 8942 99.93 %-
all-9968 --
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: 35.192 Å2
Baniso -1Baniso -2Baniso -3
1--0.21 Å20 Å20 Å2
2---0.21 Å20 Å2
3---0.43 Å2
Refinement stepCycle: LAST / Resolution: 2→44.81 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms799 0 3 61 863
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0180.022821
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.6641.9761104
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.738595
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.76623.48843
X-RAY DIFFRACTIONr_dihedral_angle_3_deg16.76215147
X-RAY DIFFRACTIONr_dihedral_angle_4_deg21.623157
X-RAY DIFFRACTIONr_chiral_restr0.1310.2110
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.02639
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.2150.2319
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.3120.2538
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1770.271
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.170.239
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1840.29
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it1.411.5498
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it2.0252773
X-RAY DIFFRACTIONr_scbond_it2.9243377
X-RAY DIFFRACTIONr_scangle_it4.5764.5331
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2→2.052 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.235 68 -
Rwork0.199 634 -
obs--100 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL11 (°2)L12 (°2)L13 (°2)L22 (°2)L23 (°2)L33 (°2)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T11 (Å2)T12 (Å2)T13 (Å2)T22 (Å2)T23 (Å2)T33 (Å2)Origin x (Å)Origin y (Å)Origin z (Å)
15.40531.0458-1.21431.1145-0.59571.56920.0023-0.31280.22210.0233-0.02360.0437-0.0689-0.03520.0213-0.08310.01720.00490.04370.0455-0.05980.5754-7.6711-16.6187
25.19480.63291.37080.76330.02480.7440.0714-0.10410.3810.0538-0.0740.0205-0.0438-0.07490.0026-0.09490.00610.02860.03930.0275-0.04132.7466-3.9177-17.5143
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A1 - 46
2X-RAY DIFFRACTION2A54 - 96

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