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- PDB-1rir: Crystal structure of meso-tetrasulphonatophenylporphyrin in compl... -

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Basic information

Entry
Database: PDB / ID: 1rir
TitleCrystal structure of meso-tetrasulphonatophenylporphyrin in complex with Peanut lectin.
ComponentsGalactose-binding lectin
KeywordsSUGAR BINDING PROTEIN
Function / homology
Function and homology information


carbohydrate binding / metal ion binding
Similarity search - Function
Legume lectin / Legume lectin, alpha chain, conserved site / Legume lectins alpha-chain signature. / Legume lectins beta-chain signature. / Legume lectin domain / Legume lectin domain / Legume lectin, beta chain, Mn/Ca-binding site / : / Jelly Rolls - #200 / Concanavalin A-like lectin/glucanase domain superfamily ...Legume lectin / Legume lectin, alpha chain, conserved site / Legume lectins alpha-chain signature. / Legume lectins beta-chain signature. / Legume lectin domain / Legume lectin domain / Legume lectin, beta chain, Mn/Ca-binding site / : / Jelly Rolls - #200 / Concanavalin A-like lectin/glucanase domain superfamily / Jelly Rolls / Sandwich / Mainly Beta
Similarity search - Domain/homology
: / Chem-SFP / Galactose-binding lectin
Similarity search - Component
Biological speciesArachis hypogaea (peanut)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.9 Å
AuthorsGoel, M. / Kaur, K.J. / Maiya, B.G. / Swamy, M.J. / Salunke, D.M.
Citation
Journal: Biochemistry / Year: 2005
Title: Crystal structures of the PNA-porphyrin complex in the presence and absence of lactose: mapping the conformational changes on lactose binding, interacting surfaces, and supramolecular aggregations.
Authors: Goel, M. / Damai, R.S. / Sethi, D.K. / Kaur, K.J. / Maiya, B.G. / Swamy, M.J. / Salunke, D.M.
#1: Journal: J.Biol.Chem. / Year: 2001
Title: Functional equality in the absence of structural similarity: an added dimension to molecular mimicry.
Authors: Goel, M. / Jain, D. / Kaur, K.J. / Kenoth, R. / Maiya, B.G. / Swamy, M.J. / Salunke, D.M.
History
DepositionNov 17, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 28, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 23, 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 / pdbx_struct_conn_angle / struct_conn / 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_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_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_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

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Assembly

Deposited unit
A: Galactose-binding lectin
B: Galactose-binding lectin
C: Galactose-binding lectin
D: Galactose-binding lectin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)111,54523
Polymers100,8364
Non-polymers10,70919
Water1,09961
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)94.8, 94.8, 144.0
Angle α, β, γ (deg.)90.0, 90.0, 120.0
Int Tables number145
Space group name H-MP32

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Components

#1: Protein
Galactose-binding lectin / Agglutinin / PNA


Mass: 25208.955 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Arachis hypogaea (peanut) / References: UniProt: P02872
#2: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Ca
#3: Chemical
ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mn
#4: Chemical
ChemComp-SFP / 5,10,15,20-TETRAKIS(4-SULPFONATOPHENYL)-21H,23H-PORPHINE


Mass: 939.020 Da / Num. of mol.: 11 / Source method: obtained synthetically / Formula: C44H34N4O12S4
#5: 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: 3.7 Å3/Da / Density % sol: 66.8 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 7.2
Details: ammonium sulphate, Sodium Chloride, Phosphate buffer, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

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Data collection

DiffractionMean temperature: 298 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Jun 11, 2002
RadiationMonochromator: Graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.9→100 Å / Num. all: 32142 / Num. obs: 32142 / % possible obs: 91.3 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 2.3 % / Rmerge(I) obs: 0.1 / Net I/σ(I): 6.5
Reflection shellResolution: 2.9→3 Å / Rmerge(I) obs: 0.743 / % possible all: 93.6

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS1refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2PEL

2pel


Resolution: 2.9→100 Å / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflectionSelection details
Rfree0.282 2565 random
Rwork0.234 --
all0.234 25976 -
obs0.234 25976 -
Refinement stepCycle: LAST / Resolution: 2.9→100 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6972 0 712 61 7745
LS refinement shellResolution: 2.9→2.92 Å / Rfactor Rfree: 0.471 / Rfactor Rwork: 0.436

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