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- PDB-2a3g: The structure of T6 bovine insulin -

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Basic information

Entry
Database: PDB / ID: 2a3g
TitleThe structure of T6 bovine insulin
Components(Insulin) x 2
KeywordsHORMONE/GROWTH FACTOR / hormone / insulin family / carbohydrate metabolism / HORMONE-GROWTH FACTOR COMPLEX
Function / homology
Function and homology information


estradiol secretion / positive regulation of blood circulation / negative regulation of lactation / glucose import in response to insulin stimulus / positive regulation of cell maturation / positive regulation of lactation / response to L-arginine / positive regulation of mammary gland epithelial cell proliferation / response to butyrate / negative regulation of appetite ...estradiol secretion / positive regulation of blood circulation / negative regulation of lactation / glucose import in response to insulin stimulus / positive regulation of cell maturation / positive regulation of lactation / response to L-arginine / positive regulation of mammary gland epithelial cell proliferation / response to butyrate / negative regulation of appetite / feeding behavior / response to growth hormone / response to food / positive regulation of peptide hormone secretion / positive regulation of Rho protein signal transduction / protein secretion / response to glucose / negative regulation of lipid catabolic process / positive regulation of protein secretion / insulin receptor binding / response to nutrient levels / hormone activity / positive regulation of insulin secretion / glucose metabolic process / glucose homeostasis / response to heat / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of gene expression / negative regulation of apoptotic process / extracellular space / identical protein binding
Similarity search - Function
Insulin / Insulin family / Insulin-like / Insulin/IGF/Relaxin family / Insulin / insulin-like growth factor / relaxin family. / Insulin, conserved site / Insulin family signature. / Insulin-like superfamily
Similarity search - Domain/homology
Biological speciesBos taurus (domestic cattle)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.25 Å
AuthorsSmith, G.D. / Pangborn, W.A. / Blessing, R.H.
Citation
Journal: Acta Crystallogr.,Sect.D / Year: 2005
Title: The structure of T6 bovine insulin.
Authors: Smith, G.D. / Pangborn, W.A. / Blessing, R.H.
#1: Journal: Philos.Trans.R.Soc.London,Ser.B / Year: 1988
Title: The structure of 2Zn pig insulin crystals at 1.5 A resolution
Authors: Baker, E.N. / Blundell, T.L. / Cutfield, J.F. / Cutfield, S.M. / Dodson, E.J. / Dodson, G.G. / Hodgkin, D.M. / Hubbard, R.E. / Issacs, N.W. / Reynolds, C.D. / Sakabe, K. / Sakabe, N. / Vijayan, N.M.
#2: Journal: Acta Crystallogr.,Sect.D / Year: 2003
Title: The structure of T6 human insulin at 1.0 A resolution
Authors: Smith, G.D. / Pangborn, W.A. / Blessing, R.H.
#3: Journal: Acta Crystallogr.,Sect.D / Year: 2003
Title: Lessons from an aged, dried crystal of T(6) human insulin
Authors: Smith, G.D. / Blessing, R.H.
History
DepositionJun 24, 2005Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 25, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / 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_asym_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.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_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.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _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.ptnr1_symmetry / _struct_conn.ptnr2_auth_asym_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_conn.ptnr2_symmetry / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Oct 16, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Insulin
B: Insulin
C: Insulin
D: Insulin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)11,6186
Polymers11,4874
Non-polymers1312
Water1,00956
1
A: Insulin
B: Insulin
C: Insulin
D: Insulin
hetero molecules

A: Insulin
B: Insulin
C: Insulin
D: Insulin
hetero molecules

A: Insulin
B: Insulin
C: Insulin
D: Insulin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)34,85418
Polymers34,46112
Non-polymers3926
Water21612
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-y,x-y,z1
crystal symmetry operation3_555-x+y,-x,z1
Buried area20370 Å2
ΔGint-260 kcal/mol
Surface area11810 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)82.554, 82.554, 33.756
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number146
Space group name H-MH3
Components on special symmetry positions
IDModelComponents
11B-501-

ZN

21D-502-

ZN

31B-602-

HOH

41B-607-

HOH

51B-624-

HOH

61D-610-

HOH

71D-626-

HOH

DetailsTHE SECOND PART OF THE BIOLOGICAL ASSEMBLY IS GENERATED BY THE THREE FOLD AXIS: -Y, X-Y, Z / THE THIRD PART OF THE BIOLOGICAL ASSEMBLY IS GENERATED BY THE THREE FOLD AXIS: Y-X, -X, Z

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Components

#1: Protein/peptide Insulin


Mass: 2339.645 Da / Num. of mol.: 2 / Fragment: insulin A chain, residues 85-105 / Source method: isolated from a natural source / Source: (natural) Bos taurus (domestic cattle) / References: UniProt: P01317
#2: Protein/peptide Insulin


Mass: 3403.927 Da / Num. of mol.: 2 / Fragment: insulin B chain, residues 25-54 / Source method: isolated from a natural source / Source: (natural) Bos taurus (domestic cattle) / References: UniProt: P01317
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 56 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 1.9 Å3/Da / Density % sol: 35.2 %
Crystal growTemperature: 298 K / pH: 6.2
Details: HCl, ZINC ACETATE, SODIUM CITRATE, ACETONE, pH 6.2, SLOW COOLING, temperature 298 K, pH 6.20

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Data collection

DiffractionMean temperature: 298 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.54178
DetectorType: RIGAKU RAXIS IIC / Detector: IMAGE PLATE / Date: Aug 11, 1997 / Details: GRAPHITE MONOCHROMETER
RadiationMonochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54178 Å / Relative weight: 1
ReflectionResolution: 2.2→30.5 Å / Num. obs: 4345 / % possible obs: 99.5 % / Observed criterion σ(I): 0 / Redundancy: 4.04 % / Biso Wilson estimate: 25.9 Å2 / Rmerge(I) obs: 0.051 / Net I/σ(I): 18.1
Reflection shellResolution: 2.2→2.25 Å / Rmerge(I) obs: 0.207 / Mean I/σ(I) obs: 2.81 / % possible all: 94

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 4INS

4ins


Resolution: 2.25→30.5 Å / Isotropic thermal model: ISOTROPIC / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: ENGH & HUBER
RfactorNum. reflection% reflectionSelection details
Rfree0.219 425 -RANDOM
Rwork0.162 ---
obs0.162 4069 100 %-
all-4069 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 38.3 Å2 / ksol: 0.29 e/Å3
Displacement parametersBiso mean: 29.4 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.29 Å0.21 Å
Luzzati d res low-5 Å
Luzzati sigma a0.25 Å0.18 Å
Refinement stepCycle: LAST / Resolution: 2.25→30.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms796 0 2 56 854
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_deg1.08
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d21.3
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.7
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.451.5
X-RAY DIFFRACTIONc_mcangle_it2.42
X-RAY DIFFRACTIONc_scbond_it2.322
X-RAY DIFFRACTIONc_scangle_it3.532.5
LS refinement shellResolution: 2.25→2.39 Å / Rfactor Rfree error: 0.032
RfactorNum. reflection% reflection
Rfree0.258 64 -
Rwork0.204 --
obs--99.9 %

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