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- PDB-4bq4: Structural analysis of an exo-beta-agarase -

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Basic information

Entry
Database: PDB / ID: 4bq4
TitleStructural analysis of an exo-beta-agarase
ComponentsB-AGARASE
KeywordsHYDROLASE
Function / homology
Function and homology information


beta-agarase / beta-agarase activity / beta-galactosidase complex / beta-galactosidase activity / carbohydrate metabolic process / membrane / metal ion binding
Similarity search - Function
Agarase, CBM-like domain / Agarase CBM like domain / Glycoside hydrolase, family 42, N-terminal / Beta-galactosidase / Galactose-binding lectin / Glycosidases / Glycoside hydrolase superfamily / Jelly Rolls / TIM Barrel / Alpha-Beta Barrel ...Agarase, CBM-like domain / Agarase CBM like domain / Glycoside hydrolase, family 42, N-terminal / Beta-galactosidase / Galactose-binding lectin / Glycosidases / Glycoside hydrolase superfamily / Jelly Rolls / TIM Barrel / Alpha-Beta Barrel / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Biological speciesSACCHAROPHAGUS DEGRADANS (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.05 Å
AuthorsPluvinage, B. / Hehemann, J.H. / Boraston, A.B.
CitationJournal: J.Biol.Chem. / Year: 2013
Title: Substrate Recognition and Hydrolysis by a Family 50 Exo-Beta-Agarase Aga50D from the Marine Bacterium Saccharophagus Degradans
Authors: Pluvinage, B. / Hehemann, J.H. / Boraston, A.B.
History
DepositionMay 29, 2013Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 14, 2013Provider: repository / Type: Initial release
Revision 1.1Aug 21, 2013Group: Database references
Revision 1.2Aug 28, 2013Group: Atomic model / Database references / Derived calculations
Revision 1.3Oct 16, 2013Group: Database references
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Other / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_database_status / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _pdbx_database_status.status_code_sf / _pdbx_struct_assembly_gen.asym_id_list / _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.ptnr2_label_asym_id / _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.value / _struct_conn.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _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.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
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Dec 20, 2023Group: Advisory / Data collection ...Advisory / Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_unobs_or_zero_occ_atoms
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: B-AGARASE
B: B-AGARASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)170,75316
Polymers168,5942
Non-polymers2,15814
Water22,2671236
1
A: B-AGARASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)85,3768
Polymers84,2971
Non-polymers1,0797
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
2
B: B-AGARASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)85,3768
Polymers84,2971
Non-polymers1,0797
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)69.230, 116.010, 208.760
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein B-AGARASE / FAMILY 50 GLYCOSIDE HYDROLASE


Mass: 84297.227 Da / Num. of mol.: 2 / Fragment: CATALYTIC MODULE, RESIDUES 47-793 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) SACCHAROPHAGUS DEGRADANS (bacteria) / Strain: 2-40 / Production host: ESCHERICHIA COLI (E. coli) / References: UniProt: Q21HC5, beta-agarase
#2: Polysaccharide 3,6-anhydro-alpha-L-galactopyranose-(1-3)-beta-D-galactopyranose-(1-4)-3,6-anhydro-alpha-L- ...3,6-anhydro-alpha-L-galactopyranose-(1-3)-beta-D-galactopyranose-(1-4)-3,6-anhydro-alpha-L-galactopyranose-(1-3)-beta-D-galactopyranose


Type: oligosaccharide / Mass: 630.548 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
WURCS=2.0/2,4,3/[a2112h-1b_1-5][a1221h-1a_1-5_3-6]/1-2-1-2/a3-b1_b4-c1_c3-d1WURCSPDB2Glycan 1.1.0
[][<C12O9>]{[(1+1)][b-D-Galp]{[(3+1)]{}}}LINUCSPDB-CARE
#3: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C3H8O3
#4: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Ca
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 1236 / 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: 2.5 Å3/Da / Density % sol: 51 % / Description: NONE
Crystal growDetails: 21% (W/V) PEG 3350, 0.24 M LITHIUM SULFATE, 0.1 M TRIS-HCL, PH 8.5

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: CLSI / Beamline: 08ID-1 / Wavelength: 0.97949
DetectorType: MARRESEARCH MX-300 / Detector: CCD
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97949 Å / Relative weight: 1
ReflectionResolution: 2.05→40 Å / Num. obs: 105772 / % possible obs: 99.5 % / Observed criterion σ(I): 2 / Redundancy: 5.5 % / Rmerge(I) obs: 0.1 / Net I/σ(I): 10.9
Reflection shellResolution: 2.05→2.16 Å / Redundancy: 4.6 % / Rmerge(I) obs: 0.38 / Mean I/σ(I) obs: 3.3 / % possible all: 97

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Processing

Software
NameVersionClassification
REFMAC5.7.0032refinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 4BQ2

4bq2


Resolution: 2.05→39.29 Å / Cor.coef. Fo:Fc: 0.958 / Cor.coef. Fo:Fc free: 0.935 / SU B: 3.788 / SU ML: 0.103 / Cross valid method: THROUGHOUT / ESU R: 0.18 / ESU R Free: 0.158 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT. U VALUES REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.2088 5278 5 %RANDOM
Rwork0.16288 ---
obs0.16514 100312 99.52 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 22.539 Å2
Baniso -1Baniso -2Baniso -3
1-0.25 Å20 Å20 Å2
2---0.57 Å20 Å2
3---0.31 Å2
Refinement stepCycle: LAST / Resolution: 2.05→39.29 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms11804 0 138 1236 13178
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0130.01912360
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.581.95216821
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.46351514
X-RAY DIFFRACTIONr_dihedral_angle_2_deg34.16323.99584
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.282151884
X-RAY DIFFRACTIONr_dihedral_angle_4_deg16.2261561
X-RAY DIFFRACTIONr_chiral_restr0.1030.21770
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.0219619
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it
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: 2.05→2.103 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.269 354 -
Rwork0.218 6945 -
obs--94.01 %

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