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- PDB-5a6l: High resolution structure of the thermostable glucuronoxylan endo... -

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Basic information

Entry
Database: PDB / ID: 5a6l
TitleHigh resolution structure of the thermostable glucuronoxylan endo-Beta-1, 4-xylanase, CtXyn30A, from Clostridium thermocellum with two xylobiose units bound
ComponentsCARBOHYDRATE BINDING FAMILY 6
KeywordsHYDROLASE / PROTEIN
Function / homology
Function and homology information


glucosylceramidase activity / sphingolipid metabolic process / polysaccharide catabolic process / carbohydrate binding / membrane
Similarity search - Function
Cellulose binding, type IV / Cellulose Binding Domain Type IV / Glycosyl hydrolase family 30, beta sandwich domain / Glycosyl hydrolase family 30 beta sandwich domain / Glycoside hydrolase family 30 / Carbohydrate binding module (family 6) / Clostridium cellulosome enzymes repeated domain signature. / CBM6 (carbohydrate binding type-6) domain profile. / Carbohydrate binding module family 6 / Dockerin domain ...Cellulose binding, type IV / Cellulose Binding Domain Type IV / Glycosyl hydrolase family 30, beta sandwich domain / Glycosyl hydrolase family 30 beta sandwich domain / Glycoside hydrolase family 30 / Carbohydrate binding module (family 6) / Clostridium cellulosome enzymes repeated domain signature. / CBM6 (carbohydrate binding type-6) domain profile. / Carbohydrate binding module family 6 / Dockerin domain / Dockerin domain profile. / Dockerin type I domain / Dockerin type I repeat / Dockerin domain superfamily / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta / Galactose-binding-like domain superfamily / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / Glycosidases / Glycoside hydrolase superfamily / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
4beta-beta-xylobiose / DI(HYDROXYETHYL)ETHER / PHOSPHATE ION / Carbohydrate binding family 6
Similarity search - Component
Biological speciesCLOSTRIDIUM THERMOCELLUM (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.8 Å
AuthorsFreire, F. / Verma, A.K. / Bule, P. / Goyal, A. / Fontes, C.M.G.A. / Najmudin, S.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2016
Title: Conservation in the Mechanism of Glucuronoxylan Hydrolysis Revealed by the Structure of Glucuronoxylan Xylano-Hydrolase (Ctxyn30A) from Clostridium Thermocellum
Authors: Freire, F. / Verma, A.K. / Bule, P. / Alves, V.D. / Fontes, C.M.G.A. / Goyal, A. / Najmudin, S.
History
DepositionJun 30, 2015Deposition site: PDBE / Processing site: PDBE
Revision 1.0Oct 19, 2016Provider: repository / Type: Initial release
Revision 1.1Nov 23, 2016Group: Database references
Revision 1.2Aug 23, 2017Group: Data collection / Category: diffrn_detector / Item: _diffrn_detector.type
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 / entity_name_com / 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_molecule_features / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_close_contact / 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.occupancy / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.src_method / _entity.type / _pdbx_database_status.status_code_sf / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_close_contact.auth_asym_id_1 / _pdbx_validate_close_contact.auth_atom_id_1 / _pdbx_validate_close_contact.auth_seq_id_1 / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Jan 10, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_conn
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_leaving_atom_flag
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: CARBOHYDRATE BINDING FAMILY 6
hetero molecules


Theoretical massNumber of molelcules
Total (without water)47,82612
Polymers46,3961
Non-polymers1,43011
Water7,278404
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)50.133, 87.249, 60.027
Angle α, β, γ (deg.)90.00, 114.68, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein CARBOHYDRATE BINDING FAMILY 6 / XYN30A


Mass: 46396.027 Da / Num. of mol.: 1 / Fragment: N-TERMINAL CATALYTIC MODULE, UNP RESIDUES 34-419 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) CLOSTRIDIUM THERMOCELLUM (bacteria) / Plasmid: PET28A / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: A3DJS9, endo-1,4-beta-xylanase
#2: Polysaccharide beta-D-xylopyranose-(1-4)-beta-D-xylopyranose / 4beta-beta-xylobiose


Type: oligosaccharide, Oligosaccharide / Class: Metabolism / Mass: 282.245 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: 4beta-beta-xylobiose
DescriptorTypeProgram
DXylpb1-4DXylpb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a212h-1b_1-5]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][b-D-Xylp]{[(4+1)][b-D-Xylp]{}}LINUCSPDB-CARE
#3: Chemical
ChemComp-PO4 / PHOSPHATE ION


Mass: 94.971 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: PO4
#4: Chemical ChemComp-PEG / DI(HYDROXYETHYL)ETHER


Mass: 106.120 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C4H10O3
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 404 / 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: 2.57 Å3/Da / Density % sol: 52.25 % / Description: NONE
Crystal growDetails: 0.2 M POTASSIUM PHOSPHATE

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SOLEIL / Beamline: PROXIMA 1 / Wavelength: 0.95373
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Dec 17, 2014
RadiationMonochromator: CHANNEL CUT CRYOGENICALLY COOLED MONOCHROMATOR CRYSTAL
Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.95373 Å / Relative weight: 1
ReflectionResolution: 1.8→46.25 Å / Num. obs: 43517 / % possible obs: 100 % / Observed criterion σ(I): 9.8 / Redundancy: 3.8 % / Rmerge(I) obs: 0.28 / Net I/σ(I): 17.5
Reflection shellResolution: 1.8→1.84 Å / Redundancy: 3.8 % / Rmerge(I) obs: 1.49 / Mean I/σ(I) obs: 9.8 / % possible all: 100

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Processing

Software
NameVersionClassification
REFMAC5.8.0123refinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDBE ENTRY 4UQE

4uqe


Resolution: 1.8→54.54 Å / Cor.coef. Fo:Fc: 0.964 / Cor.coef. Fo:Fc free: 0.95 / SU B: 3.268 / SU ML: 0.054 / Cross valid method: THROUGHOUT / ESU R: 0.092 / ESU R Free: 0.089 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. U VALUES WITH TLS ADDED
RfactorNum. reflection% reflectionSelection details
Rfree0.16242 2128 4.9 %RANDOM
Rwork0.1358 ---
obs0.13712 41363 99.97 %-
Solvent computationIon probe radii: 0.7 Å / Shrinkage radii: 0.7 Å / VDW probe radii: 1.3 Å / Solvent model: MASK
Displacement parametersBiso mean: 9.888 Å2
Baniso -1Baniso -2Baniso -3
1-0.01 Å20 Å2-0.16 Å2
2--0.18 Å20 Å2
3----0.03 Å2
Refinement stepCycle: LAST / Resolution: 1.8→54.54 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3114 0 85 404 3603
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0180.0193361
X-RAY DIFFRACTIONr_bond_other_d0.0020.023078
X-RAY DIFFRACTIONr_angle_refined_deg1.7631.954598
X-RAY DIFFRACTIONr_angle_other_deg1.02337088
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.6135417
X-RAY DIFFRACTIONr_dihedral_angle_2_deg41.33824.182165
X-RAY DIFFRACTIONr_dihedral_angle_3_deg11.67815542
X-RAY DIFFRACTIONr_dihedral_angle_4_deg20.1891522
X-RAY DIFFRACTIONr_chiral_restr0.1090.2495
X-RAY DIFFRACTIONr_gen_planes_refined0.010.0213818
X-RAY DIFFRACTIONr_gen_planes_other0.0020.02816
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_it0.4190.5161585
X-RAY DIFFRACTIONr_mcbond_other0.4170.5161584
X-RAY DIFFRACTIONr_mcangle_it0.7310.7721987
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it0.910.6771776
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: 1.8→1.847 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.196 155 -
Rwork0.16 3054 -
obs--99.88 %
Refinement TLS params.Method: refined / Origin x: 22.9169 Å / Origin y: 42.9374 Å / Origin z: 34.4216 Å
111213212223313233
T0.0052 Å2-0.0014 Å2-0.0047 Å2-0.0102 Å20.006 Å2--0.0079 Å2
L0.4435 °2-0.1923 °2-0.2101 °2-0.536 °20.1898 °2--0.3539 °2
S-0.0129 Å °-0.0169 Å °0.0119 Å °0.047 Å °0.0135 Å °-0.0244 Å °0.0105 Å °-0.0059 Å °-0.0005 Å °
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A-2 - 10
2X-RAY DIFFRACTION1A11 - 295
3X-RAY DIFFRACTION1A296 - 386

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