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- PDB-2c4a: Structure of Neuraminidase Subtype N9 Complexed with 30 MM Sialic... -

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Entry
Database: PDB / ID: 2c4a
TitleStructure of Neuraminidase Subtype N9 Complexed with 30 MM Sialic Acid (NANA, NEU5AC), Crystal Soaked for 3 Hours at 291 K.
ComponentsNEURAMINIDASE SUBTYPE N9
KeywordsHYDROLASE / INFLUENZA TYPE A / NEURAMINIDASE / SIALIC ACID / SUBTYPE N9 / GLYCOPROTEIN / GLYCOSIDASE / TRANSMEMBRANE
Function / homology
Function and homology information


exo-alpha-sialidase / exo-alpha-sialidase activity / viral budding from plasma membrane / carbohydrate metabolic process / host cell plasma membrane / virion membrane / metal ion binding / membrane
Similarity search - Function
Sialidase, Influenza viruses A/B / Glycoside hydrolase, family 34 / Neuraminidase / Neuraminidase - #10 / Sialidase superfamily / 6 Propeller / Neuraminidase / Mainly Beta
Similarity search - Domain/homology
N-acetyl-alpha-neuraminic acid / Neuraminidase
Similarity search - Component
Biological speciesINFLUENZA A VIRUS
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.15 Å
AuthorsRudino-Pinera, E. / Tunnah, P. / Crennell, S.J. / Webster, R.G. / Laver, W.G. / Garman, E.F.
CitationJournal: To be Published
Title: The Crystal Structure of Influenza Type a Virus Neuraminidase of the N6 Subtype at 1.85 A Resolution
Authors: Rudino-Pinera, E. / Crennell, S.J. / Webster, R.G. / Laver, W.G. / Garman, E.F.
History
DepositionOct 17, 2005Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 27, 2007Provider: repository / Type: Initial release
Revision 1.1May 7, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Jun 20, 2018Group: Data collection / Structure summary / Category: struct / Item: _struct.title
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...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_struct_special_symmetry / 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 / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.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 / _pdbx_struct_special_symmetry.label_asym_id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _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 13, 2023Group: Data collection / Database references ...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
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 3.0Oct 1, 2025Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / pdbx_entry_details ...atom_site / pdbx_entry_details / pdbx_modification_feature / pdbx_nonpoly_scheme / pdbx_struct_conn_angle / pdbx_struct_special_symmetry / pdbx_validate_close_contact / struct_conn
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_seq_id / _atom_site.occupancy / _pdbx_nonpoly_scheme.auth_seq_num / _pdbx_nonpoly_scheme.pdb_seq_num / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_special_symmetry.auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: NEURAMINIDASE SUBTYPE N9
hetero molecules


Theoretical massNumber of molelcules
Total (without water)46,5877
Polymers43,7241
Non-polymers2,8646
Water4,666259
1
A: NEURAMINIDASE SUBTYPE N9
hetero molecules

A: NEURAMINIDASE SUBTYPE N9
hetero molecules

A: NEURAMINIDASE SUBTYPE N9
hetero molecules

A: NEURAMINIDASE SUBTYPE N9
hetero molecules


Theoretical massNumber of molelcules
Total (without water)186,35028
Polymers174,8954
Non-polymers11,45424
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation15_555y,-x,z1
crystal symmetry operation16_555-y,x,z1
crystal symmetry operation2_555-x,-y,z1
MethodPQS
Unit cell
Length a, b, c (Å)181.336, 181.336, 181.336
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number211
Space group name H-MI432
Components on special symmetry positions
IDModelComponents
11A-2179-

HOH

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Components

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Protein , 1 types, 1 molecules A

#1: Protein NEURAMINIDASE SUBTYPE N9


Mass: 43723.770 Da / Num. of mol.: 1 / Fragment: RESIDUES 83-470
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) INFLUENZA A VIRUS / Strain: A/TERN/STERNA ALBIFRONS/N9 / Production host: GALLUS GALLUS (chicken) / References: UniProt: P03472, exo-alpha-sialidase

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Sugars , 4 types, 5 molecules

#2: Polysaccharide alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1559.386 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-2DManpa1-2DManpa1-3[DManpa1-3[DManpa1-6]DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,9,8/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3-3-3-3-3/a4-b1_b4-c1_c3-d1_c6-g1_d2-e1_e2-f1_g3-h1_g6-i1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{[(2+1)][a-D-Manp]{[(2+1)][a-D-Manp]{}}}[(6+1)][a-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}}}LINUCSPDB-CARE
#3: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#4: Sugar ChemComp-SIA / N-acetyl-alpha-neuraminic acid / N-acetylneuraminic acid / sialic acid / alpha-sialic acid / O-SIALIC ACID


Type: D-saccharide, alpha linking / Mass: 309.270 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Formula: C11H19NO9
IdentifierTypeProgram
DNeup5AcaCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-a-D-neuraminic acidCOMMON NAMEGMML 1.0
a-D-Neup5AcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
Neu5AcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#5: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 2 types, 260 molecules

#6: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 259 / Source method: isolated from a natural source / Formula: H2O

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Details

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: 2.94 Å3/Da / Density % sol: 58.22 %
Crystal growpH: 6.8
Details: PROTEIN WAS CRYSTALLISED FROM 1.9M POTASSIUM PHOSPHATE PH 6.8, THEN SOAKED FOR 3 HOURS IN 30 MM NEU5AC

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200H / Wavelength: 1.5418
DetectorType: MAR scanner 345 mm plate / Detector: IMAGE PLATE / Date: Jun 10, 2004 / Details: CONFOCAL OSMIC BLUE
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.15→38.66 Å / Num. obs: 27874 / % possible obs: 100 % / Observed criterion σ(I): 0 / Redundancy: 9.9 % / Biso Wilson estimate: 16.57 Å2 / Rmerge(I) obs: 0.12 / Net I/σ(I): 5.5
Reflection shellResolution: 2.15→2.21 Å / Redundancy: 9.4 % / Rmerge(I) obs: 0.27 / Mean I/σ(I) obs: 2.8 / % possible all: 100

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Processing

Software
NameVersionClassification
REFMAC5.2.0005refinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 7NN9

7nn9


Resolution: 2.15→30.1 Å / Cor.coef. Fo:Fc: 0.95 / Cor.coef. Fo:Fc free: 0.924 / SU B: 3.66 / SU ML: 0.098 / Cross valid method: THROUGHOUT / ESU R: 0.184 / ESU R Free: 0.164 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.205 1401 5 %RANDOM
Rwork0.158 ---
obs0.16 26444 99.9 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 12.2 Å2
Refinement stepCycle: LAST / Resolution: 2.15→30.1 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3067 0 190 259 3516
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0170.0213338
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.6021.9894556
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg7.6475385
X-RAY DIFFRACTIONr_dihedral_angle_2_deg33.30523.469147
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.15415492
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.6881524
X-RAY DIFFRACTIONr_chiral_restr0.1110.2514
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.022484
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.2870.21586
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.310.22217
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1410.2285
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.190.289
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.0920.224
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.6891.51993
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.05723134
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it1.9831578
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it2.9114.51422
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: 2.15→2.21 Å / Total num. of bins used: 20 /
RfactorNum. reflection
Rfree0.225 100
Rwork0.151 1891

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