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- PDB-4x9f: Crystal structure of Dscam1 isoform 6.9, N-terminal four Ig domains -

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Basic information

Entry
Database: PDB / ID: 4x9f
TitleCrystal structure of Dscam1 isoform 6.9, N-terminal four Ig domains
ComponentsDown Syndrome Cell Adhesion Molecule isoform 6.9
KeywordsCELL ADHESION / Ig fold
Function / homology
Function and homology information


DSCAM interactions / mushroom body development / detection of mechanical stimulus involved in sensory perception of touch / detection of molecule of bacterial origin / central nervous system morphogenesis / ventral cord development / dendrite self-avoidance / cell-cell adhesion mediator activity / axon extension involved in axon guidance / axon guidance receptor activity ...DSCAM interactions / mushroom body development / detection of mechanical stimulus involved in sensory perception of touch / detection of molecule of bacterial origin / central nervous system morphogenesis / ventral cord development / dendrite self-avoidance / cell-cell adhesion mediator activity / axon extension involved in axon guidance / axon guidance receptor activity / peripheral nervous system development / axonal fasciculation / regulation of dendrite morphogenesis / regulation of axonogenesis / homophilic cell adhesion via plasma membrane adhesion molecules / neuron development / phagocytosis / antigen binding / axon guidance / perikaryon / neuron projection / axon / neuronal cell body / dendrite / protein homodimerization activity / extracellular region / identical protein binding / plasma membrane
Similarity search - Function
Down syndrome cell adhesion molecule, C-terminal / Down syndrome cell adhesion molecule C terminal / Immunoglobulin domain / Immunoglobulin I-set / Immunoglobulin I-set domain / Fibronectin type III domain / Fibronectin type 3 domain / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Fibronectin type-III domain profile. ...Down syndrome cell adhesion molecule, C-terminal / Down syndrome cell adhesion molecule C terminal / Immunoglobulin domain / Immunoglobulin I-set / Immunoglobulin I-set domain / Fibronectin type III domain / Fibronectin type 3 domain / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Fibronectin type-III domain profile. / Fibronectin type III / Fibronectin type III superfamily / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulins / Immunoglobulin-like fold / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
Cell adhesion molecule Dscam1
Similarity search - Component
Biological speciesDrosophila melanogaster (fruit fly)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.35 Å
AuthorsChen, Q. / Yu, Y. / Li, S.A. / Cheng, L.
CitationJournal: Sci Adv / Year: 2016
Title: Structural basis of Dscam1 homodimerization: Insights into context constraint for protein recognition
Authors: Li, S.A. / Cheng, L. / Yu, Y. / Chen, Q.
History
DepositionDec 11, 2014Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Dec 16, 2015Provider: repository / Type: Initial release
Revision 1.1Oct 5, 2016Group: Database references
Revision 1.2Sep 13, 2017Group: Data collection / Derived calculations
Category: diffrn_detector / diffrn_source / pdbx_struct_oper_list
Item: _diffrn_detector.detector / _diffrn_detector.type ..._diffrn_detector.detector / _diffrn_detector.type / _diffrn_source.pdbx_synchrotron_beamline / _diffrn_source.pdbx_synchrotron_site / _diffrn_source.type / _pdbx_struct_oper_list.symmetry_operation
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / 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_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_struct_assembly_gen.asym_id_list / _pdbx_unobs_or_zero_occ_atoms.label_asym_id / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Nov 8, 2023Group: 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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Down Syndrome Cell Adhesion Molecule isoform 6.9
B: Down Syndrome Cell Adhesion Molecule isoform 6.9
hetero molecules


Theoretical massNumber of molelcules
Total (without water)92,37327
Polymers87,0922
Non-polymers5,28125
Water3,819212
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area10520 Å2
ΔGint-81 kcal/mol
Surface area38190 Å2
MethodPISA
Unit cell
Length a, b, c (Å)63.686, 90.500, 169.601
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein , 1 types, 2 molecules AB

#1: Protein Down Syndrome Cell Adhesion Molecule isoform 6.9


Mass: 43546.188 Da / Num. of mol.: 2 / Fragment: N-terminal four Ig domains
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Drosophila melanogaster (fruit fly) / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q0E9K4*PLUS

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Sugars , 2 types, 4 molecules

#2: Polysaccharide alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[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: 910.823 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3/a4-b1_b4-c1_c3-d1_c6-e1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#3: Polysaccharide beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}}LINUCSPDB-CARE

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Non-polymers , 4 types, 233 molecules

#4: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL / Glycerol


Mass: 92.094 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C3H8O3
#5: Chemical
ChemComp-SO4 / SULFATE ION / Sulfate


Mass: 96.063 Da / Num. of mol.: 15 / Source method: obtained synthetically / Formula: SO4
#6: Chemical ChemComp-EPE / 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID / HEPES / HEPES


Mass: 238.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C8H18N2O4S / Comment: pH buffer*YM
#7: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 212 / 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: 2.81 Å3/Da / Density % sol: 56.29 %
Crystal growTemperature: 289 K / Method: vapor diffusion, hanging drop
Details: 0.1M HEPES pH7.5, 0.2M Ammonium Sulfate, 25% (w/v) PEG 3350

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 19-ID / Wavelength: 1 Å
DetectorType: DECTRIS PILATUS 2M / Detector: PIXEL / Date: Sep 1, 2014
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.35→50 Å / Num. obs: 42006 / % possible obs: 99.7 % / Redundancy: 7.9 % / Net I/σ(I): 27.7

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Processing

Software
NameVersionClassification
PHENIX(phenix.refine: 1.8.4_1496)refinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2V5M

2v5m


Resolution: 2.35→38.305 Å / SU ML: 0.32 / Cross valid method: FREE R-VALUE / σ(F): 1.35 / Phase error: 26.39 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.2603 2128 5.08 %
Rwork0.2109 --
obs0.2134 41930 99.3 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 2.35→38.305 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6097 0 269 212 6578
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0046519
X-RAY DIFFRACTIONf_angle_d0.9118847
X-RAY DIFFRACTIONf_dihedral_angle_d13.712487
X-RAY DIFFRACTIONf_chiral_restr0.0361019
X-RAY DIFFRACTIONf_plane_restr0.0031123
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.3395-2.3940.34261400.28422405X-RAY DIFFRACTION92
2.394-2.45380.35191380.27692648X-RAY DIFFRACTION100
2.4538-2.52010.33421660.28332584X-RAY DIFFRACTION100
2.5201-2.59430.27291300.26832647X-RAY DIFFRACTION100
2.5943-2.6780.32711380.26782641X-RAY DIFFRACTION100
2.678-2.77370.29461480.26092640X-RAY DIFFRACTION100
2.7737-2.88470.29951320.25782649X-RAY DIFFRACTION100
2.8847-3.01590.29441440.24962649X-RAY DIFFRACTION100
3.0159-3.17490.25991450.2532641X-RAY DIFFRACTION100
3.1749-3.37370.28741340.23322687X-RAY DIFFRACTION100
3.3737-3.6340.2441430.21442651X-RAY DIFFRACTION100
3.634-3.99930.25551270.19732720X-RAY DIFFRACTION100
3.9993-4.57720.21551520.16832692X-RAY DIFFRACTION100
4.5772-5.76370.21671430.16112725X-RAY DIFFRACTION100
5.7637-38.31010.2641480.1922823X-RAY DIFFRACTION98

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