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Basic information

Entry
Database: PDB / ID: 5oxr
TitleCrystal structure of human lung surfactant protein D trimeric fragment with bound ligand Salmonella enterica Minnesota R7 oligosaccharide
ComponentsPulmonary surfactant-associated protein D
KeywordsSURFACTANT PROTEIN / trimeric recombinant collectin fragment / neck+CRD / alpha-helical coiled coil / carbohydrate recognition domain / lectin / sugar binding protein
Function / homology
Function and homology information


Toll Like Receptor TLR1:TLR2 Cascade / Defective CSF2RB causes SMDP5 / Defective CSF2RA causes SMDP4 / Toll Like Receptor 4 (TLR4) Cascade / clathrin-coated endocytic vesicle / Regulation of TLR by endogenous ligand / respiratory gaseous exchange by respiratory system / Surfactant metabolism / collagen trimer / surfactant homeostasis ...Toll Like Receptor TLR1:TLR2 Cascade / Defective CSF2RB causes SMDP5 / Defective CSF2RA causes SMDP4 / Toll Like Receptor 4 (TLR4) Cascade / clathrin-coated endocytic vesicle / Regulation of TLR by endogenous ligand / respiratory gaseous exchange by respiratory system / Surfactant metabolism / collagen trimer / surfactant homeostasis / Signal regulatory protein family interactions / negative regulation of interleukin-2 production / lung alveolus development / macrophage chemotaxis / endocytic vesicle / negative regulation of T cell proliferation / positive regulation of phagocytosis / regulation of cytokine production / multivesicular body / receptor-mediated endocytosis / reactive oxygen species metabolic process / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / SARS-CoV-1 activates/modulates innate immune responses / carbohydrate binding / lysosome / defense response to bacterium / innate immune response / endoplasmic reticulum membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / extracellular space / extracellular region / identical protein binding
Similarity search - Function
Lung surfactant protein D coiled-coil trimerisation / Lung surfactant protein D coiled-coil trimerisation / Collectin, C-type lectin-like domain / : / Collagen triple helix repeat / Collagen triple helix repeat (20 copies) / C-type lectin, conserved site / C-type lectin domain signature. / Mannose-Binding Protein A; Chain A / Mannose-Binding Protein A, subunit A ...Lung surfactant protein D coiled-coil trimerisation / Lung surfactant protein D coiled-coil trimerisation / Collectin, C-type lectin-like domain / : / Collagen triple helix repeat / Collagen triple helix repeat (20 copies) / C-type lectin, conserved site / C-type lectin domain signature. / Mannose-Binding Protein A; Chain A / Mannose-Binding Protein A, subunit A / Lectin C-type domain / C-type lectin domain profile. / C-type lectin-like / C-type lectin (CTL) or carbohydrate-recognition domain (CRD) / C-type lectin-like/link domain superfamily / C-type lectin fold / Roll / Alpha Beta
Similarity search - Domain/homology
Pulmonary surfactant-associated protein D
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.75 Å
AuthorsShrive, A.K. / Greenhough, T.J.
Citation
Journal: PLoS ONE / Year: 2018
Title: Structural definition of hSP-D recognition of Salmonella enterica LPS inner core oligosaccharides reveals alternative binding modes for the same LPS.
Authors: Littlejohn, J.R. / da Silva, R.F. / Neale, W.A. / Smallcombe, C.C. / Clark, H.W. / Mackay, R.A. / Watson, A.S. / Madsen, J. / Hood, D.W. / Burns, I. / Greenhough, T.J. / Shrive, A.K.
#1: Journal: Infect. Immun. / Year: 2016
Title: Crystal Structure of a Complex of Surfactant Protein D (SP-D) and Haemophilus influenzae Lipopolysaccharide Reveals Shielding of Core Structures in SP-D-Resistant Strains.
Authors: Clark, H.W. / Mackay, R.M. / Deadman, M.E. / Hood, D.W. / Madsen, J. / Moxon, E.R. / Townsend, J.P. / Reid, K.B.M. / Ahmed, A. / Shaw, A.J. / Greenhough, T.J. / Shrive, A.K.
History
DepositionSep 7, 2017Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 20, 2018Provider: repository / Type: Initial release
Revision 1.1Jun 27, 2018Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.name
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...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_struct_conn_angle / struct_asym / struct_conn / struct_conn_type / 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_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_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_symmetry / _struct_conn_type.id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Jan 17, 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
Revision 2.2Oct 23, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Pulmonary surfactant-associated protein D
B: Pulmonary surfactant-associated protein D
C: Pulmonary surfactant-associated protein D
hetero molecules


Theoretical massNumber of molelcules
Total (without water)58,07514
Polymers56,5053
Non-polymers1,57011
Water8,629479
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration, Trimer previously established in literature using a range of methods including gel filtration, EM, crystal structure, homology etc
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area7920 Å2
ΔGint-142 kcal/mol
Surface area21040 Å2
MethodPISA
Unit cell
Length a, b, c (Å)55.329, 108.140, 55.670
Angle α, β, γ (deg.)90.000, 91.820, 90.000
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein Pulmonary surfactant-associated protein D / SP-D / Collectin-7 / Lung surfactant protein D


Mass: 18834.957 Da / Num. of mol.: 3 / Fragment: Trimeric neck + carbohydrate recognition domain
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SFTPD, COLEC7, PSPD, SFTP4 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P35247
#2: Polysaccharide L-glycero-alpha-D-manno-heptopyranose-(1-3)-L-glycero-alpha-D-manno-heptopyranose-(1-5)-4,7-anhydro- ...L-glycero-alpha-D-manno-heptopyranose-(1-3)-L-glycero-alpha-D-manno-heptopyranose-(1-5)-4,7-anhydro-3-deoxy-D-gluco-oct-2-ulosonic acid


Type: oligosaccharide / Mass: 604.511 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
WURCS=2.0/2,3,2/[AOd2122h_4-7][a11221h-1a_1-5]/1-2-2/a5-b1_b3-c1WURCSPDB2Glycan 1.1.0
[][<C8O6>]{[(1+1)][a-D-Manp]{[(3+1)][a-D-Manp]{}}}LINUCSPDB-CARE
#3: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: Ca
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 479 / 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: 2.95 Å3/Da / Density % sol: 58.25 % / Mosaicity: 0.91 °
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 7 / Details: 0.1M Tris pH 7.0, 16% PEG 10000

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: Diamond / Beamline: I03 / Wavelength: 0.97625 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: May 19, 2013
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97625 Å / Relative weight: 1
ReflectionResolution: 1.75→55.3 Å / Num. obs: 61250 / % possible obs: 93.2 % / Redundancy: 2.3 % / CC1/2: 0.991 / Rmerge(I) obs: 0.066 / Rpim(I) all: 0.05 / Rrim(I) all: 0.083 / Net I/σ(I): 7.3
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. unique obsCC1/2Rpim(I) allRrim(I) all% possible all
1.75-1.782.30.35932990.7740.2810.45991.2
9.09-55.32.40.0384680.9590.0280.04896.5

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Processing

Software
NameVersionClassification
MOSFLMdata reduction
Aimless0.5.28data scaling
REFMAC5.8.0158refinement
PDB_EXTRACT3.22data extraction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: pdbid 1PW9

1pw9


Resolution: 1.75→55.3 Å / Cor.coef. Fo:Fc: 0.96 / Cor.coef. Fo:Fc free: 0.948 / SU B: 2.18 / SU ML: 0.068 / SU R Cruickshank DPI: 0.0984 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.098 / ESU R Free: 0.094
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.1958 3158 5.2 %RANDOM
Rwork0.1732 ---
obs0.1743 58070 92.98 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å
Displacement parametersBiso max: 101.22 Å2 / Biso mean: 23.556 Å2 / Biso min: 9.69 Å2
Baniso -1Baniso -2Baniso -3
1--0.14 Å2-0 Å20.06 Å2
2--1.07 Å20 Å2
3----0.94 Å2
Refinement stepCycle: final / Resolution: 1.75→55.3 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3469 0 91 479 4039
Biso mean--31.14 34.21 -
Num. residues----454
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.010.023649
X-RAY DIFFRACTIONr_bond_other_d0.0020.023230
X-RAY DIFFRACTIONr_angle_refined_deg1.4021.9684944
X-RAY DIFFRACTIONr_angle_other_deg0.92137575
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.4725459
X-RAY DIFFRACTIONr_dihedral_angle_2_deg37.27925.965171
X-RAY DIFFRACTIONr_dihedral_angle_3_deg11.68515590
X-RAY DIFFRACTIONr_dihedral_angle_4_deg7.941512
X-RAY DIFFRACTIONr_chiral_restr0.0760.2553
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.024062
X-RAY DIFFRACTIONr_gen_planes_other0.0010.02698
LS refinement shellResolution: 1.75→1.795 Å / Rfactor Rfree error: 0 / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.268 252 -
Rwork0.252 4216 -
all-4468 -
obs--91.33 %

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