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- PDB-1g7p: CRYSTAL STRUCTURE OF MHC CLASS I H-2KB HEAVY CHAIN COMPLEXED WITH... -

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Basic information

Entry
Database: PDB / ID: 1g7p
TitleCRYSTAL STRUCTURE OF MHC CLASS I H-2KB HEAVY CHAIN COMPLEXED WITH BETA-2 MICROGLOBULIN AND YEAST ALPHA-GLUCOSIDASE
Components
  • ALPHA-GLUCOSIDASE P1
  • BETA-2 MICROGLOBULIN
  • H-2 CLASS I HISTOCOMPATIBILITY ANTIGEN, K-B ALPHA CHAIN
KeywordsIMMUNE SYSTEM / MHC class I / H-2Kb / YEAST / S. cerevisiae / alpha-glucosidase
Function / homology
Function and homology information


glucan 1,4-alpha-maltotriohydrolase activity / maltose catabolic process / oligo-1,6-glucosidase activity / sucrose catabolic process / alpha-1,4-glucosidase activity / sucrose alpha-glucosidase activity / alpha-glucosidase / Endosomal/Vacuolar pathway / DAP12 interactions / Antigen Presentation: Folding, assembly and peptide loading of class I MHC ...glucan 1,4-alpha-maltotriohydrolase activity / maltose catabolic process / oligo-1,6-glucosidase activity / sucrose catabolic process / alpha-1,4-glucosidase activity / sucrose alpha-glucosidase activity / alpha-glucosidase / Endosomal/Vacuolar pathway / DAP12 interactions / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / ER-Phagosome pathway / alpha-amylase activity / DAP12 signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / antigen processing and presentation of exogenous peptide antigen via MHC class I / inner ear development / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / cellular defense response / Neutrophil degranulation / lumenal side of endoplasmic reticulum membrane / cellular response to iron(III) ion / negative regulation of forebrain neuron differentiation / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / iron ion transport / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / regulation of erythrocyte differentiation / HFE-transferrin receptor complex / response to molecule of bacterial origin / MHC class I peptide loading complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / MHC class I protein complex / peptide antigen binding / positive regulation of receptor-mediated endocytosis / negative regulation of neurogenesis / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / multicellular organismal-level iron ion homeostasis / phagocytic vesicle membrane / negative regulation of epithelial cell proliferation / sensory perception of smell / positive regulation of cellular senescence / T cell differentiation in thymus / negative regulation of neuron projection development / protein refolding / protein homotetramerization / amyloid fibril formation / intracellular iron ion homeostasis / learning or memory / defense response to bacterium / external side of plasma membrane / structural molecule activity / Golgi apparatus / protein homodimerization activity / extracellular space / cytosol
Similarity search - Function
Oligo-1,6-glucosidase, domain 2 / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / MHC class I, alpha chain, C-terminal / MHC_I C-terminus / Glycosyl hydrolase, all-beta / MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / MHC class I alpha chain, alpha1 alpha2 domains ...Oligo-1,6-glucosidase, domain 2 / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / MHC class I, alpha chain, C-terminal / MHC_I C-terminus / Glycosyl hydrolase, all-beta / MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / MHC classes I/II-like antigen recognition protein / : / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Glycoside hydrolase superfamily / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold / Immunoglobulins / Immunoglobulin-like / Sandwich / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
: / Beta-2-microglobulin / H-2 class I histocompatibility antigen, K-B alpha chain / Alpha-glucosidase MAL62
Similarity search - Component
Biological speciesMus musculus (house mouse)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.5 Å
AuthorsApostolopoulos, V. / Yu, M. / Corper, A.L. / Li, W. / McKenzie, I.F. / Teyton, L. / Wilson, I.A.
CitationJournal: J.Mol.Biol. / Year: 2002
Title: Crystal structure of a non-canonical high affinity peptide complexed with MHC class I: a novel use of alternative anchors.
Authors: Apostolopoulos, V. / Yu, M. / Corper, A.L. / Li, W. / McKenzie, I.F. / Teyton, L. / Wilson, I.A.
History
DepositionNov 13, 2000Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 17, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
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 / 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_struct_assembly_gen.asym_id_list / _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 2.1Oct 30, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature
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: H-2 CLASS I HISTOCOMPATIBILITY ANTIGEN, K-B ALPHA CHAIN
B: BETA-2 MICROGLOBULIN
P: ALPHA-GLUCOSIDASE P1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,2345
Polymers44,4423
Non-polymers7922
Water5,062281
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area5100 Å2
ΔGint-6 kcal/mol
Surface area19540 Å2
MethodPISA
Unit cell
Length a, b, c (Å)136.090, 88.344, 45.659
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number18
Space group name H-MP21212

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein H-2 CLASS I HISTOCOMPATIBILITY ANTIGEN, K-B ALPHA CHAIN


Mass: 31648.322 Da / Num. of mol.: 1 / Fragment: EXTRACELLULAR DOMAINS, RESIDUES 22-295
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Drosophila melanogaster (fruit fly) / Strain (production host): SC2 / References: UniProt: P01901
#2: Protein BETA-2 MICROGLOBULIN


Mass: 11704.359 Da / Num. of mol.: 1 / Fragment: RESIDUES 21-119
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Drosophila melanogaster (fruit fly) / Strain (production host): SC2 / References: UniProt: P01887

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Protein/peptide / Non-polymers , 2 types, 282 molecules P

#3: Protein/peptide ALPHA-GLUCOSIDASE P1


Mass: 1089.208 Da / Num. of mol.: 1 / Fragment: RESIDUES 438-446 / Source method: obtained synthetically
Details: The 9-residue peptide of ALPHA-GLUCOSIDASE P1 was chemically synthesized
References: GenBank: 411229, UniProt: P07265*PLUS, alpha-glucosidase
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 281 / Source method: isolated from a natural source / Formula: H2O

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Sugars , 2 types, 2 molecules

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


Type: oligosaccharide / Mass: 570.542 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-1-2/a4-b1_a6-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}[(6+1)][a-L-Fucp]{}}}LINUCSPDB-CARE
#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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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: 3.09 Å3/Da / Density % sol: 60.15 %
Crystal growTemperature: 295 K / Method: vapor diffusion, sitting drop / pH: 7.25
Details: sodium/potassium phosphate, MPD, pH 7.25, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Crystal grow
*PLUS
Temperature: 22.5 ℃ / Method: unknown
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
11.8 Msodium potassium phosphate11
22 %(w/v)MPD11pH7.25

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Data collection

DiffractionMean temperature: 103 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-1 / Wavelength: 1.025 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Jun 16, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.025 Å / Relative weight: 1
ReflectionResolution: 1.5→50 Å / Num. all: 89041 / Num. obs: 79109 / % possible obs: 88.8 % / Observed criterion σ(I): 2.06 / Redundancy: 3.5 % / Biso Wilson estimate: 20 Å2 / Rmerge(I) obs: 0.035 / Net I/σ(I): 33.7
Reflection shellResolution: 1.5→1.53 Å / Redundancy: 2.8 % / Rmerge(I) obs: 0.467
Reflection
*PLUS
Lowest resolution: 50 Å / Num. obs: 82816 / % possible obs: 92.9 %
Reflection shell
*PLUS
% possible obs: 82.3 % / Num. unique obs: 3649 / Mean I/σ(I) obs: 2.1

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS0.9refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.5→23.38 Å / Rfactor Rfree error: 0.004 / Data cutoff high absF: 712061.85 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 2
RfactorNum. reflection% reflectionSelection details
Rfree0.222 3744 5.1 %RANDOM
Rwork0.205 ---
obs0.205 73849 82.8 %-
all-89041 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 58.38 Å2 / ksol: 0.426 e/Å3
Displacement parametersBiso mean: 25.4 Å2
Baniso -1Baniso -2Baniso -3
1--1.36 Å20 Å20 Å2
2--1.86 Å20 Å2
3----0.5 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.19 Å0.17 Å
Luzzati d res low-5 Å
Luzzati sigma a0.08 Å0.07 Å
Refinement stepCycle: LAST / Resolution: 1.5→23.38 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3128 0 52 281 3461
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_dihedral_angle_d24.7
X-RAY DIFFRACTIONc_improper_angle_d0.73
X-RAY DIFFRACTIONc_mcbond_it1.961.5
X-RAY DIFFRACTIONc_mcangle_it3.192
X-RAY DIFFRACTIONc_scbond_it3.672
X-RAY DIFFRACTIONc_scangle_it5.832.5
LS refinement shellResolution: 1.5→1.59 Å / Rfactor Rfree error: 0.011 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.24 447 5.2 %
Rwork0.219 8126 -
obs--58.5 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2CARBOHYDRATE.PARAMCARBOHYDRATE.TOP
X-RAY DIFFRACTION3WATER_REP.PARAMWATER.TOP
Refinement
*PLUS
% reflection Rfree: 10 % / Rfactor Rwork: 0.206
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_angle_deg1.27
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg24.7
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.73
LS refinement shell
*PLUS
Rfactor Rfree: 0.24

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