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- PDB-4ic2: Crystal structure of the XIAP RING domain -

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Basic information

Entry
Database: PDB / ID: 4ic2
TitleCrystal structure of the XIAP RING domain
ComponentsE3 ubiquitin-protein ligase XIAP
KeywordsLIGASE / RING DOMAIN / ZINC-FINGER / E3 ligase
Function / homology
Function and homology information


endopeptidase regulator activity / inhibition of cysteine-type endopeptidase activity / regulation of apoptosis involved in tissue homeostasis / positive regulation of protein linear polyubiquitination / regulation of BMP signaling pathway / copper ion homeostasis / regulation of nucleotide-binding domain, leucine rich repeat containing receptor signaling pathway / nucleotide-binding oligomerization domain containing 1 signaling pathway / nucleotide-binding oligomerization domain containing 2 signaling pathway / SMAC, XIAP-regulated apoptotic response ...endopeptidase regulator activity / inhibition of cysteine-type endopeptidase activity / regulation of apoptosis involved in tissue homeostasis / positive regulation of protein linear polyubiquitination / regulation of BMP signaling pathway / copper ion homeostasis / regulation of nucleotide-binding domain, leucine rich repeat containing receptor signaling pathway / nucleotide-binding oligomerization domain containing 1 signaling pathway / nucleotide-binding oligomerization domain containing 2 signaling pathway / SMAC, XIAP-regulated apoptotic response / Activation of caspases through apoptosome-mediated cleavage / Regulation of the apoptosome activity / SMAC (DIABLO) binds to IAPs / SMAC(DIABLO)-mediated dissociation of IAP:caspase complexes / TNFR1-induced proapoptotic signaling / RIPK1-mediated regulated necrosis / cysteine-type endopeptidase inhibitor activity / regulation of innate immune response / positive regulation of type I interferon production / protein K63-linked ubiquitination / cysteine-type endopeptidase inhibitor activity involved in apoptotic process / negative regulation of tumor necrosis factor-mediated signaling pathway / protein serine/threonine kinase binding / Regulation of PTEN localization / : / positive regulation of protein ubiquitination / TNFR1-induced NF-kappa-B signaling pathway / Deactivation of the beta-catenin transactivating complex / positive regulation of JNK cascade / Regulation of TNFR1 signaling / RING-type E3 ubiquitin transferase / Regulation of necroptotic cell death / Wnt signaling pathway / Regulation of PTEN stability and activity / ubiquitin-protein transferase activity / ubiquitin protein ligase activity / positive regulation of canonical Wnt signaling pathway / regulation of cell population proliferation / regulation of inflammatory response / regulation of apoptotic process / positive regulation of canonical NF-kappaB signal transduction / neuron apoptotic process / regulation of cell cycle / defense response to bacterium / DNA damage response / negative regulation of apoptotic process / nucleoplasm / identical protein binding / nucleus / metal ion binding / cytosol / cytoplasm
Similarity search - Function
XIAP/BIRC8, UBA domain / : / BIRC2/3-like, UBA domain / : / BIR repeat. / BIR repeat / Inhibitor of Apoptosis domain / BIR repeat profile. / Baculoviral inhibition of apoptosis protein repeat / Zinc finger, C3HC4 type (RING finger) ...XIAP/BIRC8, UBA domain / : / BIRC2/3-like, UBA domain / : / BIR repeat. / BIR repeat / Inhibitor of Apoptosis domain / BIR repeat profile. / Baculoviral inhibition of apoptosis protein repeat / Zinc finger, C3HC4 type (RING finger) / Zinc/RING finger domain, C3HC4 (zinc finger) / Herpes Virus-1 / Death-like domain superfamily / Ring finger / Zinc finger RING-type profile. / Zinc finger, RING-type / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
NICKEL (II) ION / E3 ubiquitin-protein ligase XIAP
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.2 Å
AuthorsLinke, K. / Nakatani, Y. / Day, C.L.
CitationJournal: Biochem.J. / Year: 2013
Title: Regulation of ubiquitin transfer by XIAP, a dimeric RING E3 ligase
Authors: Nakatani, Y. / Kleffmann, T. / Linke, K. / Condon, S.M. / Hinds, M.G. / Day, C.L.
History
DepositionDec 9, 2012Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Dec 19, 2012Provider: repository / Type: Initial release
Revision 1.1Jul 10, 2013Group: Database references
Revision 1.2Nov 8, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _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_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_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 / _struct_conn.pdbx_dist_value / _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_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: E3 ubiquitin-protein ligase XIAP
B: E3 ubiquitin-protein ligase XIAP
hetero molecules


Theoretical massNumber of molelcules
Total (without water)17,1107
Polymers16,7902
Non-polymers3205
Water77543
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1870 Å2
ΔGint-18 kcal/mol
Surface area7690 Å2
MethodPISA
Unit cell
Length a, b, c (Å)35.653, 48.672, 39.860
Angle α, β, γ (deg.)90.00, 97.24, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein E3 ubiquitin-protein ligase XIAP / Baculoviral IAP repeat-containing protein 4 / IAP-like protein / ILP / hILP / Inhibitor of ...Baculoviral IAP repeat-containing protein 4 / IAP-like protein / ILP / hILP / Inhibitor of apoptosis protein 3 / IAP-3 / hIAP-3 / hIAP3 / X-linked inhibitor of apoptosis protein / X-linked IAP


Mass: 8395.001 Da / Num. of mol.: 2 / Fragment: RING DOMAIN, UNP residues 429-497
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: API3, BIR4, IAP3, XIAP / Plasmid: PGEX6P3 / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3)
References: UniProt: P98170, Ligases; Forming carbon-nitrogen bonds; Acid-amino-acid ligases (peptide synthases)
#2: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-NI / NICKEL (II) ION


Mass: 58.693 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ni
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 43 / 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: 2.04 Å3/Da / Density % sol: 39.81 %
Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop / pH: 8
Details: 100mM Tris-HCl, 20% MME PEG2000, 10mM NiCl2, 1mM TCEP, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K

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Data collection

DiffractionMean temperature: 113 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU MICROMAX-007 HF / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV++ / Detector: IMAGE PLATE / Date: Sep 14, 2007
RadiationMonochromator: MIRROR / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.2→18.42 Å / Num. all: 6545 / Num. obs: 6536 / % possible obs: 94.5 % / Redundancy: 6 % / Biso Wilson estimate: 28.3 Å2 / Rmerge(I) obs: 0.066 / Rsym value: 0.066 / Net I/σ(I): 17.3
Reflection shellResolution: 2.2→2.32 Å / Redundancy: 4.7 % / Rmerge(I) obs: 0.213 / Mean I/σ(I) obs: 6.1 / Num. unique all: 839 / % possible all: 85

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Processing

Software
NameVersionClassification
CrystalCleardata collection
PHASERphasing
PHENIX(phenix.refine: 1.7.1_743)refinement
XDSdata reduction
SCALAdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 3EB5

3eb5


Resolution: 2.2→18.317 Å / Occupancy max: 1 / Occupancy min: 0.5 / FOM work R set: 0.8163 / SU ML: 0.59 / σ(F): 1.37 / Phase error: 25.15 / Stereochemistry target values: ML
RfactorNum. reflection% reflectionSelection details
Rfree0.2366 314 4.81 %RANDOM
Rwork0.1894 ---
all0.1916 6545 --
obs0.1916 6534 93.87 %-
Solvent computationShrinkage radii: 0.72 Å / VDW probe radii: 1 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 48.264 Å2 / ksol: 0.375 e/Å3
Displacement parametersBiso max: 70.7 Å2 / Biso mean: 30.5359 Å2 / Biso min: 16.57 Å2
Baniso -1Baniso -2Baniso -3
1--5.8037 Å2-0 Å21.3991 Å2
2---4.475 Å2-0 Å2
3---10.2787 Å2
Refinement stepCycle: LAST / Resolution: 2.2→18.317 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1006 0 5 43 1054
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0091028
X-RAY DIFFRACTIONf_angle_d1.1911379
X-RAY DIFFRACTIONf_chiral_restr0.079163
X-RAY DIFFRACTIONf_plane_restr0.005172
X-RAY DIFFRACTIONf_dihedral_angle_d14.306403
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Total num. of bins used: 2

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
2.2003-2.77070.28081590.20022940309990
2.7707-18.3180.21761550.18563280343598

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