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- PDB-1poa: INTERFACIAL CATALYSIS: THE MECHANISM OF PHOSPHOLIPASE A2 -

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Basic information

Entry
Database: PDB / ID: 1poa
TitleINTERFACIAL CATALYSIS: THE MECHANISM OF PHOSPHOLIPASE A2
ComponentsPHOSPHOLIPASE A2
KeywordsHYDROLASE
Function / homology
Function and homology information


phospholipase A2 / calcium-dependent phospholipase A2 activity / arachidonate secretion / lipid catabolic process / phospholipid metabolic process / phospholipid binding / positive regulation of fibroblast proliferation / fatty acid biosynthetic process / toxin activity / signaling receptor binding ...phospholipase A2 / calcium-dependent phospholipase A2 activity / arachidonate secretion / lipid catabolic process / phospholipid metabolic process / phospholipid binding / positive regulation of fibroblast proliferation / fatty acid biosynthetic process / toxin activity / signaling receptor binding / calcium ion binding / extracellular region
Similarity search - Function
Phospholipase A2, aspartic acid active site / Phospholipase A2 aspartic acid active site. / Phospholipase A2 / Phospholipase A2 / Phospholipase A2, histidine active site / Phospholipase A2 histidine active site. / Phospholipase A2 domain / Phospholipase A2 / Phospholipase A2 / Phospholipase A2 domain ...Phospholipase A2, aspartic acid active site / Phospholipase A2 aspartic acid active site. / Phospholipase A2 / Phospholipase A2 / Phospholipase A2, histidine active site / Phospholipase A2 histidine active site. / Phospholipase A2 domain / Phospholipase A2 / Phospholipase A2 / Phospholipase A2 domain / Phospholipase A2 domain superfamily / Up-down Bundle / Mainly Alpha
Similarity search - Domain/homology
Acidic phospholipase A2 1
Similarity search - Component
Biological speciesNaja atra (Chinese cobra)
MethodX-RAY DIFFRACTION / Resolution: 1.5 Å
AuthorsScott, D.L. / Otwinowski, Z. / Sigler, P.B.
Citation
Journal: Science / Year: 1990
Title: Interfacial catalysis: the mechanism of phospholipase A2.
Authors: Scott, D.L. / White, S.P. / Otwinowski, Z. / Yuan, W. / Gelb, M.H. / Sigler, P.B.
#1: Journal: Science / Year: 1990
Title: Crystal Structure of Cobra-Venom Phospholipase A2 in a Complex with a Transition-State Analogue
Authors: White, S.P. / Scott, D.L. / Otwinowski, Z. / Gelb, M.H. / Sigler, P.B.
History
DepositionSep 7, 1992Processing site: BNL
Revision 1.0Oct 31, 1993Provider: repository / Type: Initial release
Revision 1.1Mar 3, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Jul 17, 2019Group: Data collection / Other / Refinement description / Category: pdbx_database_status / software
Item: _pdbx_database_status.process_site / _software.classification
Revision 1.4Aug 14, 2019Group: Data collection / Refinement description / Category: software / Item: _software.classification
Revision 1.5Oct 23, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature / 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_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_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 / _struct_conn.pdbx_dist_value / _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_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 / _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

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Assembly

Deposited unit
A: PHOSPHOLIPASE A2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)13,2353
Polymers13,1551
Non-polymers802
Water2,720151
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)93.000, 93.000, 22.200
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number79
Space group name H-MI4

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Components

#1: Protein PHOSPHOLIPASE A2


Mass: 13154.642 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Naja atra (Chinese cobra) / References: UniProt: P00598, phospholipase A2
#2: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 151 / 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

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Sample preparation

CrystalDensity Matthews: 1.82 Å3/Da / Density % sol: 32.56 %
Crystal grow
*PLUS
pH: 6.8 / Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
110 mg/mlprotein1drop
210 mM1dropCaCl2
30.1 Msodium cacodylate1drop
420 %1,4-butanediol1drop
50.1 Msodium cacodylate1reservoir
650 %1,4-butanediol1reservoir
710 %methyl alcohol1reservoir

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Data collection

RadiationScattering type: x-ray
Radiation wavelengthRelative weight: 1
Reflection
*PLUS
Highest resolution: 1.5 Å / Rmerge(I) obs: 0.05

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Processing

Software
NameClassification
X-PLORmodel building
PROFFTrefinement
X-PLORrefinement
X-PLORphasing
RefinementRfactor Rwork: 0.143 / Rfactor obs: 0.143 / Highest resolution: 1.5 Å
Refinement stepCycle: LAST / Highest resolution: 1.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms914 0 2 151 1067
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.016
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg2.4
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Refinement
*PLUS
Highest resolution: 1.5 Å / Lowest resolution: 8.3 Å / σ(F): 1.5 / Rfactor obs: 0.143
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_angle_d2.4
X-RAY DIFFRACTIONx_plane_restr0.021

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