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- PDB-1akn: STRUCTURE OF BILE-SALT ACTIVATED LIPASE -

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Basic information

Entry
Database: PDB / ID: 1akn
TitleSTRUCTURE OF BILE-SALT ACTIVATED LIPASE
ComponentsBILE-SALT ACTIVATED LIPASE
KeywordsHYDROLASE / SERINE ESTERASE / LIPID DEGRADATION / GLYCOPROTEIN / CARBOXYLIC ESTERASE / HYDROLASE()
Function / homology
Function and homology information


retinyl-palmitate esterase activity / acetylesterase / ceramide catabolic process / sterol esterase / sterol ester esterase activity / pancreatic juice secretion / acetylesterase activity / triacylglycerol lipase / triacylglycerol lipase activity / extracellular region / cytoplasm
Similarity search - Function
: / Carboxylesterase type B, conserved site / Carboxylesterases type-B signature 2. / Carboxylesterase type B, active site / Carboxylesterases type-B serine active site. / Carboxylesterase, type B / Carboxylesterase family / Alpha/Beta hydrolase fold, catalytic domain / Alpha/Beta hydrolase fold / Rossmann fold ...: / Carboxylesterase type B, conserved site / Carboxylesterases type-B signature 2. / Carboxylesterase type B, active site / Carboxylesterases type-B serine active site. / Carboxylesterase, type B / Carboxylesterase family / Alpha/Beta hydrolase fold, catalytic domain / Alpha/Beta hydrolase fold / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Bile salt-activated lipase
Similarity search - Component
Biological speciesBos taurus (cattle)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.8 Å
AuthorsWang, X. / Zhang, X.
CitationJournal: Structure / Year: 1997
Title: The crystal structure of bovine bile salt activated lipase: insights into the bile salt activation mechanism.
Authors: Wang, X. / Wang, C.S. / Tang, J. / Dyda, F. / Zhang, X.C.
History
DepositionMay 23, 1997Processing site: BNL
Revision 1.0May 27, 1998Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Jul 29, 2020Group: Data collection / Derived calculations / Structure summary
Category: chem_comp / entity ...chem_comp / entity / pdbx_chem_comp_identifier / pdbx_entity_nonpoly / struct_conn / struct_site / struct_site_gen
Item: _chem_comp.name / _chem_comp.type ..._chem_comp.name / _chem_comp.type / _entity.pdbx_description / _pdbx_entity_nonpoly.name / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _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
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 1.4Aug 2, 2023Group: Database references / Refinement description / Structure summary
Category: chem_comp / database_2 / pdbx_initial_refinement_model
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: BILE-SALT ACTIVATED LIPASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)63,8332
Polymers63,6111
Non-polymers2211
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)94.390, 94.390, 144.510
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein BILE-SALT ACTIVATED LIPASE / CARBOXYL ESTER LIPASE / STEROL ESTERASE / CHOLESTEROL ESTERASE / PANCREATIC LYSOPHOSPHOLIPASE


Mass: 63611.363 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Bos taurus (cattle) / Organ: PANCREAS / References: UniProt: P30122, triacylglycerol lipase
#2: 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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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.93 Å3/Da / Density % sol: 58 %
Crystal growpH: 7 / Details: pH 7.
Crystal grow
*PLUS
Temperature: 20 ℃ / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
112.5 mg/mlprotein1drop
20.9 Mammonium sulfate1drop
32.5 %isopropanol1drop
40.5 mMzwittergent 3-121drop
51.8 Mammonium sulfate1reservoir
65 %isopropanol1reservoir
71 mMzwittergent 3-121reservoir

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Data collection

DiffractionMean temperature: 288 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH2R / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS II / Detector: IMAGE PLATE / Date: Dec 1, 1996 / Details: MIRROR
RadiationMonochromator: NI FILTER / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.8→33.7 Å / Num. obs: 18614 / % possible obs: 98.4 % / Observed criterion σ(I): 0 / Redundancy: 2.53 % / Biso Wilson estimate: 66.1 Å2 / Rmerge(I) obs: 0.066 / Net I/σ(I): 13.8
Reflection shellResolution: 2.8→2.9 Å / Redundancy: 1.3 % / Rmerge(I) obs: 0.39 / Mean I/σ(I) obs: 2.8 / % possible all: 91.2
Reflection
*PLUS
Lowest resolution: 34 Å
Reflection shell
*PLUS
% possible obs: 99.8 % / Rmerge(I) obs: 0.391

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
X-PLOR3.1model building
X-PLOR3.1refinement
X-PLOR3.1phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1ACE

1ace
PDB Unreleased entry


Resolution: 2.8→8 Å
Details: AT FINAL STEP, ALL DATA IN 8 - 2.8 A WERE USED TO CARRY OUT A RESTRAINED TEMPERATURE FACTOR REFINEMENT BY TNT.
RfactorNum. reflection% reflectionSelection details
Rfree0.29 1706 9.3 %RANDOM
Rwork0.211 ---
obs0.211 17178 95.3 %-
Displacement parametersBiso mean: 47.6 Å2
Refinement stepCycle: LAST / Resolution: 2.8→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4261 0 14 0 4275
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.008
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_deg1.5
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d23.8
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.32
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
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PARHCSDX.PROTOPHCSDX.PRO
X-RAY DIFFRACTION2NAG.PARNAG.TOP
Software
*PLUS
Name: X-PLOR / Version: 3.1 / Classification: refinement
Refinement
*PLUS
Rfactor obs: 0.216 / Rfactor Rfree: 0.283
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg23.8
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.32

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