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- PDB-1n5u: X-RAY STUDY OF HUMAN SERUM ALBUMIN COMPLEXED WITH HEME -

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Basic information

Entry
Database: PDB / ID: 1n5u
TitleX-RAY STUDY OF HUMAN SERUM ALBUMIN COMPLEXED WITH HEME
ComponentsSERUM ALBUMIN
KeywordsPLASMA PROTEIN
Function / homology
Function and homology information


cellular response to calcium ion starvation / exogenous protein binding / Ciprofloxacin ADME / HDL remodeling / enterobactin binding / Heme biosynthesis / negative regulation of mitochondrial depolarization / Prednisone ADME / Heme degradation / antioxidant activity ...cellular response to calcium ion starvation / exogenous protein binding / Ciprofloxacin ADME / HDL remodeling / enterobactin binding / Heme biosynthesis / negative regulation of mitochondrial depolarization / Prednisone ADME / Heme degradation / antioxidant activity / Aspirin ADME / toxic substance binding / Scavenging of heme from plasma / Recycling of bile acids and salts / cellular response to starvation / platelet alpha granule lumen / fatty acid binding / Post-translational protein phosphorylation / Cytoprotection by HMOX1 / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / pyridoxal phosphate binding / Platelet degranulation / protein-folding chaperone binding / blood microparticle / copper ion binding / endoplasmic reticulum lumen / Golgi apparatus / endoplasmic reticulum / protein-containing complex / DNA binding / extracellular space / extracellular exosome / extracellular region / identical protein binding / nucleus / cytoplasm
Similarity search - Function
Serum Albumin; Chain A, Domain 1 - #10 / Serum albumin/Alpha-fetoprotein/Afamin / ALB/AFP/VDB / Serum albumin, N-terminal / Serum albumin, conserved site / Serum albumin-like / Serum albumin family / Albumin domain signature. / Albumin domain profile. / serum albumin ...Serum Albumin; Chain A, Domain 1 - #10 / Serum albumin/Alpha-fetoprotein/Afamin / ALB/AFP/VDB / Serum albumin, N-terminal / Serum albumin, conserved site / Serum albumin-like / Serum albumin family / Albumin domain signature. / Albumin domain profile. / serum albumin / Serum Albumin; Chain A, Domain 1 / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
PROTOPORPHYRIN IX CONTAINING FE / MYRISTIC ACID / Albumin
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.9 Å
AuthorsWardell, M. / Wang, Z. / Ho, J.X. / Robert, J. / Ruker, F. / Ruble, J. / Carter, D.C.
Citation
Journal: Biochem.Biophys.Res.Commun. / Year: 2002
Title: The Atomic Structure of Human Methemalbumin at 1.9 A
Authors: Wardell, M. / Wang, Z. / Ho, J.X. / Robert, J. / Ruker, F. / Ruble, J. / Carter, D.C.
#1: Journal: Nature / Year: 1992
Title: Atomic Structure and Chemistry of Human Serum Albumin
Authors: He, X.M. / Carter, D.C.
#2: Journal: Science / Year: 1990
Title: Structure of Human Serum Albumin
Authors: Carter, D.C. / He, X.M.
#3: Journal: Science / Year: 1989
Title: Three-Dimensional Structure of Human Serum Albumin
Authors: Carter, D.C. / He, X.M. / Munson, S.H. / Twigg, P.D. / Gernert, K.M. / Broom, M.B. / Miller, T.Y.
#4: Journal: Eur.J.Biochem. / Year: 1994
Title: Preliminary Crystallographic Studies of Four Crystal Forms of Serum Albumin
Authors: Carter, D.C. / Chang, B. / Ho, J.X. / Keeling, K. / Krishnasami, Z.
History
DepositionNov 7, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 24, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: SERUM ALBUMIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)68,3307
Polymers66,5711
Non-polymers1,7586
Water7,710428
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)183.116, 37.909, 94.832
Angle α, β, γ (deg.)90.00, 105.04, 90.00
Int Tables number5
Space group name H-MC121

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Components

#1: Protein SERUM ALBUMIN /


Mass: 66571.219 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P02768
#2: Chemical
ChemComp-MYR / MYRISTIC ACID / Myristic acid


Mass: 228.371 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C14H28O2
#3: Chemical ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME / Heme B


Mass: 616.487 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C34H32FeN4O4
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 428 / 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: 2.39 Å3/Da / Density % sol: 50.1 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 7.5
Details: PEG 3350, potassium phosphate, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal grow
*PLUS
Method: unknown / Details: Carter, D.C., (1994) Eur. J. Biochem., 226, 1049.

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 5.0.3 / Wavelength: 1 / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Aug 8, 2001
RadiationMonochromator: SINGLE CRYSTAL, CYLINDRICALLY B / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength
IDWavelength (Å)Relative weight
111
211
ReflectionResolution: 1.9→50 Å / Num. obs: 45420 / % possible obs: 90.3 % / Observed criterion σ(F): -3 / Redundancy: 2.89 % / Biso Wilson estimate: 18.1 Å2 / Rmerge(I) obs: 0.043
Reflection shellResolution: 1.9→1.97 Å / Redundancy: 2.11 % / Rmerge(I) obs: 0.298 / % possible all: 68.3
Reflection
*PLUS
Highest resolution: 1.9 Å / % possible obs: 83.5 % / Redundancy: 2.6 % / Rmerge(I) obs: 0.037
Reflection shell
*PLUS
Highest resolution: 1.9 Å / % possible obs: 56.3 % / Rmerge(I) obs: 0.266

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Processing

Software
NameVersionClassification
MERLOTphasing
CNX2000.1refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.9→45.81 Å / Rfactor Rfree error: 0.006 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber / Details: RESOLUTION-DEPENDENT WEIGHTING SCHEME
RfactorNum. reflection% reflectionSelection details
Rfree0.28 2228 5 %RANDOM
Rwork0.235 ---
all-50341 --
obs-44335 88 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 57.3643 Å2 / ksol: 0.375589 e/Å3
Displacement parametersBiso mean: 29.4 Å2
Baniso -1Baniso -2Baniso -3
1-2.69 Å20 Å21.63 Å2
2--1.95 Å20 Å2
3----4.64 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.31 Å0.24 Å
Luzzati d res low-5 Å
Luzzati sigma a0.18 Å0.12 Å
Refinement stepCycle: LAST / Resolution: 1.9→45.81 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4636 0 123 428 5187
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_dihedral_angle_d18.1
X-RAY DIFFRACTIONc_improper_angle_d0.78
X-RAY DIFFRACTIONc_mcbond_it1.361.5
X-RAY DIFFRACTIONc_mcangle_it1.962
X-RAY DIFFRACTIONc_scbond_it2.282
X-RAY DIFFRACTIONc_scangle_it3.392.5
LS refinement shellResolution: 1.9→2.02 Å / Rfactor Rfree error: 0.019 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.299 259 4.7 %
Rwork0.25 5229 -
obs--66.3 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER.PARAM
X-RAY DIFFRACTION3MYR.PARAM
X-RAY DIFFRACTION4HEMIN.PARAM
Refinement
*PLUS
Highest resolution: 1.9 Å / Lowest resolution: 50 Å / % reflection Rfree: 5 % / Rfactor Rfree: 0.282 / Rfactor Rwork: 0.228
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_angle_deg1.19
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg18.1
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.78

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