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- PDB-2fy7: Crystal structure of the catalytic domain of the human beta1,4-ga... -

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Basic information

Entry
Database: PDB / ID: 2fy7
TitleCrystal structure of the catalytic domain of the human beta1,4-galactosyltransferase mutant M339H in apo form
ComponentsBeta-1,4-galactosyltransferase 1
KeywordsTRANSFERASE / M339H mutant / apo enzyme
Function / homology
Function and homology information


Defective B4GALT1 causes CDG-2d / galactosyltransferase activity / Interaction With Cumulus Cells And The Zona Pellucida / Defective B4GALT1 causes B4GALT1-CDG (CDG-2d) / Lactose synthesis / Keratan sulfate biosynthesis / lactose synthase / neolactotriaosylceramide beta-1,4-galactosyltransferase / beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase / N-acetyllactosamine synthase ...Defective B4GALT1 causes CDG-2d / galactosyltransferase activity / Interaction With Cumulus Cells And The Zona Pellucida / Defective B4GALT1 causes B4GALT1-CDG (CDG-2d) / Lactose synthesis / Keratan sulfate biosynthesis / lactose synthase / neolactotriaosylceramide beta-1,4-galactosyltransferase / beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase / N-acetyllactosamine synthase / N-acetyllactosamine synthase activity / positive regulation of circulating fibrinogen levels / beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase activity / Golgi trans cisterna / N-Glycan antennae elongation / penetration of zona pellucida / UDP-galactosyltransferase activity / regulation of acrosome reaction / lactose synthase activity / lactose biosynthetic process / oligosaccharide biosynthetic process / macrophage migration / development of secondary sexual characteristics / desmosome / acute inflammatory response / galactose metabolic process / Pre-NOTCH Processing in Golgi / positive regulation of epithelial cell proliferation involved in wound healing / binding of sperm to zona pellucida / protein N-linked glycosylation / angiogenesis involved in wound healing / Transferases; Glycosyltransferases; Hexosyltransferases / Golgi cisterna membrane / azurophil granule membrane / epithelial cell development / alpha-tubulin binding / beta-tubulin binding / extracellular matrix organization / secretory granule membrane / epithelial cell proliferation / filopodium / brush border membrane / lipid metabolic process / negative regulation of epithelial cell proliferation / manganese ion binding / basolateral plasma membrane / cell adhesion / positive regulation of apoptotic process / Golgi membrane / external side of plasma membrane / Neutrophil degranulation / Golgi apparatus / protein-containing complex / extracellular space / extracellular exosome / identical protein binding / membrane / plasma membrane
Similarity search - Function
Beta-1,4-galactosyltransferase / Galactosyltransferase, N-terminal / N-terminal region of glycosyl transferase group 7 / Galactosyltransferase, C-terminal / N-terminal domain of galactosyltransferase / Spore Coat Polysaccharide Biosynthesis Protein SpsA; Chain A / Spore Coat Polysaccharide Biosynthesis Protein SpsA; Chain A / Nucleotide-diphospho-sugar transferases / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
TRIETHYLENE GLYCOL / Beta-1,4-galactosyltransferase 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.7 Å
AuthorsRamakrishnan, B. / Ramasamy, V. / Qasba, P.K.
CitationJournal: J.Mol.Biol. / Year: 2006
Title: Structural Snapshots of beta-1,4-Galactosyltransferase-I Along the Kinetic Pathway.
Authors: Ramakrishnan, B. / Ramasamy, V. / Qasba, P.K.
History
DepositionFeb 7, 2006Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 14, 2006Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 20, 2021Group: Database references / Derived calculations / Category: database_2 / 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 / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Apr 3, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.5Oct 30, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Beta-1,4-galactosyltransferase 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)33,0743
Polymers32,7731
Non-polymers3002
Water5,927329
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)70.350, 137.770, 66.210
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number20
Space group name H-MC2221

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Components

#1: Protein Beta-1,4-galactosyltransferase 1


Mass: 32773.230 Da / Num. of mol.: 1 / Fragment: catalytic domain, residues 125-397 / Mutation: R337T, C338T, M340H
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: B4GALT1, GGTB2 / Plasmid: pET32a / Species (production host): Escherichia coli / Production host: Escherichia coli BL21 (bacteria) / Strain (production host): BL21 / References: UniProt: P15291, N-acetyllactosamine synthase
#2: Chemical ChemComp-PGE / TRIETHYLENE GLYCOL


Mass: 150.173 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C6H14O4
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 329 / 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 / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.45 Å3/Da / Density % sol: 49.72 %
Crystal growTemperature: 298 K / Method: vapor diffusion / pH: 5.6
Details: 50 mM sodium citrate buffer, 6% PEG 4000, pH 5.6, VAPOR DIFFUSION, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Jan 31, 2002 / Details: mirrors
RadiationMonochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.6→20 Å / Num. obs: 38674 / % possible obs: 90.3 % / Observed criterion σ(I): 1 / Redundancy: 3.3 % / Biso Wilson estimate: 21.9 Å2 / Rsym value: 0.049 / Net I/σ(I): 15.6
Reflection shellResolution: 1.6→1.66 Å / Mean I/σ(I) obs: 1.3 / Num. unique all: 2527 / Rsym value: 0.407 / % possible all: 60

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Processing

Software
NameVersionClassification
CNS1refinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1OOR

1oor


Resolution: 1.7→19.75 Å / Rfactor Rfree error: 0.004 / Data cutoff high absF: 1637527.64 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
Details: Residues 343 to 351 could not be traced due to low electron density
RfactorNum. reflection% reflectionSelection details
Rfree0.222 3393 10.1 %RANDOM
Rwork0.187 ---
obs0.187 33696 94.2 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 43.5119 Å2 / ksol: 0.347019 e/Å3
Displacement parametersBiso mean: 21.2 Å2
Baniso -1Baniso -2Baniso -3
1-1.71 Å20 Å20 Å2
2---2.16 Å20 Å2
3---0.44 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.22 Å0.19 Å
Luzzati d res low-6 Å
Luzzati sigma a0.17 Å0.16 Å
Refinement stepCycle: LAST / Resolution: 1.7→19.75 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2167 0 20 330 2517
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.015
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.7
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d25.4
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d1.24
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.261.5
X-RAY DIFFRACTIONc_mcangle_it1.862
X-RAY DIFFRACTIONc_scbond_it2.042
X-RAY DIFFRACTIONc_scangle_it3.022.5
LS refinement shellResolution: 1.7→1.81 Å / Rfactor Rfree error: 0.017 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.412 592 10.6 %
Rwork0.416 4995 -
obs--95 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2ion.paramion.top
X-RAY DIFFRACTION3water.paramwater.top
X-RAY DIFFRACTION4peg.parpeg.top

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