1TW5

beta1,4-galactosyltransferase mutant M344H-Gal-T1 in complex with Chitobiose

• PDB DOI: https://doi.org/10.2210/pdb1TW5/pdb

• Classification: TRANSFERASE
• Organism(s): Bos taurus
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2004-06-30 Released: 2004-12-14 
• Deposition Author(s): Ramakrishnan, B., Boeggeman, E., Qasba, P.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.257 
• R-Value Work: 0.195 
• R-Value Observed: 0.195 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 68.95 kDa 
• Atom Count: 5,139 
• Modelled Residue Count: 544 
• Deposited Residue Count: 572 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-1,4-galactosyltransferase 1	A, B	286	Bos taurus	Mutation(s): 2  Gene Names: B4GALT1 EC: 2.4.1.22 (PDB Primary Data), 2.4.1.90 (PDB Primary Data), 2.4.1.38 (PDB Primary Data)
UniProt
Find proteins for P08037 (Bos taurus) Explore P08037  Go to UniProtKB:  P08037

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C, D, E	2		N/A
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
UDH	G [auth A], O [auth B]	6-AMINOHEXYL-URIDINE-C1,5'-DIPHOSPHATE C15 H27 N3 O12 P2 MLWJBKPFDKRHBM-FMKGYKFTSA-N
MES	M [auth A]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N
SO4	H [auth A], I [auth A], J [auth A], K [auth A], P [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
DIO	L [auth A], Q [auth B]	1,4-DIETHYLENE DIOXIDE C4 H8 O2 RYHBNJHYFVUHQT-UHFFFAOYSA-N
MN	F [auth A], N [auth B]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.257 
• R-Value Work: 0.195 
• R-Value Observed: 0.195 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.37	α = 90
b = 92.55	β = 90
c = 143.41	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-12-14 
Deposition Author(s): Ramakrishnan, B., Boeggeman, E., Qasba, P.K.

Revision History  

• Version 1.0: 2004-12-14
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
• Version 2.1: 2021-10-27
  Changes: Database references, Structure summary
• Version 2.2: 2023-08-23
  Changes: Data collection, Refinement description