1NF5 Transferase Transferase date Dec 13, 2002
title Crystal Structure Of Lactose Synthase, Complex With Glucose
authors B.Ramakrishnan, P.K.Qasba
compound source
Molecule: Alpha-Lactalbumin
Chain: A, C
Synonym: Lactose Synthase B Protein
Engineered: Yes
Organism_scientific: Mus Musculus
Organism_common: House Mouse
Organism_taxid: 10090
Gene: Lalba
Expression_system: Escherichia Coli Bl21
Expression_system_taxid: 511693
Expression_system_strain: Bl21
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet17a

Molecule: Beta-1,4-Galactosyltransferase
Chain: B, D
Ec: 2.4.1.22, 2.4.1.90, 2.4.1.38
Engineered: Yes

Organism_scientific: Bos Taurus
Organism_common: Cattle
Organism_taxid: 9913
Expression_system: Escherichia Coli Bl21
Expression_system_taxid: 511693
Expression_system_strain: Bl21
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet23a
symmetry Space Group: P 1 21 1
R_factor 0.190 R_Free 0.241
crystal
cell
length a length b length c angle alpha angle beta angle gamma
57.223 93.898 99.968 90.00 101.50 90.00
method X-Ray Diffractionresolution 2.00 Å
ligand BGC, CA, EDO, PG4 enzyme Transferase E.C.2.4.1.22 BRENDA
note 1NF5 supersedes 1J8W
related structures by homologous chain: 1FKV, 1NKH, 1NMM
Gene
Ontology
ChainFunctionProcessComponent
A, C


D, B


Primary referenceCrystal structure of lactose synthase reveals a large conformational change in its catalytic component, the beta1,4-galactosyltransferase-I., Ramakrishnan B, Qasba PK, J Mol Biol. 2001 Jun 29;310(1):205-18. PMID:11419947
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (144 Kb) [Save to disk]
  • Biological Unit Coordinates (1nf5.pdb1.gz) 71 Kb
  • Biological Unit Coordinates (1nf5.pdb2.gz) 71 Kb
  • LPC: Ligand-Protein Contacts for 1NF5
  • CSU: Contacts of Structural Units for 1NF5
  • Likely Quarternary Molecular Structure file(s) for 1NF5
  • Structure Factors (481 Kb)
  • Retrieve 1NF5 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1NF5 from S2C, [Save to disk]
  • Re-refined 1nf5 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1NF5 in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1NF5
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1NF5, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1nf5a_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1nf5b_, region B [Jmol] [rasmolscript] [script source]
        - Domain d1nf5c_, region C [Jmol] [rasmolscript] [script source]
        - Domain d1nf5d_, region D [Jmol] [rasmolscript] [script source]
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1nf5_C] [1nf5_A] [1nf5] [1nf5_D] [1nf5_B]
  • SWISS-PROT database: [P08037] [P29752]
  • Domain organization of [B4GT1_BOVIN] [LALBA_MOUSE] by SWISSPFAM
  • Domain found in 1NF5: [LYZ1 ] by SMART
  • Other resources with information on 1NF5
  • Community annotation for 1NF5 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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