1HTO Ligase date Jan 01, 2001
title Crystallographic Structure Of A Relaxed Glutamine Synthetase From Mycobacterium Tuberculosis
authors H.S.Gill, D.Eisenberg, Tb Structural Genomics Consortium (Tbsgc)
compound source
Molecule: Glutamine Synthetase
Chain: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X;
Synonym: Gs, Glutamate--Ammonia Ligase 1
Ec: 6.3.1.2
Engineered: Yes
 Organism_scientific: Mycobacterium Tuberculosis
Organism_common: Bacteria
Expression_system: Escherichia Coli
Expression_system_common: Bacteria
Expression_system_strain: Ymc21e
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Ptrchisb
symmetry Space Group: P 21 21 21
R_factor 0.227
crystal
cell
length a length b length c angle alpha angle beta angle gamma
207.720 257.690 274.500 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.40 Å
ligand AMP, CIT, MN enzyme Glutamate-ammonia ligase;. Glutamine synthetase;. Glutamylhydroxamic synthetase;. L-glutamine synthetase. Ligase E.C.6.3.1.2 BRENDA
similarity Belongs to the glutamine synthetase family.[Gln-synt_C]
subunit Oligomer of 12 subunits arranged in the form of two hexagons (by similarity).
catalytic activ. Atp + l-glutamate + nh(3) = adp + phosphate + l-glutamine.
subcellular loc. Cytoplasm (by similarity).
enzyme regulation The activity of this enzyme is controlled by adenylation under conditions of abundant glutamine. The fully adenylated enzyme complex is inactive (by similarity).
gene MTCY427.01 (M. tuberculosis); glnA (S. typhimurium)
Primary referenceMulticopy crystallographic refinement of a relaxed glutamine synthetase from Mycobacterium tuberculosis highlights flexible loops in the enzymatic mechanism and its regulation., Gill HS, Pfluegl GM, Eisenberg D, Biochemistry 2002 Aug 6;41(31):9863-72. PMID:12146952
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (2121 Kb) [Save to disk]
  • Biological Unit Coordinates (1hto.pdb1.gz) 1058 Kb
  • Biological Unit Coordinates (1hto.pdb2.gz) 930 Kb
  • CSU: Contacts of Structural Units for 1HTO
  • Likely Quarternary Molecular Structure file(s) for 1HTO
  • Structure Factors (4251 Kb)
  • Retrieve 1HTO in mmCIF format [Save to disk]
    • View 1HTO in 3D
  • 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.
  • On AstexViewer, from MSD-EBI (viewer documentation).
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    • Visual 3D analysis of 1HTO
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  • GRASS (Graphical Representation and Analysis of Structure Server)
  • Cartoon representation from PDB Cartoon
  • 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
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1HTO, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1htoa1, region A:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htoa2, region A:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htob1, region B:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htob2, region B:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htoc1, region C:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htoc2, region C:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htod1, region D:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htod2, region D:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htoe1, region E:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htoe2, region E:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htof1, region F:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htof2, region F:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htog1, region G:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htog2, region G:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htoh1, region H:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htoh2, region H:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htoi1, region I:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htoi2, region I:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htoj1, region J:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htoj2, region J:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htok1, region K:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htok2, region K:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htol1, region L:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htol2, region L:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htom1, region M:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htom2, region M:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1hton1, region N:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1hton2, region N:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htoo1, region O:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htoo2, region O:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htop1, region P:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htop2, region P:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htoq1, region Q:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htoq2, region Q:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htor1, region R:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htor2, region R:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htos1, region S:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htos2, region S:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htot1, region T:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htot2, region T:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htou1, region U:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htou2, region U:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htov1, region V:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htov2, region V:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htow1, region W:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htow2, region W:101-468 [Jmol] [rasmolscript] [script source]
        - Domain d1htox1, region X:1-100 [Jmol] [rasmolscript] [script source]
        - Domain d1htox2, region X:101-468 [Jmol] [rasmolscript] [script source]
  • Fold representative 1hto from FSSP and Dali (Families of Structurally Similar Proteins)
  • 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: [1hto_H] [1hto_G] [1hto_I] [1hto_J] [1hto_V] [1hto_M] [1hto_P] [1hto_S] [1hto_C] [1hto_N] [1hto_L] [1hto_E] [1hto_R] [1hto_K] [1hto_F] [1hto_O] [1hto_Q] [1hto_B] [1hto_T] [1hto_U] [1hto_A] [1hto_X] [1hto_D] [1hto_W]
    • Other resources with information on 1HTO
  • InterPro: IPR004809 , IPR008146 , IPR008147 , IPR001637
  • MMDB (Entrez's Structure Database)
    • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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