1MSS

LARGE SCALE STRUCTURAL REARRANGEMENTS OF THE FRONT LOOPS IN MONOMERISED TRIOSEPHOSPHATE ISOMERASE, AS DEDUCED FROM THE COMPARISON OF THE STRUCTURAL PROPERTIES OF MONOTIM AND ITS POINT MUTATION VARIANT MONOSS

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Work: 0.198 
  • R-Value Observed: 0.198 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history. 


Literature

Three new crystal structures of point mutation variants of monoTIM: conformational flexibility of loop-1, loop-4 and loop-8.

Borchert, T.V., Kishan, K.V., Zeelen, J.P., Schliebs, W., Thanki, N., Abagyan, R., Jaenicke, R., Wierenga, R.K.

(1995) Structure 3: 669-679

  • DOI: 10.1016/s0969-2126(01)00202-7
  • Primary Citation of Related Structures:  
    1MSS, 1TTI, 1TTJ

  • PubMed Abstract: 

    • Wild-type triosephosphate isomerase (TIM) is a very stable dimeric enzyme. This dimer can be converted into a stable monomeric protein (monoTIM) by replacing the 15-residue interface loop (loop-3) by a shorter, 8-residue, loop. The crystal structure of monoTIM shows that two active-site loops (loop-1 and loop-4), which are at the dimer interface in wild-type TIM, have acquired rather different structural properties ...

    Wild-type triosephosphate isomerase (TIM) is a very stable dimeric enzyme. This dimer can be converted into a stable monomeric protein (monoTIM) by replacing the 15-residue interface loop (loop-3) by a shorter, 8-residue, loop. The crystal structure of monoTIM shows that two active-site loops (loop-1 and loop-4), which are at the dimer interface in wild-type TIM, have acquired rather different structural properties. Nevertheless, monoTIM has residual catalytic activity.

    Related Citations: 
    • The Crystal Structure of an Engineered Monomeric Triose Phosphate Isomerase, Monotim: The Correct Modelling of an Eight-Residue Loop
      Borchert, T.V., Abagyan, R., Radha Kishan, K.V., Zeelen, J.P., Wierenga, R.K.
      (1993) Structure 1: 205
    Organizational Affiliation: 

    EMBL, Heidelberg, Germany.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRIOSEPHOSPHATE ISOMERASEA, B243Trypanosoma brucei bruceiMutation(s): 9 
EC: 5.3.1.1
UniProt
Find proteins for P04789 (Trypanosoma brucei brucei)
Explore P04789 
Go to UniProtKB:  P04789
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04789
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Work: 0.198 
  • R-Value Observed: 0.198 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.57α = 94.47
b = 46.58β = 69.82
c = 66.65γ = 75.83
Software Package:
Software NamePurpose
X-PLORmodel building
TNTrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

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View more in-depth experimental data
Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-09-30
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-17
    Changes: Data collection, Other, Refinement description
  • Version 1.4: 2019-08-14
    Changes: Data collection, Refinement description
  • Version 1.5: 2021-11-03
    Changes: Database references