3CM1

Crystal structure of SsgA-like sporulation-specific cell division protein (YP_290167.1) from Thermobifida fusca YX-ER1 at 2.60 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural and functional characterizations of SsgB, a conserved activator of developmental cell division in morphologically complex actinomycetes.

Xu, Q.Traag, B.A.Willemse, J.McMullan, D.Miller, M.D.Elsliger, M.A.Abdubek, P.Astakhova, T.Axelrod, H.L.Bakolitsa, C.Carlton, D.Chen, C.Chiu, H.J.Chruszcz, M.Clayton, T.Das, D.Deller, M.C.Duan, L.Ellrott, K.Ernst, D.Farr, C.L.Feuerhelm, J.Grant, J.C.Grzechnik, A.Grzechnik, S.K.Han, G.W.Jaroszewski, L.Jin, K.K.Klock, H.E.Knuth, M.W.Kozbial, P.Krishna, S.S.Kumar, A.Marciano, D.Minor, W.Mommaas, A.M.Morse, A.T.Nigoghossian, E.Nopakun, A.Okach, L.Oommachen, S.Paulsen, J.Puckett, C.Reyes, R.Rife, C.L.Sefcovic, N.Tien, H.J.Trame, C.B.van den Bedem, H.Wang, S.Weekes, D.Hodgson, K.O.Wooley, J.Deacon, A.M.Godzik, A.Lesley, S.A.Wilson, I.A.van Wezel, G.P.

(2009) J Biol Chem 284: 25268-25279

  • DOI: 10.1074/jbc.M109.018564
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • SsgA-like proteins (SALPs) are a family of homologous cell division-related proteins that occur exclusively in morphologically complex actinomycetes. We show that SsgB, a subfamily of SALPs, is the archetypal SALP that is functionally conserved in al ...

    SsgA-like proteins (SALPs) are a family of homologous cell division-related proteins that occur exclusively in morphologically complex actinomycetes. We show that SsgB, a subfamily of SALPs, is the archetypal SALP that is functionally conserved in all sporulating actinomycetes. Sporulation-specific cell division of Streptomyces coelicolor ssgB mutants is restored by introduction of distant ssgB orthologues from other actinomycetes. Interestingly, the number of septa (and spores) of the complemented null mutants is dictated by the specific ssgB orthologue that is expressed. The crystal structure of the SsgB from Thermobifida fusca was determined at 2.6 A resolution and represents the first structure for this family. The structure revealed similarities to a class of eukaryotic "whirly" single-stranded DNA/RNA-binding proteins. However, the electro-negative surface of the SALPs suggests that neither SsgB nor any of the other SALPs are likely to interact with nucleotide substrates. Instead, we show that a conserved hydrophobic surface is likely to be important for SALP function and suggest that proteins are the likely binding partners.


    Organizational Affiliation

    Joint Center for Structural Genomics, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SsgA-like sporulation-specific cell division proteinA, B, C139Thermobifida fusca YXMutation(s): 0 
Gene Names: YP_290167.1Tfu_2111ssgB
Find proteins for Q47N25 (Thermobifida fusca (strain YX))
Explore Q47N25 
Go to UniProtKB:  Q47N25
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,B,CL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.232 
  • Space Group: P 41
  • Diffraction Data DOI: 10.18430/M3W88S Protein Diffraction
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.84α = 90
b = 64.84β = 90
c = 130.6γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PHENIXrefinement
SHELXphasing
MolProbitymodel building
XSCALEdata scaling
PDB_EXTRACTdata extraction
MAR345data collection
XDSdata reduction
SHELXDphasing
autoSHARPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-04-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Source and taxonomy, Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 1.3: 2019-07-24
    Changes: Data collection, Derived calculations, Refinement description