• Issue

    Acta Crystallographica Section F: Volume 81, Issue 6

    222-271
    June 2025

editorial

research communications

Crystal structures of the putative endoribonuclease L-PSP from Entamoeba histolytica

  • Pages: 226-234
  • First Published: 14 May 2025
Crystal structures of the putative endoribonuclease L-PSP from Entamoeba histolytica

The purification, crystallization and three crystal structures of the putative endoribonuclease L-PSP from E. histolytica are reported.

Structure of an Fe2+-binding-deficient mimiviral collagen lysyl hydroxylase

  • Pages: 235-240
  • First Published: 14 May 2025
Structure of an Fe2+-binding-deficient mimiviral collagen lysyl hydroxylase

Fe2+ binding stabilizes collagen lysyl hydroxylase dimers, although the underlying mechanism remains unclear. Here, we report the crystal structure of an Fe2+-binding-deficient mimiviral collagen lysyl hydroxylase, highlighting the conformational changes upon loss of Fe2+ binding.

Crystal structure of a recombinant Agaricus bisporus mushroom mannose-binding protein with a longer C-terminal region

  • Pages: 241-248
  • First Published: 14 May 2025
Crystal structure of a recombinant Agaricus bisporus mushroom mannose-binding protein with a longer C-terminal region

The crystal structure of a variant of recombinant A. bisporus mannose-binding protein with a longer C-terminal region was determined. The flexible C-terminal region may influence the sugar-binding ability.

Open Access

Crystal structure of ATP-dependent DNA ligase from Rhizobium phage vB_RleM_P10VF

  • Pages: 249-254
  • First Published: 14 May 2025
Crystal structure of ATP-dependent DNA ligase from Rhizobium phage vB_RleM_P10VF

We have determined the structure of the Rhizobium phage vB_RleM_P10VF DNA ligase bound to a nicked DNA duplex to 2.2 Å resolution. The DNA ligase exhibits a canonical DNA ligase-binding mode fully encircling the duplex and has considerable structural homology to T4 DNA ligase and the bacterial ATP-dependent DNA ligase from Prochlorococcus marinus.

Crystal structure of the C1 domain of the surface-layer protein SlpM from Lactobacillus brevis: a module involved in protein self-assembly

  • Pages: 255-262
  • First Published: 19 May 2025
Crystal structure of the C1 domain of the surface-layer protein SlpM from Lactobacillus brevis: a module involved in protein self-assembly

The 1.7 Å resolution structure of the C1 domain of the surface-layer protein SlpM from L. brevis is reported. The contact surfaces observed in the crystal lattice potentially contribute to the self-assembly process of SlpM.

Structural analysis of YcdY, a member of the redox-enzyme maturation protein family

  • Pages: 263-271
  • First Published: 19 May 2025
Structural analysis of YcdY, a member of the redox-enzyme maturation protein family

YcdY, a putative chaperone of the NarJ subfamily, forms a helix-bundle structure characterized by a dent on the concave side. The dent contains hydrophobic or conserved residues, presumably for the chaperone function of YcdY. Furthermore, we propose that YcdY may function as a chaperone for proteins other than the previously proposed YcdX.