Group Leader

Jan Löwe

Prokaryotic cytoskeletons and other molecular machines

Jan Löwe
Group Members
  • Danguole Ciziene
  • James Collier
  • Tina Drobnic
  • Liam Gregory
  • James Hooker
  • Lisa Kashammer
  • Martin McAndrew
  • Alisa Mondry
  • Leah Pitman
  • Lukas Rohland
  • Fusinita van den Ent
  • James Warren
  • Yue Zhang

We aim to understand molecular machines at the atomic level while answering important questions relating to cell biology. Filaments are ancient molecular machines that enable molecules to access length scales of microns, the size of cells.

Our main areas of research are the cytoskeletons of archaea and bacteria. We were involved in the discovery that these prokaryotes contain both actin and tubulin-like proteins that polymerise into filaments similar to their counterparts in eukaryotes.

The Z-ring orchestrating bacterial cell division contains FtsZ, a polymerising tubulin homologue
FtsZ, a tubulin homologue orchestrates bacterial cell division by forming a ring structure at mid cell, which we investigate in cells, through in vitro reconstitutions and by structural biology of purified components.

Using structural, imaging and cell biological methods, we investigate the mechanisms that enable cytomotive and non-dynamic filament systems to orchestrate essential life processes such as cell division, cell growth, DNA segregation and morphogenesis.

We also work on Structural Maintenance of Chromosomes (SMC) complexes, both bacterial and eukaryotic, in the shape of condensins and cohesins. We are currently using cryo-EM in order to uncover the precise molecular mechanisms employed by these important and ubiquitous facilitators of chromosome biology.

Cryo-EM structures of cohesin, condensin and bacterial MukBEF
SMC complexes use topological DNA entrapment both in cis and in trans to shape chromosomes. Cryo-EM of MukBEF has revealed how this is achieved.

Selected Publications

Mechanism of DNA capture by the MukBEF SMC complex and its inhibition by a viral DNA mimic.Bürmann F, Clifton B, Koekemoer S, Wilkinson OJ, Kimanius D, Dillingham MS, Löwe JCell 188(9): 2465-2479.e14 (2025)
Cryo-EM structure of the bacterial divisome core complex and antibiotic target FtsWIQBL.Käshammer L, van den Ent F, Jeffery M, Jean NL, Hale VL, Löwe JNat Microbiol 8(6): 1149-1159 (2023)
Diverse cytomotive actins and tubulins share a polymerization switch mechanism conferring robust dynamics.Wagstaff JM, Planelles-Herrero VJ, Sharov G, Alnami A, Kozielski F, Derivery E, Löwe JSci Adv 9(13): eadf3021 (2023)
Bacterial divisome protein FtsA forms curved antiparallel double filaments when binding to FtsN.Nierhaus T, McLaughlin SH, Bürmann F, Kureisaite-Ciziene D, Maslen SL, Skehel JM, Yu CWH, Freund SMV, Funke LFH, Chin JW, Löwe JNat Microbiol 7(10): 1686-1701 (2022)