PMID- 11214325
OWN - NLM
STAT- MEDLINE
DCOM- 20010222
LR  - 20131121
IS  - 0028-0836 (Print)
IS  - 0028-0836 (Linking)
VI  - 409
IP  - 6820
DP  - 2001 Feb 1
TI  - The bacterial conjugation protein TrwB resembles ring helicases and F1-ATPase.
PG  - 637-41
AB  - The transfer of DNA across membranes and between cells is a central biological
      process; however, its molecular mechanism remains unknown. In prokaryotes,
      trans-membrane passage by bacterial conjugation, is the main route for horizontal
      gene transfer. It is the means for rapid acquisition of new genetic information, 
      including antibiotic resistance by pathogens. Trans-kingdom gene transfer from
      bacteria to plants or fungi and even bacterial sporulation are special cases of
      conjugation. An integral membrane DNA-binding protein, called TrwB in the
      Escherichia coli R388 conjugative system, is essential for the conjugation
      process. This large multimeric protein is responsible for recruiting the
      relaxosome DNA-protein complex, and participates in the transfer of a single DNA 
      strand during cell mating. Here we report the three-dimensional structure of a
      soluble variant of TrwB. The molecule consists of two domains: a
      nucleotide-binding domain of alpha/beta topology, reminiscent of RecA and DNA
      ring helicases, and an all-alpha domain. Six equivalent protein monomers
      associate to form an almost spherical quaternary structure that is strikingly
      similar to F1-ATPase. A central channel, 20 A in width, traverses the hexamer.
FAU - Gomis-Ruth, F X
AU  - Gomis-Ruth FX
AD  - Institut de Biologia Molecular de Barcelona, CSIC, Spain.
FAU - Moncalian, G
AU  - Moncalian G
FAU - Perez-Luque, R
AU  - Perez-Luque R
FAU - Gonzalez, A
AU  - Gonzalez A
FAU - Cabezon, E
AU  - Cabezon E
FAU - de la Cruz, F
AU  - de la Cruz F
FAU - Coll, M
AU  - Coll M
LA  - eng
SI  - PDB/1e9r
SI  - PDB/1e9s
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Nature
JT  - Nature
JID - 0410462
RN  - 0 (Bacterial Proteins)
RN  - 0 (DNA-Binding Proteins)
RN  - 0 (Escherichia coli Proteins)
RN  - 0 (trwB protein, E coli)
RN  - EC 3.6.3.14 (Proton-Translocating ATPases)
RN  - EC 3.6.4.- (DNA Helicases)
SB  - IM
CIN - Nature. 2001 Feb 1;409(6820):573, 575. PMID: 11214304
MH  - Bacterial Proteins/chemistry
MH  - *Conjugation, Genetic
MH  - Crystallography, X-Ray
MH  - DNA Helicases/chemistry
MH  - DNA-Binding Proteins/*chemistry/physiology
MH  - *Escherichia coli Proteins
MH  - Models, Molecular
MH  - Protein Conformation
MH  - Proton-Translocating ATPases/chemistry
EDAT- 2001/02/24 12:00
MHDA- 2001/03/03 10:01
CRDT- 2001/02/24 12:00
PHST- 2001/02/24 12:00 [pubmed]
PHST- 2001/03/03 10:01 [medline]
PHST- 2001/02/24 12:00 [entrez]
AID - 10.1038/35054586 [doi]
PST - ppublish
SO  - Nature. 2001 Feb 1;409(6820):637-41. doi: 10.1038/35054586.