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Structure paper

TitleTime-resolved visualization of IF1- and IF2-driven translation initiation in bacteria
Journal, issue, pagesTo Be Published
Publish dateDec 10, 2025 (structure data deposition date)
AuthorsGuerra GS / Zafar H / Ge X / Basu RS / Huang C / Hassan AH / Valdez NA / Brabencova S / Slamova L / Mandava CS ...Guerra GS / Zafar H / Ge X / Basu RS / Huang C / Hassan AH / Valdez NA / Brabencova S / Slamova L / Mandava CS / Gamper H / Hou Y / Gagnon MG / Sanyal S / Demo G
External linksSearch PubMed
MethodsEM (single particle)
Resolution2.9 - 3.1 Å
Structure data

56034

9tkn

EMDB-56034, PDB-9tkn:
30S pre-initiation complex with IF2 and IF1 bound (30S PIC-A)
Method: EM (single particle) / Resolution: 3.1 Å

56035

9tko

EMDB-56035, PDB-9tko:
30S pre-initiation complex with IF2 bound (30S PIC-B)
Method: EM (single particle) / Resolution: 3.0 Å

56036

9tkp

EMDB-56036, PDB-9tkp:
70S Initiation Complex with extended IF2 bound (70S IC-I)
Method: EM (single particle) / Resolution: 3.0 Å

56037

9tkq

EMDB-56037, PDB-9tkq:
E. coli 70S initiation complex bound to compact IF2-GDP (70S IC-II)
Method: EM (single particle) / Resolution: 3.1 Å

56038

9tkr

EMDB-56038, PDB-9tkr:
E. coli 70S elongation competent complex (70S EC)
Method: EM (single particle) / Resolution: 2.9 Å

74431

9zn2

EMDB-74431, PDB-9zn2:
Escherichia coli 70S ribosome initiation complex bound to IF1 and extended IF2-GDPCP (70S IC*)
Method: EM (single particle) / Resolution: 3.0 Å

Chemicals

ChemComp-GTP:
GUANOSINE-5'-TRIPHOSPHATE / GTP, energy-carrying molecule*YM

ChemComp-MG:
Unknown entry

ChemComp-FME:
N-FORMYLMETHIONINE

ChemComp-GDP:
GUANOSINE-5'-DIPHOSPHATE / GDP, energy-carrying molecule*YM

ChemComp-GCP:
PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER / GMP-PCP, energy-carrying molecule analogue*YM

ChemComp-ZN:
Unknown entry

ChemComp-HOH:
WATER

Source
  • escherichia coli (E. coli)
  • escherichia phage t4 (virus)
KeywordsRIBOSOME / Translation Initiation / time-resolved cryo-electron microscopy / GTP hydrolysis / initiation factor 1 / initiation factor 2 / E.coli / 70S / IF1 / IF2 / cryo-EM / tRNA

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