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  • Description: 4.5 S RNA

Gene name scr
Essential yes
Product small cytoplasmic RNA (scRNA, 4.5S RNA),

signal recognition particle-like (SRP) component

Function presecretory protein translocation
Interactions involving this RNA in SubtInteract: Scr
Immediate neighbours yaaJ, dnaX
Gene sequence (+200bp) Protein sequence
Genetic context
Scr context.gif
This image was kindly provided by SubtiList

Categories containing this gene/protein

protein secretion, essential genes, ncRNA

This gene is a member of the following regulons

The gene

Basic information

  • Locus tag:

Phenotypes of a mutant

  • the gene is essential PubMed

Database entries

  • DBTBS entry: no entry
  • SubtiList entry: [1]
  • Structure:

Additional information


Basic information/ Evolution

  • Catalyzed reaction/ biological activity:

Extended information on the RNA

  • Kinetic information

Database entries

  • Structure:

Additional information

Expression and regulation

  • Sigma factor: SigA (both promoters)
  • Regulation:
  • Regulatory mechanism:
  • Additional information: transcribed as 354 nt precursor, cleaved at the 5' end by RNase III and at the 3' site by RNase J1 to yield a 275 nt molecule, final trimming to 271 nt sc RNA by RNase PH PubMed

Biological materials

  • Mutant:
  • Expression vector:
  • lacZ fusion:

Labs working on this gene/protein

David Bechhofer, Mount Sinai School, New York, USA Homepage

Your additional remarks


Shiyi Yao, Joshua B Blaustein, David H Bechhofer
Processing of Bacillus subtilis small cytoplasmic RNA: evidence for an additional endonuclease cleavage site.
Nucleic Acids Res: 2007, 35(13);4464-73
[PubMed:17576666] [] [DOI] (I p)

K Nakamura, S Yahagi, T Yamazaki, K Yamane
Bacillus subtilis histone-like protein, HBsu, is an integral component of a SRP-like particle that can bind the Alu domain of small cytoplasmic RNA.
J Biol Chem: 1999, 274(19);13569-76
[PubMed:10224127] [] [DOI] (P p)

T Yamazaki, S Yahagi, K Nakamura, K Yamane
Depletion of Bacillus subtilis histone-like protein, HBsu, causes defective protein translocation and induces upregulation of small cytoplasmic RNA.
Biochem Biophys Res Commun: 1999, 258(1);211-4
[PubMed:10222262] [] [DOI] (P p)

A Oguro, H Kakeshita, K Nakamura, K Yamane, W Wang, D H Bechhofer
Bacillus subtilis RNase III cleaves both 5'- and 3'-sites of the small cytoplasmic RNA precursor.
J Biol Chem: 1998, 273(31);19542-7
[PubMed:9677377] [] [DOI] (P p)

H Takamatsu, K Bunai, T Horinaka, A Oguro, K Nakamura, K Watabe, K Yamane
Identification of a region required for binding to presecretory protein in Bacillus subtilis Ffh, a homologue of the 54-kDa subunit of mammalian signal recognition particle.
Eur J Biochem: 1997, 248(2);575-82
[PubMed:9346318] [] [DOI] (P p)

K Kurita, K Honda, S Suzuma, H Takamatsu, K Nakamura, K Yamane
Identification of a region of Bacillus subtilis Ffh, a homologue of mammalian SRP54 protein, that is essential for binding to small cytoplasmic RNA.
J Biol Chem: 1996, 271(22);13140-6
[PubMed:8662730] [] [DOI] (P p)

T Shibata, Y Nakamura, K Nakamura, K Yamane
Depletion of small cytoplasmic RNA confers fusidic-acid resistance on Bacillus subtilis.
Biochem Biophys Res Commun: 1995, 210(2);317-23
[PubMed:7538759] [] [DOI] (P p)

M Nishiguchi, K Honda, R Amikura, K Nakamura, K Yamane
Structural requirements of Bacillus subtilis small cytoplasmic RNA for cell growth, sporulation, and extracellular enzyme production.
J Bacteriol: 1994, 176(1);157-65
[PubMed:7506707] [] [DOI] (P p)

K Nakamura, M Minemura, M Nishiguchi, K Honda, A Nakamura, K Yamane
Conserved residues and secondary structure found in small cytoplasmic RNAs from thirteen Bacillus species.
Nucleic Acids Res: 1992, 20(19);5227-8
[PubMed:1383945] [] [DOI] (P p)

K Nakamura, Y Imai, A Nakamura, K Yamane
Small cytoplasmic RNA of Bacillus subtilis: functional relationship with human signal recognition particle 7S RNA and Escherichia coli 4.5S RNA.
J Bacteriol: 1992, 174(7);2185-92
[PubMed:1372600] [] [DOI] (P p)

J C Struck, R K Hartmann, H Y Toschka, V A Erdmann
Transcription and processing of Bacillus subtilis small cytoplasmic RNA.
Mol Gen Genet: 1989, 215(3);478-82
[PubMed:2468993] [] [DOI] (P p)