SacP

• Description: trigger enzyme: sucrose-specific phosphotransferase system, EIIBC component of the PTS
  
  

Gene name	sacP
Synonyms	ipa-49d
Essential	no
Product	trigger enzyme: sucrose-specific phosphotransferase system, EIIBC component
Function	sucrose uptake and phosphorylation, control of SacT activity
Gene expression levels in SubtiExpress: sacP
Interactions involving this protein in SubtInteract: SacP
Metabolic function and regulation of this protein in SubtiPathways: Sugar catabolism
MW, pI	49 kDa, 7.026
Gene length, protein length	1383 bp, 461 aa
Immediate neighbours	sacA, ywcJ
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

phosphotransferase systems, utilization of specific carbon sources, transcription factors and their control, trigger enzyme, membrane proteins, phosphoproteins

This gene is a member of the following regulons

CcpA regulon, SacT regulon

The gene

Basic information

• Locus tag: BSU38050

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Protein EIIB N(pi)-phospho-L-histidine/cysteine + sugar = protein EIIB + sugar phosphate (according to Swiss-Prot)

• Protein family: PTS permease, sucrose permease (Scr) family PubMed

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:
  • cell membrane (according to Swiss-Prot)

Database entries

• Structure:

• UniProt: P05306

• KEGG entry: [3]

• E.C. number: 2.7.1.69

Expression and regulation

• Operon: sacP-sacA-ywdA PubMed

• Expression browser: sacP PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • induced by sucrose (SacT) PubMed
  • repressed by glucose (CcpA)

• Regulatory mechanism:
  • SacT: binding to a RNA switch results in transcription antitermination PubMed
  • CcpA: transcription repression

• Additional information:

Biological materials

• Mutant:

• Expression vector:
  • for expression, purification of the EIIB domain in E. coli with N-terminal His-tag, in pWH844: pGP429, available in Stülke lab
  • for expression, purification of the EIIB domain in E. coli with N-terminal His-tag and thrombin cleavage site, in pGP570: pGP436, available in Stülke lab

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Bogumiła C Marciniak, Monika Pabijaniak, Anne de Jong, Robert Dűhring, Gerald Seidel, Wolfgang Hillen, Oscar P Kuipers
High- and low-affinity cre boxes for CcpA binding in Bacillus subtilis revealed by genome-wide analysis.
BMC Genomics: 2012, 13;401
[PubMed:22900538] [WorldCat.org] [DOI] (I e)

Ulrike Mäder, Georg Homuth, Christian Scharf, Knut Büttner, Rüdiger Bode, Michael Hecker
Transcriptome and proteome analysis of Bacillus subtilis gene expression modulated by amino acid availability.
J Bacteriol: 2002, 184(15);4288-95
[PubMed:12107147] [WorldCat.org] [DOI] (P p)

Jonathan Reizer, Steffi Bachem, Aiala Reizer, Maryvonne Arnaud, Milton H Saier, Jörg Stülke
Novel phosphotransferase system genes revealed by genome analysis - the complete complement of PTS proteins encoded within the genome of Bacillus subtilis.
Microbiology (Reading): 1999, 145 ( Pt 12);3419-3429
[PubMed:10627040] [WorldCat.org] [DOI] (P p)

M Arnaud, M Débarbouillé, G Rapoport, M H Saier, J Reizer
In vitro reconstitution of transcriptional antitermination by the SacT and SacY proteins of Bacillus subtilis.
J Biol Chem: 1996, 271(31);18966-72
[PubMed:8702561] [WorldCat.org] [DOI] (P p)

S L Sutrina, P Reddy, M H Saier, J Reizer
The glucose permease of Bacillus subtilis is a single polypeptide chain that functions to energize the sucrose permease.
J Biol Chem: 1990, 265(30);18581-9
[PubMed:2120236] [WorldCat.org] (P p)

M Debarbouille, M Arnaud, A Fouet, A Klier, G Rapoport
The sacT gene regulating the sacPA operon in Bacillus subtilis shares strong homology with transcriptional antiterminators.
J Bacteriol: 1990, 172(7);3966-73
[PubMed:2163394] [WorldCat.org] [DOI] (P p)

A Fouet, M Arnaud, A Klier, G Rapoport
Bacillus subtilis sucrose-specific enzyme II of the phosphotransferase system: expression in Escherichia coli and homology to enzymes II from enteric bacteria.
Proc Natl Acad Sci U S A: 1987, 84(24);8773-7
[PubMed:3122206] [WorldCat.org] [DOI] (P p)