Putative integral membrane protein - Q9XA14 (Q9XA14_STRCO)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q9XA14: 1
 
Function
Transpeptidase that anchors surface proteins to the cell wall. Recognizes both Leu-Ala-x-Thr-Gly and Leu-Pro-x-Thr-Gly, with a preference for the former. Unlike the S.aureus sortase it cleaves not only the Thr-Gly motif but also the Ala-X bond; Ala-Glu and Ala-His bonds are better substrates than the Thr-Gly motif in vitro (PubMed:22296345, PubMed:27936128). Among its possible substrates are the chaplins ChpA, ChpB and ChpC; this enzyme is less important for ChpC attachment than is SrtE2. A double knockout mutant of srtE1 and srtE2 shows a developmental defect in aerial hyphae formation more dramatic than that due to chaplin deletion (PubMed:22296345). UniProt
Catalytic Activity
The enzyme catalyzes a cell wall sorting reaction in which a surface protein with a sorting signal containing a LPXTG motif is cleaved between the Thr and Gly residue. The resulting threonine carboxyl end of the protein is covalently attached to a pentaglycine cross-bridge of peptidoglycan. UniProt
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Domain
The probably cytoplasmic N-terminus cannot be deleted without destabilizing the protein. UniProt
  • Other Gene names: SCO3850
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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