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Literature summary for 3.4.23.B24 extracted from

  • Nam, S.E.; Kim, A.C.; Paetzel, M.
    Crystal structure of Bacillus subtilis signal peptide peptidase A (2012), J. Mol. Biol., 419, 347-358.
    View publication on PubMed

Crystallization (Commentary)

Crystallization (Comment) Organism
2.4-A resolution structure of Bacillus subtilis SppA catalytic domain reveals eight SppA molecules in the asymmetric unit, forming a dome-shaped octameric complex. Residue Ser147 may serve as the nucleophile and Lys199 may serve as the general base. The SppA S1 substrate specificity pocket is deep, narrow and hydrophobic, but with a polar bottom. The S3 pocket, which is constructed from two neighboring proteins, is shallower, wider and more polar than the S1 pocket Bacillus subtilis

Protein Variants

Protein Variants Comment Organism
K199A inactive Bacillus subtilis
S147A inactive Bacillus subtilis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
28000
-
8 * 36000, SDS-PAGE. 8 * 28000, SDS-PAGE after limited digestion using thermolysin Bacillus subtilis
36000
-
8 * 36000, SDS-PAGE. 8 * 28000, SDS-PAGE after limited digestion using thermolysin Bacillus subtilis
225400
-
gel filtration Bacillus subtilis

Organism

Organism UniProt Comment Textmining
Bacillus subtilis O34525
-
-
Bacillus subtilis 168 O34525
-
-

Subunits

Subunits Comment Organism
octamer 8 * 36000, SDS-PAGE. 8 * 28000, SDS-PAGE after limited digestion using thermolysin Bacillus subtilis

Synonyms

Synonyms Comment Organism
SppA
-
Bacillus subtilis