Nova Patents
EP4403631A2

Serine proteases

Abstract

The present disclosure relates to serine proteases and variants thereof. Compositions containing the serine proteases are suitable for use in cleaning fabrics and hard surfaces, as well as in a variety of industrial applications.

EP4403631A2, drawing sheet 1
Sheet 1 of 14

Term

9.1 yearsto projected expiry

Projected expiry 27 October 2035, counted from filing; an application has no term until it is granted.

  1. Priority and filed
  2. Published
  3. Today
  4. Projected expiry

15 claims: 3 independent, 12 dependent

  1. 1
    A subtilisin, recombinant polypeptide or active fragment thereof, wherein said subtilisin, polypeptide or fragment comprises one or more motifs selected from:(i) DTGIXXXHXDLXXXXXGGXSVFTDSXXXXXXXDXXGH (SEQ ID NO: 11) motif, wherein the initial D is the active site Aspartic acid, the terminal H is the active site Histidine, and X is any amino acid;(ii) DTGIXXXHXDLX a XXXXGGXSVFTDSXXXXXXXDXXGH (SEQ ID NO: 12) motif, wherein the initial D is the active site Aspartic acid, the terminal H is the active site Histidine, X is any amino acid, and X a is T, S or F or X a is S or F;(iii) DTGIXXXHXDLXXXXXGGXSVFTDSXXX b XXXXDXXGH (SEQ ID NO: 13) motif, wherein the initial D is the active site Aspartic acid, the terminal H is the active site Histidine, X is any amino acid, and X b is S or R, or X b is S;(iv) DTGIXXXHXDLX a XXXXGGXSVFTDSXXX b XXXXDXXGH (SEQ ID NO: 14) motif, wherein the initial D is the active site Aspartic acid;the terminal H is the active site Histidine;X is any amino acid;X a is T, S or F or X a is S or F;and X b is S or R or X b is S;(v) DTGIXXXHXDLXANVXGGXSVFTDSANXDPFXDXXGH (SEQ ID NO: 15) motif, wherein the initial D is the active site Aspartic acid and the terminal H is the active site Histidine, and X is any amino acid;(vi) HXDLXANVXGGXS (SEQ ID NO: 16) motif, wherein the initial D is the active site Aspartic acid, the terminal GGXS is in the outermost strand of the central beta sheet, and X is any amino acid;(vii) GGXSVFTDSANXDPFXD (SEQ ID NO: 17) motif, wherein the initial GGXS is in the outermost strand of the central beta sheet and X is any amino acid;(viii) HXDLX a ANVXGGXS (SEQ ID NO: 18) motif, wherein the initial D is the active site Aspartic acid;the terminal GGXS is in the outermost strand of the central beta sheet;X a is T, S or F or X a is S or F;and X is any amino acid;(ix) GGXSVFTDSANX b DPFXD (SEQ ID NO: 19) motif, wherein the initial GGXS is in the outermost strand of the central beta sheet, X is any amino acid, and X b is S or R, or X b is S, (x) DTGIXXXHXDLXXXXXGGXSVFXDXXXXXXXXDXXGH (SEQ ID NO:22) motif, wherein the initial D is the active site Aspartic acid and the terminal H is the active site Histidine, and X is any amino acid;and (xi) DTGIXXXHXDLXXNVXGGXSVFXDXXNXDPXXDXXGH (SEQ ID NO:23) motif, wherein the initial D is the active site Aspartic acid and the terminal H is the active site Histidine, and X is any amino acid, and wherein the amino acid sequence of said subtilisin, polypeptide or fragment has at least 97% amino acid sequence identity to the amino acid sequence of SEQ ID NO: 3, and wherein said subtilisin, polypeptide or fragment has protease activity in the presence of a surfactant.
  2. 2
    The subtilisin, polypeptide or fragment of Claim 1, wherein said subtilisin, polypeptide or fragment retains:(i) at least 50% of its maximal protease activity at a pH range of 8 to 12 and/or at a temperature range of 55°C to 75°C, or (ii) at least 50% activity after 20 minutes at 40°C under stressed conditions, wherein the stressed conditions are in an LAS/EDTA assay and/or an OMO HDL assay.
  3. 3
    A composition comprising a surfactant and the subtilisin, polypeptide or fragment of Claim 1 or Claim 2.
  4. 4
    The composition of Claim 3, wherein the surfactant is selected from the group consisting of an anionic surfactant, a cationic surfactant, a zwitterionic surfactant, an ampholytic surfactant, a semi-polar non-ionic surfactant, and a combination thereof.
  5. 5
    The composition of Claim 3 or Claim 4, wherein the composition is a detergent composition.
  6. 6
    The composition of any one of Claims 3-5, wherein said composition further comprises at least one calcium ion and/or zinc ion;at least one stabilizer;from about 0.001% to about 1.0 weight % of said subtilisin, polypeptide or fragment;at least one bleaching agent;at least one adjunct ingredient;and/or one or more additional enzymes or enzyme derivatives selected from the group consisting of acyl transferases, alpha-amylases, beta-amylases, alpha-galactosidases, arabinosidases, aryl esterases, beta-galactosidases, carrageenases, catalases, cellobiohydrolases, cellulases, chondroitinases, cutinases, endo-beta-1, 4-glucanases, endo-beta-mannanases, esterases, exo-mannanases, galactanases, glucoamylases, hemicellulases, hyaluronidases, keratinases, laccases, lactases, ligninases, lipases, lipoxygenases, mannanases, oxidases, pectate lyases, pectin acetyl esterases, pectinases, pentosanases, peroxidases, phenoloxidases, phosphatases, phospholipases, phytases, polygalacturonases, proteases, pullulanases, reductases, rhamnogalacturonases, beta- glucanases, tannases, transglutaminases, xylan acetyl-esterases, xylanases, xyloglucanases, xylosidases, metalloproteases, additional serine proteases, and combinations thereof.
  7. 7
    The composition of any one of claims 3 to 6, wherein said composition:(i) contains phosphate or is phosphate-free and/or contains borate or is borate-free;and/or (ii) is formulated at a pH of from 8 to 12.
  8. 8
    A method of cleaning, comprising contacting a surface or an item in need of cleaning with the subtilisin, polypeptide or fragment of Claim 1 or Claim 2, or the composition of any one of Claims 3-7;and optionally further comprising the step of rinsing said surface or item after contacting said surface or item with said subtilisin, polypeptide, fragment, or composition.
  9. 9
    A polynucleotide comprising a nucleic acid sequence encoding the subtilisin, polypeptide or fragment of Claim 1 or Claim 2.
  10. 10
    The polynucleotide of Claim 9, wherein said polynucleotide comprises a nucleic acid sequence having at least 80% identity to SEQ ID NO:7.
  11. 11
    An expression vector comprising the polynucleotide of Claim 9 or Claim 10.
  12. 12
    A host cell comprising the expression vector of Claim 11.
  13. 13
    The host cell of Claim 12, wherein the host cell is a species selected from Bacillus spp., Streptomyces spp., Escherichia spp., Aspergillus spp., Trichoderma spp., Pseudomonas spp., Corynebacterium spp., Saccharomyces spp., and Pichia spp.
  14. 14
    A method for producing the subtilisin, polypeptide or fragment of Claim 1 or Claim 2, comprising:(a) stably transforming the host cell of any one of Claims 12-13 with the expression vector of Claim 11;(b) cultivating said transformed host cell under conditions suitable for said host cell to produce said subtilisin, polypeptide or fragment;and (c) recovering said subtilisin, polypeptide or fragment.
  15. 15
    The method of Claim 14, wherein said expression vector comprises a heterologous polynucleotide sequence encoding a heterologous pro-peptide, or one or both of a heterologous promoter and a polynucleotide sequence encoding a heterologous signal peptide.