Peptide binding to arsenic-containing mineral and use thereof

Patent metadata

Field	Value
Publication number	US-2019345201-A1
Application number	US-201716333502-A
Country	US
Kind code	A1
Filing date	Sep 15, 2017
Priority date	Sep 15, 2016
Publication date	Nov 14, 2019
Grant date	—

Abstract

(Technical problems to be solved) Providing a method for selecting minerals containing arsenic (Means for solving the problems) A peptide comprising an amino acids sequence according to the following formula: (TSNQ)-(HPW)-(ED)-(HPWRK)-(LIVFA)-(LIVFA)-(LIVFA)-(TSNQ)-(HPW)-(LIVFA)-(TSNQ)-(LIVFA) wherein one amino acid is respectively selected from each group defined by paired parentheses.

First claim

1 - 8 . (canceled)

9 . A peptide comprising an amino acids sequence according to the following formula:
(TSNQ)-(HPW)-(ED)-(HPWRK)-(LIVFA)-(LIVFA)-(LIVFA)-(TSNQ)-(HPW)(LIVFA)-(TSNQ)-(LIVFA) wherein one amino acid is respectively selected from each group defined by paired parentheses.

10 . A peptide comprising a sequence which is at least 95% identical to the following sequence:
Asn-Pro-Glu-His-Ala-Ala-Phe-Ser-Pro-Val-Thr-Val.

11 . A peptide of claim 10 comprising a sequence which is at least 100% identical the following sequence:
Asn-Pro-Glu-His-Ala-Ala-Phe-Ser-Pro-Val-Thr-Val.

12 . A peptide of claim 11 according to the following sequence:
Asn-Pro-Glu-His-Ala-Ala-Phe-Ser-Pro-Val-Thr-Val.

13 . A peptide comprising a sequence derived from the following sequence by deleting, replacing, and/or adding 1-5 amino acid:
Asn-Pro-Glu-His-Ala-Ala-Phe-Ser-Pro-Val-Thr-Val.

14 . A composition for selecting and/or identifying a mineral containing arsenic, the composition comprising the peptide of claim 9 .

15 . A microorganism comprising on its surface the peptide of claim 9 .

16 . A particle comprising on its surface the peptide of claim 9 .

17 . A purification column comprising the peptide of claim 9 .

18 . A collector for use of froth flotation comprising the peptide of claim 9 .

19 . A depressant for use of froth flotation comprising the peptide of claim 9 .

20 . A method for isolating a mineral containing arsenic, the method comprising using the peptide of claim 9 .

21 . A method for selecting and/or identifying a mineral containing arsenic, the method comprising using the peptide of claim 9 .

22 . The method of claim 21 , the method comprising:
adding a microorganism into mineral dispersion, wherein the microorganism comprises the peptide on its surface and wherein the mineral contains arsenic; aggregating and precipitating the mineral; and recovering the aggregated and precipitated mineral.

23 . The method of claim 21 , the method comprising:
affixing the peptide to a carrier; introducing the carrier into a column for chromatography; and passing mineral dispersion through the column, wherein the mineral contains arsenic.

24 . The method of claim 21 , the method comprising:
affixing the peptide to a particle; and introducing the particle into mineral dispersion, wherein the mineral contains arsenic.

25 . The method of claim 21 , the method comprising froth floating with use of the peptide.

26 . The method of claim 25 , the froth floating comprising:
introducing a mixture, the mixture containing:
the mineral containing arsenic; and
pyrite and/or chalcopyrite; and
introducing the peptide and/or the microorganism containing the peptide as depressant, whereby the mineral containing arsenic is sorted to flotation tailings and the pyrite and/or chalcopyrite is sorted to concentrate.

27 . The method of claim 26 , wherein the mineral containing arsenic is enargite and the microorganism is phage.

28 . The method of claim 20 , wherein pH for dispersion of the mineral containing arsenic is 6 or more.

Assignees

• Shibaura Inst Tech
• Jx Nippon Mining & Metals Corp

Inventors

• Yamashita Mitsuo
• Miura Akira

Classifications

• C22B1/11

  Removing sulfur, phosphorus or arsenic other than by roasting · CPC title

• B03D2201/06

  Depressants · CPC title

• B03D2201/02

  Collectors · CPC title

• B03D1/023

  Carrier flotation; Flotation of a carrier material to which the target material attaches · CPC title

• C07K7/08 Primary

  having 12 to 20 amino acids (gastrins C07K14/595; somatostatins C07K14/655; melanotropins C07K14/68) · CPC title