Granted Patent
B2
US 12,312,385 · App. 18/516,332 · Granted May 27, 2025
MSP nanopores and uses thereof
Assignee:
THE UAB RESEARCH FOUNDATION
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Abstract
Provided herein are mutant single-chain Mycobacterium smegmatis porin (Msp) and uses thereof.
Claims (16)
1. A nucleic acid sequence encoding a mutant single-chain Mycobacterium smegmatis porin (Msp), wherein the nucleic acid sequence comprises:
(a) a first and second nucleotide sequence, wherein the first nucleotide sequence encodes a first Msp monomer sequence and the second nucleotide sequence encodes a second Msp monomer sequence; and
(b) a third nucleotide sequence encoding an amino acid linker sequence that links the first and second nucleotide sequence,
wherein at least one of the first and second Msp monomer sequences is a mutant Msp monomer sequence, wherein the mutant Msp monomer sequence has at least 95% sequence identity to SEQ ID NO: 1 and wherein the mutant Msp monomer sequence comprises (i) a P97F mutation; (ii) an amino acid with a positive charge at amino acid position 118, 134 and/or 139; and (iii) a mutation at amino acid position 90, amino acid position 91 and/or amino acid position 93.
2. The nucleic acid sequence of claim 1 , wherein the mutant Msp monomer sequence comprises a D90N, a D91N and a D93N mutation.
3. The nucleic acid sequence of claim 1 , wherein the mutant Msp monomer sequence comprises a P97F mutation, a D90N mutation, a D91N mutation, a D93N mutation, a D118R mutation, a D134R mutation and a E139K mutation.
4. The nucleic acid sequence of claim 1 , wherein the second Msp monomer sequence is selected from the group consisting of a wild-type MspA monomer, a mutant MspA monomer, or a sequence having at least 95% sequence identity to SEQ ID NO: 2, SEQ ID NO: 3 or SEQ ID NO: 4.
5. A nucleic acid sequence encoding a mutant single-chain Msp, wherein the nucleic acid sequence comprises:
(a) a first and second nucleotide sequence wherein the first nucleotide sequence encodes a first Msp monomer sequence and the second nucleotide sequence encodes a second Msp monomer sequence;
(b) a third, fourth, fifth, sixth, seventh, and eighth nucleotide sequence or any subset thereof, wherein the third, fourth, fifth, sixth, seventh, and eighth nucleotide sequences encode a third, fourth, fifth, sixth, seventh, and eighth Msp monomer sequence, respectively, wherein the first, second, third, fourth, fifth, sixth, seventh and eighth nucleotide sequence or any subset thereof are arranged consecutively in the nucleic acid; and
(c) at least one ninth nucleotide sequence encoding an amino acid linker sequence, wherein the ninth nucleotide sequence is positioned between any two consecutive nucleotide sequences encoding Msp monomer sequences
wherein at least one of the first and second Msp monomer sequences is a mutant Msp monomer sequence, wherein the mutant Msp monomer sequence has at least 95% sequence identity to SEQ ID NO: 1 and wherein the mutant Msp monomer sequence comprises (i) a P97F mutation; (ii) an amino acid with a positive charge at amino acid position 118, 134 and/or 139; and (iii) a mutation at amino acid position 90, amino acid position 91 and/or amino acid position 93.
6. The nucleic acid sequence of claim 5 , wherein the mutant Msp monomer sequence comprises a D90N, a D91N and a D93N mutation.
7. The nucleic acid sequence of claim 6 , wherein the mutant Msp monomer sequence comprises a P97F mutation, a D90N mutation, a D91N mutation, a D93N mutation, a D118R mutation, a D134R mutation and a E139K mutation.
8. The nucleic acid sequence of claim 5 , wherein one or more of the third, fourth, fifth, sixth, seventh or eighth Msp monomer sequence is selected from the group consisting of a wild-type MspA monomer, a mutant MspA monomer, or an MspA having at least 95% sequence identity to SEQ ID NO: 2, SEQ ID NO: 3 or SEQ ID NO: 4.
9. A vector comprising the nucleic acid sequence of claim 1 .
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Feb 13, 2024
From: NIEDERWEIS, MICHAEL; PAVLENOK, MIKHAIL
To: THE UAB RESEARCH FOUNDATION
Reel/Frame 066446/0751 →
Continuity (6)
Division
15304183
Provisional Application
61980415
· Apr 16, 2014
Provisional Application
61980393
· Apr 16, 2014
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