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Table 1 Strains and plasmids used in this study

From: Point mutation of V252 in neomycin C epimerase enlarges substrate-binding pocket and improves neomycin B accumulation in Streptomyces fradiae

 

Characteristics

Source

Strains

E. coli DH5α

E. coli BL21

General cloning host

General expressing host

The lab

The lab

E. coli ET12567

Demethylated strain containing pUZ8002 plasmid for conjugative transfer with actinomycetes

The lab

SF-2

Streptomyces fradiae, neomycin-producing strains induced by ARTP

(Yu et al. 2022)

BL21/pET28a

E. coli BL21 derivative harboring pET28a

The lab

BL21/pET28a-NeoN

E. coli BL21 derivative harboring pET28a-NeoN

The lab

BL21/pET28a-NeoNE34A

E. coli BL21 derivative harboring pET28a-NeoNE34A

This study

BL21/pET28a-NeoNT38A

E. coli BL21 derivative harboring pET28a-NeoNT38A

This study

BL21/pET28a-NeoND68A

E. coli BL21 derivative harboring pET28a-NeoND68A

This study

BL21/pET28a-NeoNK36A

E. coli BL21 derivative harboring pET28a-NeoNK36A

This study

BL21/pET28a-NeoNS251A

E. coli BL21 derivative harboring pET28a-NeoNS251A

This study

BL21/pET28a-NeoNV252A

E. coli BL21 derivative harboring pET28a-NeoNV252A

This study

ET12567/PPR-NeoN

E. coli ET12567 derivative harboring PPR-NeoN

This study

ET12567/PPR-NeoNV252A

E. coli ET12567 derivative harboring PPR-NeoNV252A

This study

ET12567/PKC1139-NeoN

E. coli ET12567 derivative harboring PKC1139-NeoN

This study

SF-2-NeoN

SF-2 derivative the expression of NeoN

This study

SF-2-NeoNV252A

SF-2 derivative the expression of NeoNV252A

This study

SF-2ΔNeoN

SF-2 derivative the deletion of neoN

This study

Plasmids

pET28a

Kanr; Expression vector for the expression of target protein

The lab

PPR (pSET152-PermE*)

E. coli–S. fradiae shuttle vector for the expression of target protein

The lab

pKC1139

E. coli–S. fradiae shuttle vector for the deletion of target protein

The lab

pET28a-NeoN

Derived from pET28a, for induced expression of NeoN

This study

pET28a-NeoNE34A

Derived from pET28a, for induced expression of NeoNE34A

 

pET28a-NeoNT38A

Derived from pET28a, for induced expression of NeoNT38A

This study

pET28a-NeoND68A

Derived from pET28a, for induced expression of NeoND68A

This study

pET28a-NeoNK36A

Derived from pET28a, for induced expression of NeoNK36A

This study

pET28a-NeoNS251A

Derived from pET28a, for induced expression of NeoNS251A

This study

pET28a-NeoNV252A

Derived from pET28a, for induced expression of NeoNV252A

This study

PPR-NeoN

Derived from PPR, for the expression of NeoN

This study

PPR-NeoNV252A

Derived from PPR, for the expression of NeoNV252A

This study

PKC1139-ΔNeoN

Derived from PKC1139, for the deletion of neoN

This study