Table 3 Bacterial strain and plasmid used in this studya

From: Production of diacetyl by metabolically engineered Enterobacter cloacae

Strain or plasmid

Characteristic(s)

Source or reference

Strain

  

E. coli DH5α

F, φ80 lacZΔM15, Δ(lacZYA-argF)U169, recA1, endA1, hsdR17, phoA, supE44λ, thi−1, gyrA96, relA1

Novagen

E. coli S17-1

recA, pro, thi, conjugative strain able to host λ-pir-dependent plasmids

31

E. cloacae SDM

Wild-type

5

SDM (ΔbudA)

E. cloacae SDM budA disruption mutant strain

This study

SDM (ΔbudAΔbudC)

E. cloacae SDM budA and budC disruption mutant strain

This study

SDM (ΔbudAΔgdh)

E. cloacae SDM budA and gdh disruption mutant strain

This study

SDM (ΔbudAΔbudCΔgdh)

E. cloacae SDM budA, budC and gdh disruption mutant strain

This study

Plasmid

  

pEASYBlunt

Apr, cloning vector

Transgen

pKR6K

Kmr, gene replacement vector derived from plasmid pK18mobsacB, R6K origin, Mob+ sacB

24

pKΔbudA

Kmr, pKR6K derivative, carries a 587 bp deletion of budA

This study

pKΔbudC

Kmr, pKR6K derivative, carries a 639 bp deletion of budC

This study

pKΔgdh

Kmr, pKR6K derivative, carries a 302 bp deletion of gdh

This study

  1. aApr, ampicilin resistance; Kmr, kanamycin resistance.