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Recombinant nitrile hydratase from Herbaspirillum seropedicae as biocatalyst for selective hydration of 3-(4-chlorophenyl)glutaronitrile

重组固氮菌腈水合酶催化3-(4-氯苯基)戊二腈的选择性水解



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:1672-3678(2013)01-0023-06
RecombinantnitrilehydratasefromHerbaspirilumseropedicaeasbiocatalystfor
selectivehydrationof3(4chlorophenyl)glutaronitrile
LIQian,RENJie,FENGJinhui,WUQiaqing,ZHUDunming
(NationalEngineeringLaboratoryforIndustrialEnzymes,TianjinInstituteofIndustrialBiotechnology,
ChineseAcademyofSciences,Tianjin300308,China)
Abstract:Nitrilehydratase(NHase)isthekeyenzymesofnitrilemetabolism.GenomeMiningwasutilized
toacquiretheNhasegene(hsn1)fromHerbaspirilumseropedicaeSmR1.Theplasmidhsn1/pETDuet1was
constructedandexpressedinE.coliBL21.Therecombinantenzyme(HSN1)wasidentifiedasacobalt
dependenttypeNHase.ThesubstrateprofileofHSN1wasstudiedbythewholecelreactions.HSN1showed
theexcelentregioselectivityand theenantioselectivityforthehydration of3(4chlorophenyl)
glutaronitrile.The3(4chlorophenyl)4cyanobutyramidecouldbegiven,thusitcouldbeconvertedto
baclofenbyonestepchemicalreaction.
Keywords:3(4chlorophenyl)4cyanobutyramide;hydration;nitrilehydratase
  
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Fig.4 3(4chlorophenyl)glutaronitrilehydratedinto
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VL0

YX`àáRx|
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