24-04-2014 дата публикации
Номер: US20140113338A1
The invention relates to an alpha-ketopimelic acid decarboxylase enzyme that is a homologue of SEQ ID NO:2, comprising at least one mutation selected from a group of substitutions listed in the specification, to a method for preparing 5-formyl valeric acid (hereinafter also referred to as ‘5-FVA’), to a method for preparing 6-aminocaproic acid (hereinafter also referred to as ‘6-ACA’), to a method for preparing ε-caprolactam (hereinafter referred to as ‘caprolactam’) from 6-ACA, to a method for the preparation of adipic acid, to a method for preparing diaminohexane. The invention further relates to a host cell which may be used in a method according to the invention and to a polynucleotide encoding an alpha-ketopimelic acid decarboxylase enzyme. 1. An alpha-ketopimelic acid decarboxylase enzyme having at least 50% sequence identity with SEQ ID NO:2 , wherein the enzyme comprises at least one mutation selected from the group of substitutions corresponding to 072L , 072M , 101D , 101E , 101F , 101L , 104D , 104Q , 104W , 111M , 166K , 166R , 240A , 240G , 241L , 241N , 241R , 258R , 261A , 261D , 261G , 261W , 261Y , 284C , 284I , 284S , 284V , 290E , 290F , 290N , 290Q , 290Y , 291S , 377A , 377I , 377L , 377M , 377T , 377V , 381H , 382A , 382C , 382E , 382I , 382K , 382N , 382R , 382S , 382V , 382Y , 461I , 461 L , 461M , 461T , 465C , 465F , 465L , 465M , 532C , 532T , 534G , 535A , 535C , 535G , 535Q , 535S , 538A , 538C , 538G , 538H , 538L , 538S , 538W , 539H , 539L , 539Q , 539R , 539T , 541N , 541V , 542A , 542C , 542D , 542E , 542G , 542H , 542I , 542K , 542L , 542M , 542N , 542Q , 542R , 542S , 542T , 542V , 542W , 545C , 545D , 545E , 545F , 545K , 545R , 545S , 545T , 545V , 545W , 546A , 546E , 546F , 546G , 546H , 546P , 546T , 546V , 546W , 546Y and 547P in SEQ ID NO:2 , with the provisio that if the enzyme has only one mutation compared to SEQ ID NO:2 , that mutation is not 4611 or 538W in SEQ ID NO:2.2. An alpha-ketopimelic acid decarboxylase enzyme ...
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