PROCESS FOR THE INACTIVATION OF GENES WHICH CODE FOR ENZYMES FOR THE CATABOLISM OF PHENYL ACETATE, PLASMIDS INVOLVED IN SUCH PROCESS AND STRAINS TRANSFORMED THEREWITH

PURPOSE: Process for inactivating genes which code for enzymes of the phenyl acetate catabolism, plasmids containing them and strains transformed therewith are provided which increase the production of penicillin by inactivating the phenyl acetate catabolism using a DNA compound. CONSTITUTION: Proce...

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Hauptverfasser: MINGOT ASCENCAO JOSE MANUEL, RODRIGUEZ SAIZ, MARTA, DIEZ GARCIA, BRUNO, SALTO MALDONADO, FRANCISCO, FERNANDEZ CANON, JOSE MANUEL, VITALLER ALBA, ALEJANDRO, PENALVA SOTO, MIGUEL ANGEL, BARREDO FUENTE, JOSE LUIS
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:PURPOSE: Process for inactivating genes which code for enzymes of the phenyl acetate catabolism, plasmids containing them and strains transformed therewith are provided which increase the production of penicillin by inactivating the phenyl acetate catabolism using a DNA compound. CONSTITUTION: Process for inactivating genes which code for enzymes of the phenyl acetate catabolism, plasmids containing them and strains transformed therewith are described. The process applies preferably to the gene pahcA of A. nidulans and to the gene pahA of P. chrysogenum, genes which code respectively for competitor enzymes for this substrate with the biosynthetic enzymes of penicillin. The non expression of the enzymes favors the synthesis of this antibiotic, increasing its production, with a smaller demand of phenyl acetate per culture unit. 본 발명은 페닐아세테이트 분해대사 효소를 암호화하는 유전자의 불활성화 방법, 상기 유전자를 함유하는 플라스미드, 및 상기 유전자를 이용하여 형질변환시킨 균주에 관한 것이다. 상기 방법은 아스퍼길러스 니듈란스의유전자 및 페니실륨 크리소게넘의유전자에 적용하는 것이 바람직한데, 상기 효소를 각각 암호화하는 상기 유전자는 상기 기질을 두고 페니실린 생합성 효소와 경쟁한다. 이러한 효소들의 비발현(non-expression)은 상기 항생물질의 합성에 이로운 영향을 미쳐서, 배지 유니트당 더욱 낮은 페닐아세테이트를 필요로하면서도 상기 항생물질의 수율을 증가시킨다.