从四川成都、重庆、若尔盖,新疆乌鲁木齐,宁夏固原共采集土样319份进行肉毒梭状芽孢杆菌的分离。在若尔盖土样中分离到一株厌氧芽孢杆菌,按《伯杰细菌鉴定手册》(第八版)的方法进行了生物学测定、生理生化试验,并测定了其 DNA 中 G+C m...从四川成都、重庆、若尔盖,新疆乌鲁木齐,宁夏固原共采集土样319份进行肉毒梭状芽孢杆菌的分离。在若尔盖土样中分离到一株厌氧芽孢杆菌,按《伯杰细菌鉴定手册》(第八版)的方法进行了生物学测定、生理生化试验,并测定了其 DNA 中 G+C mol 为24.9%,鉴定为肉毒梭状芽孢杆菌,经血清学试验进一步鉴定为 A 型肉毒梭菌,编号为 As-3。展开更多
Glutamate dehydrogenase was purifiedfrom thecrudeextract of Pseudomonas pseudoal caligenes.Theenzyme had a molecular weight of 290 000 and was composed of six subunits with identical molecular weightof47 000 . The enz...Glutamate dehydrogenase was purifiedfrom thecrudeextract of Pseudomonas pseudoal caligenes.Theenzyme had a molecular weight of 290 000 and was composed of six subunits with identical molecular weightof47 000 . The enzyme was highly specific for NADP(H) and the sub strates.The biochemicalpropertiessuch askineticparametersand heatstability werealsoexamined. The purified GDHshowed considerableloss ofactivity uponfreezing.展开更多
The insecticidal protein from Pseudomonas pseudoaligenes was and exotoxin which had toxicity on locusts.In order to elucidate its molecular properties an amino acid sequence,the insecticidal protein was purified from ...The insecticidal protein from Pseudomonas pseudoaligenes was and exotoxin which had toxicity on locusts.In order to elucidate its molecular properties an amino acid sequence,the insecticidal protein was purified from the culture supernatant by ultrafiltration,ion\|exchange chromatography and gel filtration,and showed a single band on SDS\|PAGE.Analysis of the purified insecticidal protein dentified N\|terminal sequence of ten amino acid residues.Its polyclonal antibody was also obtained by immunizing rabbit with the insecticidal protein recovered form SDS\|PAGE gel.The antibody titer determined by ELISA method was 1∶12800,indicating that it had high reactivity.Western blot analysis revealed that the antibody was spectific to 26kD insecticidal protein,and did not cross\|react with other proteins produced by the bacterium,suggesting that a specific antibody with high titer was obtained and could be used for further investigations of the gene cloning and expression of insecticidal protein.展开更多
文摘从四川成都、重庆、若尔盖,新疆乌鲁木齐,宁夏固原共采集土样319份进行肉毒梭状芽孢杆菌的分离。在若尔盖土样中分离到一株厌氧芽孢杆菌,按《伯杰细菌鉴定手册》(第八版)的方法进行了生物学测定、生理生化试验,并测定了其 DNA 中 G+C mol 为24.9%,鉴定为肉毒梭状芽孢杆菌,经血清学试验进一步鉴定为 A 型肉毒梭菌,编号为 As-3。
文摘Glutamate dehydrogenase was purifiedfrom thecrudeextract of Pseudomonas pseudoal caligenes.Theenzyme had a molecular weight of 290 000 and was composed of six subunits with identical molecular weightof47 000 . The enzyme was highly specific for NADP(H) and the sub strates.The biochemicalpropertiessuch askineticparametersand heatstability werealsoexamined. The purified GDHshowed considerableloss ofactivity uponfreezing.
文摘The insecticidal protein from Pseudomonas pseudoaligenes was and exotoxin which had toxicity on locusts.In order to elucidate its molecular properties an amino acid sequence,the insecticidal protein was purified from the culture supernatant by ultrafiltration,ion\|exchange chromatography and gel filtration,and showed a single band on SDS\|PAGE.Analysis of the purified insecticidal protein dentified N\|terminal sequence of ten amino acid residues.Its polyclonal antibody was also obtained by immunizing rabbit with the insecticidal protein recovered form SDS\|PAGE gel.The antibody titer determined by ELISA method was 1∶12800,indicating that it had high reactivity.Western blot analysis revealed that the antibody was spectific to 26kD insecticidal protein,and did not cross\|react with other proteins produced by the bacterium,suggesting that a specific antibody with high titer was obtained and could be used for further investigations of the gene cloning and expression of insecticidal protein.
