[Expression of Vitreoscilla hemoglobin and nitrilase in the yeast Pichia pastoris].
The expression of the vgb gene in vivo could improve the fermentation density and then contribute the extracellular secretion of the product of bxn gene. Constructed the recombination plasmid pPIC9K-vgbbxn and transformed into Pichia pastoris GS115. The results of PCR and SDS-PAGE indicate that the vgb gene and bxn gene had integrated into the genome of Pichia pastoris GS115 and expressed in efficient level. Also, the protein activity of their products had been verified respectively. Shake flask fermentation experiments showed that the presence of VHb in yeast Pichia pastoris efficiently enhanced cell growth and secretive expression of bxn gene under hypoxic habitats.
Institute of Agrobiological Genetics and Physiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
Qing-Lu
QL
Wang
Rui
R
Zhang
Wan-Chao
WC
Ni
Yu-Quan
YQ
Chen
San-Dui
SD
Guo
D000619:Aminohydrolases / Q000235:genetics* / Q000378:metabolism; D001426:Bacterial Proteins / Q000235:genetics* / Q000502:physiology; D004591:Electrophoresis, Polyacrylamide Gel; D010843:Pichia / Q000235:genetics*; D010957:Plasmids; D016133:Polymerase Chain Reaction; D011994:Recombinant Proteins / Q000096:biosynthesis*; D054793:Truncated Hemoglobins / Q000235:genetics* / Q000502:physiology
D001426:Bacterial Proteins; D011994:Recombinant Proteins; D054793:Truncated Hemoglobins; C082613:hemoglobin protein, Vitreoscilla; D000619:Aminohydrolases; C021867:nitrilase