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The expression of foreign genes in mollicutes has been difficult owing to inefficient transformation systems, and, until recently, by the lack of suitable cloning vectors. Few genes, excluding those associated with vector functions, have successfully been cloned and expressed in mollicutes (see Table 1 ; 1 –8 ).
Table 1Genes That Have Been Cloned and Expressed in Mollicutes
Species | Vector | Expressed gene | Reference |
---|---|---|---|
Spiroplasma citri | SpV1 | CAT gene from E. coli | (1) |
Acholeplasma oculi | Tn4001 | lacZ from E. coli | (2) |
S. citri | SpV1 | fragment of the M. pneumoniae P1 gene | (3) |
Mycoplasma mycoides subsp. mycoides LC | p2D4, pIKΔ | Erythromycin resistance gene from streptococcus | (4) |
A. laidlawii | pNZ19 | Spiralin gene from S. citri | (5) |
A. laidlawii | pGIP312 | α-Amylase gene from Bacilius licheniformis | (5) |
S. citri | pOT1 | Spiralin gene from S. phoeniceum | (6) |
Mycoplasma pneumpniae | Tn4001 | Truncated HMW1 gene from M. pneumpniae | (7) |
A. laidlawii | pNZ18 | PS synthase gene from E. coli | (8) |