| 词条 | Unsuccessful transfer |
| 释义 |
Unsuccessful transfer or abortive transfer is any bacterial DNA transfer from donor cell
Dictionary definitionRieger, Michaelis, and Green, in 1976 stated: {{Quote|1="'abortive transfer – any DNA transfer from bacterial donor to recipients cells that fails to establish the incoming DNA as part of the hereditary material of the recipient. A. t. has been observed following → transduction → transformation, and → conjugation. In all cases, the transmitted fragment is diluted out as the culture grows. Failure of integration of transferred DNA into the hereditary material of the recipient cell may be due to: 1. The failure of incoming DNA to form circular molecules; 2. circularization takes place, but the circular molecule fails to take up maintenance system. A. t. of the extrachromosomal elements (→ plasmids) as opposed to chromosomal fragments, is relatively uncommon elements since plasmids are genetic elements of autonomous survival in a bacterial cell. It is only when a mutation in the recipient or a resident plasmid makes the host component of the plasmid maintenance system inactive that a. t. of a plasmid occurs. Genes carried on abortive pieces of DNA may be have expressed in the recipient cells.[4]}}See also
References1. ^{{cite book|authors=Rieger R. Michaelis A., Green M. M.|year=1976|title=Glossary of genetics and cytogenetics: Classical and molecular|publisher=Springer-Verlag|place= Heidelberg - New York|isbn= 3-540-07668-9}} 2. ^{{cite book|authors=King R. C., Stransfield W. D. |year=1998|title=Dictionary of genetics|publisher=Oxford University Press|place= New York, Oxford|isbn=0-19-50944-1-7}} 3. ^{{Cite book |author=Bajrović K., Jevrić-Čaušević A., Hadžiselimović R., Eds|title=Uvod u genetičko inženjerstvo i biotehnologiju|publisher=Institut za genetičko inženjerstvo i biotehnologiju (INGEB) Sarajevo|year=2005|isbn= 9958-9344-1-8}} 4. ^{{cite book|authors=Rieger R. Michaelis A., Green M. M.|year=1976|title=Glossary of genetics and cytogenetics: Classical and molecular|publisher=Springer-Verlag|place= Heidelberg - New York|isbn= 3-540-07668-9}} External links 2 : Molecular genetics|Gene expression |
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