Autonomously replicating extra-chromosomal circular DNA molecules, distinct
from the normal bacterial genome and nonessential for cell survival under
nonselective conditions. Some plasmids are capable of integrating into the
host genome. A number of artificially constructed plasmids are used as cloning
vectors.
www.ornl.gov/TechResources/Human_Genome/glossary/glossary.html
Independent, free-floating circular piece of DNA in a bacterium, capable of
making copies of itself in the host cell. Plasmids can be used in recombinant
DNA experiments to clone genes from other organisms and make large quantities
of their DNA.
ucbiotech.org/glossary/
Plasmid is a structure in cells consisting of DNA that can exist and
replicate independently of the chromosomes. In organisms (other than man) that
have been studied, it appears that plasmids interfere with gene activity.
neurolab.jsc.nasa.gov/glossnr.htm
A small circular piece of DNA in bacteria that resembles the bacterial
circular chromosome, but is dispensable. Some bacterial strains contain many
plasmids and some contain none. Plasmids are often used in genetic engineering
as cloning vectors.
www.oznet.ksu.edu/biotech/glossary.htm
A self-replicating (autonomous) circle of DNA distinct from the chromosomal
genome of bacteria. A plasmid contains genes normally not essential for cell
growth or survival. Some plasmids can integrate into the host genome, be
artificially constructed in the laboratory and serve as vectors (carriers) in
cloning.
www.jackorchard.org/2_glossary.asp
A small self-replicating ring of DNA found in many bacteria and some
yeasts. They are widely used in genetic modification because they are able to
pass easily from one cell to another.
www.ncbe.reading.ac.uk/NCBE/GMFOOD/igdglossary.html
An extrachromosomal genetic element found in bacteria, not essential for
growth. Usually contains genetic information for resistance to an
antimicrobial agent or for degradation of additional substrates.
www.erc.montana.edu/Res-Lib99-SW/glossary/gmicro.html
A genetic particle physically separate from the chromosome of the host cell
(chiefly bacterial) that can stably function and replicate; not essential to
the cell's basic functioning. Synonyms: extrachromosomal element,
extrachromosomal genetic element, paragene (Dirckx, 1997).
www.med.uwo.ca/ecosystemhealth/education/glossary.htm
A DNA molecule that can replicate independently of the chromosome; often
used in cell regulation
student.biology.arizona.edu/honors2000/group10/Glossary.htm
Circular loop of DNA in prokaryotes. Eukaryotic DNA is organized into
chromosomes.
www.ucmp.berkeley.edu/glossary/gloss4cell.html
A loop of DNA in bacteria which floats in the cytoplasm.
www.cem.msu.edu/~cem181h/glossary.html
Extrachromosomal genetic material that is not essential for growth and has
no extracellular form.
www.cwu.edu/~chem/courses/chem388488f00/mcclung/mcclungposter/Glossary.htm