nucleoid


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nucleoid

 [noo´kle-oid]
1. resembling a nucleus.
2. a nucleus-like body sometimes seen in the center of an erythrocyte.
3. the central region of a bacterium, consisting of a dense irregularly shaped region containing DNA material without a surrounding nuclear membrane.
4. the genetic material (nucleic acid) of a virus, situated in the center of the virion.

nu·cle·oid

(nū'klē-oyd),
1. Synonym(s): nucleiform
2. A nuclear inclusion body.
3. Synonym(s): nucleus (2)
[nucleo- + G. eidos, resemblance]

nucleoid

/nu·cle·oid/ (noo´kle-oid)
1. resembling a nucleus.
2. a nucleus-like body sometimes seen in the center of an erythrocyte.
3. the genetic material (nucleic acid) of a virus situated in the center of the virion.
4. the nuclear region of a bacterium, which contains the chromosome but is not limited by a nuclear membrane.

nucleoid

(no͞o′klē-oid′, nyo͞o′-)
n.
The undefined region of genetic material inside a prokaryotic cell, consisting of aggregated DNA.

nucleoid

A condensed body within a bacterium that contains the prokaryote’s genome.

nu·cle·oid

(nū'klē-oyd)
1. Synonym(s): nucleiform.
2. A nuclear inclusion body.
3. Synonym(s): nucleus (2) .
[nucleo- + G. eidos, resemblance]

nucleoid

  1. the chromosomal region of a BACTERIUM. In ESCHERICHIA COLI it comprises mainly DNA with some PROTEINS (analagous to, but not HISTONES) and RNA. The structure is very compact and the DNA is folded into a series of loops, that are supercoiled (see SUPERCOILED DNA).
  2. the DNA mass in the CHLOROPLAST or MITOCHONDRION.
  3. the core of ribonucleic acid and protein in the virion of a RETROVIRUS.

nu·cle·oid

(nū'klē-oyd)
1. A nuclear inclusion body.
2. Synonym(s): nucleus (2) .
[nucleo- + G. eidos, resemblance]

nucleoid

1. resembling a nucleus.
2. a nucleus-like body sometimes seen in the center of an erythrocyte.
3. the genetic material (nucleic acid) of a rickettsia, chlamydia and some viruses, e.g. poxviruses, situated in the center of the microorganism.
References in periodicals archive ?
The nucleoid displaying fine DNA fibrils occupied the central zone of the cells.
It occurs in two forms: A type intracellular particles consisting of a ring-shaped nucleoid surrounded by a membrane and submembranous layer or shell and B type extracellular particles consisting of an eccentric round nucleoid covered by a loose membrane.
All these successful attempts were made for identification of the binding sites of abundant DNA-binding proteins such as nucleoid proteins.
Previous work in our lab had characterized an abundant nucleoid protein (DCP68) from plastids of cultured soybean cells that is able to compact DNA in vitro.
MARGULIS: The prokaryote with the nucleoid membrane is Gemmata obscuriglobus, studied by Fuerst and his colleagues (1, 2).
Numerous intracytoplasmic protozoal organisms with a small nucleoid and smaller kinetoplast most consistent with Leishmania sp.
Therefore, our assay has four nucleoid targets for real-time PCR in a multiplex reaction detecting L.
During this development, dynamic structural changes of the organellar nucleoid have been observed that likely accompany differences in function of the protein-DNA complexes.
The cytosol usually evenly surrounded the nucleoid area and was usually rather homogeneous, with no evidence of either internal membranes (other than membrane-bound vacuoles) or granular inclusions.
thaliana line that has a knockout insertion in its sulfite reductase gene to study the biological effects of this mutation on nucleoid structure and function.
2:45 IDENTIFICATION OF THE CHLOROPLAST NUCLEOID PROTEIN, DCP68, AS A SULFITE REDUCTASE
Nucleoid structure varies during development from proplastids into mature chloroplasts, suggesting that it plays a role in the regulation of DNA replication and transcription of ctDNA.