Definitions for "Nucleosome"
Related Terms:
Exons, Restriction enzyme, Replisome, Cistron, Expression vector, Restriction endonuclease, Klenow fragment, Replicon, Intron, Introns, Rdna, Origin of replication, Operator, Plasmid, Gene, Telomerase, Homeobox, Promoter, Exon, Repetitive dna, Restriction enzymes, Transposase, Insertion, Primosome, Southern blotting, Okazaki fragment, Amplicon, Southern blot, Restriction site, Dna sequence, Transcription factors, Recombinant dna, In situ hybridization, Sequencer, Genomic dna, Homologous recombination, Operon, Rapd, Transcription unit, Plasmids, Restriction fragment, Yac , Cloning vector, Polymerase chain reaction, Retrotransposon, Pseudogene, Repressor, Restriction fragment length polymorphism, Cosmid, Cpg island
A chromosomal packing unit composed of a length of DNA wrapped around a histone core.
The spherical body formed by coils of chromatin; the assembly of histones and DNA that is the basic structural unit in chromatin.
Structural, beadlike unit of a eucaryotic chromosome composed of a short length of DNA wrapped around a core of histone proteins; the fundamental subunit of chromatin.
a compact, highly folded unit of a eucaryotic chromosome which contains about 200 base pairs.
Complexes of histone, protein and DNA in higher organisms (eukaryotes). Under the electron microscope the nucleosomes are visible as beadlike bodies on a string of DNA.. In the diagram shown below, on the right is shown "the beads on the string" where the blue rope is the DNA double helix, and the yellow stuffing the histones; on the left is the crystal structure of nucleosome; the two double helical DNAs appear in blue and gold, the histones as spirals in different color.
A beadlike structure of eukaryotic chromosomes. It consists of a core of eight histone molecules and a DNA segment of about 150 base pairs. Each nucleosome is separated from another by a linker DNA sequence of about 50 base pairs. Nucleosome structure helps to fold DNA into a compact form in the interphase nucleus. Otherwise the length of a chromosome, when linear, is many orders of magnitude greater than the diameter of the nucleus.
Spherical sub-units of eukaryotic chromatin that are composed of a core particle consisting of an octamer of histones (two molecules each of histones H2a, H2b, H3 and H4) and 146 nucleotide pairs.
A portion of a eukaryotic chromosome, consisting of part of the DNA molecule wrapped around a group of histone molecules, and held together by another type of histone molecule. The chromosome is made up of many nucleosomes.
a bead-like unit made of a segment of DNA wound around complex of histone proteins
a segment of the DNA wrapped around a core of histones
a unit made of DNA and histones
NEW-klee-o-some DNA wrapped around eight histone proteins as part of chromosome structure. 313
A repeating subunit of chromatin in which one and three-quarter turns of the double-helical DNA are wound around eight molecules of histones.
The DNA molecules that make up chromosomes are enormously long (about two metres per cell). So, they must be tightly packed. This is done by special proteins called histones that wrap the DNA around them to form tiny beads. These beads are called nucleosomes.
a structural unit made up of 146 bp of DNA wrapped 1.75 times around a core octamer of histone proteins; aids in the compaction of eukaryotic DNA.
A nu body; the basic unit of eukaryotic chromosome structure; a ball of eight histone molecules wrapped about by two coils of about 220 base pairs of DNA. Arrangement of DNA and histones forming regular spherical structures in eukaryotic chromatin.
the elementary structural subLETTER of a chromosome; it consists of histones and DNA
The basic level of chromatin packing in which the DNA is wrapped around a protein core formed from histones. This gives a " beads on a string" look to the DNA. Each nucleosome core particle is separated from the next by a region of linker DNA. Nucleosomes are then usually packed together into compact stacks generating a condensed 30 nm fiber.
Small structural unit of chromatin consisting of a disk-shaped core of histone proteins around which a 146-bp segment of DNA is wrapped. ( Figure 9-31)
These are the basic building blocks of chromatin structure. Nucleosomes consist of a core of proteins called histones around which the DNA is wound.
Nucleosomes are the fundamental repeating subunits of all eukaryotic chromatin (except when packaged in sperm). They package DNA into chromosomes inside the cell nucleus and control gene expression. They are made up of DNA and four pairs of proteins called histones, and resemble "beads on a string of DNA" when observed with an electron microscope.