Histones act as spools around which
DNA winds and they play a role in
gene regulation. This enables the comp
action necessary to fit the large
genomes of
eukaryotes inside
cell nuclei.
Histones act in
gene regulation.
Full article >>>Histones undergo posttranslational
modifications which alter their inter
action with
DNA and nuclear
proteins. The H3 and H4
histones have
long tails protruding from the
nucleosome which can be covalently modified at several places.
Full article >>>histones --
proteins attached to the
DNA of
eukaryotes which allows it to be
packaged into
chromosomes.
hydrophilic -- "water loving". Hydrophilic
compounds dissolve easily in water, and are usually polar.
Full article >>>histones: nuclear
proteins that coil
DNA molecules.
homeostasis: the process in which the internal
environment exists at a steady-state
equilibrium despite changes in the external
environment.
Full article >>>histones - basic
proteins that bind and "
package" eukaryotic
DNA; major
protein constituent of
chromosomes.
Full article >>>Histones: Highly basic
proteins which associate with the chromosomal
DNA to
package it into a compact, higher
order structure.
Full article >>>lack
histones on their
chromosomes and
have a simpler form of
mitosisThey do have the eukaryotic type ("9 + 2") of
flagellum (two of them in fact).
Full article >>>A single
DNA molecule, a tightly coiled strant of
DNA, condensed into a compact structure in vivo by complexing with accessory
histones or
histone-like
proteins.
Chromosomes exist in pairs in higher
eukaryotes.
Full article >>>chromatin A filamentous complex of
DNA,
histones, and other
proteins, constituting the eukaryotic
chromosome.
Full article >>>The
proteins associated with
DNA are collectively known as
histones. They are relatively short
polypeptides which are positively charged (basic) and thus are attracted to the negatively charged (acidic)
DNA.
Full article >>>When
DNA condenses, the
molecule becomes wrapped around
proteins called
histones. The
histones are then arranged in a coiled pattern to produce a larger fiber. This larger fiber is further compacted by looping to produce looped
domains.
Full article >>>These
enzymes add an acetyl group to
histones, thus releasing the restricted access to
DNA imposed by
histones.
Transcription factors can then bind to the
DNA, allowing
gene transcription to occur.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Full article >>>The genes for individual
histones are separated from one another by dissimilar
sequences (indicated by lower case letters).
There are about 200 copies of
histone genes in sea urchins.
The D. melanogaster 4.
Full article >>>Chromosome organized in
nucleosomes composed of
histones and other
protein factors.
Related
Chromosome ...
Full article >>>chromatin Nuclear material that gives rise to
chromosomes during
mitosis; complex of
DNA,
histones, and non
histone proteins.
chromatoid bar Masses of
RNA, visible with light microscopy, in young cysts of Ent
amoeba spp.
Full article >>>In the
cell cycle, the phase in which the
DNA of the
chromosomes is replicated and
DNA-associated
proteins, such as
histones, are synthesized.
systematics ...
Full article >>>A self-replicating
DNA molecule that carries essential genetic information for growth and
replication of a
cell or
virus. The
DNA organized into a tightly
packaged structure by associated
histone-like
proteins in
bacteria and
histones in
eukaryotes.
Full article >>>Four of these paired ORFs consist of genes encoding for different core
histones, three consist of genes that encode for
proteins of no known related function, ...
Full article >>>'"/>