What is prokaryotic chromosomes, Biology

Assignment Help:

The DNA of a bacterial cell,such as Escherichia coli is a circular double-stranded molecule  often  referred  to as the bacterial  chromosome.  The circular  DNA  is packaged into a area of the cell called as the nucleoid where it is organized  into 50 or so loops  or domains  which are bound  to a central  protein scaffold  attached  to  the  cell  membrane. Above figure illustrates these industries, though only six loops are shown for clarity. Within this structure the DNA is in fact  not a circular  double-stranded  DNA  molecule  like  as that  shown  in fig.  but is negatively supercoiled,  which is, it is twisted upon itself and is also  completed  with  several  DNA-binding  proteins,  the  most  common  of that are proteins HU, H-NS and HLP-1. These are histone-like proteins.

944_22.png

Figure:  (a) The association of circular bacterial DNA with a protein scaffold; (b) a circular double-stranded DNA molecule; (c) supercoiled DNA.


Related Discussions:- What is prokaryotic chromosomes

Why are the salt and sugar used, Q. Why are the salt and sugar used in the ...

Q. Why are the salt and sugar used in the production of dried fruits and dried meat? Substances that sustain a highly hypertonic environment, like salt and sugar, are used in t

What are the typical fauna of the deserts, What are the typical vegetation ...

What are the typical vegetation and the typical fauna of the deserts? The predominant fauna of desert ecosystems is produced by reptiles, as lizards and snakes, terrestrial art

Packaging of meat products, P a ck a g i n g of Meat Products Me...

P a ck a g i n g of Meat Products Meat needs to be packaged to prevent contamination, color deterioration, loss of moisture, odor pickup, oxidative rancidity etc and pro

Rapidly flowing waters - biota of rivers, Rapidly Flowing Waters - Biota of...

Rapidly Flowing Waters - Biota of Rivers In the rapidly flowing section of the river, the water current is the dominant feature. Everything that is not attached or weighed is

What is isoniazid, Isoniazid  Serum aminotransferase activity increases...

Isoniazid  Serum aminotransferase activity increases in 10% to 20% of patients taking isoniazid, especially in the early weeks of treatment, but often returns to normal even wh

Oxidation of enzymes action, Oxidation Some enzymes which have the sulf...

Oxidation Some enzymes which have the sulfhydryl (-SH)  group in  the catalytic site are very sensitive to oxidation. Due  to oxidation of  the  -SH  group  by  aerial  oxygen

Legal rights of psychiatric patients, LEGAL RIGHTS OF PSYCHIATRIC PATIENTS:...

LEGAL RIGHTS OF PSYCHIATRIC PATIENTS: When a patient is admitted in psychiatric hospital he may be deprived of  the freedom  to leave the hospital, and also to maintain certai

The process of evolutionary cephalization be described, Using examples of i...

Using examples of invertebrate nervous systems how can the process of evolutionary cephalization be described? Considering the instance of invertebrates it is observed that ev

Can you explain likar system with electrodes, Q. Can you explain Likar Syst...

Q. Can you explain Likar System with Electrodes? The 12 lead Mason - Likar system with electrodes is used. The plastic adhesive electrodes has self contained electrode jelly in

Which is the other adnexal gland of the digestive system, Besides the liver...

Besides the liver which is the other adnexal gland of the digestive system that releases substances in the duodenum participating in extracellular digestion? The other adnexal

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd