What are the features of hnrna, Biology

Assignment Help:

Q. What are the features of hnRNA?

Heterogeneous nuclear RNA (hnRNA) - Primary precursor mRNA transcript made in eukaryotic nucleus are called 'hnRNA,' an abbreviation for 'heterogeneous nuclear RNA. Aspects are as below:

Introns:As many eukaryotic nuclear genes are interrupted by introns, RNA transcripts of intron-containing genes have intronic RNA sequences. Poly A tails at 3'-end: Poly A tails added to 3'-end of most though not all hnRNAs during nuclear RNA processing. These tails are retained in processed mRNA. 5'-Cap structure: A modified GTP is covalently attached to 5'-end of most precursors to mRNA. This cap structure is also retained in processed mRNA. Base Composition and relation to template strand: RNA is synthesized from a DNA template. Sequence of RNA is complementary to DNA template strand and opposite in polarity. C and T in DNA template are transcribed by RNA polymerase as G and A in hnRNA, correspondingly. A and G in DNA template are transcribed as U and C in hnRNA. So mRNA and hnRNA are sequences of A, G, C and U's.


Related Discussions:- What are the features of hnrna

Explain the process of nuclear reorganization, Process of nuclear reorganiz...

Process of nuclear reorganization in protozoa in which nucleus divides, each half undergoes a maturation, and two persisting functional nuclei reunite is termed as: a) Autogamy

Pathogenesis of acute rheumatic fever, You have learnt about the epidemiolo...

You have learnt about the epidemiology, etiology and pathogenesis of acute rheumatic fever. Revised Jones criteria, which have major and minor criteria, are helping to diagnosis of

What is fluorescent microscope, What is Fluorescent Microscope? In abo...

What is Fluorescent Microscope? In above said microscopes, image is produced from light that passes through a specimen. In fluorescent microscope, however, specimen image is f

Assessment and nursing care plans, Assessment and Nursing Care Plans C...

Assessment and Nursing Care Plans Clustered Case Study Mr. Smith is an 83 year old gentleman (DOB 1.2.1928), who lives alone in his home on a cattle farm west of Ravenshoe.

What are some examples of biological activities, What are some examples of ...

What are some examples of biological activities in which osmosis plays an important role? Hemolysis (destruction of red blood cells) by entrance of water, the hydric regulation

Explain what is aortic arch aneurysm, Explain what is Aortic Arch Aneurysm ...

Explain what is Aortic Arch Aneurysm ? Aortic Arch Aneurysm :  Hypothermic circulatory arrest and retrograde cerebral perfusion is the most commonly used technique for

Show takhtajans system of classification, Q. Show Takhtajans System of Clas...

Q. Show Takhtajans System of Classification? Another important phytogenetic system was proposed by Takhtajan, the famous Russian Palaeobotanist working at Komarov Botanical Ins

Determine the concepts of soil fertility, Determine the Concepts of Soil Fe...

Determine the Concepts of Soil Fertility  The soil fertility evaluation can be assessed by having an idea of the amount of nutrient which will be required for the growth of pla

Types of biodiversity, (i)     Genetic  Bio- Diversity: All forms of l...

(i)     Genetic  Bio- Diversity: All forms of life on earth contain genes. Genes are carrier of hereditary characteristic from one generation to another. " genetic diver

Importance of dark period, Importance of Dark Period For quite sometim...

Importance of Dark Period For quite sometime the role of light period (photoperiod) was emphasised in flowering? However, based on certain experiments it was realised that it

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