What are the features of hnrna, Biology

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.

Posted Date: 8/27/2013 1:56:17 AM | Location : United States







Related Discussions:- What are the features of hnrna, Assignment Help, Ask Question on What are the features of hnrna, Get Answer, Expert's Help, What are the features of hnrna Discussions

Write discussion on What are the features of hnrna
Your posts are moderated
Related Questions
Q. Are body planes important for identifying anatomical structure? In order to observe and study structural arrangement of the internal organs, body may be divided and sectione

Determine about the Klove Grooved Pegboard Test The subject must place pegs shaped like keys into a board having recesses that are oriented in randomly varying directions. The

Vein Grafts :  At the end of ten years only 50 per cent of saphenous vein grafts are paten1 and 50 per cent of the rest may have significant atherosclerotic changes. In a

What is the aim of milling The aim of milling (the process including crushing and grinding) is to obtain preferentially a flour, in which the constituents of the endosperm cell

How is the early diagnosis of genetic diseases usually done? The Genetic disease may be diagnosed in the prenatal period by karyotype analysis, in case of aneuploidies, or by D

Echocardiography is a very important tool in diagnosis of cardiovascular diseases and is used  virtually in all categories of cardiovascular diseases. There are certain areas where

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Where are the openings into the coronary arteries? Why is this important when blood is flowing?

Explain Principle of Fehling's Soxhlet method (Lane-Eynon method)? Reducing sugars are those which have free sugar groups and hence may be estimated directly by titrating the s

which symbiotic protozoa present in digestive tract of termites?