Match the following histone tail modifications with the respective amino acids the modify.

COLUMN I	COLUMN II
I. Sumoylation	a) Lysine and Arginine
II. Deimination	b) Lysine
III.  ADP ribosylation	c) Arginine → Citrulline
IV. Methylation	d) Glutamate

TLS Online TPP Program

#Question id: 24493

#Unit 3. Fundamental Processes

Splice sites are directional in nature. 5’ splice site -the left, or donor, site and the 3’ splice site - right, or acceptor, site. 

1. U2 addition to base pair with the branch site in the presence of ATP

2. U1 and U4 release Formation of the catalytic center in which U6 base pairs with the 5' splice site; U6 also base pairs with U2; U2 remains base paired with the branch site; U5 interacts with both exons through its loop.

So, 1 and 2 are the event of complex formation which are 

TLS Online TPP Program

#Question id: 24494

#Unit 3. Fundamental Processes

U1 and U4 release Formation of the catalytic center in which U6 base pairs with the 5' splice site; U6 also base pairs with U2; U2 remains base paired with the branch site; U5 interacts with both exons through its loop is the characterstic of one of the stage during splicing, which is 

TLS Online TPP Program

#Question id: 24495

#Unit 3. Fundamental Processes

Which of the following step of splicing involves ATP

TLS Online TPP Program

#Question id: 24496

#Unit 3. Fundamental Processes

Lariat formation is characterized by

TLS Online TPP Program

#Question id: 24497

#Unit 3. Fundamental Processes

Choose the incorrect statement 

A. Lariat formation is characterized by 2’-5’ phosphodiester bond

B. Lariat formation is characterized by 3’-5’ phosphodiester bond

C. Group II mitochondrial introns are excised by the same mechanism as nuclear pre-mRNAs via a lariat that is held together by a 2’–5’ bond.

D. Group II mitochondrial introns are excised by the different  mechanism as nuclear pre-mRNAs via a lariat that is held together by a 2’–5’ bond.

TLS Online TPP Program

#Question id: 24498

#Unit 3. Fundamental Processes

SR proteins are involved in exon definition in which they interact with U1 and U2AF forming the commitment for