Thallophyta

Largest group of plant kingdom.

not differentiated into stem, leaves and roots and no distinctive tissue systems.

mostly aquatic plants and found both in fresh and marine water due to absent of "true roots" and vascular tissue.

cell wall composed of cellulose around their cells.

Ex- Algae, Fungi and Lichens

TLS Online TPP Program

#Id: 7959

#XL - Q Biochemistry

Unfolded-protein response

Key protein –Ire1 promotes formation of Hac1

TLS Online TPP Program

#Id: 7958

#XL - Q Biochemistry

The efficient formation of disulfide bonds in the lumen of the ER depends on the enzyme protein disulfide isomerase (PDI), which is present in all eukaryotic cells

TLS Online TPP Program

#Id: 7957

#XL - Q Biochemistry

Immediately after the entire precursor, Glc3Man9(GlcNAc)2 is transferred to a nascent polypeptide, three different enzymes, called  glycosidases, remove all three glucose residues and one particular mannose residue.

TLS Online TPP Program

#Id: 7956

#XL - Q Biochemistry

A branched oligosaccharide containing 

3 glucose (Glc)

9 mannose (Man)

2 N-acetylglucosamine (GlcNAc)

Glc3Man9(GlcNAc)2

TLS Online TPP Program

#Id: 7955

#XL - Q Biochemistry

Only asparagine residues in the tripeptide sequences Asn-X-Ser and Asn-X-Thr (where X is any amino acid except proline) are substrates for oligosaccharyl transferase.

TLS Online TPP Program

#Id: 7954

#XL - Q Biochemistry

The precursor oligosaccharide is transferred from a

dolichol lipid anchor to the asparagine as an intact unit in a reaction catalyzed by a transmembrane oligosaccharyl transferase enzyme complex.