The hydrophobic cleft in globular proteins which bind substrate molecules is called the ________.

#Question id: 1685

#SCPH01 Biochemistry

The TCR for antigen is:

#Question id: 4149

#SCPH06 I Botany

Glycosylation of proteins inside the endoplasmic reticulum does not involve:

#Question id: 1269

#SCPH05 I Biotechnology

Which of the following constituents are not found in most basal laminae?

#Question id: 643

#SCPH05 I Biotechnology

The hydrolysis of lactose is catalysed by b-galactosidase as given below

Which of the following could be correct mechanism for this hydrolysis reaction?

A. Nucleophilic attack by the carboxylate group of Glu/Asp on the C-1 carbon atom of the galactose moiety within glucose, releasing glucose and forming an intermediate with the galactose linked to the enzyme through an ester linkage. Water then attacks this carbon atom, displacing the glutamate carboxylate and releasing galactose.

B. Electrophilic attack by the carboxylate group of Glu/Asp on the C-1 carbon atom of the galactose moiety within glucose, releasing glucose and forming an intermediate with the galactose linked to the enzyme through an ester linkage. Water then attacks this carbon atom, displacing the glutamate carboxylate and releasing galactose.

C. Nucleophilic attack by the carboxylate group of Lys/Arg/His or bivalent cation on the C-1 carbon atom of the galactose moiety within glucose, releasing glucose and forming an intermediate with the galactose linked to the enzyme through an ester linkage. Water then attacks this carbon atom, displacing the glutamate carboxylate and releasing galactose.

#Question id: 1417

#SCPH28 | Zoology

Which of the following triggers apoptosis?