β Sheets in proteins contain 2 to as many as 22 polypeptide strands, with an average of 6 strands. 

Each strand may contain up to 15 residues, the average being 6 residues.

TLS Online TPP Program

#Id: 8055

#Unit 1. Structure and Function of Biomolecules

TLS Online TPP Program

#Id: 8056

#Unit 1. Structure and Function of Biomolecules

Glu–Cys–Gly peptide in which the γ-carboxylate group of the glutamate side chain forms an isopeptide bond.

TLS Online TPP Program

#Id: 8057

#Unit 1. Structure and Function of Biomolecules

Cysteine, tryptophan, and methionine are not common amino acids: together, they constitute approximately 5 percent of the amino acids in a typical protein. Four amino acids—leucine, serine, lysine, and glutamic acid—are the most abundant amino acids, constituting 32 percent of all the residues in a typical protein.

TLS Online TPP Program

#Id: 8058

#Unit 1. Structure and Function of Biomolecules

Aspartate: P type ATPase and two component signalling.

Asparagine: N linked Glycosylation.

Cysteine- Fd-Trx system, PDI, G3PD, Hh, 

TLS Online TPP Program

#Id: 8059

#Unit 1. Structure and Function of Biomolecules

Glycine: Most conserved, G12 Ras, RGD, FG, 

Glutamine: NPQ, CAG repeat

GlutamatE: Neurotransmitter, VGLUT, Calmodulin, Nitrogen Assimilation

TLS Online TPP Program

#Id: 8060

#Unit 1. Structure and Function of Biomolecules

Histidine: Two component signalling, C2H2 zinc finger, Hemoglobin, His6-NiNTA column.

Isoleucine: AATS proofreading, RTK

Leucine: Toll like receptors, LRR,