TLS Online TPP Program

#Id: 9297

#Section 2: General Biology

Nitrite reductase

Nitrite (NO2-) is a highly reactive, potentially toxic ion.

Plant cells immediately transport the nitrite into chloroplasts or plastids.

The enzyme nitrite reductase reduces nitrite to ammonium.

Leaf chloroplasts and root plastids contain different forms of nitrite reductase.

Each polypeptide contains two prosthetic groups, an iron-sulfur group and a specialized heme.

NO3-, high sucrose conc, and light induce the transcription of nitrite reductase mRNA.

Asparagine and glutamine repress the induction.

TLS Online TPP Program

#Id: 8625

#Section 3: Genetics, Cellular and Molecular Biology

Human SCF complexes contain: 

Three core components - Cul1 subunit, RBX1, Skp1 

and a substrate-targeting F-box protein

TLS Online TPP Program

#Id: 8336

#Section 3: Genetics, Cellular and Molecular Biology

Actin filament treadmilling is accelerated by:

Profilin and Cofilin

TLS Online TPP Program

#Id: 8211

#Section 3: Genetics, Cellular and Molecular Biology

Autophagosome, or autophagic vesicle

formation of a flattened double-membrane cup-shaped structure that envelops a region of the cytosol or an entire organelle.

TLS Online TPP Program

#Id: 8063

#Section 2: General Biology

Tryptophan- Serotonin, auxin, operon, absorbance, indole ring, single codon

Tyrosine- RTK, PTB, Y15, Dopamine, Norepinephrine, Epinephrine, ITAM

Valine- Elastase, ValRS