BIO NMDCAT

An apoprotein (or apoenzyme) is the purely proteinaceous part of a conjugated molecule that remains inactive or incomplete without its partner.

Proteoglycans form large aggregates with hyaluronic acid in cartilage, trapping water molecules to resist mechanical compression.

As VLDL unloads triacylglycerols into adipose tissues via lipoprotein lipase, it becomes denser and transforms into cholesterol-rich LDL.

Scurrying pathogens use hydrophilic, slippery glycoprotein capsules to hide their surface markers and evade immune cell engulfment.

Ceruloplasmin is a specialized transport protein and enzyme that binds copper ions tightly, making it a conjugated metalloprotein.

Telomerase requires its intrinsic RNA component to serve as a matching template for the synthesis of telomeric DNA chromosome ends.

Lectins are specialized proteins that recognize and bind specific carbohydrate structures, facilitating cell-to-cell contact.

Tay-Sachs is a lysosomal storage disorder where the inability to break down membrane gangliosides leads to toxic buildup in neurons.

Positively charged basic amino acids (lysine and arginine) on histones bind strongly to the negatively charged phosphates of the DNA molecule.

Silicoproteins are conjugated molecules where silicon or silicate complexes are structurally integrated into a protein backbone.

The Lipid A portion of LPS is an endotoxin that can trigger severe inflammatory pathways, leading to toxic shock in host organisms.

Viral envelope glycoproteins interact with host cell-surface receptors, mediating viral attachment and entry.

O-linked glycosylation occurs through the covalent attachment of an oligosaccharide to the oxygen atom of serine or threonine side chains.

Interferons are signaling proteins (cytokines) released by host cells in response to viral pathogens, and they are glycoproteins.

Chylomicrons are large lipoproteins that absorb and transport dietary triacylglycerols and cholesterol from the intestines into lacteals.

TMV consists of a single strand of genomic RNA wrapped in a helical coat of capsomere proteins, forming a pure nucleoprotein.

High-density lipoproteins (HDL) have the highest protein-to-lipid ratio and act to clear excess cholesterol from the circulatory pathways.

Proteoglycans are mostly carbohydrate by weight (80%–95%), containing long unbranched GAG chains, unlike standard glycoproteins.

HDL participates in reverse cholesterol transport, clearing excess lipids from blood vessels and carrying them back to the hepatic tissue.