List of articles in "Biomolecule" category - Page 1747

Melanopsin is a photopigment found in specialized photosensitive ganglion cells of the retina that are involved in the regulation of circadian rhythms pupillary light reflex and other non-visual responses to […]

A transpeptidase (EC 3.4.16.4 DD-peptidase DD-transpeptidase DD-carboxypeptidase D-alanyl-D-alanine carboxypeptidase D-alanyl-D-alanine-cleaving-peptidase D-alanine carboxypeptidase D-alanyl carboxypeptidase and serine-type D-Ala-D-Ala carboxypeptidase.) is a bacterial enzyme that cross-links peptidoglycan chains to form rigid cell […]

High molecular weight kininogen (HMWK or HK) is a circulating plasma protein which participates in the initiation of blood coagulation and in the generation of the vasodilator bradykinin via the […]

For other uses see AAA (disambiguation)AAA or AAA+ is an abbreviation for ATPases Associated with diverse cellular Activities. They share a common conserved module of approximately 230 amino acid residues.

In proteins the helix-turn-helix (HTH) is a major structural motif capable of binding DNA. It is composed of two α helices joined by a short strand of amino acids and […]

Glutamate dehydrogenase (GLDH) is an enzyme present in most microbes and the mitochondria of eukaryotes as are some of the other enzymes required for urea synthesis that converts glutamate to […]

An enterotoxin (not to be confused with endotoxin) is a protein exotoxin released by a microorganism that targets the intestines. Its target site is indicated within its name.Enterotoxins are chromosomally […]

The enzyme urate oxidase (UO) or uricase or factor-independent urate hydroxylase absent in humans catalyzes the oxidation of uric acid to 5-hydroxyisourate:Uric acid + O2 + H2O → 5-hydroxyisourate + […]

Nitrogenases (EC 1.18.6.1EC 1.19.6.1) are enzymes used by some organisms to fix atmospheric nitrogen gas (N2). There is only one known family of enzymes that accomplishes this process.

Succinate dehydrogenase or succinate-coenzyme Q reductase (SQR) or respiratory Complex II is an enzyme complex bound to the inner mitochondrial membrane of mammalian mitochondria and many bacterial cells. It is […]