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Glutamate carboxypeptidase (EC 3.4.17.11, carboxypeptidase G, carboxypeptidase G1, carboxypeptidase G2, glutamyl carboxypeptidase, N-pteroyl-L-glutamate hydrolase) is an enzyme.
Glutamate is a common and abundant excitatory neurotransmitter in the central nervous system; however, if there is too much glutamate transmission, this can kill or at least damage neurons and has been implicated in many neurological diseases and disorders [37] therefore the balance that NAAG peptidase contributes to is quite important.
A carboxypeptidase (EC number 3.4.16 - 3.4.18) is a protease enzyme that hydrolyzes (cleaves) a peptide bond at the carboxy-terminal (C-terminal) end of a protein or peptide. This is in contrast to an aminopeptidases , which cleave peptide bonds at the N-terminus of proteins.
NAAG is catabolized via NAAG peptidase activity. Two enzymes with NAAG peptidase activity have been cloned, glutamate carboxypeptidase II and glutamate carboxypeptidase III. These enzymes mediate the hydrolysis of NAAG to NAA and glutamate. Their inhibition can produce therapeutic benefits.
Carboxypeptidase A (CPA) contains a zinc (Zn 2+) metal center in a tetrahedral geometry with amino acid residues in close proximity around zinc to facilitate catalysis and binding. Out of the 307 amino acids bonded in a peptide chain, the following amino acid residues are important for catalysis and binding; Glu-270, Arg-71, Arg-127, Asn-144 ...
The glutamate/GABA–glutamine cycle is a metabolic pathway that describes the release of either glutamate or GABA from neurons which is then taken up into astrocytes (non-neuronal glial cells). In return, astrocytes release glutamine to be taken up into neurons for use as a precursor to the synthesis of either glutamate or GABA.
8836 14590 Ensembl ENSG00000137563 ENSMUSG00000073987 UniProt Q92820 Q9Z0L8 RefSeq (mRNA) NM_003878 NM_010281 RefSeq (protein) NP_003869 NP_034411 Location (UCSC) Chr 8: 63.01 – 63.04 Mb Chr 4: 20.04 – 20.07 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Gamma-glutamyl hydrolase is an enzyme that catalyses the following chemical reaction: Hydrolysis of a gamma-glutamyl bond This ...
Glutamic proteases are a group of proteolytic enzymes containing a glutamic acid residue within the active site. This type of protease was first described in 2004 and became the sixth catalytic type of protease. [1]