ectoenzyme


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ectoenzyme

[¦ek·tō′en‚zīm]
(biochemistry)
An enzyme which is located on the external surface of a cell.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Trehalase is an ectoenzyme that is linked to membrane by a glycosylphosphatidylinositol anchor, and excretion of the enzyme can be influenced by renal injuries.
Briefly, the purinergic system consists of three main components: (i) the extracellular nucleotides and nucleosides, which mediate signaling; (ii) the receptors through which these nucleotides and nucleosides exert their effects; (iii) and the ectoenzymes, responsible for the control of extracellular levels of these molecules [4].
We focused our attention on these three ectoenzymes, because we detected no immunoreactivity against NTPDase1 in the LM-MP of the rat ileum besides few blood vessels (Figure 8).
This unconventional ectoenzyme network is able to provide the generation of local tolerance in different disease models, such as the BM microenvironment in pathology (e.g., myeloma or CLL) [44].
ADO is produced through the action of adenosinergic ectoenzymes expressed on the membrane of different cell populations.
ALP mRNA, a known marker for detecting early osteogenic cell differentiation, acts as an ectoenzyme in the degradation of inorganic pyrophosphate for releasing phosphate for mineralization [18].
Previous study has demonstrated that the expression of CD39, an ectoenzyme highly expressed in Treg cells, increased in CD4+ lymphocytes from T2DM and obese patients [50].
Heterotrophic bacteria in the northern Adriatic Sea: seasonal changes and ectoenzyme profile.
5'-nucleotidase is an intrinsic membrane glycoprotein, present as an ectoenzyme in a wide variety of mammalian cells and it hydrolyzes extracellular AMP to adenosine and represents the major control point for extracellular adenosine levels and is a regulator of the adenosine signaling pathway.
Phytoplankton blooms increase the particulate and dissolved organic matter in the water resulting in the increased bacterial production and ectoenzyme activity [27,28].
5,-Nucleotidase (5-ribonucleotide phosphohydrolase; 5eNT) is an intrinsic membrane glycoprotein present as an ectoenzyme in a wide variety of mammalian cells.