Pantetheine hydrolase

In enzymology, a pantetheine hydrolase (EC 3.5.1.92) is an enzyme that catalyzes the chemical reaction

(R)-pantetheine + H2O (R)-pantothenate + 2-aminoethanethiol
Pantetheine hydrolase
Identifiers
EC number3.5.1.92
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

Thus, the two substrates of this enzyme are (R)-pantetheine and H2O, whereas its two products are (R)-pantothenate and 2-aminoethanethiol.

This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. The systematic name of this enzyme class is (R)-pantetheine amidohydrolase. Other names in common use include pantetheinase, vanin, and vanin-1. This enzyme participates in pantothenate and coa biosynthesis.

References

    • Dupre S, Cavallini D (1979). "Purification and properties of pantetheinase from horse kidney". Methods Enzymol. Methods in Enzymology. 62: 262–7. doi:10.1016/0076-6879(79)62227-9. ISBN 978-0-12-181962-0. PMID 440106.
    • Dupre S, Chiaraluce R, Nardini M, Cannella C, Ricci G, Cavallini D (1984). "Continuous spectrophotometric assay of pantetheinase activity". Anal. Biochem. 142 (1): 175–81. doi:10.1016/0003-2697(84)90534-7. PMID 6549111.
    • Maras B, Barra D, Dupre S, Pitari G (1999). "Is pantetheinase the actual identity of mouse and human vanin-1 proteins?". FEBS Lett. 461 (3): 149–52. doi:10.1016/S0014-5793(99)01439-8. PMID 10567687.
    • P; Galland, F; Bazin, H; Zakharyev, VM; Imhof, BA; Naquet, P (1996). "Vanin-1, a novel GPI-linked perivascular molecule involved in thymus homing". Immunity. 5 (5): 391–405. doi:10.1016/S1074-7613(00)80496-3. PMID 8934567.
    • Maras B, Dupre S, Naquet P, Galland F (2000). "Pantetheinase activity of membrane-bound Vanin-1: lack of free cysteamine in tissues of Vanin-1 deficient mice". FEBS Lett. 483 (2–3): 149–54. doi:10.1016/S0014-5793(00)02110-4. PMID 11042271.
    • Granjeaud S, Mattei MG, Mungall AJ, Naquet P, Galland F (2001). "Vanin genes are clustered (human 6q22-24 and mouse 10A2B1) and encode isoforms of pantetheinase ectoenzymes". Immunogenetics. 53 (4): 296–306. doi:10.1007/s002510100327. PMID 11491533.
    • Pace HC, Brenner C (2001). "The nitrilase superfamily: classification, structure and function". Genome Biol. 2 (1): REVIEWS0001. doi:10.1186/gb-2001-2-1-reviews0001. PMC 150437. PMID 11380987.


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