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Experimental cancer drugs
Ubenimex
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Ubenimex

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Ubenimex
Ubenimex2DCSD.svg
Ubenimex3DanJ.gif
Names
IUPAC name
N-[(2S,3R)-3-Amino-2-hydroxy-4-phenylbutanoyl]-L-leucine
Systematic IUPAC name
(2S)-2-[(2S,3R)-3-Amino-2-hydroxy-4-phenylbutanamido]-4-methylpentanoic acid
Other names
Bestatin; N-[(2S,3R)-3-Amino-2-hydroxy-4-phenylbutyryl]-L-leucine
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.055.917
EC Number
  • 261-529-2
KEGG
PubChem CID
UNII
  • InChI=1S/C16H24N2O4/c1-10(2)8-13(16(21)22)18-15(20)14(19)12(17)9-11-6-4-3-5-7-11/h3-7,10,12-14,19H,8-9,17H2,1-2H3,(H,18,20)(H,21,22)/t12-,13+,14+/m1/s1
    Key: VGGGPCQERPFHOB-RDBSUJKOSA-N
  • CC(C)C[C@@H](C(=O)O)NC(=O)[C@H]([C@@H](CC1=CC=CC=C1)N)O
Properties
C16H24N2O4
Molar mass 308.378 g·mol−1
Melting point 245 °C (473 °F; 518 K) (decomposes)
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Ubenimex (INN), also known more commonly as bestatin, is a competitive, reversible protease inhibitor. It is an inhibitor of arginyl aminopeptidase (aminopeptidase B),leukotriene A4 hydrolase (a zinc metalloprotease that displays both epoxide hydrolase and aminopeptidase activities),alanyl aminopeptidase (aminopeptidase M/N),leucyl/cystinyl aminopeptidase (oxytocinase/vasopressinase), and membrane dipeptidase (leukotriene D4 hydrolase). It is being studied for use in the treatment of acute myelocytic leukemia and lymphedema. It is derived from Streptomyces olivoreticuli. Ubenimex has been found to inhibit the enzymatic degradation of oxytocin, vasopressin, enkephalins, and various other peptides and compounds.

Crystal structure of ubenimex
Crystal structure of ubenimex in the binding pocket of leukotriene A4 hydrolase. Rendered from PDB 1HS6.

See also

External links

  • The MEROPS online database for peptidases and their inhibitors: Bestatin



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