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Blatant Biology
Biochemistry 2, L1 definitions
ENR Catalytic Reductase
enzyme involved in the type II fatty acid synthesis system, and potential target for novel antibiotics due to its presence in many bacterial species; bound by triclosan and triclocarban to provide bacteriostatic activity
FAS Reductase
ENR and BKR reductase enzyme grouping
Enolate Anion Intermediate
an anion formed during the deprotonation of carbonyl compounds, formed during the ENR catalytic cycle
BKR Catalytic Reductase
constituent enzyme of the type II FAS, catalysing an NADPH-dependent reduction; has the same Rossmann fold and conserved residues as ENR, but gives selectivity for the proton donation site
Diazaborine Inhibitor (of ENR)
ENR inhibitor specifically targeting ENR, and a potential antibiotic drug that was toxic (due to a boron) and easy to develop resistance against
Triclosan
antibacterial and antifungal molecule, found in some consumer products (like soaps, toothpastes, detergents), but may disrupt hormonal development
ENR-Thienodiazaborine
the complex formed in bacteria after administering thienodiazaborine, inhibiting ENR activity; easy to develop mutations preventing the antimicrobial from binding while maintaining the biological function
FabA
enzyme catalysing the switching of position of a double bond, changing the tail structure of a fatty acid
FabA/FabZ
enzyme complex catalysing the elimination of a water molecule and the insertion of a double bond
Hotdog Fold
a protein structural motif where beta-sheets wrap around a central alpha-helix
Homodimer
a protein complex made of two identical proteins
Alkyl Chain Pocket
the region of the protein the lengthening alkyl (fatty acid) chain extends into
Binding Tunnel
the site for the pantetheine arm to enter before binding to the acyl chain to form a fatty acid
Pantetheine Arm
an analogue of vitamin B5; an intermediate in the catabolism of coenzyme A