Entry
Name
meromycolic acid enoyl-[acyl-carrier-protein] reductase;
inhA (gene name)
Class
Oxidoreductases;
Acting on the CH-CH group of donors;
With NAD+ or NADP+ as acceptor
BRITE hierarchy
Sysname
meromycolyl-[acyl-carrier protein]:NAD+ oxidoreductase
Reaction(IUBMB)
a meromycolyl-[acyl-carrier protein] + NAD+ = a trans-Delta2-meromycolyl-[acyl-carrier protein] + NADH + H+ [RN:
R12236 ]
Reaction(KEGG)
Substrate
meromycolyl-[acyl-carrier protein] [CPD:
C22023 ];
NAD+ [CPD:
C00003 ]
Product
trans-Delta2-meromycolyl-[acyl-carrier protein] [CPD:
C22022 ];
NADH [CPD:
C00004 ];
H+ [CPD:
C00080 ]
Comment
InhA is a component of the fatty acid synthase (FAS) II system of Mycobacterium tuberculosis, catalysing an enoyl-[acyl-carrier-protein] reductase step. The enzyme acts on very long and unsaturated fatty acids that form the meromycolic component of mycolic acids. It extends FASI-derived C20 fatty acids to form C60 to C90 mycolic acids. The enzyme, which forms a homotetramer, is the target of the preferred antitubercular drug isoniazid.
History
EC 1.3.1.118 created 2018
Pathway
ec01110 Biosynthesis of secondary metabolites
Orthology
K11611 meromycolic acid enoyl-[acyl-carrier protein] reductase
Genes
MMAE : MMARE11_22120(inhA)
MBAI : MB901379_02118(inhA_2)
MHEK : JMUB5695_02782(inhA_1)
MKY : IWGMT90018_34860(inhA)
MPHL : MPHLCCUG_02862(inhA_1)
MTHN : 4412656_01968(inhA)
MAUU : NCTC10437_02605(inhA)
MFLV : NCTC10271_02817(inhA)
MSAL : DSM43276_02423(inhA_3)
MTER : 4434518_02153(inhA)
NFR : ERS450000_00572(inhA)
NTP : CRH09_09465 CRH09_21610
NAD : NCTC11293_04846(inhA)
RCR : NCTC10994_00569(inhA)
RANT : RHODO2019_07285(fabI)
SMA : SAVERM_2295(fabI2) SAVERM_6463(fabI1)
SALS : SLNWT_4947 SLNWT_6064
SCI : B446_09395 B446_27900
SLC : SL103_00650 SL103_10120
SXI : SXIM_08040 SXIM_30370
SAMB : SAM23877_1882(inhA)
SLE : sle_53190(sle_53190)
SPAV : Spa2297_07215 Spa2297_26555
SGS : AVL59_11290 AVL59_22200 AVL59_23355 AVL59_35840
SALW : CP975_07580(fabI) CP975_22890(fabI)
SSIA : A7J05_13395 A7J05_27860
STRO : STRMOE7_09990 STRMOE7_19195
SGD : ELQ87_00785(fabI) ELQ87_30520(fabI)
SKA : CP970_06910(fabI) CP970_34065(fabI)
SHAW : CEB94_09585 CEB94_22300
SAQU : EJC51_12120(fabI) EJC51_43830(fabI)
SGF : HEP81_02093(fabI) HEP81_05958
SBY : H7H31_03555(fabI) H7H31_28205(fabI)
SRIM : CP984_17925(fabI) CP984_31900(fabI)
SPAC : B1H29_00465 B1H29_28440 B1H29_36595
SCOE : CP976_10275(fabI) CP976_32245(fabI)
SSPB : CP982_02960(fabI) CP982_10720(fabI)
SHUN : DWB77_05910(inhA_2)
SDW : K7C20_08555(fabI) K7C20_18315(fabI)
SGJ : IAG43_06585(fabI) IAG43_25620(fabI)
SHK : J2N69_07400(fabI) J2N69_20420(fabI) J2N69_23920(fabI)
SANU : K7396_18400(fabI) K7396_27720(fabI)
SDD : D9753_21060(fabI) D9753_27700(fabI)
SGOB : test1122_02165(fabI)
SINE : KI385_11665(fabI) KI385_22555(fabI)
STAA : LDH80_10420(fabI) LDH80_30245(fabI)
SNIG : HEK616_16710 HEK616_70990
SXT : KPP03845_102056(inhA_1)
SENG : OJ254_09625(fabI) OJ254_18960(fabI)
STTN : BSL84_07885 BSL84_20915
STRZ : OYE22_03425(fabI) OYE22_27480(fabI)
SLUO : PS467_07895 PS467_10845(fabI)
STRW : QHG49_08750(fabI) QHG49_27095(fabI)
KIT : CFP65_0286 CFP65_5633
STRH : GXP74_26140(fabI) GXP74_30440(fabI)
DCO : SAMEA4475696_1748(inhA)
CGRN : 4412665_01083(inhA)
PAUS : NCTC13651_01795(inhA)
RAIN : Rai3103_16520(fabI)
BROO : brsh051_04550(fabI)
NAQU : ENKNEFLB_02471(inhA)
NAL : B005_3507 B005_5318(inhA)
NEX : NE857_10100(fabI) NE857_20060(fabI)
NEC : KGD82_10970(fabI) KGD82_20030(fabI)
NAKE : KGD83_04570(fabI) KGD83_11675(fabI)
SNAH : OUQ99_06680(fabI) OUQ99_10455(fabI)
AGRA : AGRA3207_000536(fabI)
AAB : A4R43_11040 A4R43_24795
PAUT : Pdca_24080 Pdca_32760
ACTU : Actkin_03972(inhA_2) Actkin_05747(inhA_4)
CROS : N8J89_13975(fabI) N8J89_30555(fabI) N8J89_31235(fabI)
MCAB : HXZ27_21575(fabI) HXZ27_30105
ACTN : L083_2247 L083_2329(inhA)
ACTR : Asp14428_15090 Asp14428_23280
ATL : Athai_06340 Athai_33150
ASER : Asera_00590 Asera_41460
CATI : CS0771_54740 CS0771_71470
AIR : NCTC12972_00999(inhA)
ASLA : NCTC11923_01677(inhA)
AVC : NCTC10951_00535(inhA)
BALA : DSM104299_00727(inhA_2)
PBAJ : LRS13_05865(fabI) LRS13_06710(fabI) LRS13_11585(fabI)
SBAE : DSM104329_03271(inhA_1)
TALU : JDY09_07805(fabI) JDY09_09230(fabI)
DHI : LH044_08760 LH044_08765(fabI)
» show all
Taxonomy
Reference
Authors
Quemard A, Sacchettini JC, Dessen A, Vilcheze C, Bittman R, Jacobs WR Jr, Blanchard JS
Title
Enzymatic characterization of the target for isoniazid in Mycobacterium tuberculosis.
Journal
Reference
Authors
Rozwarski DA, Vilcheze C, Sugantino M, Bittman R, Sacchettini JC
Title
Crystal structure of the Mycobacterium tuberculosis enoyl-ACP reductase, InhA, in complex with NAD+ and a C16 fatty acyl substrate.
Journal
Sequence
Reference
Authors
Marrakchi H, Laneelle G, Quemard A
Title
InhA, a target of the antituberculous drug isoniazid, is involved in a mycobacterial fatty acid elongation system, FAS-II.
Journal
Reference
Authors
Vilcheze C, Morbidoni HR, Weisbrod TR, Iwamoto H, Kuo M, Sacchettini JC, Jacobs WR Jr
Title
Inactivation of the inhA-encoded fatty acid synthase II (FASII) enoyl-acyl carrier protein reductase induces accumulation of the FASI end products and cell lysis of Mycobacterium smegmatis.
Journal
Reference
Authors
Gurvitz A, Hiltunen JK, Kastaniotis AJ
Title
Function of heterologous Mycobacterium tuberculosis InhA, a type 2 fatty acid synthase enzyme involved in extending C20 fatty acids to C60-to-C90 mycolic acids, during de novo lipoic acid synthesis in Saccharomyces cerevisiae.
Journal
Sequence
Reference
Authors
Chollet A, Mourey L, Lherbet C, Delbot A, Julien S, Baltas M, Bernadou J, Pratviel G, Maveyraud L, Bernardes-Genisson V
Title
Crystal structure of the enoyl-ACP reductase of Mycobacterium tuberculosis (InhA) in the apo-form and in complex with the active metabolite of isoniazid pre-formed by a biomimetic approach.
Journal
Sequence
Other DBs
ExPASy - ENZYME nomenclature database: 1.3.1.118