Entry
Name
Delta7-sterol 5(6)-desaturase;
lathosterol oxidase;
Delta7-sterol Delta5-dehydrogenase;
Delta7-sterol 5-desaturase;
Delta7-sterol-C5(6)-desaturase;
5-DES;
SC5DL (gene name);
ERG3 (gene name)
Class
Oxidoreductases;
Acting on paired donors, with incorporation or reduction of molecular oxygen;
With oxidation of a pair of donors resulting in the reduction of O2 to two molecules of water
BRITE hierarchy
Sysname
Delta7-sterol,ferrocytochrome b5:oxygen oxidoreductase 5,6-dehydrogenating
Reaction(IUBMB)
a Delta7-sterol + 2 ferrocytochrome b5 + O2 + 2 H+ = a Delta5,7-sterol + 2 ferricytochrome b5 + 2 H2O
Reaction(KEGG)
Substrate
Product
Delta5,7-sterol;
ferricytochrome b5 [CPD:
C00996 ];
H2O [CPD:
C00001 ]
Comment
This enzyme, found in eukaryotic organisms, catalyses the introduction of a double bond between the C5 and C6 carbons of the B ring of Delta7-sterols, to yield the corresponding Delta5,7-sterols. The enzymes from yeast, plants and vertebrates act on avenasterol, episterol, and lathosterol, respectively. The enzyme is located at the endoplasmic reticulum and is membrane bound.
History
EC 1.14.19.20 created 1972 as EC 1.3.3.2, transferred 2005 to EC 1.14.21.6, transferred 2015 to EC 1.14.19.20
Pathway
ec01110 Biosynthesis of secondary metabolites
Orthology
K00227 Delta7-sterol 5-desaturase
Genes
CJC : 100387284(SC5D) 100392016
CSYR : 103258745 103274563(SC5D)
MPAH : 110327921(Sc5d) 110334695
BBUB : 102394495(SC5D) 102410497
OAS : 101109313 101117697(SC5D)
BTAX : 128045497 128060473(SC5D)
PCAD : 102980120 102994174(SC5D)
DRO : 112301615 112301887(SC5D)
SHR : 100932949(SC5D) 116419258
ETL : 114066789(SC5D) 114072326
AAM : 106490218(SC5D) 106491711
XLA : 108697607(sc5d.S) 447026(sc5d.L)
CCAR : 109105967 109111460
CAUA : 113038585 113078828 113092286
CGIB : 127942367 127985742
MASI : 127429392 127430624
LCO : 104921101(sc5d) 104938430
TBEN : 117479898 117491402
CGOB : 115009867 115019205
EMAC : 134872734(sc5d) 134880240
ELY : 117261604 117271255(sc5d)
EFO : 125888051 125898976(sc5d)
PLEP : 121950308 121952596
SLUC : 116052992 116056026(sc5d)
ECRA : 117948451 117955360
ESP : 116693665 116700205(sc5d)
PFLV : 114559649 114560831 114567023(sc5d)
PPUG : 119196021 119215758
AFB : 129108713 129113783(sc5d)
CLUM : 117732261 117743241(sc5d)
PSWI : 130191837(sc5d) 130195369
MSAM : 119893521 119893522 119895819(sc5d)
SCHU : 122874337 122888691(sc5d)
ALAT : 119023839 119031780
MZE : 101470905(sc5d) 101479398 112429932
ONL : 100695064(sc5d) 100696185
ALIM : 106514612 106514613
AOCE : 111575129 111576308
MCEP : 125014312 125021234
POV : 109624686 109635651(sc5d)
SSEN : 122761001 122775748 122780108(sc5d)
HHIP : 117763772 117774596(sc5d)
HSP : 118110061 118121664(sc5d)
PPLT : 128445055 128457009
SMAU : 118301271(sc5d) 118315731
SDU : 111225164 111233090(sc5d)
SLAL : 111656091(sc5d) 111666108
HCQ : 109515690(sc5d) 109526775
SSCV : 125970171 125982243
SBIA : 133492000(sc5d) 133502532
PTAO : 133466928 133478651
BPEC : 110168196 110169547
BSPL : 114857847 114869253 114869254 114869255
SASA : 100195087(sc5d) 106576971
STRU : 115148693(sc5d) 115193389
OTW : 112253002 112257983(sc5d)
OMY : 110521978 110537613(sc5d)
OGO : 124000357(sc5d) 124040778
ONE : 115105426(sc5d) 115136340
OKI : 109888785 109892857(sc5d)
OKE : 118369688 118391046(sc5d)
SALP : 111952019 111980773(sc5d)
SNH : 120017780 120031213(sc5d)
CCLU : 121553736 121573933(sc5d)
ELS : 105023255 105024195(sc5d)
ARUT : 117397270 117966540
BBEL : 109470054 109476404
SPU : 100890969 105439193 115921850 588561
LPIC : 129254162 129281357
APLC : 110980086 110980107 110983476 110983540
ARUN : 117288942 117289499 117301859 117305722
AJC : 117121637 117123455 117123521
AAG : 110676479 110676480 110681460
AALB : 109427836 109427959 109428277 109428319 115266341
ASUA : 134209623 134216016
CPII : 120422188 120422197
ATRA : 106130278 106130279
ACOO : 126842352 126842354 126845556
BTAB : 109030394 109032888
DPX : DAPPUDRAFT_300451 DAPPUDRAFT_309043
EAF : 111697529 111699796 111707825
CRG : 105323181 105323182 105348227
CANU : 128156348 128184008
OED : 125646238 125646239 125682600
MMER : 123559739 123561403
MAEA : 128234191 128234904 128235664
LAK : 106161627 106164082 106173279
LLON : 135502292 135502293 135502380
NVE : 116617875 5495700 5511639 5515899
EPA : 110236617 110236759 110237983
ATEN : 116297165 116308311
ATH : AT3G02580(STE1) AT3G02590
ALY : 9306601 9306619 9318308 9320397
CSAT : 104744338 104744339 104744340 104763875 104763876 104763877 104776707
EUS : EUTSA_v10011706mg EUTSA_v10021274mg EUTSA_v10021293mg
BRP : 103843392 103843402 103858971 103858974 103870908
BNA : 106362772 106366810 106366813 106382858 106385223 106387284 106438943 106438944 106443864 125583341 125583342 125583343 125609181
BOE : 106295553 106299027 106329479 106329480 106329481 106342761
RSZ : 108859899 108859903 108862851 130495140
THJ : 104820939 104822096 104827161 104827162
MINC : 123197378 123226134
HSYR : 120139199 120153920 120196776 120206895
AHF : 112716721 112740726 112782995 112794515
LANG : 109347424 109347425
PCIN : 129290136 129293829
MSYL : 126582199 126612619
PXB : 103936617 103937470 103948488
CMAX : 111479986 111492934
CMOS : 111452401 111457984
CPEP : 111788924 111790370
MESC : 110604160 110613475
PALZ : 118029721 118056023
JRE : 108988023 109016764 109021451
CILL : 122302834 122308219
VVI : 100257622 100262743 100265283
VRI : 117912663 117917505 117917539 117930782
SPEN : 107008645 107010781 107011506
SOT : 102587419 102594482 102602151
SSTN : 125846856 125846865 125848547
SDUL : 129873167 129875131
NTA : 107762070 107763191 107788284 107795770
SSPL : 121773640 121775759
ECAD : 122579677 122580417 122585197 122610167
CCAV : 112502094 112512711 112520405
CSIN : 114261391 114319972
RVL : 131297984 131303636 131303637
AEW : 130768661 130773952 130778324
BVG : 104888098 104888101 104906256
SOE : 110785578 110796799 110801644
CQI : 110692968 110725245 110725405 110728228
ATRI : 130802273 130825795 130825948
MING : 122078514 122082807
PSOM : 113275393 113282225
TAES : 123059923 123068378 123076056
LPER : 127338124 127341072
LRD : 124659313 124661437 124664312 124665517 124680419 124705908
PVIR : 120672692 120706090
MUS : 103968710 103977203 103987407 103987803
ZOF : 121992968 121992971 121996964 121996967
NCOL : 116257087 116257915 116263586 116263587 116263901 116263999 116264814
SMO : SELMODRAFT_146325 SELMODRAFT_182646
CVR : CHLNCDRAFT_37407 CHLNCDRAFT_57760
APRO : F751_3695 F751_6009
OTA : OT_ostta05g00930 OT_ostta20g00840
NDI : NDAI_0C06430(NDAI0C06430)
TPF : TPHA_0D00440(TPHA0D00440) TPHA_0P00250(TPHA0P00250)
TBL : TBLA_0D02520(TBLA0D02520)
TDL : TDEL_0C00670(TDEL0C00670)
KAF : KAFR_0D01010(KAFR0D01010)
KNG : KNAG_0L00320(KNAG0L00320)
SPAA : SPAPADRAFT_48108(ERG3)
LBG : 92207818(LODBEIA_P26220)
CAL : CAALFM_C104770CA(ERG3)
YLI : 2910270(YALI2_D00440g)
NTE : NEUTE1DRAFT116882(NEUTE1DRAFT_116882) NEUTE1DRAFT78153(NEUTE1DRAFT_78153)
SMP : 10803193(SMAC4_07109) 10807264(SMAC4_08592)
TMN : UCRPA7_1625 UCRPA7_347
FGR : FGSG_02502 FGSG_04994
FPU : FPSE_08622 FPSE_12291
FPOA : FPOAC1_002624 FPOAC1_007889
FVN : FVRRES_02920 FVRRES_08425
FVR : FVEG_06768 FVEG_09178
FOX : FOXG_09168 FOXG_10530
NHE : NECHADRAFT_43685 NECHADRAFT_45966
FFC : NCS54_00846400 NCS54_01011800
FKR : NCS57_00889300 NCS57_01005700
FMU : J7337_005220 J7337_009428
TATV : 25785193(TrAtP1_009717)
TASP : 36609111(TrAFT101_011449)
MAW : 19244664(ERG3_1) 19247970(ERG3_2)
MBRN : 26241976(G6M90_00g071150) 26242798(G6M90_00g058090)
PCHM : VFPPC_07065 VFPPC_18773
PLJ : 28886976(PLICBS_002287)
PTKZ : JDV02_002728(ERG3_1) JDV02_009539(ERG3_2)
VAL : VDBG_00635 VDBG_08651
VDA : VDAG_00248 VDAG_06314
CFJ : CFIO01_04916 CFIO01_13103
CHIG : CH63R_00352 CH63R_02632
CDET : 87937375(CDEST_00872) 87939051(CDEST_02548)
SAPO : SAPIO_CDS2999 SAPIO_CDS7892
PFY : PFICI_03760 PFICI_10769
BFU : BCIN_16g04720(Bcerg3)
ANI : ANIA_03638 ANIA_06506
AFM : AFUA_6G05140 AFUA_8G01070
ACT : ACLA_020750 ACLA_095400
NFI : NFIA_051710 NFIA_094510
AOR : AO090010000692 AO090103000138 AO090701000022
ANG : An15g00150 An16g02930
AFV : AFLA_004510 AFLA_013380 AFLA_014186
ALUC : AKAW2_60670A(ERG3) AKAW2_70254A
ACHE : ACHE_20394S ACHE_50257A(ERG3_1)
APUU : APUU_10781A(ERG3_1) APUU_60236S
PCS : N7525_002055 N7525_004854
PDP : PDIP_18830 PDIP_52770
TMF : EYB26_007177 EYB26_009632
TRG : TRUGW13939_07266 TRUGW13939_09806
CIM : CIMG_02610 CIMG_10100
CPW : CPC735_012260 CPC735_037410
PTRR : 6339351(PtrM4_015160)
BZE : COCCADRAFT_23737 COCCADRAFT_8476
BSC : COCSADRAFT_111459 COCSADRAFT_182796
BOR : COCMIDRAFT_2100 COCMIDRAFT_93800
AALT : CC77DRAFT_934207 CC77DRAFT_990455
ARAB : EKO05_0003036 EKO05_0003671
ZTR : MYCGRDRAFT_74506(ERG3)
NPA : UCRNP2_7814 UCRNP2_8453
SPO : 2542109(erg31) 3361266(erg32)
SOM : SOMG_01276(erg32) SOMG_01733(erg31)
CDEP : 91087960(L203_103750)
KMG : 30161126(I203_105503)
KNE : 92183885(IAR55_006627)
CCAC : CcaHIS019_0301770(ERG3)
LBC : LACBIDRAFT_190564(ERG3)
ABP : AGABI1DRAFT59529(AGABI1DRAFT_59529)
ABV : AGABI2DRAFT218236(AGABI2DRAFT_218236)
MRR : Moror_3018 Moror_3020
SCM : SCHCO_02543117(SCHCODRAFT_02543117) SCHCO_02632253(SCHCODRAFT_02632253)
CPUT : CONPUDRAFT_135618 CONPUDRAFT_159631 CONPUDRAFT_84469
MBR : MONBRDRAFT_24115 MONBRDRAFT_32318 MONBRDRAFT_39006
SRE : PTSG_01052 PTSG_08398 PTSG_11590
TET : TTHERM_00446080 TTHERM_00758950 TTHERM_01194720
PTM : GSPATT00009441001 GSPATT00010502001 GSPATT00010676001 GSPATT00017257001 GSPATT00019457001 GSPATT00019548001 GSPATT00024717001 GSPATT00029323001
SPAR : SPRG_11773 SPRG_18544
EHX : EMIHUDRAFT_220113 EMIHUDRAFT_435021 EMIHUDRAFT_441353
LMAT : 92516091(LSCM1_06147) 92516130(LSCM1_06186)
LOI : 92360696(LSCM4_04781)
LEIS : 94180845(GH5_05474)
LENR : 94172746(CUR178_05547)
LEIN : 94189930(JIQ42_06314)
PHET : 94290959(JKF63_04911)
SAGA : M5M_05095 M5M_16375
LAP : ACP90_12815 ACP90_12820
LABR : CHH27_07740 CHH27_07745 CHH27_17525
LABT : FIU93_18605 FIU93_18610
LAGG : B0E33_24755 B0E33_24760
RUT : FIU92_18035 FIU92_20650
CACT : HZ995_01330 HZ995_12175
PARJ : J4G78_04005 J4G78_15730
ALH : G6N82_08295 G6N82_13905
SUR : STAUR_2074 STAUR_2747
AGE : AA314_00282 AA314_07594
MRM : A7982_05543 A7982_06694 A7982_06884 A7982_09250
SAMY : DB32_000704 DB32_004537
LUO : HHL09_02055 HHL09_24385
AAGG : ETAA8_15100 ETAA8_64410
FLA : SY85_15460 SY85_21715
FGG : FSB75_15470 FSB75_20815
PEP : AQ505_09680 AQ505_15745
MGOT : MgSA37_00138 MgSA37_02250
STAE : HNV11_06130 HNV11_17455
PSEZ : HME7025_00151(erg3)
» show all
Taxonomy
Reference
Authors
DEMPSEY ME, SEATON JD, SCHROEPFER GJ Jr, TROCKMAN RW.
Title
THE INTERMEDIARY ROLE OF DELTA-5,7-CHOLESTADIEN-3-BETA-OL IN CHOLESTEROL BIOSYNTHESIS.
Journal
J Biol Chem 239:1381-7 (1964)
Reference
Authors
Honjo K, Ishibashi T, Imai Y
Title
Partial purification and characterization of lathosterol 5-desaturase from rat liver microsomes.
Journal
Reference
Authors
Arthington BA, Bennett LG, Skatrud PL, Guynn CJ, Barbuch RJ, Ulbright CE, Bard M
Title
Cloning, disruption and sequence of the gene encoding yeast C-5 sterol desaturase.
Journal
Sequence
Reference
Authors
Taton M, Rahier A.
Title
Plant sterol biosynthesis: identification and characterization of higher plant delta 7-sterol C5(6)-desaturase.
Journal
Reference
Authors
Nishino H, Nakaya J, Nishi S, Kurosawa T, Ishibashi T.
Title
Temperature-induced differential kinetic properties between an initial burst and the following steady state in membrane-bound enzymes: studies on lathosterol 5-desaturase.
Journal
Reference
Authors
Taton M, Husselstein T, Benveniste P, Rahier A.
Title
Role of highly conserved residues in the reaction catalyzed by recombinant Delta7-sterol-C5(6)-desaturase studied by site-directed mutagenesis.
Journal
Sequence
Reference
Authors
Poklepovich TJ, Rinaldi MA, Tomazic ML, Favale NO, Turkewitz AP, Nudel CB, Nusblat AD
Title
The cytochrome b5 dependent C-5(6) sterol desaturase DES5A from the endoplasmic reticulum of Tetrahymena thermophila complements ergosterol biosynthesis mutants in Saccharomyces cerevisiae.
Journal
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