6XL5: EcmrR-RNAP-promoter open complex

Cryo-EM structure of EcmrR-RNAP-promoter open complex (EcmrR-RPo). Determined by electron microscopy at 2.5 Å resolution. Released 7 Apr 2021.

Method
Electron microscopy
Resolution
2.5 Å
Organism
Escherichia coli O157:H7
Chains
10
Atoms
35,828
Mol. weight
560.22 kDa
Ligands
1N7, 118, ZN, MG
Released
7 Apr 2021

Explore 6XL5 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

6XL5 contains 209 α-helices and 253 β-strands across 8 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 8 helices, 18 β-strands

ElementResiduesLengthSheet
α-helix9-113
β-strand12-1871
β-strand23-3191
α-helix35-4713
β-strand52-61102
β-strand7013
β-strand7414
β-strand7713
α-helix78-869
β-strand90-9232
β-strand97-10592
β-strand108-11144
α-helix112-1143
β-strand11512
β-strand121-12332
β-strand129-13354
β-strand139-150122
β-strand152-15325
α-helix155-1573
β-strand170-17232
β-strand175-17625
β-strand180-189101
α-helix1901
β-strand199-20791
α-helix213-22715
α-helix229-2335
Chain B: 5 helices, 17 β-strands
ElementResiduesLengthSheet
β-strand13-1426
β-strand17-2046
β-strand23-3196
α-helix35-4915
β-strand52-61107
β-strand7418
α-helix78-869
β-strand90-9239
β-strand97-10597
β-strand108-11148
α-helix112-1143
β-strand11517
β-strand121-12339
β-strand129-13358
β-strand139-150127
β-strand152-153210
β-strand171-17227
β-strand175-176210
β-strand180-190116
β-strand198-207106
α-helix213-22715
α-helix228-2303
Chain C: 61 helices, 95 β-strands
ElementResiduesLengthSheet
α-helix11-122
β-strand13-14211
α-helix29-3911
α-helix48-569
α-helix571
β-strand59-60212
β-strand66-751012
α-helix82-887
β-strand93-1051312
β-strand114-1281512
α-helix1291
β-strand130113
β-strand136-138313
β-strand141-145513
β-strand147-151514
α-helix1521
β-strand154-160715
β-strand171-177715
β-strand180116
β-strand184-188515
β-strand194-198515
α-helix202-2032
β-strand204-205215
α-helix206-2127
α-helix217-2248
β-strand227-231517
β-strand238-240318
α-helix243-2464
α-helix271-2799
β-strand284-286318
α-helix289-2924
β-strand296119
β-strand297117
β-strand301-302220
β-strand309-311320
β-strand316119
α-helix319-32810
β-strand332-336517
α-helix346-3516
α-helix359-37012
α-helix375-3773
α-helix378-38811
β-strand396116
α-helix399-40810
α-helix422-43615
β-strand451-454414
α-helix456-47924
α-helix489-4913
α-helix495-50814
β-strand512-514313
α-helix520-5278
β-strand529-531314
β-strand533121
β-strand538121
α-helix552-5543
β-strand558122
β-strand572-574314
β-strand575122
β-strand576123
β-strand580-581224
β-strand587-594824
β-strand598125
β-strand599-607924
α-helix608-6114
β-strand616-617224
β-strand623126
β-strand628125
β-strand629126
β-strand633-637524
β-strand642-646524
β-strand652-654324
β-strand662123
α-helix665-6673
α-helix671-6733
β-strand674127
α-helix676-68611
β-strand689128
α-helix690-6912
β-strand700-701211
α-helix705-7117
β-strand716-717229
β-strand722-728730
β-strand731-736630
α-helix738-7403
α-helix741-7422
β-strand748-752530
α-helix753-7542
β-strand757-758231
β-strand763132
β-strand764-765231
β-strand768-769229
β-strand776-777230
β-strand782-785429
β-strand789-790233
β-strand793-794233
β-strand798-804734
α-helix812-8143
β-strand815-819534
α-helix820-8245
β-strand830-8411232
β-strand842-843235
β-strand846-847235
β-strand849-850236
β-strand865137
β-strand870138
β-strand871137
α-helix8721
β-strand876-877232
β-strand882-884338
β-strand886-889436
α-helix897-90610
α-helix908-9114
β-strand913-915336
β-strand918-919238
α-helix920-9212
β-strand926-9351032
α-helix940-9412
α-helix943-98139
α-helix995-9995
α-helix1007-103731
α-helix1042-10432
β-strand1046-10581332
β-strand1065-1067334
β-strand1074-1080734
α-helix1082-10843
β-strand1087139
α-helix10921
β-strand1093139
α-helix10941
β-strand1096-1098334
α-helix1102-11054
β-strand1108127
α-helix1110-113324
α-helix1138-115013
α-helix1166-117510
β-strand1182-1183211
α-helix1192-120110
β-strand1209-1210234
β-strand1213139
α-helix12191
β-strand1220139
α-helix12211
β-strand1225-12341034
β-strand1235128
α-helix1239-12424
β-strand1244140
β-strand1251141
β-strand1252142
β-strand1258141
β-strand1268-1270343
α-helix1272-12809
α-helix1284-12885
α-helix1289-12968
α-helix1298-130912
α-helix1321-133010
β-strand1335-1340644
Chain D: 72 helices, 87 β-strands
ElementResiduesLengthSheet
β-strand19-24644
α-helix25-262
α-helix27-337
β-strand34-37445
β-strand44146
α-helix501
β-strand51146
α-helix521
α-helix59-624
β-strand66147
β-strand69147
α-helix831
β-strand84148
α-helix851
β-strand91148
α-helix95-995
β-strand102-1121145
α-helix115-1184
α-helix1221
α-helix123-1286
α-helix132-1398
β-strand144-148549
α-helix154-1552
β-strand159-160249
α-helix162-17110
α-helix173-1753
β-strand177-179349
α-helix182-19110
α-helix194-20512
α-helix211-22919
α-helix234-2374
β-strand238-244745
β-strand253-254250
β-strand260-262350
α-helix264-28522
α-helix289-30719
α-helix315-3162
β-strand317151
β-strand323151
α-helix327-3315
α-helix3371
α-helix338-3425
β-strand345-347343
β-strand350-354540
β-strand355-357352
β-strand365-369552
α-helix370-3767
α-helix378-38710
α-helix394-40310
α-helix406-41510
β-strand421-424440
α-helix431-4333
β-strand434-437440
β-strand438-442552
β-strand447-449352
α-helix451-4533
α-helix454-4574
β-strand465-469540
α-helix474-4796
α-helix480-4845
β-strand485140
α-helix486-4883
β-strand491153
β-strand498153
α-helix505-5139
β-strand517154
β-strand526-527255
α-helix530-5389
β-strand546154
β-strand547-5571155
β-strand563-5731155
α-helix574-5807
α-helix589-5913
α-helix598-61215
α-helix614-63522
α-helix641-6433
α-helix650-66920
α-helix675-70228
β-strand704-709656
β-strand712-716556
α-helix721-7277
α-helix734-7418
β-strand745157
β-strand748158
α-helix7531
β-strand754158
α-helix7551
β-strand759157
α-helix766-7672
α-helix769-80436
β-strand809-811359
β-strand820-822360
β-strand825-827361
β-strand828162
β-strand830-833461
α-helix835-8395
β-strand843163
β-strand844160
β-strand848-849264
β-strand856-858364
β-strand863163
α-helix866-8749
β-strand880-882360
β-strand894-895259
α-helix896-8994
β-strand901165
β-strand908165
α-helix909-9102
α-helix915-92410
α-helix925-9295
β-strand949-951366
β-strand956167
β-strand957-961562
β-strand965-966266
β-strand973-975366
β-strand981-985562
β-strand991-995562
β-strand1001-1003366
β-strand1011167
β-strand1016-1019466
β-strand1024-1028568
β-strand1033-1038669
β-strand1047-1049368
β-strand1058-1061468
α-helix1075-10762
β-strand1077-1081569
α-helix10861
β-strand1087169
α-helix10881
β-strand1089170
α-helix10901
β-strand1096170
β-strand1098-1100369
β-strand1105-1107368
β-strand1114-1115269
β-strand1120-1125668
α-helix1138-11458
β-strand1155-1156271
β-strand1161-1165572
β-strand1172-1178772
β-strand1187-1191572
β-strand1196171
β-strand1203-1204272
β-strand1209-1211371
α-helix1215-12162
α-helix1217-12237
α-helix1226-124318
α-helix1251-126010
β-strand1263-1268673
β-strand1279-1281373
α-helix1282-129211
β-strand1301-1304473
α-helix1309-13135
α-helix1319-13257
α-helix1328-133811
β-strand1341-1342244
α-helix1347-13526
α-helix1360-13623
α-helix1363-13719
Chain E: 5 helices, 0 β-strands
ElementResiduesLengthSheet
α-helix7-126
α-helix16-3116
α-helix35-373
α-helix46-549
α-helix61-7717
Chain F: 36 helices, 6 β-strands
ElementResiduesLengthSheet
α-helix97-1059
α-helix109-1113
α-helix113-13422
α-helix138-15215
α-helix158-1603
β-strand162-165474
α-helix214-23219
α-helix245-25612
β-strand259-261374
α-helix263-29432
α-helix306-3094
α-helix317-3204
α-helix325-3295
α-helix330-3334
α-helix338-3414
α-helix344-3518
α-helix355-38228
α-helix384-3918
α-helix392-3943
α-helix401-41818
α-helix421-4233
α-helix427-44620
α-helix451-4533
α-helix454-47421
α-helix477-4793
α-helix480-4867
α-helix491-50010
α-helix503-5042
β-strand505-506250
α-helix5091
β-strand510175
α-helix511-5133
β-strand518175
α-helix519-5224
β-strand524142
α-helix528-5303
α-helix531-54919
α-helix553-56210
α-helix573-5808
α-helix584-59916
α-helix601-6044
α-helix608-6103
Chain G: 11 helices, 14 β-strands
ElementResiduesLengthSheet
β-strand3176
α-helix4-118
α-helix15-2410
β-strand31-32276
β-strand39-40276
α-helix43-5614
α-helix62-709
α-helix75-10632
β-strand117-121577
α-helix122-1232
β-strand124-1331077
α-helix136-1394
α-helix143-15311
α-helix1581
β-strand159177
α-helix1601
β-strand165-169577
β-strand179-187977
β-strand198-202577
β-strand205-213977
α-helix219-23214
β-strand235-237378
β-strand242-247677
β-strand259-265777
β-strand266-268378
Chain H: 11 helices, 16 β-strands
ElementResiduesLengthSheet
β-strand3179
α-helix4-118
α-helix15-2410
β-strand31-32279
β-strand39-40279
α-helix43-5614
α-helix62-687
α-helix76-10833
β-strand117-121580
β-strand124-1331080
α-helix136-15318
β-strand159180
β-strand165-169580
β-strand179-187980
β-strand194181
β-strand197181
β-strand198-202580
α-helix203-2042
β-strand205-213980
α-helix216-2183
α-helix219-23214
β-strand235-237382
α-helix240-2412
β-strand242-244380
α-helix255-2573
β-strand259-265780
β-strand266-268382

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
DNA-directed RNA polymerase subunit alphaA, Bprotein329Escherichia coli O157:H7P0A7Z4 (AlphaFold model)
DNA-directed RNA polymerase subunit betaCprotein1342Escherichia coli O157:H7P0A8V2 (AlphaFold model)
DNA-directed RNA polymerase subunit beta'Dprotein1407Escherichia coli O157:H7P0A8T7 (AlphaFold model)
DNA-directed RNA polymerase subunit omegaEprotein91Escherichia coli O157:H7P0A800 (AlphaFold model)
RNA polymerase sigma factor RpoDFprotein613Escherichia coli O157:H7P00579
synthetic non-template strand DNA (54-MER)NDNA54Escherichia coli O157:H7
synthetic template strand DNA (54-MER)TDNA54Escherichia coli O157:H7
MerR family transcriptional regulator EcmrRG, Hprotein268Escherichia coli O157:H7A0A8I3B050
Sequence of entity 1 (A, B), FASTA
>6XL5_1 DNA-directed RNA polymerase subunit alpha (chains A, B)
MQGSVTEFLKPRLVDIEQVSSTHAKVTLEPLERGFGHTLGNALRRILLSSMPGCAVTEVE
IDGVLHEYSTKEGVQEDILEILLNLKGLAVRVQGKDEVILTLNKSGIGPVTAADITHDGD
VEIVKPQHVICHLTDENASISMRIKVQRGRGYVPASTRIHSEEDERPIGRLLVDACYSPV
ERIAYNVEAARVEQRTDLDKLVIEMETNGTIDPEEAIRRAATILAEQLEAFVDLRDVRQP
EVKEEKPEFDPILLRPVDDLELTVRSANCLKAEAIHYIGDLVQRTEVELLKTPNLGKKSL
TEIKDVLASRGLSLGMRLENWPPASIADE
Sequence of entity 2 (C), FASTA
>6XL5_2 DNA-directed RNA polymerase subunit beta (chains C)
MVYSYTEKKRIRKDFGKRPQVLDVPYLLSIQLDSFQKFIEQDPEGQYGLEAAFRSVFPIQ
SYSGNSELQYVSYRLGEPVFDVQECQIRGVTYSAPLRVKLRLVIYEREAPEGTVKDIKEQ
EVYMGEIPLMTDNGTFVINGTERVIVSQLHRSPGVFFDSDKGKTHSSGKVLYNARIIPYR
GSWLDFEFDPKDNLFVRIDRRRKLPATIILRALNYTTEQILDLFFEKVIFEIRDNKLQME
LVPERLRGETASFDIEANGKVYVEKGRRITARHIRQLEKDDVKLIEVPVEYIAGKVVAKD
YIDESTGELICAANMELSLDLLAKLSQSGHKRIETLFTNDLDHGPYISETLRVDPTNDRL
SALVEIYRMMRPGEPPTREAAESLFENLFFSEDRYDLSAVGRMKFNRSLLREEIEGSGIL
SKDDIIDVMKKLIDIRNGKGEVDDIDHLGNRRIRSVGEMAENQFRVGLVRVERAVKERLS
LGDLDTLMPQDMINAKPISAAVKEFFGSSQLSQFMDQNNPLSEITHKRRISALGPGGLTR
ERAGFEVRDVHPTHYGRVCPIETPEGPNIGLINSLSVYAQTNEYGFLETPYRKVTDGVVT
DEIHYLSAIEEGNYVIAQANSNLDEEGHFVEDLVTCRSKGESSLFSRDQVDYMDVSTQQV
VSVGASLIPFLEHDDANRALMGANMQRQAVPTLRADKPLVGTGMERAVAVDSGVTAVAKR
GGVVQYVDASRIVIKVNEDEMYPGEAGIDIYNLTKYTRSNQNTCINQMPCVSLGEPVERG
DVLADGPSTDLGELALGQNMRVAFMPWNGYNFEDSILVSERVVQEDRFTTIHIQELACVS
RDTKLGPEEITADIPNVGEAALSKLDESGIVYIGAEVTGGDILVGKVTPKGETQLTPEEK
LLRAIFGEKASDVKDSSLRVPNGVSGTVIDVQVFTRDGVEKDKRALEIEEMQLKQAKKDL
SEELQILEAGLFSRIRAVLVAGGVEAEKLDKLPRDRWLELGLTDEEKQNQLEQLAEQYDE
LKHEFEKKLEAKRRKITQGDDLAPGVLKIVKVYLAVKRRIQPGDKMAGRHGNKGVISKIN
PIEDMPYDENGTPVDIVLNPLGVPSRMNIGQILETHLGMAAKGIGDKINAMLKQQQEVAK
LREFIQRAYDLGADVRQKVDLSTFSDEEVMRLAENLRKGMPIATPVFDGAKEAEIKELLK
LGDLPTSGQIRLYDGRTGEQFERPVTVGYMYMLKLNHLVDDKMHARSTGSYSLVTQQPLG
GKAQFGGQRFGEMEVWALEAYGAAYTLQEMLTVKSDDVNGRTKMYKNIVDGNHQMEPGMP
ESFNVLLKEIRSLGINIELEDE
Sequence of entity 3 (D), FASTA
>6XL5_3 DNA-directed RNA polymerase subunit beta' (chains D)
MKDLLKFLKAQTKTEEFDAIKIALASPDMIRSWSFGEVKKPETINYRTFKPERDGLFCAR
IFGPVKDYECLCGKYKRLKHRGVICEKCGVEVTQTKVRRERMGHIELASPTAHIWFLKSL
PSRIGLLLDMPLRDIERVLYFESYVVIEGGMTNLERQQILTEEQYLDALEEFGDEFDAKM
GAEAIQALLKSMDLEQECEQLREELNETNSETKRKKLTKRIKLLEAFVQSGNKPEWMILT
VLPVLPPDLRPLVPLDGGRFATSDLNDLYRRVINRNNRLKRLLDLAAPDIIVRNEKRMLQ
EAVDALLDNGRRGRAITGSNKRPLKSLADMIKGKQGRFRQNLLGKRVDYSGRSVITVGPY
LRLHQCGLPKKMALELFKPFIYGKLELRGLATTIKAAKKMVEREEAVVWDILDEVIREHP
VLLNRAPTLHRLGIQAFEPVLIEGKAIQLHPLVCAAYNADFDGDQMAVHVPLTLEAQLEA
RALMMSTNNILSPANGEPIIVPSQDVVLGLYYMTRDCVNAKGEGMVLTGPKEAERLYRSG
LASLHARVKVRITEYEKDANGELVAKTSLKDTTVGRAILWMIVPKGLPYSIVNQALGKKA
ISKMLNTCYRILGLKPTVIFADQIMYTGFAYAARSGASVGIDDMVIPEKKHEIISEAEAE
VAEIQEQFQSGLVTAGERYNKVIDIWAAANDRVSKAMMDNLQTETVINRDGQEEKQVSFN
SIYMMADSGARGSAAQIRQLAGMRGLMAKPDGSIIETPITANFREGLNVLQYFISTHGAR
KGLADTALKTANSGYLTRRLVDVAQDLVVTEDDCGTHEGIMMTPVIEGGDVKEPLRDRVL
GRVTAEDVLKPGTADILVPRNTLLHEQWCDLLEENSVDAVKVRSVVSCDTDFGVCAHCYG
RDLARGHIINKGEAIGVIAAQSIGEPGTQLTMRTFHIGGAASRAAAESSIQVKNKGSIKL
SNVKSVVNSSGKLVITSRNTELKLIDEFGRTKESYKVPYGAVLAKGDGEQVAGGETVANW
DPHTMPVITEVSGFVRFTDMIDGQTITRQTDELTGLSSLVVLDSAERTAGGKDLRPALKI
VDAQGNDVLIPGTDMPAQYFLPGKAIVQLEDGVQISSGDTLARIPQESGGTKDITGGLPR
VADLFEARRPKEPAILAEISGIVSFGKETKGKRRLVITPVDGSDPYEEMIPKWRQLNVFE
GERVERGDVISDGPEAPHDILRLRGVHAVTRYIVNEVQDVYRLQGVKINDKHIEVIVRQM
LRKATIVNAGSSDFLEGEQVEYSRVKIANRELEANGKVGATYSRDLLGITKASLATESFI
SAASFQETTRVLTEAAVAGKRDELRGLKENVIVGRLIPAGTGYAYHQDRMRRRAAGEAPA
APQVTAEDASASLAELLNAGLGGSDNE
Sequence of entity 4 (E), FASTA
>6XL5_4 DNA-directed RNA polymerase subunit omega (chains E)
MARVTVQDAVEKIGNRFDLVLVAARRARQMQVGGKDPLVPEENDKTTVIALREIEEGLIN
NQILDVRERQEQQEQEAAELQAVTAIAEGRR
Sequence of entity 5 (F), FASTA
>6XL5_5 RNA polymerase sigma factor RpoD (chains F)
MEQNPQSQLKLLVTRGKEQGYLTYAEVNDHLPEDIVDSDQIEDIIQMINDMGIQVMEEAP
DADDLMLAENTADEDAAEAAAQVLSSVESEIGRTTDPVRMYMREMGTVELLTREGEIDIA
KRIEDGINQVQCSVAEYPEAITYLLEQYDRVEAEEARLSDLITGFVDPNAEEDLAPTATH
VGSELSQEDLDDDEDEDEEDGDDDSADDDNSIDPELAREKFAELRAQYVVTRDTIKAKGR
SHATAQEEILKLSEVFKQFRLVPKQFDYLVNSMRVMMDRVRTQERLIMKLCVEQCKMPKK
NFITLFTGNETSDTWFNAAIAMNKPWSEKLHDVSEEVHRALQKLQQIEEETGLTIEQVKD
INRRMSIGEAKARRAKKEMVEANLRLVISIAKKYTNRGLQFLDLIQEGNIGLMKAVDKFE
YRRGYKFSTYATWWIRQAITRSIADQARTIRIPVHMIETINKLNRISRQMLQEMGREPTP
EELAERMLMPEDKIRKVLKIAKEPISMETPIGDDEDSHLGDFIEDTTLELPLDSATTESL
RAATHDVLAGLTAREAKVLRMRFGIDMNTDYTLEEVGKQFDVTRERIRQIEAKALRKLRH
PSRSEVLRSFLDD
Sequence of entity 6 (N), FASTA
>6XL5_6 synthetic non-template strand DNA (54-MER) (chains N)
GCCTTGACCCTCCCCTAAGGGGAGGGTTTAGATTGTGTGCAGTCTGACGCGGCG
Sequence of entity 7 (T), FASTA
>6XL5_7 synthetic template strand DNA (54-MER) (chains T)
CGCCGCGTCAGACTCGTAGGAATCTAAACCCTCCCCTTAGGGGAGGGTCAAGGC
Sequence of entity 8 (G, H), FASTA
>6XL5_8 MerR family transcriptional regulator EcmrR (chains G, H)
SQIGLFSKICRVTIKTLHYYNKIGLLVPAYINPDNGYRFYTSDQLMKFHQIASLRQLGFT
ITEIVTLTQDENSCHIIERRRLEIQKQIRDMADMLSRINHYLQHKKKERIMLYQAALKEI
PECIVYSKRFIVPDFSSYIKLIPPIGQEVMKANPGLTLTTPAYCFTLYHDKEYKEKNMDV
EFCEAVNDFGKNEGNIIFQVIPAITAVTVIHKGPYDSLRNAYIYLMQWVEDNGYLLTNSP
RESYIDGIWNKQDSAEWMTEIQFPVEKV

Ligands and cofactors

IDNameFormulaCopies
1N7ChapsoC32 H59 N2 O8 S5
118Tetraphenylantimonium ionC24 H20 Sb2
ZNZinc ionZn2
MGMagnesium ionMg1

Primary citation

Structural visualization of transcription activated by a multidrug-sensing MerR family regulator. Yang, Y., Liu, C., Zhou, W. et al. Nat Commun (2021) 12:2702-2702. DOI 10.1038/s41467-021-22990-8 · PubMed

Other PDB entries of the same protein (UniProt P0A7Z4 (AlphaFold model), which also has an AlphaFold model), best resolution first:

Browse structure collections

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