9LWJ: Structural maintenance of chromosomes protein 6

The head-arm region of HBx-Smc5/6 ubiquitination complex. Determined by electron microscopy at 7.19 Å resolution. Released 29 Apr 2026.

Method
Electron microscopy
Resolution
7.19 Å
Organisms
Homo sapiens, Hepatitis B virus
Chains
10
Atoms
33,722
Mol. weight
631.24 kDa
Ligands
ZN
Released
29 Apr 2026

Explore 9LWJ in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9LWJ contains 150 α-helices and 179 β-strands across 10 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: 14 helices, 19 β-strands

ElementResiduesLengthSheet
β-strand45-5281
β-strand5612
β-strand5912
β-strand72-7543
α-helix84-929
α-helix97-993
β-strand10014
β-strand10314
α-helix1111
β-strand116-125101
α-helix133-1364
β-strand139-14791
β-strand152-15761
β-strand163-16531
α-helix168-17710
α-helix191-1944
α-helix195-1995
α-helix203-21412
α-helix216-384169
α-helix757-85094
α-helix864-88522
α-helix892-95160
β-strand95515
β-strand958-96146
β-strand966-96946
β-strand97215
α-helix991-100616
β-strand1011-101227
β-strand101513
α-helix1023-103917
β-strand1044-104527
β-strand1046-104943
β-strand1064-106523
Chain B: 11 helices, 100 β-strands
ElementResiduesLengthSheet
β-strand4-1078
β-strand17-2159
β-strand30-3459
β-strand38-4369
β-strand50-5679
β-strand64-67410
β-strand76-80510
β-strand85-941010
β-strand97-1071110
β-strand115111
β-strand123-124211
β-strand130-136711
β-strand139-144611
β-strand155-158411
β-strand164-169612
α-helix1701
β-strand177-182612
β-strand189-196812
β-strand201-209912
β-strand218113
β-strand221113
β-strand229-232413
β-strand237-240413
β-strand247-248213
α-helix253-2553
β-strand258-263614
β-strand270-275614
β-strand279-2891114
β-strand295-3071314
β-strand313-318615
β-strand321-325515
β-strand331-336615
α-helix342-3443
β-strand347-353715
β-strand359-363516
β-strand376-379416
β-strand386-391616
β-strand394117
β-strand396-402718
β-strand407-413719
β-strand424-429619
β-strand433-439719
β-strand442-445419
β-strand457-463720
β-strand467-472620
β-strand476-480520
β-strand486-490520
β-strand500-503421
β-strand507-512621
β-strand515-521721
β-strand526-533821
β-strand538-542522
β-strand555-560622
β-strand567-570422
α-helix572-5743
β-strand575122
β-strand588-595823
β-strand600-606723
β-strand610-615623
β-strand616-617224
β-strand622-623224
β-strand628-630323
β-strand637-642625
β-strand647-652625
β-strand657-661525
β-strand666-670525
β-strand671117
β-strand678-681418
β-strand691-694418
β-strand699-704618
β-strand711-716616
β-strand720-727826
β-strand732-7441326
β-strand748-751426
β-strand763-765326
β-strand785-7951126
β-strand801-806626
β-strand811-819927
β-strand828-835827
β-strand846-853827
β-strand858-866927
β-strand873-876428
β-strand879-883528
β-strand888-893628
β-strand899-905728
β-strand913-917529
β-strand920-924529
β-strand930-936729
β-strand941-944429
β-strand947130
β-strand956-961631
β-strand964-968531
β-strand974-979631
α-helix986-9905
β-strand991130
β-strand992-998731
β-strand1004-100968
β-strand1028-103258
β-strand1037-104268
α-helix1045-106117
α-helix1063-10642
β-strand1076-1077232
β-strand1082-1083232
β-strand1086131
β-strand1088-109038
α-helix1091-10966
α-helix1097-10993
α-helix1102-11087
β-strand1113133
β-strand1123133
α-helix1126-113914
Chain C: 5 helices, 2 β-strands
ElementResiduesLengthSheet
β-strand59134
α-helix61-633
α-helix69-713
α-helix89-9810
α-helix105-12319
α-helix127-1348
β-strand141134
Chain D: 12 helices, 0 β-strands
ElementResiduesLengthSheet
α-helix26-5328
α-helix54-563
α-helix65-7713
α-helix83-10826
α-helix116-12712
α-helix139-1413
α-helix147-16115
α-helix216-2194
α-helix221-2233
α-helix255-26814
α-helix307-3082
α-helix312-32110
Chain E: 13 helices, 11 β-strands
ElementResiduesLengthSheet
α-helix82-9918
β-strand107135
α-helix108-1114
α-helix112-1165
α-helix123-13715
β-strand140-144536
β-strand151135
β-strand152-156536
α-helix159-1613
α-helix177-18812
β-strand193-194237
α-helix195-2039
β-strand213138
β-strand217138
α-helix219-2213
α-helix222-2265
α-helix227-2293
β-strand233139
β-strand236-237237
β-strand246-248337
β-strand250139
α-helix252-2576
α-helix260-2656
α-helix279-29315
Chain F: 14 helices, 9 β-strands
ElementResiduesLengthSheet
α-helix13-2513
β-strand27-29340
α-helix30-4415
α-helix49-524
α-helix53-6412
α-helix65-673
β-strand69-75740
β-strand82-88740
α-helix94-974
α-helix103-11816
α-helix126-1316
α-helix143-15513
β-strand159-162441
β-strand165-168441
α-helix170-18314
β-strand190142
β-strand197142
β-strand201-203343
α-helix2041
β-strand210-212343
α-helix213-2197
α-helix233-2353
α-helix238-2458
Chain G: 43 helices, 15 β-strands
ElementResiduesLengthSheet
α-helix51-522
α-helix55-573
α-helix59-7315
α-helix74-763
α-helix83-9311
α-helix99-11820
α-helix119-1213
α-helix128-15225
α-helix154-1563
α-helix157-1615
α-helix168-1692
α-helix170-18112
α-helix187-20317
α-helix211-22313
α-helix2271
α-helix228-2325
α-helix233-25321
α-helix256-27722
α-helix280-2823
α-helix283-29412
α-helix299-3046
α-helix307-3137
α-helix316-32813
α-helix330-35324
α-helix356-3594
α-helix361-37515
α-helix376-3805
α-helix384-39815
α-helix404-41714
β-strand418144
α-helix426-44217
α-helix446-46217
β-strand466144
α-helix469-47911
α-helix485-51531
β-strand525-529545
α-helix534-5352
α-helix545-55915
β-strand565-570645
β-strand575146
β-strand578-579247
β-strand582148
β-strand585148
β-strand588-589247
β-strand592146
α-helix593-6019
α-helix602-6043
α-helix610-6178
α-helix621-6299
β-strand639-641349
β-strand654-656349
β-strand667147
α-helix670-6745
α-helix678-70629
α-helix712-72211
α-helix729-74113
β-strand745-748450
β-strand751-757750
Chain H: 1 helix, 5 β-strands
ElementResiduesLengthSheet
β-strand29-35745
α-helix54-574
β-strand70-71251
β-strand79-80251
β-strand93152
β-strand100152

2 more chain groups are not listed. Open the entry in the viewer and use the sequence panel to see them.

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Structural maintenance of chromosomes protein 6Aprotein1091Homo sapiensQ96SB8 (AlphaFold model)
DNA damage-binding protein 1Bprotein1140Homo sapiensQ16531 (AlphaFold model)
Protein XCprotein154Hepatitis B virusQ2F514
EP300-interacting inhibitor of differentiation 3Dprotein333Homo sapiensQ8N140 (AlphaFold model)
Non-structural maintenance of chromosomes element 3 homologEprotein304Homo sapiensQ96MG7
Non-structural maintenance of chromosomes element 1 homologFprotein266Homo sapiensQ8WV22
Cullin-4AGprotein760Homo sapiensQ13619
E3 ubiquitin-protein ligase RBX1Hprotein108Homo sapiensP62877
Structural maintenance of chromosomes protein 5Iprotein1101Homo sapiensQ8IY18
E3 SUMO-protein ligase NSE2Jprotein247Homo sapiensQ96MF7
Sequence of entity 1 (A), FASTA
>9LWJ_1 Structural maintenance of chromosomes protein 6 (chains A)
MAKRKEENFSSPKNAKRPRQEELEDFDKDGDEDECKGTTLTAAEVGIIESIHLKNFMCHS
MLGPFKFGSNVNFVVGNNGSGKSAVLTALIVGLGGRAVATNRGSSLKGFVKDGQNSADIS
ITLRNRGDDAFKASVYGNSILIQQHISIDGSRSYKLKSATGSVVSTRKEELIAILDHFNI
QVDNPVSVLTQEMSKQFLQSKNEGDKYKFFMKATQLEQMKEDYSYIMETKERTKEQIHQG
EERLTELKRQCVEKEERFQSIAGLSTMKTNLESLKHEMAWAVVNEIEKQLNAIRDNIKIG
EDRAARLDRKMEEQQVRLNEAEQKYKDIQDKLEKISEETNARAPECMALKADVVAKKRAY
NEAEVLYNRSLNEYKALKKDDEQLCKRIEELKKSTDQSLEPERLERQKKISWLKERVKAF
QNQENSVNQEIEQFQQAIEKDKEEHGKIKREELDVKHALSYNQRQLKELKDSKTDRLKRF
GPNVPALLEAIDDAYRQGHFTYKPVGPLGACIHLRDPELALAIESCLKGLLQAYCCHNHA
DERVLQALMKRFYLPGTSRPPIIVSEFRNEIYDVRHRAAYHPDFPTVLTALEIDNAVVAN
SLIDMRGIETVLLIKNNSVARAVMQSQKPPKNCREAFTADGDQVFAGRYYSSENTRPKFL
SRDVDSEISDLENEVENKTAQILNLQQHLSALEKDIKHNEELLKRCQLHYKELKMKIRKN
ISEIRELENIEEHQSVDIATLEDEAQENKSKMKMVEEHMEQQKENMEHLKSLKIEAENKY
DAIKFKINQLSELADPLKDELNLADSEVDNQKRGKRHYEEKQKEHLDTLNKKKRELDMKE
KELEEKMSQARQICPERIEVEKSASILDKEINRLRQKIQAEHASHGDREEIMRQYQEARE
TYLDLDSKVRTLKKFIKLLGEIMEHRFKTYQQFRRCLTLRCKLYFDNLLSQRAYCGKMNF
DHKNETLSISVQPGEGNKAAFNDMRALSGGERSFSTVCFILSLWSIAESPFRCLDEFDVY
MDMVNRRIAMDLILKMADSQRFRQFILLTPQSMSSLPSSKLIRILRMSDPERGQTTLPFR
PVTQEEDDDQR
Sequence of entity 2 (B), FASTA
>9LWJ_2 DNA damage-binding protein 1 (chains B)
MSYNYVVTAQKPTAVNGCVTGHFTSAEDLNLLIAKNTRLEIYVVTAEGLRPVKEVGMYGK
IAVMELFRPKGESKDLLFILTAKYNACILEYKQSGESIDIITRAHGNVQDRIGRPSETGI
IGIIDPECRMIGLRLYDGLFKVIPLDRDNKELKAFNIRLEELHVIDVKFLYGCQAPTICF
VYQDPQGRHVKTYEVSLREKEFNKGPWKQENVEAEASMVIAVPEPFGGAIIIGQESITYH
NGDKYLAIAPPIIKQSTIVCHNRVDPNGSRYLLGDMEGRLFMLLLEKEEQMDGTVTLKDL
RVELLGETSIAECLTYLDNGVVFVGSRLGDSQLVKLNVDSNEQGSYVVAMETFTNLGPIV
DMCVVDLERQGQGQLVTCSGAFKEGSLRIIRNGIGIHEHASIDLPGIKGLWPLRSDPNRE
TDDTLVLSFVGQTRVLMLNGEEVEETELMGFVDDQQTFFCGNVAHQQLIQITSASVRLVS
QEPKALVSEWKEPQAKNISVASCNSSQVVVAVGRALYYLQIHPQELRQISHTEMEHEVAC
LDITPLGDSNGLSPLCAIGLWTDISARILKLPSFELLHKEMLGGEIIPRSILMTTFESSH
YLLCALGDGALFYFGLNIETGLLSDRKKVTLGTQPTVLRTFRSLSTTNVFACSDRPTVIY
SSNHKLVFSNVNLKEVNYMCPLNSDGYPDSLALANNSTLTIGTIDEIQKLHIRTVPLYES
PRKICYQEVSQCFGVLSSRIEVQDTSGGTTALRPSASTQALSSSVSSSKLFSSSTAPHET
SFGEEVEVHNLLIIDQHTFEVLHAHQFLQNEYALSLVSCKLGKDPNTYFIVGTAMVYPEE
AEPKQGRIVVFQYSDGKLQTVAEKEVKGAVYSMVEFNGKLLASINSTVRLYEWTTEKELR
TECNHYNNIMALYLKTKGDFILVGDLMRSVLLLAYKPMEGNFEEIARDFNPNWMSAVEIL
DDDNFLGAENAFNLFVCQKDSAATTDEERQHLQEVGLFHLGEFVNVFCHGSLVMQNLGET
STPTQGSVLFGTVNGMIGLVTSLSESWYNLLLDMQNRLNKVIKSVGKIEHSFWRSFHTER
KTEPATGFIDGDLIESFLDISRPKMQEVVANLQYDDGSGMKREATADDLIKVVEELTRIH
Sequence of entity 3 (C), FASTA
>9LWJ_3 Protein X (chains C)
MAARLCCQLDPARDVLCLRPVGAESCGRPFSGSLGTLSSPSPSAVPTDHGAHLSLRGLPV
CAFSSAGPCALRFTSARRMETTVNAHQILPKVLHKRTLGLSAMSTTDLEAYFKDCLFKDW
EELGEEIRLKVFVLGGCRHKLVCAPAPCNFFTSA
Sequence of entity 4 (D), FASTA
>9LWJ_4 EP300-interacting inhibitor of differentiation 3 (chains D)
MKMDVSVRAAGCSDDLSSGEADVDPKLLELTADEEKCRSIRRQYRQLMYCVRQNREDIVS
SANNSLTEALEEANVLFDGVSRTREAALDARFLVMASDLGKEKAKQLNSDMNFFNQLAFC
DFLFLFVGLNWMEGDPDKLSDCDDSIALSFWKAIEKEATSWMVKAETFHFVFGSFKLERS
APKPRLEHQKKVRKMEENGNMPTKLQKLDLSSYPEATEKNVERILGLLQTYFRKYPDTPV
SYFEFVIDPNSFSRTVENIFYVSFIVRDGFARIRLDEDRLPILEPMNVNQMGEGNDSSCH
GRKQGVISLTLQEWKNIVAAFEISEAMITYSSY
Sequence of entity 5 (E), FASTA
>9LWJ_5 Non-structural maintenance of chromosomes element 3 homolog (chains E)
MLQKPRNRGRSGGQAERDRDWSHSGNPGASRAGEDARVLRDGFAEEAPSTSRGPGGSQGS
QGPSPQGARRAQAAPAVGPRSQKQLELKVSELVQFLLIKDQKKIPIKRADILKHVIGDYK
DIFPDLFKRAAERLQYVFGYKLVELEPKSNTYILINTLEPVEEDAEMRGDQGTPTTGLLM
IVLGLIFMKGNTIKETEAWDFLRRLGVYPTKKHLIFGDPKKLITEDFVRQRYLEYRRIPH
TDPVDYEFQWGPRTNLETSKMKVLKFVAKVHNQDPKDWPAQYCEALADEENRARPQPSGP
APSS
Sequence of entity 6 (F), FASTA
>9LWJ_6 Non-structural maintenance of chromosomes element 1 homolog (chains F)
MQGSTRRMGVMTDVHRRFLQLLMTHGVLEEWDVKRLQTHCYKVHDRNATVDKLEDFINNI
NSVLESLYIEIKRGVTEDDGRPIYALVNLATTSISKMATDFAENELDLFRKALELIIDSE
TGFASSTNILNLVDQLKGKKMRKKEAEQVLQKFVQNKWLIEKEGEFTLHGRAILEMEQYI
RETYPDAVKICNICHSLLIQGQSCETCGIRMHLPCVAKYFQSNAEPRCPHCNDYWPHEIP
KVFDPEKERESGVLKSNKKSLRSRQH
Sequence of entity 7 (G), FASTA
>9LWJ_7 Cullin-4A (chains G)
MADEAPRKGSFSALVGRTNGLTKPAALAAAPAKPGGAGGSKKLVIKNFRDRPRLPDNYTQ
DTWRKLHEAVRAVQSSTSIRYNLEELYQAVENLCSHKVSPMLYKQLRQACEDHVQAQILP
FREDSLDSVLFLKKINTCWQDHCRQMIMIRSIFLFLDRTYVLQNSTLPSIWDMGLELFRT
HIISDKMVQSKTIDGILLLIERERSGEAVDRSLLRSLLGMLSDLQVYKDSFELKFLEETN
CLYAAEGQRLMQEREVPEYLNHVSKRLEEEGDRVITYLDHSTQKPLIACVEKQLLGEHLT
AILQKGLDHLLDENRVPDLAQMYQLFSRVRGGQQALLQHWSEYIKTFGTAIVINPEKDKD
MVQDLLDFKDKVDHVIEVCFQKNERFVNLMKESFETFINKRPNKPAELIAKHVDSKLRAG
NKEATDEELERTLDKIMILFRFIHGKDVFEAFYKKDLAKRLLVGKSASVDAEKSMLSKLK
HECGAAFTSKLEGMFKDMELSKDIMVHFKQHMQNQSDSGPIDLTVNILTMGYWPTYTPME
VHLTPEMIKLQEVFKAFYLGKHSGRKLQWQTTLGHAVLKAEFKEGKKEFQVSLFQTLVLL
MFNEGDGFSFEEIKMATGIEDSELRRTLQSLACGKARVLIKSPKGKEVEDGDKFIFNGEF
KHKLFRIKINQIQMKETVEEQVSTTERVFQDRQYQIDAAIVRIMKMRKTLGHNLLVSELY
NQLKFPVKPGDLKKRIESLIDRDYMERDKDNPNQYHYVAG
Sequence of entity 8 (H), FASTA
>9LWJ_8 E3 ubiquitin-protein ligase RBX1 (chains H)
MAAAMDVDTPSGTNSGAGKKRFEVKKWNAVALWAWDIVVDNCAICRNHIMDLCIECQANQ
ASATSEECTVAWGVCNHAFHFHCISRWLKTRQVCPLDNREWEFQKYGH
Sequence of entity 9 (I), FASTA
>9LWJ_9 Structural maintenance of chromosomes protein 5 (chains I)
MATPSKKTSTPSPQPSKRALPRDPSSEVPSKRKNSAPQLPLLQSSGPFVEGSIVRISMEN
FLTYDICEVSPGPHLNMIVGANGTGKSSIVCAICLGLAGKPAFMGRADKVGFFVKRGCSR
GMVEIELFRASGNLVITREIDVAKNQSFWFINKKSTTQKIVEEKVAALNIQVGNLCQFLP
QDKVGEFAKLSKIELLEATEKSIGPPEMHKYHCELKNLREKEKQLETSCKEKTEYLQKMV
QRNERYKQDVERFYERKRHLDLIEMLEAKRPWVEYENVRQEYEEVKLVRDRVKEEVRKLK
EGQIPVTCRIEEMENERHNLEARIKEKATDIKEASQKCKQKQDVIERKDKHIEELQQALI
VKQNEELDRQRRIGNTRKMIEDLQNELKTTENCENLQPQIDAITNDLRRIQDEKALCEGE
IIDKRRERETLEKEKKSVDDHIVRFDNLMNQKEDKLRQRFRDTYDAVLWLRNNRDKFKQR
VCEPIMLTINMKDNKNAKYIENHIPSNDLRAFVFESQEDMEVFLKEVRDNKKLRVNAVIA
PKSSYADKAPSRSLNELKQYGFFSYLRELFDAPDPVMSYLCCQYHIHEVPVGTEKTRERI
ERVIQETRLKQIYTAEEKYVVKTSFYSNKVISSNTSLKVAQFLTVTVDLEQRRHLEEQLK
EIHRKLQAVDSGLIALRETSKHLEHKDNELRQKKKELLERKTKKRQLEQKISSKLGSLKL
MEQDTCNLEEEERKASTKIKEINVQKAKLVTELTNLIKICTSLHIQKVDLILQNTTVISE
KNKLESDYMAASSQLRLTEQHFIELDENRQRLLQKCKELMKRARQVCNLGAEQTLPQEYQ
TQVPTIPNGHNSSLPMVFQDLPNTLDEIDALLTEERSRASCFTGLNPTIVQEYTKREEEI
EQLTEELKGKKVELDQYRENISQVKERWLNPLKELVEKINEKFSNFFSSMQCAGEVDLHT
ENEEDYDKYGIRIRVKFRSSTQLHELTPHHQSGGERSVSTMLYLMALQELNRCPFRVVDE
INQGMDPINERRVFEMVVNTACKENTSQYFFITPKLLQNLPYSEKMTVLFVYNGPHMLEP
NTWNLKAFQRRRRRITFTQPS
Sequence of entity 10 (J), FASTA
>9LWJ_10 E3 SUMO-protein ligase NSE2 (chains J)
MPGRSSSNSGSTGFISFSGVESALSSLKNFQACINSGMDTASSVALDLVESQTEVSSEYS
MDKAMVEFATLDRQLNHYVKAVQSTINHVKEERPEKIPDLKLLVEKKFLALQSKNSDADF
QNNEKFVQFKQQLKELKKQCGLQADREADGTEGVDEDIIVTQSQTNFTCPITKEEMKKPV
KNKVCGHTYEEDAIVRMIESRQKRKKKAYCPQIGCSHTDIRKSDLIQDEALRRAIENHNK
KRHRHSE

Ligands and cofactors

IDNameFormulaCopies
ZNZinc ionZn6

Primary citation

Structural and functional insights into HBx-Smc6 targeting for HBV inhibition. Cheng, T., Zhou, J., Huang, W. et al. Cell Res (2026) 36:629-632. DOI 10.1038/s41422-026-01251-7 · PubMed

Other PDB entries of the same protein (UniProt Q96SB8 (AlphaFold model), which also has an AlphaFold model), best resolution first:

Browse structure collections

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