9V10: Cilia- and flagella-associated protein 95

Cryo-EM structure of the 48-nm repeat doublet microtubule from mouse sperm. Determined by electron microscopy at 3.7 Å resolution. Released 27 May 2026.

Method: Electron microscopy
Resolution: 3.7 Å
Organism: Mus musculus
Chains: 589
Atoms: 1,603,403
Mol. weight: 27941.67 kDa
Ligands: GTP, MG, GDP, ATP
Released: 27 May 2026

Explore 9V10 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9V10 contains 9,887 α-helices and 7,514 β-strands across 587 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 0: 4 helices, 0 β-strands

Element	Residues	Length
α-helix	31-34	4
α-helix	51-54	4
α-helix	55-57	3
α-helix	91-100	10

Chain 1: 23 helices, 6 β-strands

Element	Residues	Length	Sheet
α-helix	416-420	5
α-helix	426-434	9
α-helix	437-444	8
α-helix	479-485	7
α-helix	488-495	8
β-strand	499-501	3	90
α-helix	502-511	10
β-strand	534	1	91
α-helix	538-541	4
α-helix	545-550	6
α-helix	562-582	21
α-helix	587-593	7
β-strand	601	1	92
α-helix	603-612	10
α-helix	619-629	11
β-strand	637	1	92
α-helix	639-645	7
α-helix	656-659	4
α-helix	689-691	3
β-strand	692-694	3	93
β-strand	702-704	3	93
α-helix	705-709	5
α-helix	721-726	6
α-helix	769-773	5
α-helix	777-780	4
α-helix	785-789	5
α-helix	794-804	11
α-helix	810-822	13
α-helix	831-844	14

Chain 2: 18 helices, 3 β-strands

Element	Residues	Length	Sheet
α-helix	275-276	2
α-helix	282-283	2
β-strand	284	1	188
α-helix	288-290	3
α-helix	294-298	5
α-helix	300-301	2
α-helix	304-308	5
α-helix	312-318	7
α-helix	338-340	3
β-strand	343	1	189
α-helix	353-357	5
α-helix	360-363	4
α-helix	364-374	11
α-helix	378-381	4
α-helix	396	1
α-helix	416-420	5
α-helix	426-434	9
α-helix	437-444	8
β-strand	468	1	190
α-helix	480-485	6
α-helix	488-495	8

Chain 3: 4 helices, 2 β-strands

Element	Residues	Length	Sheet
β-strand	13	1	268
β-strand	22	1	268
α-helix	34-82	49
α-helix	84-118	35
α-helix	123-159	37
α-helix	163-464	302

Chain 4: 1 helix, 0 β-strands

Element	Residues	Length	Sheet
α-helix	382-492	111

Chain 5: 19 helices, 18 β-strands

Element	Residues	Length	Sheet
β-strand	27-34	8	419
β-strand	39-48	10	419
β-strand	53-58	6	419
β-strand	64-70	7	419
α-helix	76-78	3
β-strand	84-87	4	420
β-strand	90-93	4	420
β-strand	96-97	2	419
α-helix	101-105	5
β-strand	110-114	5	421
β-strand	117	1	421
α-helix	119-121	3
α-helix	125-134	10
β-strand	138-146	9	421
α-helix	149-155	7
α-helix	165-172	8
β-strand	177-185	9	421
α-helix	187-195	9
α-helix	200-206	7
α-helix	211-214	4
α-helix	230-240	11
β-strand	250-251	2	421
β-strand	258-263	6	421
α-helix	266-269	4
α-helix	273-281	9
β-strand	286-293	8	421
α-helix	297-303	7
β-strand	308	1	422
β-strand	311	1	422
α-helix	314-323	10
β-strand	326-332	7	421
α-helix	340-344	5
α-helix	349-355	7
α-helix	360-363	4
β-strand	373-374	2	421
α-helix	381-387	7
α-helix	388-392	5

Chain 6: 21 helices, 15 β-strands

Element	Residues	Length	Sheet
β-strand	26-34	9	485
β-strand	39-48	10	485
β-strand	53-58	6	485
β-strand	64-70	7	485
β-strand	84-87	4	486
β-strand	90-93	4	486
β-strand	96-97	2	485
α-helix	102-105	4
β-strand	110-114	5	487
β-strand	117	1	487
α-helix	119-121	3
α-helix	125-132	8
α-helix	133-135	3
β-strand	138-145	8	487
α-helix	151-155	5
α-helix	165-172	8
β-strand	177-185	9	487
α-helix	187-195	9
α-helix	200-205	6
α-helix	211-214	4
α-helix	230-240	11
α-helix	250-251	2
β-strand	260-263	4	487
α-helix	265-269	5
α-helix	273-281	9
β-strand	286-293	8	487
α-helix	297-300	4
α-helix	314-321	8
β-strand	326-332	7	487
α-helix	336-344	9
α-helix	349-355	7
α-helix	360-362	3
β-strand	374-375	2	487
α-helix	381-384	4
α-helix	386-387	2
α-helix	388-392	5

Chain 7: 7 helices, 2 β-strands

Element	Residues	Length	Sheet
α-helix	51-56	6
α-helix	91-100	10
α-helix	154-158	5
α-helix	166-168	3
α-helix	171-176	6
β-strand	198	1	560
β-strand	201	1	561
α-helix	211-217	7
α-helix	218-220	3

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

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Cilia- and flagella-associated protein 95	0, 7	protein	228	Mus musculus	Q9CQC3 (AlphaFold model)
EF-hand domain-containing family member B	1, 2	protein	853	Mus musculus	Q8CDU5 (AlphaFold model)
Cilia- and flagella-associated protein 53	3, 4	protein	514	Mus musculus	Q9D439 (AlphaFold model)
Nucleoside diphosphate kinase homolog 7	5, 6, j1	protein	395	Mus musculus	Q9QXL8 (AlphaFold model)
Cilia- and flagella-associated protein 107	8	protein	196	Mus musculus	Q4KKZ1
Cilia- and flagella-associated protein 141	A, N1	protein	101	Mus musculus	Q9D9D9
Tektin-1	A0, A1, A2, A3, A4, A5	protein	418	Mus musculus	Q9DAJ2
Tubulin alpha-3 chain	AA, AC, AE, AG, AI, AK, AM, AO, BC, BE, BG, BI, BK, BM, BO, CC, CE, CG, CI, CK, CM, CO, DC, DE, DG, DI, DK, DM, DO, EA, EC, EE, EG, EI, EK, EM, FC, FE, FG, FI, FK, FM, GC, GE, GG, GI, GK, GM, GO, HC, HE, HG, HI, HK, HM, HO, IC, IE, IG, II, IK, IM, IO, JC, JE, JG, JI, JK, JM, JO, JQ, KA, KC, KE, KG, KI, KK, KM, KO, LA, LC, LE, LG, LI, LK, LM, LO, MA, MC, ME, MG, MI, MK, MM, MO, NA, NC, NE, NG, NI, NK, NM, NO, OC, OE, OG, OI, OK, OM, OO, PC, PE, PG, PI, PK, PM, PO, QC, QE, QG, QI, QK, QM, QO, RC, RE, RG, RI, RK, RM, RO, SA, SC, SE, SG, SI, SK, SM, TA, TC, TE, TG, TI, TK, TM, UA, UC, UE, UG, UI, UK, UM, VA, VC, VE, VG, VI, VK, VM, VO, WC, WE, WG, WI, WK, WM, WO	protein	450	Mus musculus	P05214
Tubulin beta-4B chain	AB, AD, AF, AH, AJ, AL, AN, AP, BB, BD, BF, BH, BJ, BL, BN, BP, CD, CF, CH, CJ, CL, CN, CP, DD, DF, DH, DJ, DL, DN, DP, EB, ED, EF, EH, EJ, EL, EN, FB, FD, FF, FH, FJ, FL, FN, GB, GD, GF, GH, GJ, GL, GN, HB, HD, HF, HH, HJ, HL, HN, IB, ID, IF, IH, IJ, IL, IN, IP, JD, JF, JH, JJ, JL, JN, JP, KB, KD, KF, KH, KJ, KL, KN, KP, LB, LD, LF, LH, LJ, LL, LN, LP, MB, MD, MF, MH, MJ, ML, MN, MP, NB, ND, NF, NH, NJ, NL, NN, NP, OB, OD, OF, OH, OJ, OL, ON, OP, PB, PD, PF, PH, PJ, PL, PN, PP, QD, QF, QH, QJ, QL, QN, QP, RD, RF, RH, RJ, RL, RN, RP, SB, SD, SF, SH, SJ, SL, SN, TB, TD, TF, TH, TJ, TL, TN, UB, UD, UF, UH, UJ, UL, UN, VB, VD, VF, VH, VJ, VL, VN, WB, WD, WF, WH, WJ, WL, WN	protein	445	Mus musculus	P68372
Sperm axonemal maintenance protein CFAP97D1	Aa, Ab, Ac	protein	164	Mus musculus	Q9DAN9
Meiosis-specific nuclear structural protein 1	B, C	protein	491	Mus musculus	Q61884
Tektin-2	B0, B1, B2, B3, B4, B5, R0, R1, R2, R3, R4, R5	protein	430	Mus musculus	Q922G7

48 more molecules are not listed.

Sequence of entity 1 (0, 7), FASTA

>9V10_1 Cilia- and flagella-associated protein 95 (chains 0, 7)
MGTFDSQCHECFESKERWYEIGPTDLLERKGSLTLRSHHKKYSEPVLVYSWHRNREAFPK
DYDIESLETVKNLCMSTYKRFGSDSPRWMSEAREQMAQVLVNKDLVEKKKTGLLDEETLC
PGILERDPELPPTGFRDVPMESPPDPRKPCFSTTYSEDFTPQYEYPPPACPRREEYSIVH
RKCRSQFTDLNGSKRLGINTWHDESGIYANSEAKQKLYALARNPIVPF

Sequence of entity 2 (1, 2), FASTA

>9V10_2 EF-hand domain-containing family member B (chains 1, 2)
MCSFVRVGSPKPLQTSASPLEMSSLRRTRAPEISELGLTPEQKDDIRDRVLRGSKSPTEL
GFDLRLEQDRKWRERMGSSEAKSPPCHALGVGLERHTISGTPTEMGNLGLHKGSAFQGSK
PLGVLPGRVGPENKGLPPRLRYGGTLHPPFSTVHASPLAAESRRRPLAWGSAWTDAVVEK
QPVVGLELRKEPEKEPTCVVMNPYPEMPPKEVDIGLPQTQESDEAKNTEPLIGLVREPSE
CPFAQQPEEKKEPGSTEPGVEPPGNIRPIYSGKFFDRVPCWPSAGKVKPVGYRVATCLTE
KLPRLMTPPEAKKYFNFRYPPAGAERVFYGRANDPQIAPYLTHGLRSKISIPMGSLINPQ
PITTFQQKIKDKKESIYFSHQRAPLGKSHDQTPGLPKGMDVINTTLGTPTIRELSVRDTV
NPSKSFEDVLKEGQEGHDLYTVSHNDYFAGEAKNRKYNPASFHRFNLYGIPTPHFNDGRT
MAKALHWLHELQMERGAKIVSKRVDDFKEKFQHKLGKVLDPIAETMNVPPGHTFGSCLHP
EEYGAGDLIHYRSPDEYLRGKDHQRAVVAAARHHLKKFNHQNFDTLQVAFRHYDKKGDGV
IDRAELHEACVQANLHLDKMLLDHLFDYCDVDQDGLINYLEFANFLNWKDRIPLKEHEKR
VVVKGKKPDCENVTDTSMGEAEPSLLINPEDIVPKEPGSSEETLRTIQRPGDKVSHQYKT
TSSEINAVVGAVPSMCHPIFGVPTIRSDISAPRIRRVSDMNNYGDEGNAYSLLHPSIFSQ
KGVFERDFFKTRSKEEISDILTNIGVKLSKEEFENVWNLASKKHQRGEVCVETIRNVLDE
LLHADLVKCKTAM

Sequence of entity 3 (3, 4), FASTA

>9V10_3 Cilia- and flagella-associated protein 53 (chains 3, 4)
MYSQQFGTVPREFKGPTPKAVIIRAKPPKAQRAEQHLKRIQRSYHKYHTTLASIKSNEEN
RLKCDWIQRNNHKTFDSLVQARVQDAMQGFVINTEERRNKLRELLASEENEYFSEMQLKG
ETIEEKKDKMRERTKLLREKKEKERQEFVAEKLDQQFRERCEELRTKLASIHEKKVVEER
NAQIEFNKELKRQKLVEEHLFARLWEEDRLAKERREAQEEKRQRELVQNTRLGLDAQVTS
IQAQRQGARRMKEEEARILEQNKAQIKREDEQEKLQKQKRRQETRSSLKKAVQDKIESMQ
REYREDLDLNMKLVGRALQDLQDEADKKKQKREEMGREQKIYNDYLMQRREEEKAQEKEL
NRLLEDIKAKKLAEKDRELALQRAARKQLMNEVMNTRKLQVQERLQRKLREQEELALHEQ
RISESLKVLHQEDMEDFARRCALAEEYRNQLQMQIAHQQQAREAEKEEERQEFEAGLAAN
KACLDKIQRILSENQALSQNVHPMRRGYPDKPPL

Sequence of entity 4 (5, 6, j1), FASTA

>9V10_4 Nucleoside diphosphate kinase homolog 7 (chains 5, 6, j1)
MRACQQGRSSSLVSPYMAPKNQSERFAFIAEWYDPNASLLRRYELLFYPVDGSVEMHDVK
NRRTFLKRTKYEDLRLEDLFIGNKVNVFSRQLVLIDYGDQYTARQLGSRKEKTLALIKPD
AVSKAGEIIEMINKSGFTITKLRMMTLTRKEAADFHVDHHSRPFYNELIQFITSGPVIAM
EILRDDAICEWKRLLGPANSGLSRTDAPGSIRALFGTDGVRNAAHGPDTFASAAREMELF
FPSSGGCGPANTAKFTNCTCCIIKPHAISEGMLGKNLIAIRDACFGMSAIQMFNLDRANV
EEFYEVYKGVVSEYNDMVTELCSGPCVAIEIQQSNPTKTFREFCGPADPEIARHLRPETL
RAIFGKTKVQNAVHCTDLPEDGLLEVQYFFKILDN

Sequence of entity 5 (8), FASTA

>9V10_5 Cilia- and flagella-associated protein 107 (chains 8)
MAMLSTSVVPEAFSTPGWQIEKKYSTKVLLGNWVEERGKFTKAIDHTPQCIYRKEYVPMP
DHRPDFVSRWYSKSKMEGLPYKHLITHHQEPSHRYLISTYDDHYNRHNYNPGLPALRTWN
GQKLLWLPEKSDFPLVAPPTNYGLLEQLQQKWLASKTSLKESIYTTSYPRLPVCAMSRRE
HAIPVPHPRLQPIPRF

Sequence of entity 6 (A, N1), FASTA

>9V10_6 Cilia- and flagella-associated protein 141 (chains A, N1)
MSAEKMTKLEENLQRAVALKKTVDRWRNFHIHCMWQTTLDQRRNLFAALRMKDTKEQELA
LSNKQLLVVRQAALHELFEKEYQQYQQELNQMGKAFYEERL

Sequence of entity 7 (A0, A1, A2, A3, A4, A5), FASTA

>9V10_7 Tektin-1 (chains A0, A1, A2, A3, A4, A5)
MAKLLQSPPRFLPEEWYIANKSQYHRAEAQRSQSERLVAESQRLVEEIEKTTRKSQSDVN
KKLEQRLEEVRFWKKELDDKLEQLVNQTDDLLTYKTRLERSLESYKEPLHITEKCLEYRE
KRVGIDLVHDVVEQELQKEADIIHGVMNLLIRTLEESTEQIRLNRSAKYNLEKDLRDKFT
AITIDDVCFSLNNNSPNINFSEKVVRIEPNSVSLEDWLDFSNANVEKADKQLNNSTALKT
LVDQILSQTANDLRRQCEVVDEAFINGLKETKDARNKLADHLAKVMEEIASQEKNIMALE
NAITQQEGPAKVAHTRLETRTHRPNVELCRDIAQYRLIKEIQEINHNVARLKETLAQAQT
QLKALYRRQLALQEEIQVKENTIYIDQVLCMEMRKSIPPRDGDDHGAWEGGIRAEAIC

Sequence of entity 8 (AA, AC, AE, AG, AI, AK, AM, AO, BC, BE, BG, BI, BK, BM, BO, CC, CE, CG, CI, CK, CM, CO, DC, DE, DG, DI, DK, DM, DO, EA, EC, EE, EG, EI, EK, EM, FC, FE, FG, FI, FK, FM, GC, GE, GG, GI, GK, GM, GO, HC, HE, HG, HI, HK, HM, HO, IC, IE, IG, II, IK, IM, IO, JC, JE, JG, JI, JK, JM, JO, JQ, KA, KC, KE, KG, KI, KK, KM, KO, LA, LC, LE, LG, LI, LK, LM, LO, MA, MC, ME, MG, MI, MK, MM, MO, NA, NC, NE, NG, NI, NK, NM, NO, OC, OE, OG, OI, OK, OM, OO, PC, PE, PG, PI, PK, PM, PO, QC, QE, QG, QI, QK, QM, QO, RC, RE, RG, RI, RK, RM, RO, SA, SC, SE, SG, SI, SK, SM, TA, TC, TE, TG, TI, TK, TM, UA, UC, UE, UG, UI, UK, UM, VA, VC, VE, VG, VI, VK, VM, VO, WC, WE, WG, WI, WK, WM, WO), FASTA

>9V10_8 Tubulin alpha-3 chain (chains AA, AC, AE, AG, AI, AK, AM, AO, BC, BE, BG, BI, BK, BM, BO, CC, CE, CG, CI, CK, CM, CO, DC, DE, DG, DI, DK, DM, DO, EA, EC, EE, EG, EI, EK, EM, FC, FE, FG, FI, FK, FM, GC, GE, GG, GI, GK, GM, GO, HC, HE, HG, HI, HK, HM, HO, IC, IE, IG, II, IK, IM, IO, JC, JE, JG, JI, JK, JM, JO, JQ, KA, KC, KE, KG, KI, KK, KM, KO, LA, LC, LE, LG, LI, LK, LM, LO, MA, MC, ME, MG, MI, MK, MM, MO, NA, NC, NE, NG, NI, NK, NM, NO, OC, OE, OG, OI, OK, OM, OO, PC, PE, PG, PI, PK, PM, PO, QC, QE, QG, QI, QK, QM, QO, RC, RE, RG, RI, RK, RM, RO, SA, SC, SE, SG, SI, SK, SM, TA, TC, TE, TG, TI, TK, TM, UA, UC, UE, UG, UI, UK, UM, VA, VC, VE, VG, VI, VK, VM, VO, WC, WE, WG, WI, WK, WM, WO)
MRECISIHVGQAGVQIGNACWELYCLEHGIQPDGQMPSDKTIGGGDDSFNTFFSETGAGK
HVPRAVFVDLEPTVVDEVRTGTYRQLFHPEQLITGKEDAANNYARGHYTIGKEIVDLVLD
RIRKLADLCTGLQGFLIFHSFGGGTGSGFASLLMERLSVDYGKKSKLEFAIYPAPQVSTA
VVEPYNSILTTHTTLEHSDCAFMVDNEAIYDICRRNLDIERPTYTNLNRLIGQIVSSITA
SLRFDGALNVDLTEFQTNLVPYPRIHFPLATYAPVISAEKAYHEQLSVAEITNACFEPAN
QMVKCDPRHGKYMACCMLYRGDVVPKDVNAAIATIKTKRTIQFVDWCPTGFKVGINYQPP
TVVPGGDLAKVQRAVCMLSNTTAIAEAWARLDHKFDLMYAKRAFVHWYVGEGMEEGEFSE
AREDLAALEKDYEEVGVDSVEAEAEEGEEY

Sequence of entity 9 (AB, AD, AF, AH, AJ, AL, AN, AP, BB, BD, BF, BH, BJ, BL, BN, BP, CD, CF, CH, CJ, CL, CN, CP, DD, DF, DH, DJ, DL, DN, DP, EB, ED, EF, EH, EJ, EL, EN, FB, FD, FF, FH, FJ, FL, FN, GB, GD, GF, GH, GJ, GL, GN, HB, HD, HF, HH, HJ, HL, HN, IB, ID, IF, IH, IJ, IL, IN, IP, JD, JF, JH, JJ, JL, JN, JP, KB, KD, KF, KH, KJ, KL, KN, KP, LB, LD, LF, LH, LJ, LL, LN, LP, MB, MD, MF, MH, MJ, ML, MN, MP, NB, ND, NF, NH, NJ, NL, NN, NP, OB, OD, OF, OH, OJ, OL, ON, OP, PB, PD, PF, PH, PJ, PL, PN, PP, QD, QF, QH, QJ, QL, QN, QP, RD, RF, RH, RJ, RL, RN, RP, SB, SD, SF, SH, SJ, SL, SN, TB, TD, TF, TH, TJ, TL, TN, UB, UD, UF, UH, UJ, UL, UN, VB, VD, VF, VH, VJ, VL, VN, WB, WD, WF, WH, WJ, WL, WN), FASTA

>9V10_9 Tubulin beta-4B chain (chains AB, AD, AF, AH, AJ, AL, AN, AP, BB, BD, BF, BH, BJ, BL, BN, BP, CD, CF, CH, CJ, CL, CN, CP, DD, DF, DH, DJ, DL, DN, DP, EB, ED, EF, EH, EJ, EL, EN, FB, FD, FF, FH, FJ, FL, FN, GB, GD, GF, GH, GJ, GL, GN, HB, HD, HF, HH, HJ, HL, HN, IB, ID, IF, IH, IJ, IL, IN, IP, JD, JF, JH, JJ, JL, JN, JP, KB, KD, KF, KH, KJ, KL, KN, KP, LB, LD, LF, LH, LJ, LL, LN, LP, MB, MD, MF, MH, MJ, ML, MN, MP, NB, ND, NF, NH, NJ, NL, NN, NP, OB, OD, OF, OH, OJ, OL, ON, OP, PB, PD, PF, PH, PJ, PL, PN, PP, QD, QF, QH, QJ, QL, QN, QP, RD, RF, RH, RJ, RL, RN, RP, SB, SD, SF, SH, SJ, SL, SN, TB, TD, TF, TH, TJ, TL, TN, UB, UD, UF, UH, UJ, UL, UN, VB, VD, VF, VH, VJ, VL, VN, WB, WD, WF, WH, WJ, WL, WN)
MREIVHLQAGQCGNQIGAKFWEVISDEHGIDPTGTYHGDSDLQLERINVYYNEATGGKYV
PRAVLVDLEPGTMDSVRSGPFGQIFRPDNFVFGQSGAGNNWAKGHYTEGAELVDSVLDVV
RKEAESCDCLQGFQLTHSLGGGTGSGMGTLLISKIREEYPDRIMNTFSVVPSPKVSDTVV
EPYNATLSVHQLVENTDETYCIDNEALYDICFRTLKLTTPTYGDLNHLVSATMSGVTTCL
RFPGQLNADLRKLAVNMVPFPRLHFFMPGFAPLTSRGSQQYRALTVPELTQQMFDAKNMM
AACDPRHGRYLTVAAVFRGRMSMKEVDEQMLNVQNKNSSYFVEWIPNNVKTAVCDIPPRG
LKMSATFIGNSTAIQELFKRISEQFTAMFRRKAFLHWYTGEGMDEMEFTEAESNMNDLVS
EYQQYQDATAEEEGEFEEEAEEEVA

Sequence of entity 10 (Aa, Ab, Ac), FASTA

>9V10_10 Sperm axonemal maintenance protein CFAP97D1 (chains Aa, Ab, Ac)
MNNSLDYLAYPVIVSNHRQSTTFRKKLDFGHYILHKNRVQIVKPAVDTKPPMAHTHYILK
LSKIQGEQKRIDKIEYENRQLCQKIANAYRGPAKVDCWNEYLSKSLNRESRNRELVRITM
ENQGILRRLSDRKPNYDRRSSEMDWQNSRRYIRNTTRYLLFQED

Sequence of entity 11 (B, C), FASTA

>9V10_11 Meiosis-specific nuclear structural protein 1 (chains B, C)
MATKKRALSFSEKHQKLVDEKFRKSLNIQVMNKLERQAKNQVVQNENDEKVERQRFLRVL
QNEQFELDMEEAIQKAEANKMLRDRQLEQEERLANELARLKHESLKDKKMRQQVRENSIE
LRELEQKLKAAYMNKERAAQIVEKDAMKYEQMKRDAEIERIMMEEHDRLLKEESAKQERR
NKERAQYYLDLEKQLEDQERRKQEAYEQLLKEKLMIDEIVRKIYEEDQVERQQKLEKKNA
IQKYIEEFQRAQDFWRQKKREEMEEENRKIIEFANIQEQREGERMARVHEIEEKRVQRQN
LLMKQLEETLRQRDDLEQVRQELYQEEQAEIIKLKVKEEAELRLRRQREMKQDFEDQMAL
KELILQAAKEEEETFKKAMLAKFAEDDRIELMNAQKQRMKQLEHKRAVEKLIEERRSQFL
ADKQRELEELQLQQRRQGCINEIIEEERLRLLKEHAAKLLGYLPKGVFKREDDVDMLGEE
FRKAYQKRDGV

Sequence of entity 12 (B0, B1, B2, B3, B4, B5, R0, R1, R2, R3, R4, R5), FASTA

>9V10_12 Tektin-2 (chains B0, B1, B2, B3, B4, B5, R0, R1, R2, R3, R4, R5)
MATLSFKPSERYRLSDWRTNSYLLSTNAERQRDASHQIRQEARILRNETNNQIVWDEHDN
RTRLAERIDTVNRWKETLDKCLTDLDAEIDSLAQAKESAEQNLQAKNLPLDVAIECLTLR
ESRRDIDVVRDPVEEELLKEVEVIEATKKVLQEKISQAFQHLCLLQEIRQQLNSDHRDKM
ETLEIDRGCLSLNLTSPNISLKVNPTRIPKDSTTLQQWDEFTRFNKNRAEAEMKASIELR
EAIALAIAQTNNELDAQRVATEFTFRKRLREMESFYSELKWQEKNTLEEIAELQGDIRRL
EEDLRRKMMNLKLAHTRLESRTYRSNVELCRDQTQYGLIDEVHQLEATINTMKQKLAQTQ
NALDALFKHLARIQADIACKTNTLLLDTKCMDTRRKLTVPAEKFVPQVDTFTRTTNRTLS
PLKICQLELT

Ligands and cofactors

ID	Name	Formula	Copies
GTP	Guanosine-5'-triphosphate	C10 H16 N5 O14 P3	167
MG	Magnesium ion	Mg	170
GDP	Guanosine-5'-diphosphate	C10 H15 N5 O11 P2	170
ATP	Adenosine-5'-triphosphate	C10 H16 N5 O13 P3	3

Primary citation

Doublet microtubule-associated tektins and enzymes differentially regulate sperm flagellar integrity and motility. Liu, Q., Zhou, L., Liang, X. et al. Nat Commun (2026) 17. DOI 10.1038/s41467-026-69714-4 · PubMed

Other PDB entries of the same protein (UniProt Q9CQC3 (AlphaFold model), which also has an AlphaFold model), best resolution first:

8IYJ 3.5 Å, Cryo-EM structure of the 48-nm repeat doublet microtubule from mouse sperm
8I7R 6.5 Å, In situ structure of axonemal doublet microtubules in mouse sperm with 48-nm repeat
8TO0 7.7 Å, 48-nm repeating structure of doublets from mouse sperm flagella

Browse structure collections

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