Гантінгтін
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HTT (англ. Huntingtin) – білок, який кодується однойменним геном, розташованим у людей на короткому плечі 4-ї хромосоми. Довжина поліпептидного ланцюга білка становить 3 142 амінокислот, а молекулярна маса — 347 603. Мутація в цьому гені спричиняє хворобу Гантінгтона.
Послідовність амінокислот
| 10 | 20 | 30 | 40 | 50 | ||||
|---|---|---|---|---|---|---|---|---|
| MATLEKLMKA | FESLKSFQQQ | QQQQQQQQQQ | QQQQQQQQPP | PPPPPPPPPQ | ||||
| LPQPPPQAQP | LLPQPQPPPP | PPPPPPGPAV | AEEPLHRPKK | ELSATKKDRV | ||||
| NHCLTICENI | VAQSVRNSPE | FQKLLGIAME | LFLLCSDDAE | SDVRMVADEC | ||||
| LNKVIKALMD | SNLPRLQLEL | YKEIKKNGAP | RSLRAALWRF | AELAHLVRPQ | ||||
| KCRPYLVNLL | PCLTRTSKRP | EESVQETLAA | AVPKIMASFG | NFANDNEIKV | ||||
| LLKAFIANLK | SSSPTIRRTA | AGSAVSICQH | SRRTQYFYSW | LLNVLLGLLV | ||||
| PVEDEHSTLL | ILGVLLTLRY | LVPLLQQQVK | DTSLKGSFGV | TRKEMEVSPS | ||||
| AEQLVQVYEL | TLHHTQHQDH | NVVTGALELL | QQLFRTPPPE | LLQTLTAVGG | ||||
| IGQLTAAKEE | SGGRSRSGSI | VELIAGGGSS | CSPVLSRKQK | GKVLLGEEEA | ||||
| LEDDSESRSD | VSSSALTASV | KDEISGELAA | SSGVSTPGSA | GHDIITEQPR | ||||
| SQHTLQADSV | DLASCDLTSS | ATDGDEEDIL | SHSSSQVSAV | PSDPAMDLND | ||||
| GTQASSPISD | SSQTTTEGPD | SAVTPSDSSE | IVLDGTDNQY | LGLQIGQPQD | ||||
| EDEEATGILP | DEASEAFRNS | SMALQQAHLL | KNMSHCRQPS | DSSVDKFVLR | ||||
| DEATEPGDQE | NKPCRIKGDI | GQSTDDDSAP | LVHCVRLLSA | SFLLTGGKNV | ||||
| LVPDRDVRVS | VKALALSCVG | AAVALHPESF | FSKLYKVPLD | TTEYPEEQYV | ||||
| SDILNYIDHG | DPQVRGATAI | LCGTLICSIL | SRSRFHVGDW | MGTIRTLTGN | ||||
| TFSLADCIPL | LRKTLKDESS | VTCKLACTAV | RNCVMSLCSS | SYSELGLQLI | ||||
| IDVLTLRNSS | YWLVRTELLE | TLAEIDFRLV | SFLEAKAENL | HRGAHHYTGL | ||||
| LKLQERVLNN | VVIHLLGDED | PRVRHVAAAS | LIRLVPKLFY | KCDQGQADPV | ||||
| VAVARDQSSV | YLKLLMHETQ | PPSHFSVSTI | TRIYRGYNLL | PSITDVTMEN | ||||
| NLSRVIAAVS | HELITSTTRA | LTFGCCEALC | LLSTAFPVCI | WSLGWHCGVP | ||||
| PLSASDESRK | SCTVGMATMI | LTLLSSAWFP | LDLSAHQDAL | ILAGNLLAAS | ||||
| APKSLRSSWA | SEEEANPAAT | KQEEVWPALG | DRALVPMVEQ | LFSHLLKVIN | ||||
| ICAHVLDDVA | PGPAIKAALP | SLTNPPSLSP | IRRKGKEKEP | GEQASVPLSP | ||||
| KKGSEASAAS | RQSDTSGPVT | TSKSSSLGSF | YHLPSYLKLH | DVLKATHANY | ||||
| KVTLDLQNST | EKFGGFLRSA | LDVLSQILEL | ATLQDIGKCV | EEILGYLKSC | ||||
| FSREPMMATV | CVQQLLKTLF | GTNLASQFDG | LSSNPSKSQG | RAQRLGSSSV | ||||
| RPGLYHYCFM | APYTHFTQAL | ADASLRNMVQ | AEQENDTSGW | FDVLQKVSTQ | ||||
| LKTNLTSVTK | NRADKNAIHN | HIRLFEPLVI | KALKQYTTTT | CVQLQKQVLD | ||||
| LLAQLVQLRV | NYCLLDSDQV | FIGFVLKQFE | YIEVGQFRES | EAIIPNIFFF | ||||
| LVLLSYERYH | SKQIIGIPKI | IQLCDGIMAS | GRKAVTHAIP | ALQPIVHDLF | ||||
| VLRGTNKADA | GKELETQKEV | VVSMLLRLIQ | YHQVLEMFIL | VLQQCHKENE | ||||
| DKWKRLSRQI | ADIILPMLAK | QQMHIDSHEA | LGVLNTLFEI | LAPSSLRPVD | ||||
| MLLRSMFVTP | NTMASVSTVQ | LWISGILAIL | RVLISQSTED | IVLSRIQELS | ||||
| FSPYLISCTV | INRLRDGDST | STLEEHSEGK | QIKNLPEETF | SRFLLQLVGI | ||||
| LLEDIVTKQL | KVEMSEQQHT | FYCQELGTLL | MCLIHIFKSG | MFRRITAAAT | ||||
| RLFRSDGCGG | SFYTLDSLNL | RARSMITTHP | ALVLLWCQIL | LLVNHTDYRW | ||||
| WAEVQQTPKR | HSLSSTKLLS | PQMSGEEEDS | DLAAKLGMCN | REIVRRGALI | ||||
| LFCDYVCQNL | HDSEHLTWLI | VNHIQDLISL | SHEPPVQDFI | SAVHRNSAAS | ||||
| GLFIQAIQSR | CENLSTPTML | KKTLQCLEGI | HLSQSGAVLT | LYVDRLLCTP | ||||
| FRVLARMVDI | LACRRVEMLL | AANLQSSMAQ | LPMEELNRIQ | EYLQSSGLAQ | ||||
| RHQRLYSLLD | RFRLSTMQDS | LSPSPPVSSH | PLDGDGHVSL | ETVSPDKDWY | ||||
| VHLVKSQCWT | RSDSALLEGA | ELVNRIPAED | MNAFMMNSEF | NLSLLAPCLS | ||||
| LGMSEISGGQ | KSALFEAARE | VTLARVSGTV | QQLPAVHHVF | QPELPAEPAA | ||||
| YWSKLNDLFG | DAALYQSLPT | LARALAQYLV | VVSKLPSHLH | LPPEKEKDIV | ||||
| KFVVATLEAL | SWHLIHEQIP | LSLDLQAGLD | CCCLALQLPG | LWSVVSSTEF | ||||
| VTHACSLIYC | VHFILEAVAV | QPGEQLLSPE | RRTNTPKAIS | EEEEEVDPNT | ||||
| QNPKYITAAC | EMVAEMVESL | QSVLALGHKR | NSGVPAFLTP | LLRNIIISLA | ||||
| RLPLVNSYTR | VPPLVWKLGW | SPKPGGDFGT | AFPEIPVEFL | QEKEVFKEFI | ||||
| YRINTLGWTS | RTQFEETWAT | LLGVLVTQPL | VMEQEESPPE | EDTERTQINV | ||||
| LAVQAITSLV | LSAMTVPVAG | NPAVSCLEQQ | PRNKPLKALD | TRFGRKLSII | ||||
| RGIVEQEIQA | MVSKRENIAT | HHLYQAWDPV | PSLSPATTGA | LISHEKLLLQ | ||||
| INPERELGSM | SYKLGQVSIH | SVWLGNSITP | LREEEWDEEE | EEEADAPAPS | ||||
| SPPTSPVNSR | KHRAGVDIHS | CSQFLLELYS | RWILPSSSAR | RTPAILISEV | ||||
| VRSLLVVSDL | FTERNQFELM | YVTLTELRRV | HPSEDEILAQ | YLVPATCKAA | ||||
| AVLGMDKAVA | EPVSRLLEST | LRSSHLPSRV | GALHGVLYVL | ECDLLDDTAK | ||||
| QLIPVISDYL | LSNLKGIAHC | VNIHSQQHVL | VMCATAFYLI | ENYPLDVGPE | ||||
| FSASIIQMCG | VMLSGSEEST | PSIIYHCALR | GLERLLLSEQ | LSRLDAESLV | ||||
| KLSVDRVNVH | SPHRAMAALG | LMLTCMYTGK | EKVSPGRTSD | PNPAAPDSES | ||||
| VIVAMERVSV | LFDRIRKGFP | CEARVVARIL | PQFLDDFFPP | QDIMNKVIGE | ||||
| FLSNQQPYPQ | FMATVVYKVF | QTLHSTGQSS | MVRDWVMLSL | SNFTQRAPVA | ||||
| MATWSLSCFF | VSASTSPWVA | AILPHVISRM | GKLEQVDVNL | FCLVATDFYR | ||||
| HQIEEELDRR | AFQSVLEVVA | APGSPYHRLL | TCLRNVHKVT | TC |
Кодований геном білок за функцією належить до фосфопротеїнів. Задіяний у таких біологічних процесах як апоптоз, поліморфізм, ацетиляція. Локалізований у цитоплазмі, ядрі.
Література
- Xia J., Lee D.H., Taylor J., Vandelft M., Truant R. (2003). Huntingtin contains a highly conserved nuclear export signal.. Hum. Mol. Genet. 12: 1393 — 1403. PubMed DOI:10.1093/hmg/ddg156
- Sayer J.A., Manczak M., Akileswaran L., Reddy P.H., Coghlan V.M. (2005). Interaction of the nuclear matrix protein NAKAP with HypA and huntingtin: implications for nuclear toxicity in Huntington's disease pathogenesis.. NeuroMolecular Med. 7: 297 — 310. PubMed DOI:10.1385/NMM:7:4:297
- Anne S.L., Saudou F., Humbert S. (2007). Phosphorylation of huntingtin by cyclin-dependent kinase 5 is induced by DNA damage and regulates wild-type and mutant huntingtin toxicity in neurons.. J. Neurosci. 27: 7318 — 7328. PubMed DOI:10.1523/JNEUROSCI.1831-07.2007
- Shao J., Welch W.J., Diprospero N.A., Diamond M.I. (2008). Phosphorylation of profilin by ROCK1 regulates polyglutamine aggregation.. Mol. Cell. Biol. 28: 5196 — 5208. PubMed DOI:10.1128/MCB.00079-08
- Lemonidis K., Sanchez-Perez M.C., Chamberlain L.H. (2015). Identification of a novel sequence motif recognized by the ankyrin repeat domain of zDHHC17/13 S-acyltransferases.. J. Biol. Chem. 290: 21939 — 21950. PubMed DOI:10.1074/jbc.M115.657668
- Kim M.W., Chelliah Y., Kim S.W., Otwinowski Z., Bezprozvanny I. (2009). Secondary structure of Huntingtin amino-terminal region.. Structure 17: 1205 — 1212. PubMed DOI:10.1016/j.str.2009.08.002