Mokhoa oa ho sebelisana ha peptide-protein o tlameha ho etsa qeto pele ho boema-kepe bofe kapa bofe
Mofani oa Odara ea Peptide Geo Peptides Molao oa tsamaiso ea mosebetsi ke hore sethala se ka fetela pele feela seo mohato o latelang o ka se etsang. Ntho e 'ngoe le e' ngoe sehloohong sena ke molao oo o sebelisoang ka makhetlo a mane.
Licheke tsa handoff li ka pepesa bopaki bo sieo pele ho liteko, empa sengoloa sena ha se lekanye kabo ea mefokolo ea phutuho. Hlahloba likabelo tsa tatellano, litlhophiso tsa ho batla, hlahisa maikutlo, boitsebiso ba thepa le ditaolo tsa teko mmoho.
Potso ea sesebelisoa e tla ea bobeli, ’me ke potso e mabapi le tsebo ea pele ho e-na le ho nepahala. Ho ema ha peptide ho ile ha hlahlojoa ka lekhetlo la pele ho CAPRI ka mekhahlelo 28 le 29, mme tlhatlhobo e e neng ya latela e ne ya bolela gore mekgwa e e neng e le teng e ne e tlhoka melao e e botoka ya tlhopho, haholo moo sebaka se tlamang se sa tsejoe (li-peptide tsa CAPRI). Ke boemo bo tšepahalang ba tšimo: mekhoa e benchmarked, ho tsekoa, 'me ha ho pampiri e khothalletsang mokhoa oa kamehla bakeng sa nyeoe e fanoeng. Kahoo qeto eo u hlileng u e etsang pele u emisa ke hore na phutuho ea hau e hloka mekhoa efe ea letsoho.
Key Takeaway: Sethala se ka fetela pele feela seo mohato o latelang o ka se etsang.
Mohato 1: Hlalosa laeborari ka mefuta-futa ea sampole, eseng ka ho bala
Kenyeletso: potso ea baeloji, e boletsoeng e le papiso eo u batlang ho e etsa. Ketso: lokisa bolelele, masalla alfabeta, offset le ditaolo. Sephetho: rekoto ea moralo eo sehlopha sa synthesis se ka ahang ho eona ntle le ho u botsa letho. E entsoe neng tlaleho ea moralo e bolela hore na ke hobane'ng ha laebrari ena e araba potso ena le seo e sa se akaretsang ka boomo.
Tšireletso e felletseng ha e fumanehe, mme lipalo tsa tatellano ea sebaka-bakeng li rarolla khang kapele. Sebaka sa 7-mer se na le tatellano ea 1.28×10⁹, 10-mer 1.024×10¹³, le 15-mer 3.2768×10¹⁹, khahlano le siling e sebetsang ea laeborari e ka bang litho tse 10⁹ (lipalo tsa tatellano ea sebaka). Siling eo ke kopano ea tatellano ea boholo, eseng tekanyo e lekantsoeng, empa sephetho se na le molemo ofe kapa ofe o utloahalang: tse fetileng tse ka bang tse tšeletseng kapa tse supileng tse setseng u ntse u etsa sampole, eseng ho bala.
Mona ke moo mefuta-futa ea li-peptidomics e fumanang sebaka sa eona. U khetha phanele e tsamaisanang le mefuta e fapaneng ea lik'hemik'hale le ea sebopeho sa mohloli oa li-peptide ho fapana le peptide e le 'ngoe ka tšobotsi e fumanoeng., 'me u bua joalo tlalehong ea moralo. Molao-motheo oa moralo oa laebrari o boletsoeng litokomaneng tsa rona tsa litšebeletso o beha mokhoa oa ho hloleha ka ho hlaka: laeborari ea peptide e ka hloleha nako e telele pele e etsoa Li-geopeptides Cyclic Peptide Supplier e qala haeba moralo o sa tsamaisane le potso ea baeloji. Bolelele, koelana, mesaletsa ea alfabeta le phetoho ea phetoho palo eohle ea li-peptide tsa drive, ho rarahana ha synthesis le tlhahiso ea teko, ke ka lebaka leo moralo oa laeborari ea peptide o sa lokelang ho emisa khethong ea tatellano. Litaolo li teng tlalehong e le 'ngoe: setlamo se tsebahalang, phetolelo e qaqolohaneng, le peptide eo u e lebelletseng ho hloleha.
Mohato 2: Etsa tlhahlobo ea tlhahlobo 'me u fane ka tafole ea peptide e nang le boiphihlelo
Kenyeletso: li-file tsa LC-MS/MS tse tala le rekoto ea ho sebetsana le sampole. Ketso: batla ntle le ho hlaka ha enzyme, ka liphetoho tse atolositsoeng tse fapaneng le taolo ea FDR ea ho thetsa sepheo. Sephetho: tafole ea peptide e jereng tlhaho ea eona. E entsoe neng sehlopha sa boema-kepe se ka sefa, beha boemo bocha le ho sireletsa lenane ntle le ho bula faele e le 'ngoe e tala. Fektheri ea Peptide ea Cyclic
Beha le ho lekola taolo ea ho sibolla leshano bakeng sa phepelo ea 'nete ea peptidomics. Motsoako o khethehileng oa boithuto oa lifilthara tsa peptide le protheine e ke ke ea tiisa ka tlase ho 1% peptide FDR sebakeng se seng sa data, haholo-holo liphuputsong tse se nang enzyme kapa ka liphetoho tse atolositsoeng. Li-peptide tsa Parabolic
Setšoantšo sa tlaleho se se se ntse se le teng. Lethathamo la tlaleho la MIAIPE, e ntlafalitsoe tlasa HUPO bakeng sa immunopeptidomics, e hloka ho bolela hore na boitsebiso bo ne bo thehiloe ka tatellano kapa de novo, sesebelisoa sa lethathamo la tlhoro le liparamente tsa sona, litlhophiso tsa enjine ea ho batla, 'me sefa se seng le se seng se kentsoe (lethathamo la tlaleho la MIAIPE). Alima sebopeho sa eona esita le bakeng sa sampole e seng ea immunological. Ho bonolo ho lebala tšimo e 'ngoe hape: generic peptidomics analytical workflows e tsoa ho sampole ea pele ho kalafo ka ho ntšoa, karohano, MS tlhahlobo le boitsebahatso, 'me ho ntšoa ho tlameha ho potlaka ka ho lekaneng ho qoba ho senyeha ho tsoelang pele ha enzymatic. Li-peptide tse teng sampoleng ke tekanyo e nang le nalane ea ho sebetsana, kahoo e ngole.
Mohato 3: Etelletsa pele ka docking, le ho bala lintlha joalo ka maemo ho fapana le kamano
Kenyeletso: tafole ea peptide. Ketso: khetha protocol ka bolelele ba peptide, boemo ba receptor le hore na u na le tlhaiso-leseling ea sebaka sa marang-rang. Sephetho: tafole ea boemo bo holimo e nang le protocol le criterion e rekotiloeng. E entsoe neng mola o mong le o mong o bolela hore na ke protocol efe e e hlahisitseng le hore na ho sebelisitsoe mokhoa ofe oa katleho.
Lipalo tsa katleho tse hatisitsoeng ha li lumellane, 'me ho se lumellane ho ruta. Protocol ea HADDOCK ea peptide, ho qala ka sehlopha sa tlhabollo e meraro, fihlelletsoe 79.4% mekhoa e amohelehang ea receptor e tlanngoeng khahlanong le peptide e sa tlamisoang le 69.4% bakeng sa ho tlamolloa/ho sa tlanngoe (Protocol ea HADDOCK ea peptide). Litlaleho tsa benchmark tsa HPEPDOCK tsa mokhoa o sa boneng 33.3% top-10 katleho ka 57 linyeoe tse sa tlamisoang, ho phahama ho 72.6% ha sebaka se tlamang se fanoa (Letšoao la mokhoa o sa boneng oa HPEPDOCK). Tekanyo e ncha ea mekhoa ea ho emisa peptide e beha CABS-dock ho 53.0% tlamiloe le 37.0% e sa koaloang ho peptiDB, le AutoDock CrankPep ho 85.7% ho LEADS-PEP tlas'a sekhahla se thata sa RMSD ka mokhoa oa lehae (lets'oao le lecha la mekhoa ea ho emisa peptide). Liphetho tsa peptide tsa AlphaFold2 lia sebetsa 75% ka hare 1.5 Å ha moelelo o tlamang o tsejoa le 36% ka hare 2.5 Å ha ho se joalo (Liphetho tsa peptide ea AlphaFold2).
Linomoro tseo ha se tafole ea liki. Li fapane ka dataset, bolelele ba peptide le tekanyetso ya katleho, 'me ho hasana ho bonahatsa mekhoa e mengata joaloka mekhoa. Se fetisang ke tataiso ea litlamorao. Blind docking ke potso e thata ho feta docking e lebisitsoeng sebakeng sa marang-rang, ke ka lebaka leo HADDOCK e leng boema-kepe bo tsamaisoang ke tlhahisoleseling: Lithibelo tse sa hlakang tsa ho sebelisana ho tloha ho mutagenesis, MOF, NMR kapa paballo e kenyelletsa seo u seng u ntse u se tseba (HADDOCK ke boema-kepe bo tsamaisoang ke tlhahisoleseling). CABS-dock e matha e foufetse, ho nka peptide e le e tenyetsehang ka botlalo, 'me e khutlisetsa li-trajectories ho sehlopha ho fapana le boemo bo le bong (CABS-dock e matha e foufetse). Tlhahlobo ea AlphaFold 3 e tlaleha liprotheine le li-antibody interfaces mme e bolela hore e bolela esale pele mekhoa e tsitsitseng., eseng lihlopha (Tlhahlobo ea AlphaFold 3). Khetha protocol e lumellanang le tsebo ea pele eo u nang le eona, ebe u bala tlhahiso e le boemo.
Mohato 4: Ahlola setšoantšo ka lihlopha tsa boleng, ebe u etsa qeto ea hore na ke eng e lokeloang ke motsoako
DockQ e lekola mokhoa o boletsoeng esale pele khahlano le sebopeho sa litšupiso mme e na le thuso bakeng sa ho lekola benchmarking.. Ha e khone ho fana ka sehlopha sa boleng bo lekantsoeng bakeng sa "novel complex" eo tšupiso ea eona e sa tsejoeng. Bakeng sa khetho e lebelletsoeng, sebelisa bopaki ba kholiseho e lekantsoeng, mefuta-futa, ho khoneha le moralo o boletsoeng esale pele oa netefatso ea liteko. Mokhoa oa DockQ.
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Tlhaloso ke moo lihlopha tsa computational le liteko li atisang ho lahleheloa ke tse ling. Bolela mofuta oa tatellano hantle, phetoho le sebaka sa eona, le foromo ea counterion, hobane phetoho ho e 'ngoe ea tsona e fetola seo u se lekang. Kopa setifikeiti sa tlhahlobo se nang le bohloeki ba analytical-HPLC, mass-spectrometry identity le net peptide content, 'me u kenye tlhahlobo ea endotoxin kapa tlhahlobo ea counter-ion moo tlhahlobo e e hlokang. Mofani ea kang Liphetoho tsa MOL e ka tsamaisa sephutheloana seo haufi le peptide, e leng lebaka le utloahalang la ho rarolla litlhoko tsa data pele ho taelo ho e-na le ka mor'a eona.
Mohato 5: Netefatsa ka liteko, ho tsamaisana le tlhahlobo le potso e botsitsoeng
Kenyeletso: li-peptide tse kopaneng le data ea tsona ea lotho. Ketso: etsa tlhahlobo eo 'malo oa eona o arabang potso e itseng. Sephetho: sephetho se tlamang kapa se sa tlameng se nang le maemo a sona a tekanyo. E entsoe neng sephetho se ka bapisoa le ponelopele ea docking ho latela maemo ao mahlakore ka bobeli a a amohelang.
Bapisa tlhahlobo le tseko. Sebaka sa boema-kepe se bolela esale pele sebaka se tlamang le geometry e ka bang teng; tlhahlobo ea tlholisano kapa letoto la mutagenesis le leka sebaka, ha tekanyo e tlamang e tobileng e leka kamano. Ha li fetohe, mme sephetho se se nang thuso ho tsoa tekong e fosahetseng ha se u bolelle letho ka boemo. Sebaka sa polokelo ea litaba tsa SKEMPI se bontša hore na hobaneng mokhoa o tlameha ho tsamaea le nomoro: likenyo tsa eona li tlaleha mokhoa oa ho metha le mocheso, 'me holim'a plasmon resonance le fluorescence spectroscopy li laola lingoliloeng (SKEMPI affinity database). "Kd" efe kapa efe eo u e bapisang khahlanong le eona e rua leeme la mekhoa eo e 'meli, kahoo tlaleha maemo a hau 'me u bapise joalo ka joalo.
Setlamo se tiisitsoeng se tšehetsa khopolo-taba e tlamang, empa ha e fane ka bopaki bo boletsoeng esale pele kapa ho netefatsa protocol eohle ea ho emisa. Liphetho tse sa tlameng le tse tlamang tse fokolang ka bobeli li na le tsebo ha li lekoa, boleng ba thepa le maemo li utloisisoa.
Lintlha tse tloaelehileng tsa ho hlōleha le mokhoa oa ho li tšoara ka letsoho
Mohlala ka mor'a tafole ke hore ho hloleha ho hong le ho hong ho theko e tlase ho ts'oara ho ea holimo le ho theko e boima tlase. Tafole ea peptide ntle le litlhophiso tsa eona tsa FDR e ke ke ea sefshoa hape, kahoo sehlopha sa boema-kepe sea e tšepa kapa sea e haha bocha. Lethathamo la maemo ntle le protocol ea lona le ke ke la hlalosoa, kahoo ponahalo e ntle le ponahalo ea lehlohonolo li shebahala li tšoana. Tlhaloso e haellang foromo ea counterion e hlahisa peptide e ka 'nang ea itšoara ka tsela e fapaneng le ea mohlala.
Qetello
Molao oo o boetse o u bolella mokhoa oa ho laola letšolo kapa ho ahlola molekane ea fanang ka lona. Botsa hore na ke sethala sefe se hlahisang artefact, hore na protocol ea docking e khethiloe ho lumellana le tsebo ea pele e teng, le hore na kopo ea ho kopanya e na le litekanyetso tsa eona tsa ho amoheloa. Molekane ea ka arabang lipotso tseo tse tharo o na le kemiso ea mosebetsi. Molekane ea etellang pele ka lintlha o na le maemo.
Moo litokomane li fellang teng, etsa qeto ka ntho e entsoeng ka matsoho. Haeba tafole ea peptide e fihla ntle le liparamente tsa ho batla, ba botse pele u emisa. Haeba tafole ea poso e fihla ntle le criterion ea eona, botsa hore na ke efe e sebelisitsoeng. Haeba tlhaloso e fihla ntle le mofuta oa tatellano, botsa hore na u kōptjoa hore u hlahlobe molek'hule ofe. Lipotso tseo ha li lefelle letho 'me li rarolla likhang tse ngata.
Liphetoho tsa MOL li tšehetsa mosebetsi ona libakeng tseo ho tsona ho hlahisoang lintho tsa khale: moralo oa laeborari ea peptide ka bolelele bo hlalositsoeng, offset, Phetoho le monahano oa taolo, le tlhophiso ea moetlo e nang le setifikeiti sa tlhahlobo se koahelang bohloeki ba HPLC, Boitsebiso ba MS le peptide content. Haeba u batla letšolo, re romelle sepheo sa hau, bolelele ba peptide le moralo oa tlhahlobo, 'me re tla hlahloba ho khoneha le uena.
Phatlalatso ea mohatisi: MOL Changes e fana ka litšebeletso tsa peptide mme e na le thahasello ea khoebo sehloohong sena. Mekhahlelo ea litšebeletso le lipolelo tsa bokhoni ke likopo tsa bafani ba thepa; ho fumaneha le ts'ebetso bakeng sa moaho o itseng o hloka bopaki bo ikhethileng ba projeke.
