Deuterated Peptides: Inda Daidaitaccen Lakabin Taimakawa

Isotope ba canjin kayan kwalliya bane

Deuterium ya bambanta da sinadarai daga hydrogen a yanayin daidaitawa: haɗin carbon-deuterium zai iya canza yadda miyagun ƙwayoyi ke aiki ta hanyoyin da ƙungiyar taro ɗaya ba zata ba da shawarar ba.

Deuterium yana zaune ƙasa a cikin kuzarin girgiza-sifiri fiye da hydrogen lokacin da aka haɗa shi da carbon, ta wajen 1.2 ku 1.5 kcal da mole. Wannan bambance-bambance kadan ne a cikakkiyar ma'ana kuma mai yanke hukunci a cikin motsin motsi. Matsakaicin adadin tsagewar biyu shine tasirin isotope na kinetic na deuterium, ya da DKI, bayyana kamar kₕ da k D ya raba.

Peptide Synthesis Don abubuwan da ba enzymatic ba, deuterium KIE yawanci yana faɗuwa tsakanin 2 kuma 9 - raba haɗin carbon-deuterium yana gudana 2 ku 9 sau a hankali fiye da daidaitaccen carbon-hydrogen cleavage. The 2023 bita na deuterium a cikin binciken magani da aka buga a PMC ya tsara abubuwan da ke cikin kuzari a fili, kuma an yi amfani da wannan ka'ida a duk ilimin sunadarai na magani tsawon shekaru ashirin.

Wannan kewayon shine inda yanke shawarar ƙirar farko ke rayuwa. DKIE a tsakiyar waccan taga na iya canza bayanin martabar harhada magunguna. DKIE a kasan shi, ko waje bond-cleavage iko gaba ɗaya, canza komai ba.

Gargadi: DKIE yana taimakawa kawai lokacin da ke warware takamaiman haɗin carbon-hydrogen yana iyakance ƙimar. Inda ake sarrafa metabolism ta hanyar wani mataki daban - ɗaure, sufuri, ko ilmin sinadarai wanda bai ƙunshi wannan haɗin kai ba - deuteration na iya motsa ƙimar da aka auna da ƴan kashi kaɗan kawai. A cikin binciken sifa ɗaya, auna tasirin isotope sun kasance ƙanana kamar 4 ku 6% a duk faɗin abubuwan da aka gwada (ACS Chemical Neuroscience). Wannan bai isa ya canza fallasa ba.

Lokacin da deuterated analogs suna samun matsayinsu a cikin ganowa

Akwai dalilai daban-daban guda uku ƙungiyar ganowa ta zaɓi analog ɗin peptide deuterated, kuma suna buƙatar dabaru na ƙira daban-daban.

A matsayin dabarar kwanciyar hankali na rayuwa. A classic aikace-aikace: peptide yana sharewa da sauri saboda peptidase ko hanyar oxidative yana kai hari ga takamaiman matsayi. Ajiye deuterium a wurin da aka kai harin yana rage matakin kuma yana faɗaɗa haske. Aikace-aikacen Deuterium a cikin Chemistry na Magunguna a cikin Jarida na Magungunan Magunguna frames the value proposition precisely — precision deuteration is most useful when the parent compound suffers from metabolism-mediated toxicity, hulɗar miyagun ƙwayoyi, ko matsala bioactivation, maimakon daga gibin kwanciyar hankali.

A matsayin binciken injiniya. Lokacin da deuteration yayi shiru na rayuwa a wani rukunin da aka bayar, Filin da aka yi wa lakabi ya zama mai gano magunguna na pharmacokinetic. Lokacin da aka sanya shi da gangan a wuri mai laushi na rayuwa, ya zama binciken da ke ba da rahoto kan hanyar da ta mamaye. The Babin Kimiyya kai tsaye kan deuterium a cikin ganowa da haɓaka magunguna ya zana wannan bambanci kai tsaye: musanya guda ɗaya na iya zama shiru ko aikin injina dangane da hanyar metabolism da matsayin alamar.

A matsayin bincike ko bincike. An yi iƙirarin deuterated peptides kuma an yi amfani da su musamman don bincike, nazari, da kuma pharmacokinetic/pharmacodynamic dalilai - yanayin amfani da ya bambanta da gyara na warkewa, kamar yadda aka bayyana a cikin da deuterated peptides patent wallafe-wallafe.

Mahimman tsari yana da mahimmanci a nan. Binciken Biochemistry na deutetrabenazine, maganin deuterated da FDA ta amince, kafa Peptides na roba cewa maye gurbin isotopic dabara ce masu kula da su za su yi la'akari da cancantar ta maimakon ƙin yarda da shi sosai. Wannan baya sanya kowane deuterated analog ya yarda, amma yana kawar da tunanin cewa tsarin yana da ban mamaki.

Lokacin da aka yiwa lakabin peptides suna samun matsayinsu a cikin nazarin halittu

Babban amfani na biyu na alamar isotope ba shi da alaƙa da kwanciyar hankali. Yana da game da aunawa.

Tsayayyen isotope mai ma'aunin peptide yana aiki azaman ma'auni na ciki don cikakken ƙididdige sunadaran sunadarai da peptides ta LC-MS. Domin ma'aunin da aka yiwa lakabin yana kusa da sinadari da mai nazari, yana haɗuwa, ionizes kamar haka, kuma yana gyara asarar samfurin, ionization canji, da tsangwama matrix a cikin gyara guda ɗaya. A barga-isotope dilution LC-MS aikin da aka buga a PMC ya bayyana wannan a matsayin mafi girman samuwa takamaiman takamaiman ƙididdigewa, kuma ya zama daidaitaccen aiki a cikin ganowa da tabbatar da bayyanar cututtuka da alamun cututtukan cututtuka.

Ƙimar mai amfani yana da sauƙi don bayyanawa kuma mai sauƙi a rasa: daidaitaccen ciki yana gyara duk abin da ke faruwa tsakanin spiking samfurin da gano siginar. Tushen kayan aiki, dawo da hakar, bambancin ƙarar allura, da danne daga abubuwan matrix duk sun sami daidaitawa da wani fili wanda ya sami tafiya iri ɗaya.

13C/15N da 2H yanke shawara

Anan shine inda rabi biyu na wannan batu suka bambanta, kuma inda mafi yawan shiriya ta tsaya gajarce.

Don ƙididdige adadin peptide LC-MS, 13Alamun C da 15N gabaɗaya sun zarce deuterium a matsayin ma'auni na ciki. Suna haɗa kai tare da ɗan asalin ƙasar kuma suna daidaita halayen ionization cikin aminci. Ƙididdigar ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙa'idodi na iya nuna ɗan canjin lokacin riƙewa, saboda maye gurbin carbon-deuterium yana rikitar da halayen chromatographic na kwayoyin fiye da carbon-13 ko nitrogen-15 maye gurbin.. Wannan motsi yana raunana gyaran, saboda mizanin da ke warware ko da wani sashi daga mai nazarinsa baya fuskantar yanayi iri ɗaya. Clinical LC-MS/MS jagora da aka buga a PMC yana ɗaukar ƙaƙƙarfan ƙa'idodin cikin gida mai alamar isotope azaman tsoho saboda wannan dalili.

Shawarar aiki: tsoho zuwa 13C da 15N don ƙididdige ƙididdiga inda abubuwan rabuwar chromatographic. Ajiye ƙayyadaddun ƙa'idodin ciki don lokuta inda samun damar roba, farashi, ko wani takamaiman aikin ƙayyadaddun ƙayyadaddun aikin yana fifita su - kuma tabbatar da haɗin gwiwa yayin haɓaka hanyar maimakon ɗauka.

Nawa ne rabuwar taro ya isa

Ma'auni mai lakabi yana da amfani kawai idan yawansa bai mamaye ambulaf ɗin isotope na halitta na mai nazari ba.. Carbon, nitrogen, oxygen, da sulfur duk suna ba da gudummawar isotopes masu nauyi da ke faruwa a zahiri, don haka ko da peptide mara lakabi yana gabatar da gungu na kololuwa maimakon guda ɗaya.

The shawarwarin bincike na tushen peptide da aka buga a cikin PMC magance wannan kai tsaye: babban bambanci tsakanin ma'auni mai lakabi da peptide mara lakabi dole ne ya zama babba don kiyaye daidaitattun ambulan na halitta., ko ƙididdigewa ya zama kuskure. Jagoran fasaha na masana'antu daga Otsuka da CIL's bargancin ƙa'idodin isotope yana sanya mafi ƙarancin jimlar yawan motsi a kusan 3 Da.

A aikace, Hanyoyin peptide sau da yawa suna aiki tare da ƙarin ɗakin kwana. A taro diyya a kusa 10 An kwatanta peptides na asali da masu lakabin sa hannu a ciki aikin barga na isotope na kyauta wanda aka buga a cikin PMC, kuma faffadan diyya sun zama ruwan dare inda ambulan na halitta yake da faɗi ko peptide ya yi ƙanƙanta wanda ya mamaye ambulaf ɗin haɗari ne na gaske..

SIL peptide da cinikin furotin na SIL

Ma'aunin peptide mai lakabi yana shiga aikin aiki a matakin narkewa. Ma'aunin furotin da aka lakafta yana shiga kafin narkewa. Wannan bambance-bambancen lokaci ya ƙayyade abin da kowanne zai iya gyara.

Tsayayyen furotin da aka yiwa lakabin isotope don bambance-bambancen narkewa da asarar shirye-shiryen samfurin saboda yana samun cikakken tsari.. Tsayayyen peptide mai alamar isotope baya - ana zuga shi bayan an gama narkewa.. Bayanin aikace-aikacen Thermo Fisher akan samar da tsayayyen sunadarai masu alamar isotope ya sanya yanayin siffan furotin akan daidai wannan tushen. Kasuwancin ciniki yana da amfani: sunadaran sunadaran suna da wahalar samarwa, mafi tsada, kuma ƙasa da dacewa fiye da na roba mai lakabin peptide, don haka ƙungiyoyi sukan karɓi ma'aunin peptide kuma suna sarrafa bambancin narkewa daban.

Inda isotope ya kasance akan peptide

Sanya shi ne inda ƙirar peptide da aka lalata ta yi nasara ko ta gaza, kuma lamari ne na shaida maimakon hankali.

Mafarin farawa shine haɓakar metabolite - kwanciyar hankali na plasma, hanta microsome kwanciyar hankali, da kuma peptidase-resistance assays - don gano ko wane matsayi ne a zahiri ake kai hari. Lakabi matsayi wanda ba shine babban abin alhaki ba yana siyan komai.

Don peptides na musamman, yankuna uku suna ɗaukar mafi yawan ƙimar:

1. Matsayin Alpha-carbon kusa da ssissile peptide bonds. Deuteration a nan yana jinkirta tsagewar kashin baya kai tsaye.

2. N- da C-terminal yankuna. Exopeptidases suna kai hari ga iyakar da farko, yin matsayi na ƙarshe maƙasudai masu daraja.

3. Ƙungiyoyin methyl sarkar gefe akan leucine, isoleucine, da valine. Wadannan ragowar sune makasudin gama gari don metabolism na oxidative, kuma rukunin su na methyl shine inda wannan sinadari ke faruwa.

Dabarun haraji. Takamaiman deuteration na rukunin yanar gizo yana yiwa ɗaya ko ƙaramin adadin mukamai kuma yana ɗaukar mafi ƙanƙanta rikitattun roba. Cikakken lakabin deuteration a fili, ƙara ƙarfin kwanciyar hankali a mafi girman rikitarwa. Hanyoyi masu haɗaka suna zama tsakanin su biyun. Ƙaddamarwar ciniki a nan ta biyo baya Binciken fasaha na Adesis na peptides deuterated, wanda yana ɗaya daga cikin ƴan maganin da ake samarwa a bainar jama'a don bayyana sarƙaƙƙiya-farashin fa'ida cinikin ciniki a sarari maimakon gabatar da deuteration a matsayin mai fa'ida iri ɗaya..

Zana ciniki-offs masu daraja a fayyace a sarari

Kowane cinikin da ke ƙasa yana da haɗe direban farashi. Babu ɗayansu da ke da 'yanci.

Matsalolin roba da girman fa'ida. Gabatar da deuterium a ƙayyadadden matsayi yana nufin yin aiki tare da ƙayyadaddun tubalan ginin a wancan ragowar, ko tare da ilmin sinadarai wanda ya sanya alamar zaɓaɓɓu. Ko wace hanya tana ƙara farashi dangane da jerin marasa lakabi. Ƙimar ƙaƙƙarfan tsari ko ƙaƙƙarfan tsarin lakabi yana ninka wanda farashi a kan matsayi.

Nauyin tsarkakewa. Shirye-shiryen peptide mai lakabi ya ƙunshi nau'in hanyar da ba a lakafta ba: wani sashi mai lakabin abu, abin ɗauka mara lakabi, kuma - ya danganta da sinadarai - ɓarna ko ɓarna nau'ikan da suka bambanta da maƙasudin ta hanyar ƙaramin ƙara.. Rarrabe nau'ikan da suka bambanta ta raka'a ɗaya ko biyu shine babban al'amarin chromatography, kuma shi ne ainihin direba na aikin shiri.

Haɗarin ɓarna mai karɓa. Yawancin lokaci ana kwatanta ƙasƙanci a matsayin shiru, kuma wannan bayanin ba daidai ba ne a duniya. Canjin hydrogen/deuterium na iya canza kuzarin haɗin gwiwar hydrogen da canza kuzarin ɗauri ta kashi goma na kilocalories da mole a wasu tsarin., kamar yadda aka tattauna a nazarin maye gurbin isotopic akan ƙarfin hydrogen-bond. Don binciken injiniyoyi, abin da ke da muhimmanci. Canji a ɗaure wanda ke canza abin karantawa yana lalata fassarar gwajin.

Metabolic shunting. Rage raguwa a wurin farko na iya karkatar da metabolism zuwa wata hanya dabam. Lokaci-lokaci wannan shine manufar. Yawancin lokaci yana da rikitarwa - gabaɗayan bayyanar ba zai inganta ba, kuma sabon bayanin martaba na iya gabatar da tambayoyin da shirin bai samu a baya ba.

Nauyin nazari. Mai lakabin peptide yana buƙatar ƙarin gwajin fitarwa fiye da wanda ba a lakabi ba, saboda haɓakar isotopic da ɗaukar hoto mara lakabi ƙarin sigogin ƙayyadaddun bayanai ne. Wannan sama-sama na nazari shine ƙungiyoyin direbobin da ba sa ƙima.

Yadda lakabi ke kasa

Jagorar ƙira wanda kawai ke bayyana nasara shine takaddar tallace-tallace. Waɗannan su ne yanayin gazawar da suka cancanci ƙira da su.

DKIE yayi ƙanƙanta sosai. An rufe sama, kuma darajar maimaitawa azaman ma'aunin nunawa: idan carbon-hydrogen cleavage a matsayin dan takarar ba shi da iyaka, deuteration ba zai canza sakamakon. Auna kafin yin yaƙin neman zaɓe.

Lakabi hasara ta hanyar musanya. Ana iya musanya Deuterium a yayin matakan canja wurin hydrogen, don haka alamar ba zata kasance a inda aka sanya ta ba. Wannan 2020 ACS Chemical Neuroscience Nazarin Haɓaka Har ila yau yana rubuta asarar lakabin da za a iya sake haifarwa a cikin sakamakon samfuran rayuwa. Ƙirar da ta yi watsi da musayar musayar zai iya samar da fili wanda ya yi kama da takardar shaidar kuma yana nuna bambanci a cikin binciken.

Ƙunƙarar haske daga rashin cikakkiyar rabuwa. Wannan ita ce gazawar shiru a cikin aikin ƙididdigewa. Idan peptide mara lakabi ya kasance a cikin madaidaicin shiri mai lakabi, yana haifar da sigina a cikin tashar haske wanda ke nuna son zuciya kai tsaye. The 2022 nazarin gurɓataccen haske a cikin barga mai isotope mai alamar peptides na ciki yana ba da shawarar tabbatar da tsari cikin tsari cewa matrix mara kyau wanda aka kaɗa tare da ma'aunin nauyi ba ya haifar da siginar manufa mai haske. Sauran peptide mara lakabi dole ne ya zama siga mai sarrafawa mai sarrafawa, ba wani tunani ba.

Isotope scrambling. Gas-phase hydrogen da deuterium na iya sake rarrabawa a cikin peptide yayin ionization ko rarrabuwar tushen karo., wanda ke share bayanan matsayi. Tare da rarrabuwar kawuna, ɓangarorin ions suna ba da rahoto kawai matsakaicin matakin deuteration. The 2021 bita na ci gaba a cikin hydrogen/deuterium musayar mass spectrometry ya bayyana tsarin, kuma binciken JACS na baya na fashewa-lokacin gas a cikin ions peptide yana nuna tasirin ya dogara da jerin, mai caji, da tsarin gas-lokaci. Ionization mai hankali da rarrabuwar tushen lantarki kamar ETD ko ECD suna kiyaye lakabin mafi kyau - binciken daya ya ruwaito yana tashe a kasa. 10% karkashin m ETD yanayi. Sakamakon zane shine kai tsaye: kar a dogara ga rarrabuwar kawuna kawai don tabbatar da inda deuterium ke zaune.

Tsafta: lambobi biyu, ba daya ba

Kuskuren da aka fi sani da ƙayyadaddun peptide mai lakabin shine ɗaukar tsarki azaman ƙima ɗaya. Yana da sigogi biyu masu zaman kansu, kuma haɗa su yana haifar da haɗari na gaske.

Tsaftar sinadarai ya bayyana nawa daga cikin kayan shine peptide manufa, an auna ta hanyar nazarin RP-HPLC. Bai ce komai ba game da inda deuterium ke zaune.

Isotopic wadata ya bayyana abin da juzu'in da aka lakafta a zahiri ke ɗauke da deuterium. peptide na iya zama tsarkakakken sinadarai kuma har yanzu yana ɗauke da lakabin da bai cika ba ko kuma iri-iri. Bayanin kasuwanci don tsayayye mai lakabin peptides na isotope yawanci suna bayyana tsaftar sinadarai a 98% ko mafi girma sai dai in an kayyade, tare da alamar amino acid tubalan ginin a 99% wadata ko sama da haka, kamar yadda aka nuna a ciki da Eurisotop barga isotope-labeled peptide reagent ƙayyadaddun bayanai.

Girma na uku ya cancanci kulawa daidai a cikin hadaddun jeri: diastereomeric rashin tsarki. Gabatar da ragowar abubuwan da ba na halitta ba ko masu lakabi na iya haifar da ƙazanta na stereochemical wanda daidaitaccen ma'aunin tsafta ba zai warware ba.. The 2025 nazarin shari'ar kula da ƙazantar diastereomeric don hadadden masana'antar peptide a cikin Binciken Tsarin Halitta & Ci gaba yana nuna nazarin amino acid na chiral, An yi shi bayan deuterated-hydrochloric-acid hydrolysis, a matsayin hanyar sarrafawa mai amfani. Don alamar analog da aka ƙaddara don tsarin tsari, wannan yana cikin ƙayyadaddun ƙayyadaddun bayanai daga farko maimakon ƙarawa bayan rashin tsarki ya bayyana.

Tarin tabbatarwa

Babu hanyar nazari ɗaya da ke tabbatar da alamar peptide. Kowannensu yana amsa takamaiman tambaya kuma ya bar wasu ba a amsa su ba, wanda shine dalilin da ya sa hanyoyin orthogonal sune ma'auni.

Ƙididdigar haɗawa. Hanyoyi biyu sun mamaye. Proton NMR yana ƙididdige ƙididdigewa ta hanyar kwatanta hadedde siginar a wuraren da aka lakafta da siginar da ba sa yin musanyar hydrogen., kamar yadda aka bayyana a cikin da 2025 Binciken musayar hydrogen-deuterium da aka buga a PMC. Yana ba da shaidar matsayi kai tsaye lokacin da kololuwar ta warware, amma peptide spectra taron cikin sauri da faɗaɗa layi tare da aikin da bai cika ba yana iyakance yawan isa ga manyan ƙwayoyin cuta..

Mass spectrometry yana aiki daga ambulaf ɗin isotope maimakon. Kowane haɗin deuterium yana ƙara kusan 1.006 Da, and the observed envelope is a convolution of deuterated species with the peptide’s natural heavy isotopes. Centroid na wannan ambulaf yana ba da matsakaicin haɗawa - ma'auni mai ƙarfi, kuma ba mai warwarewa ta yanar gizo ba, kamar yadda aka bayyana a ciki jagora mai amfani akan nazarin bayanan musanyawar iskar hydrogen. A isasshen ikon warwarewa, Tsarin tsari mai kyau na isotope yana raba rarrabuwar isotopomers daga nau'ikan halittu masu yawa kuma yana ba da ƙarin karantawa kai tsaye., wanda aikin kan warware tsarin lafiya na isotopic da aka buga a PMC ya nuna.

Yadda daidaitaccen ma'aunin wadatarwa zai kasance? Kwatanta rarraba isotope da aka lura akan rarraba da aka annabta a matakin wadatar da aka bayar an ba da rahoton daidai, tare da ma'aunin wadatar da ke fadowa cikin kusan 1.5% na ƙimar da ake tsammani, per Babban aikin ma'aunin haɓaka isotope wanda aka buga a cikin Chemistry na Analytical. Wannan lambar tana da amfani azaman anka na ma'auni: idan ma'aunin wadatar ku ta yi nisa da kyau fiye da wannan gefe daga ƙimar da aka annabta, martanin lakabin ko matakin rabuwa yana buƙatar bincike.

Rarraba alamar da ba ta cika ba daga wadatar halitta. Rarraba isotope na dabi'a an daidaita shi don abin da aka ba da shi na asali. Duk wani motsin ambulaf wanda ya wuce wannan tushen yana nuna ainihin haɗin gwiwar deuterium. A ƙanana zuwa matsakaicin ƙima, ambulaf ɗin da aka auna cakude ne na gudummawar biyu, don haka deconvolution ko centroid gyara wajibi ne - ba tare da shi ba, Ana ƙidaya yawan abubuwan halitta a matsayin haɗaɗɗen deuterium. Hannun ƙididdiga da aka buga sun bayyana ƙayyadaddun yankewar taro don kula da bambance-bambance a matsayin gaske. The 2025 jagora akan zabar ma'auni na ciki masu lakabi masu tsayayyen isotopically yana sanya wannan a cikin mafi fa'idar tambaya game da daidaitattun zaɓin da kuma cancantar bambancin yawan jama'a.

Don Tukwici: Ba da rahoton tsabtar sinadarai da haɓakar isotopic azaman sigogi daban-daban na saki tare da ma'aunin karɓa daban. Haɗaɗɗen adadi guda ɗaya mai tsabta ba shi da ma'anar ma'ana ga mai lakabin peptide, kuma masu bita za su nemi rabuwa.

Abin da ake buƙata daga haɗin haɗin gwiwa

Abubuwan buƙatun da ke ƙasa sune fitarwa mai amfani na duk abin da ke sama. Suna aiki ko da wane abokin tarayya shirin ya zaɓa.

Wurin isotope na tushen shaida. Abokin tarayya ya kamata ya iya tattauna dalilin da ya sa aka zaɓi wani matsayi, aiki daga metabolite ko bayanan kwanciyar hankali maimakon tsarin tsoho. Idan shawarar ta kasance "deuterate a fili,” tambayi abin da madadin zai kashe da abin da zai samu.

Ƙididdigar ƙididdiga ta musamman. Ba cikakken bayanin iyawa ba. HPLC chromatogram na musamman, ainihin tabbacin taro, kuma auna wadatar isotopic akan rarraba da aka annabta.

Shaida na matsayi inda aka ayyana ƙirar alamar. Bayanan Proton NMR don ƙayyadaddun bayanai, tsarin sawa mai warwarewa, isar da takardar shaidar maimakon a kan buƙata. Samuwar Peptide

Sarrafa sauran nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan da ba su da lakabi. Ƙayyadaddun iyaka don ɗauka mara lakabi, saboda wannan lambar kai tsaye tana ƙayyade ko kayan ana amfani dashi azaman ma'auni.

Ƙimar ƙwanƙwasa inda aka haɗa kimiyar musanya. Amsa da aka rubuta ga tambayar ko alamar ta kasance a inda aka sanya ta.

Haihuwa da kulawa da suka dace da karatun ƙasa. Ga kowane mai lakabin peptide wanda ke zuwa cikin tushen tantanin halitta ko a cikin vivo binciken, Gwajin haifuwa da ƙarancin kulawar endotoxin wani ɓangare ne na ƙayyadaddun bayanai, ba ƙari ba.

Batch ganowa. Saboda ƙimar peptide mai lakabin ya dogara ne akan sake haifuwa tsakanin kuri'a, rikodin ganowa shine buƙatun fasaha maimakon takarda.

Don shirye-shiryen da ke buƙatar waɗannan duka a wuri guda, Canje-canje na MOL yana ba da haɗin peptide na al'ada tare da gyare-gyare da sabis na lakabi ciki har da peptides mai lakabin isotope., tare da peptide ingancin kula da tsari ganowa an gina shi akan tsarin tantancewa da yawa da tsarin kula da ingancin cikin gida wanda ya dace da ISO 9001:2015. Kamfanin gwajin peptide da halayen nazari aikin yana rufe tsaftar HPLC da bayyanar datti, mass spectrometric molecular weight and series verification, da kuma nazarin amino acid don aikin abun ciki. Don masu lakabin peptides waɗanda aka ƙaddara don aikin tushen tantanin halitta, ana yin kira da sarrafawa a wurin aiki a Class 100 bakararre peptide masana'antu yanayi tare da keɓaɓɓen kira, lyophilization, da marufi yankunan da m-lokaci kira iya aiki ga peptides har zuwa 60 saura.

Key Takeaway: Ƙayyade tsabtar sinadarai, isotopic wadata, tabbatar da matsayi, da abin ɗauka mara lakabi azaman sigogi daban-daban na saki guda huɗu. Abokin haɗin gwiwa wanda zai iya samar da adadi mai tsafta kawai bai tabbatar da kayan aikin bincikenku ya dogara da shi ba.

Tambayoyin da ake yawan yi

Yaushe zan yi amfani da peptide deuterated maimakon 13C ko 15N mai lakabi? Yi amfani da deuterium lokacin da makasudin shine don jinkirin takamaiman matakin rayuwa ta hanyar amfani da tasirin isotope na motsa jiki. Yi amfani da 13C ko 15N lokacin da makasudin shine ma'aunin ƙididdigewa - waɗancan alamun suna yin haɗin gwiwa sosai tare da ƙididdigar ɗan ƙasa kuma daidai tasirin matrix da aminci kamar ka'idodin ciki na LC-MS.

Ta yaya zan san deuteration zai inganta kwanciyar hankali kafin in yi kira? Tabbatar cewa rabuwar carbon-hydrogen a matsayin ɗan takara yana iyakance ƙimar hanyar da kuke niyya.. Inda wannan ɓarkewar ke da iyaka, deuteration yana rage matakin. Inda ake sarrafa metabolism ta hanyar ɗaure, sufuri, ko ilimin kimiyyar da ba na haɗin kai ba, tsammanin ƙaramin sakamako - auna tasirin isotopes a matsayin ƙasa 4 ku 6% an ruwaito a cikin irin waɗannan tsarin.

Shin tsarkin sinadarai ya gaya mani alamar ta cika? A'a. Tsaftar sinadarai da wadatar isotopic sigogi ne masu zaman kansu. Peptide zai iya zama 98% mai tsabta ta HPLC kuma har yanzu yana ɗauke da rashin cikawa ko haɗawar deuterium iri-iri, wanda shine dalilin da ya sa duka dabi'u suna cikin takaddun shaida.

Yaya girman ya kamata bambancin taro ya kasance tsakanin ma'aunin peptide mai lakabi da nazartar sa? Jimlar yawan motsi na aƙalla 3 Da shine mafi ƙarancin abin da aka ambata don kiyaye daidaitattun ambulan isotope na halitta. Hannun Peptide sau da yawa sun fi son ƙarin ɗaki - a kusa 10 Da ya zama ruwan dare a aikace - saboda ɗimbin envelopes na halitta suna faɗaɗa akan manyan peptides masu ɗauke da sulfur..

Zan iya amfani da rarrabuwar kawuna don tabbatar da inda deuterium ke zaune? Ba abin dogaro ba. Rarraba tushen karo yana sake rarraba hydrogen da deuterium a cikin lokacin iskar gas, don haka guntuwar ions suna ba da rahoton matsakaicin matakin deuteration maimakon bayanin matsayi. Yi amfani da ionization mai laushi tare da rarrabuwar tushen lantarki kamar ETD ko ECD, kuma tabbatar da lakabin matsayi ta proton NMR don ƙayyadaddun alamu.

Me yasa ƙayyadaddun ƙa'idodin ciki na ke canza lokacin riƙewarsa? Canjin Carbon-deuterium yana lalata halayen chromatographic fiye da carbon-13 ko nitrogen-15 maye gurbin.. Juyawa yawanci karami ne amma yana iya isa ya raunana matrix-tasirin gyara, wanda shine daya daga cikin dalilan 13C da 15N ana fifita tambarin ma'auni inda rabuwa ke da mahimmanci..

Matakai na gaba

Idan shirin ku yana auna analog mai alamar isotope ko ma'aunin ciki mai lakabi, Hanya mafi sauri zuwa yanke shawara mai karewa ita ce sanya takamaiman tambaya a gaban ƙungiyar ƙira da ƙididdiga kafin aiwatar da hanya.. Ƙimar iyawar fasaha ta ɗan gajeren lokaci zai gaya muku ko matsayin da aka yi niyya ya cancanci yin lakabi, menene farashin hanyar roba, da kuma waɗanne bayanan tabbatarwa za ku buƙaci a saki - wanda yawanci ya fi arha fiye da gano amsar bayan yaƙin neman zaɓe.

Raba jerin manufa, alhakin da kuke ƙoƙarin magancewa, da bayanin da ake buƙata, da MOL Canje-canje za su tantance zaɓuɓɓukan jeri na isotopic, yiwuwar hadawa, da fakitin nazari da ake buƙata don tabbatar da kayan.