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Karboangidrazi abo karbonatdegidratazi simejstvo fermentiv yaki katalizuyut vzayemoperetvorennya mizh vuglekislim gazom i vodoyu i disocijovani ioni vugilna kislota tobto bikarbonat i ioni vodnyu 1 aktivnij centr bilshosti karboangidraz mistit ion cinku Tomu yih klasifikuyut yak metalofermenti Ferment pidtrimuye kislotno luzhnij balans i dopomagaye transportuvati vuglekislij gaz 2 KarboangidraziKarboangidraza lyudini II zi zv yazanim cinkom i vuglekislim gazom PDB 6LUXIdentifikatoriKod KF 4 2 1 1Nomer CAS 9001 03 0Bazi fermentivIntEnz IntEnz viewBRENDA BRENDA entryExPASy NiceZyme viewMetaCyc metabolic pathwayKEGG KEGG entryPRIAM profilePDB structures RCSB PDB PDBe PDBj PDBsumGene Ontology AmiGO EGOPoshukPMC stattiPubMed stattiNCBI NCBI proteinsCAS 9001 03 0Karboangidraza dopomagaye pidtrimuvati Kislotno osnovnij balans regulyuvati rN i balans ridini Zalezhno vid jogo roztashuvannya rol fermentu desho zminyuyetsya Napriklad karboangidraza viroblyaye kislotu v slizovij obolonci shlunka U nirkah kontrol ioniv bikarbonatu vplivaye na vmist vodi v klitini Kontrol ioniv bikarbonatu takozh vplivaye na vmist vodi v ochah Ingibitori karboangidrazi vikoristovuyutsya dlya likuvannya glaukomi nadmirnogo skupchennya vodi v ochah Blokuvannya cogo fermentu zminyuye balans ridini v ochah zmenshuyuchi nakopichennya ridini tim samim znizhuyuchi tisk 2 3 Karboangidraza maye virishalne znachennya dlya funkcionuvannya gemoglobinu zavdyaki efektu Bora yakij katalizuye gidrataciyu vuglekislogo gazu z utvorennyam vugilnoyi kisloti ta shvidkoyi disociaciyi u vodu 4 Po suti zbilshennya vuglekislogo gazu prizvodit do znizhennya pH krovi sho znizhuye zv yazuvannya kisnyu z gemoglobinom 5 Spravedlivo navpaki yaksho znizhennya koncentraciyi vuglekislogo gazu pidvishuye pH krovi sho pidvishuye shvidkist zv yazuvannya kisnyu z gemoglobinom Pov yazati efekt Bora z karboangidrazoyu prosto karboangidraza priskoryuye reakciyu vuglekislogo gazu sho reaguye z vodoyu utvoryuyuchi ioni vodnyu protoni ta ioni bikarbonatu Dlya opisu rivnovagi v reakciyi karboangidrazi vikoristovuyetsya princip Le Shatelye Tkanini bilsh kisli nizh legeni tomu sho vuglekislij gaz utvoryuyetsya klitinnim dihannyam i reaguye z vodoyu v tkaninah utvoryuyuchi protoni vodnyu Oskilki koncentraciya vuglekislogo gazu visha rivnovaga zsuvayetsya vpravo v storonu bikarbonatu Protilezhne sposterigayetsya v legenyah de vivilnyayetsya vuglekislij gaz tomu jogo koncentraciya nizhcha tomu rivnovaga zmishuyetsya livoruch u bik vuglekislogo gazu namagayuchis pidvishiti jogo koncentraciyu 6 Zmist 1 Poyava i funkciyi 1 1 Regulyaciya pH 2 Kvalifikaciya 2 1 Struktura 3 Reakciya 3 1 Transport CO2 4 Mehanizm 5 Rodini 5 1 a CA 5 2 b CA 5 3 g CA 5 4 d CA 5 5 z CA 5 6 h CA 5 7 i CA 6 Budova i funkciyi 7 Kadmij vmisna karboangidraza 7 1 Podibnist do inshih karboangidraz 7 2 Vidminnosti vid inshih karboangidraz 7 3 Transportuvannya kadmiyu 7 4 CDCA podibni bilki 8 Ulovlyuvannya ta sekvestraciya vuglecyu 9 Divis takozh 10 Spisok literaturi 11 Podalshe chitannyaPoyava i funkciyi red Karboangidrazu vpershe bulo viyavleno v eritrocitah koriv u 1933 roci i odnochasno bulo vidkrito Rougtonom 7 v Kembridzhi ta Meldrami 7 u Filadelfiyi yaki shukali katalitichnij faktor 7 Regulyaciya pH red Karboangidraza vidigraye vazhlivu rol u regulyuvanni rN krovi sho priskoryuye CO2 H2O displaystyle ce lt gt nbsp HCO3 H reakciya dlya zabezpechennya shvidkoyi pidtrimki rivnovagi Na rivnovazhnu reakciyu vplivaye spivvidnoshennya bikarbonatu ta H do vuglekislogo gazu 8 HCO3 ce spoluchena osnova yaka nejtralizuye kisloti a H ce spoluchena kislota yaka nejtralizuye osnovi za Kislotno osnovnij gomeostaz HCO3 i H idealno pidhodyat dlya buferizaciyi pH u krovi ta tkaninah oskilki pKa blizkij do fiziologichnogo pH 7 2 7 6 Oskilki HCO3 i H regulyuyutsya v nirkah a vuglekislij gaz plazmi regulyuyetsya v legenyah obidvi diyi v nirkah i legenyah vazhlivi dlya pidtrimki stabilnosti rN krovi Takim chinom karboangidraza spriyaye sekreciyi H u prosvit nirkovih kanalciv i reabsorbciyi HCO3 u nirkah Krim togo ce spriyaye transportu vuglekislogo gazu z legenevoyi tkanini do alveol legenevogo kapilyara de vuglekislij gaz bude vivoditisya pid chas vidihu 8 Karboangidraza ce duzhe davnij ferment yakij zustrichayetsya v oboh domenah prokariot i isnuye v shesti riznih klasah sered bilshosti zhivih organizmiv 9 Ci simejstva ne shozhi za poslidovnistyu chi strukturoyu oskilki voni evolyucionuvali nezalezhno odne vid odnogo ale vsi rozvinuli odnakovu strukturu aktivnogo centru Zn2 pokazuyuchi chudovij priklad konvergentnoyi evolyuciyi Kvalifikaciya red Ferment ce rechovina yaka diye yak katalizator u zhivih organizmah yakij dopomagaye priskoriti himichni reakciyi 10 Karboangidraza ye vazhlivim fermentom yakij mistitsya v eritrocitah slizovij obolonci shlunka klitinah pidshlunkovoyi zalozi ta navit nirkovih kanalcyah Vin buv vidkritij u 1932 roci ta rozdilenij na tri osnovni klasi 11 Pershij klas alfa vuglekislota angidraza yaka zustrichayetsya u ssavciv drugij klas beta karboangidraza yaka mistitsya v bakteriyah i roslinah i nareshti tretij klas gamma karboangidraza yaka mistitsya v metanogennih bakteriyah u garyachih dzherelah 12 Usi tri klasi karboangidrazi mayut odnakovij aktivnij centr iz metalevim centrom Zn odnak strukturno voni ne shozhi odin na odnogo Osnovna rol karboangidrazi v organizmi lyudini polyagaye v katalizaciyi peretvorennya vuglekislogo gazu na vugilnu kislotu i nazad Odnak vin takozh mozhe spriyati transportu CO2 u krovi sho u svoyu chergu spriyaye dihannyu Vin navit mozhe brati uchast u utvorenni solyanoyi kisloti v shlunku Potribna citata Tomu rol karboangidrazi zalezhit vid togo de vona znahoditsya v organizmi Struktura red U CA II ssavciv aktivnij centr skladayetsya z nastupnogo zhorstkogo atoma metalu kisloti Lyuyisa Zn 2 koordinovanogo iz zalishkami His 94 96 i 119 na vidstani 109 odin vid odnogo ta gidroksidnij ion pKa 6 8 120 u Td konfiguraciyi gidrofobna kishenya poruch iz zv yazanim cinkom gidroksidom sho skladayetsya z Val 143 u svoyij osnovi ta Val 121 Trp 209 i Leu 198 na jogo shiyi zalishok protonnogo peremishennya PSR His 64 H peremishuye H do aktivnogo centru ta z nogo za dopomogoyu konformacijnogo peremikannya ta merezhi vodnevih zv yazkiv skladayetsya z gidroksilnoyi grupi Thr 199 i karboksilnoyi grupi Glu 106 yaka stabilizuye zv yazanij z cinkom gidroksid polegshuyuchi oriyentaciyu molekul vodi v aktivnij storoni do pevnoyi geometrichnoyi konfiguraciyi CA II maye chastotu obertannya 106 s 1 sho v 107 raziv shvidshe nizh nekatalizovana reakciya Reakciya red Div takozh vugilna kislota nbsp Shema mehanizmu ciklichnoyi reakciyi sho katalizuyetsya karboangidrazoyu II 13 Reakciya yaka demonstruye katalizaciyu karboangidrazi v nashih tkaninah taka CO2 H2O H2CO3 H HCO3 Katalizaciya karboangidrazi v legenyah proyavlyayetsya H HCO3 H2CO3 CO2 H2OPrichinoyu togo sho reakciyi v tkaninah i legenyah ye protilezhnimi ye riznij riven rN yakij mistitsya v nih Bez katalizatora karboangidrazi reakciya jde duzhe povilno ale z katalizatorom reakciya vidbuvayetsya v 107 raziv shvidshe Reakciya sho katalizuyetsya karboangidrazoyu HCO3 H CO2 H2OVugilna kislota maye pKa priblizno 6 36 tochne znachennya zalezhit vid seredovisha tomu pri pH 7 nevelikij vidsotok bikarbonatu protonuyetsya Karboangidraza ye odnim iz najshvidshih fermentiv i yiyi shvidkist zazvichaj obmezhuyetsya shvidkistyu difuziyi yiyi substrativ Tipova katalitichna shvidkist riznih form cogo fermentu kolivayetsya vid 104 do 106 reakcij na sekundu 13 Nekatalizovana zvorotna reakciya ye vidnosno povilnoyu kinetika v 15 sekundnomu diapazoni Os chomu gazovanij napij ne degazuyetsya mittyevo pri vidkritti yemnosti odnak vin shvidko degazuyetsya v roti koli vstupaye v kontakt z karboangidrazoyu yaka mistitsya v slini 14 Angidrazu viznachayut yak ferment yakij katalizuye vidalennya molekuli vodi iz spoluki i tomu same cya zvorotna reakciya daye nazvu karboangidrazi oskilki vona vidalyaye molekulu vodi z vugilnoyi kisloti U legenyah karboangidraza peretvoryuye bikarbonat na vuglekislij gaz pridatnij dlya vidihu Transport CO2 red nbsp Aktivnij centr fermentu CAII kod PDB 1CA2 yakij O chervonij N sinij Zn sirij i C zelenijVuglekislij gaz transportuyetsya krov yu v troh formah Rozchinenij u viglyadi gazu v plazmi 7 10 Zv yazuyetsya z gemoglobinom u viglyadi karbaminogemoglobinu v eritrocitah 20 Prisutnij u viglyadi ioniv bikarbonatu v plazmi i transportuyetsya u viglyadi bikarbonatu 70 15 Mehanizm red nbsp Zbilshene zobrazhennya aktivnogo centru karboangidrazi II lyudini sho pokazuye tri zalishki gistidinu ta gidroksidnu grupu yaka koordinuye punktirni liniyi ion cinku v centri Vid PDB 1CA2 nbsp Ferment CAII kod PDB 1CA2 sho pokazuye vtorinni strukturi ta gidrofobnu kishenyu prava storona Zn2 utvorenu beta listom sinij i dvoma bichnimi lancyugami valinu ta odnim triptofanomCink prostetichna grupa u fermenti koordinuyetsya v troh polozhennyah gistidinom bichnimi lancyugami Chetvertu koordinacijnu poziciyu zajmaye voda Chetvertij gistidin blizkij do vodnogo ligandu spriyayuchi utvorennyu centru Zn OH yakij zv yazuye CO2 z utvorennyam bikarbonatu cinku 16 Konstrukciya ye prikladom zagalnoyi kisloti zagalnoyi osnovi kataliz div stattyu Kislotnij kataliz Aktivnij centr takozh maye kishenyu pridatnu dlya vuglekislogo gazu nablizhayuchi jogo do grupi gidroksidu Provedeni kinetichni doslidzhennya viznachayut nastupnij mehanizm dlya fermentu na etapi 1 i 2 nukleofil O na gidroksid ioni koordinovanomu do Zn2 zdijsnyuye nukleofilnu ataku na chastkovo elektrofilnij vuglec na molekuli CO2 Tut Zn2 diye yak kislota Lyuyisa yaka znizhuye pKa koordinovanogo ligandu OH2 z 7 8 do 6 8 yak Td sho prizvodit do deprotonuvannya vodi do gidroksid iona a vilnij proton nejtralizuyetsya navkolishnim buferom Na kroci 3 vidbuvayetsya perenesennya protona H vid OH 1 do nekoordinovanogo O u CO3 2 koordinovanij do atoma Zn 2 v aktivnomu centri Potim vivilnyayetsya ion bikarbonatu i katalitichnij centr regeneruyetsya shlyahom zv yazuvannya inshoyi molekuli vodi v obmin na ion bikarbonatu Na etapi 4 skoordinovanij vodnij ligand deprotonuyetsya za dopomogoyu Zn 2 shob utvoriti inshij gidroksid ion dlya pochatku ciklu znovu 17 18 Rodini red nbsp Strichkova diagrama karboangidrazi II lyudini Aktivnij centr ion cinku vidno v centri VidPDB 1CA2 Viznano shonajmenshe p yat riznih simejstv CA a b g d i z Ci rodini ne mayut znachnoyi poslidovnosti aminokislot podibnosti i v bilshosti vipadkiv vvazhayutsya prikladom konvergentnoyi evolyuciyi a KA zustrichayutsya v organizmi lyudini a CA red Hrebetni vodorosti i deyaki bakteriyi mayut ce simejstvo KA Fermenti CA znajdeni v ssavci podilyayutsya na chotiri veliki pidgrupi dzherelo yaki u svoyu chergu skladayutsya z kilkoh izoform citozolnij CA CAI CA II CA III CA VII ta CA XIII mitohondriyi CA CA VA ta CA VB sekretovani CA CA VI membranno asocijovani CA CA IV CA IX CA XII CA XIV i CA XV Isnuye tri dodatkovi akatalitichni izoformi karboangidrazi lyudini CA VIII CA X and CA XI chiyi funkciyi zalishayutsya nezrozumilimi 19 nbsp Na comu zobrazhenni pokazano ligandi ta kishenkovij tip karboangidrazi 20 Porivnyannya karboangidraz ssavciv Izoforma Gen Molekulyarna masa 21 kDa Misceznahodzhennya Specifichna aktivnist fermentiv lyudini a 22 s 1 Chutlivist do sulfanilamidi b KI nM 22 Klitina Tkanina 21 CA I CA1 29 Citozol eritrocitiv i shlunkovo kishkovogo traktu 2 0 105 250CA II CA2 29 Citozol majzhe povsyudno 1 4 106 12CA III CA3 29 Citozol 8 rozchinnogo bilka v m yazah I tipu 1 3 104 240000CA IV CA4 35 pozaklitinnij GPI zcheplenij ShKT nirki endotelij 1 1 106 74CA VA CA5A 34 7 prognozovano Mitohondriya pechinka 2 9 105 63CA VB CA5B 36 4 prognozovano Mitohondriya shiroko poshirenij 9 5 105 54CA VI CA6 39 42 Sekretorna slina i moloko 3 4 105 11CA VII CA7 29 Citozol shiroko poshirenij 9 5 105 2 5CA IX CA9 54 58 Klitinna membrana asocijovana normalnij shlunkovo kishkovij trakt kilka vidiv raku 3 8 105 16CA XII CA12 44 pozaklitinnij aktivnij centr nirki deyaki vidi raku 4 2 105 5 7CA XIII 23 CA13 29 Citozol shiroko poshirenij 1 5 105 16CA XIV CA14 54 pozaklitinnij aktivnij centr nirki serce skeletni m yazi mozok 3 1 105 41CA XV 24 CA15 34 36 pozaklitinnij GPI zcheplenij nirki ne virazheni v tkaninah lyudini 4 7 105 72 Za vinyatkom mishi CA XV Acetazolamid u cij tablici b CA red Bilshist prokariotichnih i roslinnih hloroplastnih KA nalezhat do b simejstva Bulo identifikovano dva shablon pidpisu dlya ciyeyi rodini C SA D S R LIVM x AP EQ YF A LIVM x 2 LIVM x 4 LIVMF 3 x G H x 2 C Gg CA red g klas CA pohodit vid metanogeniv bakterij sho viroblyayut metan yaki rostut u garyachih dzherelah d CA red d klas CA buv opisanij u diatomovi Rozriznennya cogo klasu CA z yavilosya nedavno 25 odnak piddayutsya sumnivu z CA red z klas CA zustrichayetsya viklyuchno v bakteriyah u kilkoh hemolitotrofah i morskih cianobakteriyah yaki mistyat cso karboksisomi 26 Ostanni trivimirni analizi 25 pripuskayut sho z CA maye pevnu strukturnu podibnist do b CA osoblivo poblizu miscya ioniv metalu Takim chinom dvi formi mozhut buti viddaleno sporidnenimi navit yaksho bazova aminokislotna poslidovnist z tih pir znachno rozijshlasya h CA red Neshodavno v organizmah rodu Plasmodium bulo znajdeno simejstvo h Ce grupa fermentiv yaki ranishe vvazhalisya nalezhnimi do a simejstva KA odnak bulo prodemonstrovano sho h KA mayut unikalni osoblivosti taki yak struktura koordinaciyi ioniv metaliv 27 i CA red Klas jota ye ostannim opisanim klasom CA Vin buv viyavlenij u morskih diatomovih vodorostyah Thalassiosira pseudonana i shiroko poshirenij sered morskogo fitoplanktonu 28 U diatomovih vodorostyah i CA neobhidnij dlya mehanizmiv koncentraciyi CO2 i na vidminu vid inshih klasiv CA vin mozhe vikoristovuvati marganec zamist cinku yak kofaktor metalu 28 Gomologi i CA takozh buli pidtverdzheni v gramnegativnih bakteriyah de mozhut buti prisutni yak bilkovij gomodimer 29 Budova i funkciyi red U prirodi isnuye kilka form karboangidrazi U najkrashe vivchenij formi a karboangidrazi prisutnij u tvarin ion cinku koordinuyetsya imidazolovimi kilcyami 3 zalishkiv gistidinu His94 His96 i His119 30 Osnovnoyu funkciyeyu fermentu u tvarin ye vzayemoperetvorennya vuglekislogo gazu ta bikarbonatu dlya pidtrimki kislotno luzhnogo balansu v krovi ta inshih tkaninah a takozh dlya transportuvannya vuglekislogo gazu z tkanin U ssavciv isnuye shonajmenshe 14 riznih izoform Roslini mistyat inshu formu zvanu b karboangidrazoyu yaka z evolyucijnoyi tochki zoru ye okremim fermentom ale bere uchast u tij samij reakciyi ta takozh vikoristovuye ion cinku u svoyemu aktivnomu centri U roslin karboangidraza spriyaye pidvishennyu koncentraciyi SO2 v hloroplastah shob zbilshiti shvidkist karboksiluvannya fermentu RuBisCO Ce reakciya yaka integruye CO2 v organichni cukri vuglecyu pid chas fotosintezu i mozhe vikoristovuvati lishe formu CO2 vuglecyu a ne vugilnu kislotu chi bikarbonat dzherelo Kadmij vmisna karboangidraza red Bulo viyavleno sho morski diatomovi vodorosti ekspresuyut novu formu z karboangidrazi Bulo viyavleno sho T weissflogii vid fitoplanktonu poshirenij u bagatoh morskih ekosistemah mistit karboangidrazu z ionom kadmiyu zamist cinku 31 Ranishe vvazhalosya sho kadmij ye toksichnim metalom yakij ne vikonuye zhodnih biologichnih funkcij Odnak cej vid fitoplanktonu shozhe pristosuvavsya do nizkogo rivnya cinku v okeani vikoristovuyuchi kadmij koli cinku ne vistachaye 32 Hocha koncentraciya kadmiyu v morskij vodi takozh nizka priblizno 1x10 16 mol isnuye ekologichna perevaga mozhlivosti vikoristannya bud yakogo metalu zalezhno vid togo yakij ye bilsh dostupnim na danij moment Takim chinom cej tip karboangidrazi ye kambialistichnim tobto vin mozhe zaminyuvati metal u jogo aktivnomu centri inshimi metalami a same cinkom i kadmiyem cite note FOOTNOTEBertiniGrayStiefelValentine2007 lt sup gt UNIQ nowiki 0000002D QINU Vikipediya Perevirnist storinka UNIQ nowiki 0000002E QINU Kategoriya Statti sho potrebuyut proyasnennya lt sup gt 35 33 Podibnist do inshih karboangidraz red Mehanizm karboangidrazi kadmiyu CDCA po suti takij samij yak i inshih karboangidraz u peretvorenni vuglekislogo gazu ta vodi v bikarbonat i proton 34 Krim togo yak i inshi karboangidrazi CDCA zmushuye reakciyu protikati majzhe tak samo shvidko yak shvidkist difuziyi yiyi substrativ i vona mozhe ingibuvatisya pohidnimi sulfonamidiv i sulfamativ 34 Vidminnosti vid inshih karboangidraz red Na vidminu vid bilshosti inshih karboangidraz ion metalu aktivnogo centru ne zv yazanij troma zalishkami gistidinu ta gidroksid ionom Natomist vin zv yazanij dvoma zalishkami cisteyinu odnim zalishkom gistidinu ta gidroksid ionom sho harakterno dlya b CA 34 35 Cherez te sho kadmij ye slabkoyu kislotoyu vin bude bilsh micno zv yazanij m yakimi osnovnimi ligandami cite note FOOTNOTEBertiniGrayStiefelValentine2007 lt sup gt UNIQ nowiki 00000034 QINU Vikipediya Perevirnist storinka UNIQ nowiki 00000035 QINU Kategoriya Statti sho potrebuyut proyasnennya lt sup gt 38 36 Atomi sirki na zalishkah cisteyinu ye m yakimi osnovami tomu zv yazuyut kadmij silnishe nizh azot na zalishkah gistidinu CDCA takozh maye strukturu trivimirnogo zgortannya yaka ne shozha na bud yaku inshu karboangidrazu a yiyi aminokislotna poslidovnist ne shozha na inshi karboangidrazi 34 Ce monomer z troma domenami kozhen z yakih identichnij za poslidovnistyu aminokislot i kozhen z yakih mistit aktivnij centr z ionom metalu 35 She odna klyuchova vidminnist mizh CDCA ta inshimi karboangidrazami polyagaye v tomu sho CDCA maye mehanizm zamini ioniv kadmiyu na ioni cinku u vipadku yaksho cink staye bilsh dostupnim dlya fitoplanktonu nizh kadmij Aktivnij centr CDCA po suti zamknenij lancyuzhkom iz dev yati aminokislot iz zalishkami glicinu v polozhennyah 1 i 9 Zazvichaj ci vorota zalishayutsya zakritimi a ion kadmiyu zatrimuyetsya vseredini Odnak zavdyaki gnuchkosti ta polozhennyu zalishkiv glicinu ci vorota mozhna vidkriti shob vidaliti ion kadmiyu Todi na jogo misce mozhna postaviti ion cinku i vorota za nim zakriyutsya 34 Buduchi granichnoyu kislotoyu cink ne zv yazhetsya z cisteyinovimi ligandami tak micno yak kadmij ale ferment vse odno bude aktivnim i dosit efektivnim Metal v aktivnomu centri mozhe peremikatisya mizh cinkom i kadmiyem zalezhno vid togo yakogo z nih u danij moment bilshe Same zdatnist CDCA vikoristovuvati kadmij abo cink jmovirno daye T weissflogii perevagu u vizhivanni 32 Transportuvannya kadmiyu red Kadmij vse she vvazhayetsya smertelnim dlya fitoplanktonu u velikih kilkostyah Doslidzhennya pokazali sho T weissflogii maye pochatkovu toksichnu reakciyu na kadmij pid chas vplivu na nogo Toksichnist metalu znizhuyetsya zavdyaki transkripciyi ta translyaciyi fitohelatinu bilkiv zdatnih zv yazuvati ta transportuvati kadmij Pislya zv yazuvannya fitohelatinom kadmij bilshe ne ye toksichnim i jogo mozhna bezpechno transportuvati do fermentu CDCA 31 Takozh bulo pokazano sho poglinannya kadmiyu cherez fitohelatin prizvodit do znachnogo zbilshennya ekspresiyi CDCA 31 CDCA podibni bilki red Inshij fitoplankton z riznih vodnih dzherel perevireno na nayavnist CDCA Bulo viyavleno sho bagato z nih mistyat bilki gomologichni CDCA znajdenim u T weissflogii 31 Ce vklyuchaye vidi z Grejt Bej Nyu Dzhersi a takozh u Tihomu okeani poblizu ekvatora U vsih doslidzhenih vidiv CDCA podibni bilki pokazali visokij riven ekspresiyi navit u visokih koncentraciyah cinku ta za vidsutnosti kadmiyu 31 Podibnist mizh cimi bilkami ta CDCA sho ekspresuyetsya T weissflogii rizna ale voni zavzhdi buli podibnimi shonajmenshe na 67 31 Ulovlyuvannya ta sekvestraciya vuglecyu red Dokladnishe Ulovlennya ta zberigannya vuglecyu Karboangidraza v principi mozhe viyavitisya aktualnoyu dlya zahoplennya vuglecyu Deyaki karboangidrazi mozhut vitrimuvati temperaturu do 107 C i ekstremalnu luzhnist pH gt 10 37 Pilotnij zapusk iz bilsh stabilnim CA na potoci dimovih gaziv yakij skladavsya z 12 13 mol CO mav shvidkist zahoplennya 63 6 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