I-DMPT, INOMBOLO YE-CAS: 4337-33-1. Eyona ilungileyointo etsala amanzingoku!

I-DMPTeyaziwa ngokuba yi-dimethyl-β-propiothetin, ifumaneka kakhulu kwizityalo zaselwandle nakwizityalo eziphezulu ze-halophytic. I-DMPT inefuthe elikhuthaza imetabolism yesondlo sezilwanyana ezanyisayo, iinkukhu, kunye nezilwanyana zasemanzini (iintlanzi kunye nee-shrimp). I-DMPT sisithako esinefuthe elinamandla kakhulu kwizilwanyana zasemanzini phakathi kwazo zonke iikhompawundi ezaziwayo eziqulathe (CH) kunye ne-S-groups.

1. Umthombo we-DMPT

I-dimethyl sulfide (DMS) eveliswa yiPolysipho - nia fastigata ikakhulu ivela kwiI-DMPT, ekwangumxhasi we-methyl osebenzayo kwi-algae, kwaye umlawuli oyintloko we-osmotic we-algae kunye nesityalo esimdaka iSpartina angelica nayo yi-DMPT. Umxholo we-DMPT uyahluka phakathi kweentlobo ezahlukeneyo ze-seaweed, kwaye umxholo wohlobo olufanayo lwe-seaweed nawo uyahluka ngamaxesha ahlukeneyo onyaka. I-DMPT inokukhawulezisa kakhulu ukondla nokukhula kweentlanzi ezahlukeneyo zamanzi acocekileyo. Isiphumo sokutya se-DMPT sahlukile kwezinye izinto ezifana ne-L-amino acids okanye i-nucleotides, kwaye inefuthe lokutya nokukhula phantse kuzo zonke izilwanyana zasemanzini.

2.1 IiLigand ezisebenzayo njengeeReceptors zokungcamla

Uphando malunga nee-receptors kwi-fish chemical sensory organs ezinokunxibelelana namaqela e-(CH) S-groups alukabi nanto. Ngokweziphumo zovavanyo zokuziphatha ezikhoyo, kunokuhlalutywa ukuba iintlanzi ngokuqinisekileyo zine-taste receptors ezinokunxibelelana nee-compounds ezinobunzima obuphantsi beemolekyuli eziqulethe amaqela e-(CH), N-, kunye ne-(CH2) 2S.

2.2 Njengomnikeli we-methyl

Amaqela (CH) kunye nama-S kwiI-DMPTIimolekyuli ziyimithombo yamaqela e-methyl afunekayo kwimetabolism yesondlo sezilwanyana. Kukho iintlobo ezimbini ze-methyltransferases (EC2.1.1.3 kunye ne-EC2.1.1.5) kwisibindi sezilwanyana ezisetyenziswa zizilwanyana (CH) kunye ne-S.

Kufunyenwe ukuba uxinaniso lwe-DMPT kunye nesantya sokukhupha i-DMS kwiiseli zolwandle zanda ngokwanda kwetyuwa kwindawo yokukhulisa izityalo zolwandle olukhuliswe (Hymenonas carterae).

I-DMPTityebile kwiiseli zeemollusk ezininzi zephytoplankton, ialgae, kunye ne-symbiotic ezifana neeclams kunye neekorale, kunye nakwimizimba ye-krill kunye neentlanzi. U-Iida et al. (1986) baqinisekisile ukuba umxholo we-DMPT kunye nokuveliswa kwe-DMS kwiintlanzi kunxulumene kakuhle nomxholo we-DMPT ekutyeni kwabo, nto leyo ebonisa ukuba irayisi ye-DMPT kwizilwanyana ivela kwi-bait kwaye ingena emzimbeni wesilwanyana somntu ngokusebenzisa uthotho lokutya kwiindawo eziphilayo zaselwandle. I-Algae inokwenza i-DMPT kwaye iyiqokelele kumanqanaba aphezulu (3-5 mmol/L) emzimbeni. I-DMPT kwiintlanzi kunye neemollusk isondele kumanqanaba azo ekutyeni, kwaye uxinzelelo lwe-DMPT lubonisa umkhwa ophantsi kulandelelwano lwe-algae (1 mmol/L), iimollusk (0.1 mmol/L), kunye neentlanzi (0.01 mmol/L).

Indlela yePhysiological yeI-DMPTIsenzo

Kwiminyaka yakutshanje, uphando lufumanise ukuba i-DMPT inefuthe elikhuthazayo kwindlela yokutya kunye nokukhula kweentlanzi ezahlukeneyo zaselwandle nezamanzi acocekileyo, ii-crustaceans, kunye ne-shellfish, ezinokuphucula amandla azo okulwa noxinzelelo kunye nokuzilolonga, kwaye zongeze ii-enzymes eziphambili ze-methyl yeqela eliphantsi lokuxinwa ekutyeni. Ukusebenzisa isibindi se-sea bream njengezinto zovavanyo kunye neekhompawundi ezahlukeneyo eziqulathe (CH) kunye ne-S - amaqela njengee-substrates, kwafunyaniswa ukuba i-E C.2.1.1.3 kunye ne-E Umsebenzi we-enzyme uphezulu xa i-DMPT isetyenziswa njenge-substrate.

3. Imiphumo yesondlo ye-DMPT kwizilwanyana zasemanzini

Iikhompawundi ze-organic eziphantsi kwe-molecular ezingamashumi amabini ezine-(CH) kunye ne-S-groups zasetyenziswa ekuziphatheni kokuluma kunye novavanyo lwe-electrophysiological kwiintlanzi zamanzi olwandle kunye namanzi acocekileyo. Kufunyaniswe ukuba i-DMPT yayinefuthe elinamandla ekukhuthazeni ukuziphatha kokuluma kweentlobo ezintathu zeentlanzi, kuquka i-tuna yamanzi acocekileyo, i-carp, kunye ne-black crucian carp (i-Carassius auratus cuviera). Ikwakhuthaze kakhulu indlela yokutya ye-sea water true scale (i-Pagrus major) kunye ne-five scales (i-Seriola quinquera diata).

Xuba i-DMPT kunye nezinye iikhompawundi ezine-sulfur kuxinzelelo lwe-1.0mmol/L. kwiindidi ezahlukeneyo zokutya zovavanyo, kwaye endaweni yeqela lolawulo ngamanzi acocekileyo ukwenza uvavanyo lokuphendula kokutya kwi-crucian carp. Iziphumo zibonise ukuba kumaqela amane okuqala ovavanyo, iqela le-DMPT lalinomyinge wamaza okuluma aphezulu ali-126 kuneqela lolawulo; Kuvavanyo lwesibini lwamaqela ama-5, iqela le-DMPT laliphezulu ngokuphindwe ngama-262.6 kuneqela lolawulo. Kuvavanyo oluthelekisayo ne-glutamine, kwafunyaniswa ukuba kuxinzelelo lwe-1.0mmol/L.