DMPT, CAS NO.: 4337-33-1.Ea mantlhasekgahla sa metsinghona joale!

DMPTe tsejwang e le dimethyl-β-propiothetin, e teng haholo dimeleng tsa lewatleng le halophytic tse phahameng.DMPT e na le phello e khothalletsang metabolism ea phepo ea liphoofolo tse anyesang, likhoho le liphoofolo tsa metsing (litlhapi le shrimp).DMPT ke ntho e nang le phello e matla ka ho fetisisa ho liphoofolo tse phelang metsing har'a metsoako eohle e tsejoang e nang le (CH) le S-groups.

1. Mohloli oa DMPT

Dimethyl sulfide (DMS) e hlahisoang ke Polysipho - nia fastigata haholo-holo e tsoaDMPT, eo hape e leng mofani oa methyl ea sebetsang ka har'a algae, le molaoli ea ka sehloohong oa osmotic oa algae le semela sa mudflat Spartina angelica hape ke DMPT.Likahare tsa DMPT li fapana har'a mefuta e fapaneng ea limela tsa leoatleng, 'me litaba tsa mofuta o tšoanang oa limela tsa leoatleng le tsona lia fapana ka linako tse fapaneng tsa selemo.DMPT e ka potlakisa phepelo le kholo ea litlhapi tse fapaneng tsa metsing a hloekileng.Phepo e susumetsang ea DMPT e fapane le lintho tse ling tse kang L-amino acid kapa nucleotide, 'me e na le liphello tse khothalletsang ho fepa le ho hōla hoo e batlang e le liphoofolo tsohle tsa metsing.

2.1 Li-Ligands tse Sebetsang e le Li-Receptors tsa Tatso

Patlisiso mabapi le li-receptors tsa litho tsa kutlo tsa lik'hemik'hale tsa tlhapi tse ka kopanang le (CH) S-groups e ntse e se na letho.Ho tsoa ho liphetho tse teng tsa liteko tsa boitšoaro, ho ka hlahlojoa hore litlhapi li na le li-receptor tsa tatso tse ka sebelisanang le metsoako e tlase ea boima ba limolek'hule e nang le (CH), N -, le (CH2) 2S - lihlopha.

2.2 Joaloka mofani oa methyl

The (CH) le S-lihlopha hoDMPTmolek'hule ke mehloli ea lihlopha tsa methyl tse hlokahalang bakeng sa metabolism ea phepo ea liphoofolo.Ho na le mefuta e 'meli ea methyltransferase (EC2.1.1.3 le EC2.1.1.5) sebeteng sa liphoofolo tse sebelisoang ke liphoofolo (CH) le S.

Ho ile ha lemohuoa hore bongata ba DMPT le sekhahla sa ho ntšoa ha DMS liseleng tsa maoatleng a leoatleng li eketsehile ka keketseho ea letsoai mocheng oa setso oa limela tsa leoatleng (Hymenonas carterae).

DMPTe ruisitsoe liseleng tsa mefuta e mengata ea phytoplankton, algae le mollusk tse tšoanang le li-clam le likorale, hammoho le 'meleng oa krill le oa litlhapi.Iida et al.(1986) e netefalitse hore litaba tsa DMPT le tlhahiso ea DMS ka litlhapi li amana hantle le litaba tsa DMPT lijong tsa bona, ho bonts'a hore raese ea DMPT liphoofolong e tsoa ho Bait mme e kena 'meleng oa motho oa liphoofolo ka ketane ea lijo tikolohong ea maoatle. .Algae e ka kopanya DMPT mme ea e bokella maemong a holimo (3-5 mmol / L) 'meleng.DMPT litlhapi le li-mollusk li haufi le maemo a tsona a lijo, 'me mahloriso a DMPT a bontša mokhoa o fokotsehang ka tatellano ea algae (1 mmol / L), mollusks (0.1 mmol / L), le tlhapi (0.01 mmol / L).

The Physiological Mechanism eaDMPTKetso

Lilemong tsa morao tjena, lipatlisiso li fumane hore DMPT e na le phello e khothalletsang boitšoaro ba ho fepa le ho hōla ha litlhapi tse fapa-fapaneng tsa leoatleng le metsing a hloekileng, li-crustaceans le shellfish, tse ka ntlafatsang matla a tsona a ho loantša khatello ea kelello le ho ikoetlisa, le ho tlatsetsa li-enzyme tsa bohlokoa tsa sehlopha se tlaase sa methyl. dijong.Ho sebelisa sebete sa sea bream e le lisebelisoa tsa liteko le metsoako e sa tšoaneng e nang le (CH) le S - lihlopha e le li-substrates, ho ile ha fumanoa hore E C.2.1.1.3 le E Ts'ebetso ea enzyme e phahameng ka ho fetisisa ha DMPT e sebelisoa e le substrate.

3. Liphello tsa phepo ea DMPT ho liphoofolo tse phelang metsing

Likhomphutha tse mashome a mabeli tse tlase tsa boima ba limolek'hule tse nang le (CH) le S-groups li ile tsa sebelisoa bakeng sa boitšoaro bo lomang le liteko tsa electrophysiological metsing a leoatle le litlhapi tsa metsi a hloekileng.Ho ile ha fumanoa hore DMPT e na le phello e matla ka ho fetisisa e khothalletsang boitšoaro ba ho loma ba mefuta e meraro ea litlhapi, ho akarelletsa le tuna ea metsi a hloekileng, carp, le black crucian carp (Carassius auratus cuviera).E boetse e khothalelitse haholo mokhoa oa ho fepa oa sekala sa 'nete sa metsi a leoatle (Pagrus major) le sekala tse hlano (Seriola quinquera diata).

Kopanya DMPT le metsoako e meng e nang le sebabole mokong oa 1.0mmol/L.lijong tse fapaneng tsa liteko, 'me u nkele sehlopha sa taolo sebaka ka metsi a hloekisitsoeng ho etsa liteko tsa karabo ea phepelo ho crucian carp.Liphello li bontšitse hore lihlopheng tse 'nè tsa pele tsa liteko, sehlopha sa DMPT se ne se e-na le karolelano ea maqhubu a holimo a 126 ho feta sehlopha sa taolo;Ketsahalong ea bobeli ea sehlopha sa 5, sehlopha sa DMPT se ne se le makhetlo a 262.6 ho feta sehlopha sa taolo.Tekong ea papiso ea glutamine, ho ile ha fumaneha hore ka bongata ba 1.0mmol/L.