Endoplasmic reticulum: sebopeho le mosebetsi

Endoplasmic reticulum - ka e tlamang organelle ea lisele eukaryotic. E fumanoa lisele tsa limela, liphoofolo le batho. Mosebetsi ona karolo ea sele tse fapa-fapaneng le ba haholo-holo tse amanang le tswakana, phetolo le lipalangoang tsa metsoako manyolo.

Ka lekhetlo la pele ho reticulum endoplasmic ile ha fumanoa ka 1945. American rasaense K. Porter mo bona le e mong oa microscopes pele motlakase. Ho tloha ka nako eo, ho ile ka qala ke le mafolofolo boboleling ho etsa lipatlisiso tsa lona.

Ka seleng, ho na le liphetolelo tse peli tsa organelle ena:

• The granular kapa kaba endoplasmic reticulum (koahetsoeng plurality ribosomes).
• Ba le boreleli kapa boreleli endoplasmic reticulum.

E mong le e mofuta oa reticulum na tse ling tse le ho etsa mosebetsi o fapaneng ka ho feletseng. A re ke re sheba bona ka ho qaqileng le ho feta.

Granular endoplasmic reticulum: mohaho. organelle ena ke tsamaiso e khopo tanka, vesicles le tubules. Marako a oona a bopilwe bilipidnoy lera. E le bophara ba cavity e ka 'na Range ho tloha 20 NM ho micrometers maloa - kaofela itšetlehile ka mosebetsi oa lisele secretory.

O ka e khethehileng hanyane lisele tse, tse tsejoang ka boemo ba ka tlaase ea metabolism, e EPS rometsweng ka litanka tse seng kae feela ba phasalla. Ka hare ho sele, e leng ka mafolofolo synthesize protheine endoplasmic reticulum bopilwe ka plurality tsa litanka le se makala a tubules tsamaiso.

Ka tloaelo ho, granular EPM ka lera la tubular e amana le enfelopo ea nyutlelie - ka tsela ena o fetang dithulaganyo rarahaneng tswakana le limolek'hule tsa lipalangoang protheine.

Granular endoplasmic reticulum: mesebetsi. Joalokaha ho se ho boletsoe, holim 'a feletseng ka ho XPS cytoplasm koahetsoe ke ribosomes, tse tsebahalang ho ameha tswakana protheine. EPS - sebaka sa tswakana le lipalangoang tsa metsoako protheine.

organelle ena le boikarabelo ba ho tswakana tsa cytoplasmic lera liprotheine bohlokoa. Empa maemong a mangata ke limolek'hule tse ding hape le protheine ka tsela vesicles lera ba isoa ho Golgi sethusathuto, moo ba ka ho eketsehileng phetolo le kabo litlhoko tsa lisele, ka ho latellana, le lisele.

Ho phaella moo, cavities etsahala EPS ditanka le liphetoho tse itseng protheine e - mohlala, kamohelo ea k'habohaedreite motsoako. Mona, ke aggregation tsa granules kgolo secretory ba thehoa.

Smooth endoplasmic marangrang: sebopeho le mosebetsi. Sebōpeho sa EPS le boreleli na ba bang ba se tšoane. Mohlala, organelle ena e na feela ea ditanka le ea se nang mokhoa oa ho tubules. Mehahong joalo EPS, e le busa, ba nyenyane, empa e le bophara ba tanka, ka fapana le hoo, ho feta.

The boreleli endoplasmic reticulum e sa amanang le le tswakana ea likarolo protheine empa o etsa palo ya mesebetsi ka tsela e tsoanang bohlokoa. Mohlala, mona ke tswakana hormone steroid ka batho le vertebrates tsohle. Ke ka lebaka leo ba modumo ea EPS boreleli liseleng adrenal e kgolo haholo.

Liseleng sebete EPS hlahisa enzyme hlokahala amehang k'habohaedreite metabolism, e leng li bole kapele 'ea glycogen. Ho e boetse e tsejoa hore lisele sebete ba na le boikarabelo bakeng sa neutralization ea chefo. Ena ditanka organelle le tswakana tsa motsoako o hydrophilic eo ka nako eo khomaretse ka molek'hule nang le chefo e ho eketsa solubility lona ka mali le moroto. Hoa thahasellisa hore ka hepatocytes, eo kamehla a oa tlas'a tšusumetso ea chefo (chefo, joala), hoo e ka bang tsohle sele lula ditanka ka thata-thata aroloa ka boreleli EPS.

Liseleng mesifa, ho na le mofuta o khethehileng oa EPS boreleli - sarcoplasmic reticulum. Ho nka khato e le depo k'halsiamo laoloang ka tsela eo tšebetso mosebetsi le lisele tse phomotse.

E le ka bonoa, EPS mesebetsi ya bona e fapa-fapaneng le ea bohlokoa haholo bakeng sa ho ea ka tšebetso e tloaelehileng ea lisele ka bophelo bo botle.