Puas yog porins zog nyob ntawm?
Puas yog porins zog nyob ntawm?

Video: Puas yog porins zog nyob ntawm?

Video: Puas yog porins zog nyob ntawm?
Video: Yasmi - Nyob Ntawm No ft. Gideon 2024, Kaum ib hlis
Anonim

Tetracyclines raug thauj mus rau hauv cov kab mob gram-tsis zoo los ntawm kev sib kis tsis zoo los ntawm cov kab dej hydrophilic tsim los ntawm cov porin proteins ntawm cov cell membrane sab nrauv thiab los ntawm kev thauj mus los ntawm txoj kev. zog - nyob system uas tso lawv hla cytoplasmic membranes.

Ua kom pom qhov no, porins hauv cov kab mob gram tsis zoo yog dab tsi?

General kab mob porins yog ib tsev neeg ntawm cov proteins los ntawm cov txheej membranes ntawm Gram - kab mob tsis zoo . Lawv yog lub luag haujlwm rau 'molecular sieve' cov khoom ntawm cov txheej membrane. Porins tsim cov dej loj loj uas tso cai rau kev nthuav tawm ntawm hydrophilic molecules mus rau hauv qhov chaw periplasmic.

Tsis tas li ntawd, porins nyob qhov twg? Porins . Porins yog proteins uas yog nyob nyob rau hauv daim nyias nyias ntawm Gram-negative kab mob. Lawv ua haujlwm los tsim cov dej ntim dej los ntawm daim nyias nyias, los ntawm sab nrauv mus rau periplasm, uas yog ib cheeb tsam. nyob nruab nrab ntawm sab nrauv thiab sab hauv daim nyias nyias.

Yog li, cov porins puas xaiv tau?

Porins yog cov dej puv pores thiab cov channel pom nyob rau hauv daim nyias nyias ntawm cov kab mob thiab eukaryotes. Ob hom ntawm porins muaj nyob rau thauj cov khoom sib txawv - dav thiab xaiv . General porins tsis muaj qhov tshwj xeeb ntawm cov substrate, txawm tias qee qhov kev nyiam me ntsis rau anions lossis cations.

Vim li cas ho tsis feem ntau cov kab mob Gram zoo muaj Porins?

Gram zoo hlwb muaj tsis muaj daim nyias nyias. ( Porins yog OUTER membrane channels) C. Lawv xav tau porins tso cai ions los ntawm cov tuab peptidoglycan txheej. (+0.5: G+ cells DO muaj Teichoic acids thiab tuab PG, tab sis cov no muaj tsis muaj dab tsi ua nrog ' porins.

Pom zoo: