Video: Cov proteins nyob qhov twg hauv lub cell membrane?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Peripheral membrane proteins yog pom nyob rau sab nraud thiab sab hauv ntawm daim nyias nyias , txuas nrog rau ib qho cov proteins los yog phospholipids.
Ib yam li ntawd, tib neeg nug, dab tsi yog cov proteins pom hauv cell membrane?
Membrane Proteins - Ntog Ntog Koj yuav nrhiav tsheej lab ntawm embedded protein ntau molecules thaum koj saib cov cell membrane . Txhua hom protein ntau muaj lub hom phiaj tshwj xeeb. Piv txwv ntawm membrane proteins suav nrog ion channels, receptor cov proteins , thiab cov proteins uas tso cai hlwb los sib txuas.
Kuj Paub, vim li cas cov proteins muaj nyob hauv cell membranes? Membrane proteins ua ntau yam haujlwm tseem ceeb rau kev ciaj sia ntawm cov kab mob: Membrane tus neeg txais kev pab cov proteins relay teeb liab ntawm lub cell cov sab hauv thiab sab nraud ib puag ncig. Kev thauj mus los cov proteins txav molecules thiab ions hla lub daim nyias nyias . Cell adhesion molecules tso cai hlwb los txheeb xyuas thiab sib tham.
Tsis tas li ntawd, cov proteins nyob qhov twg hauv lub cell?
Ribosomes yog pom nyob rau hauv ntau qhov chaw nyob ib ncig ntawm eukaryotic cell . Tej zaum koj yuav nrhiav Lawv ntab hauv cytosol. Cov floating ribosomes ua cov proteins uas yuav siv tau nyob rau hauv cell . Lwm cov ribosomes yog pom ntawm endoplasmic reticulum.
Dab tsi yog 2 hom proteins pom nyob rau hauv cell membrane?
2 yog cov ntaub ntawv uas muaj nyob rau hauv integral membrane proteins , xws li, transmembrane α-helix protein ntau , transmembrane α-helical protein ntau thiab transmembrane β-daim ntawv protein ntau . Ib qho monotopic cov proteins yog ib hom ntawm integral membrane proteins uas txuas nrog tsuas yog ib sab ntawm lub daim nyias nyias thiab tsis txhob hla tag nrho txoj kev hla.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
Lub organelle twg ua haujlwm raws li qhov chaw xa ntawv ntawm lub xov tooj ntawm tes txheeb cov proteins thiab xa lawv mus rau lawv qhov chaw xav tau sab hauv lossis sab nraud ntawm tes?
Golgi Hais txog qhov no, dab tsi organelle yog lub luag haujlwm rau kev thauj mus los? endoplasmic reticulum (ER Qhov thib ob, cov proteins txav mus los ntawm lub cell li cas? Cov proteins txav mus los endomembrane system thiab raug xa tawm los ntawm lub ntsej muag trans ntawm Golgi apparatus nyob rau hauv thauj vesicles uas txav mus los cytoplasm thiab tom qab ntawd fuse nrog plasma membrane tso tawm protein ntau mus rau sab nraum lub cell .
Cov proteins twg pom muaj nyob hauv cell membrane?
Integral membrane proteins muaj xws li transmembrane proteins thiab lipid-anchored proteins. Ob hom membrane-spanning domains muaj nyob rau hauv transmembrane proteins: ib los yog ntau tshaj α helices los yog, tsawg dua, ntau β strands (raws li nyob rau hauv porins)
Dab tsi yog 2 hom proteins pom nyob rau hauv cell membrane?
2 yog cov ntaub ntawv muaj nyob rau hauv ib qho membrane proteins, xws li, transmembrane α-helix protein, transmembrane α-helical protein thiab transmembrane β-daim ntawv protein. Integral monotopic proteins yog ib hom integral membrane proteins uas txuas rau ib sab ntawm daim nyias nyias thiab tsis span tag nrho txoj kev hla
Dab tsi yog 3 hom proteins pom nyob rau hauv cell membrane?
Raws li lawv cov qauv, muaj peb yam tseem ceeb ntawm cov membrane proteins: thawj ib yog ib qho membrane protein uas yog mus tas li anched los yog ib feem ntawm daim nyias nyias, hom thib ob yog peripheral membrane protein uas tsuas yog ib ntus txuas rau lipid bilayer los yog rau lwm yam. integral proteins, thiab peb