Qhov sib txawv tseem ceeb ntawm cytochrome C thiab lwm yam cytochromes yog tias cytochrome C yog ib qho tseem ceeb ntawm cov saw hlau thauj electron thaum lwm cov cytochromes tsis yog.
YCytochromes yog hemeproteins. Hauv cov lus yooj yooj yim, lawv yog cov protein uas muaj heme. Muaj plaub yam loj ntawm cytochromes raws li hom prosthetic heme pawg: cytochromes a, cytochromes b, cytochromes c thiab cytochrome d. Qee qhov yog globular proteins, thaum lwm tus yog cov proteins membrane. Yeej, cytochromes yog electron hloov cov proteins. Ntawm plaub hom no, cytochrome c yog qhov tseem ceeb ua haujlwm rau cov saw hlau thauj hluav taws xob. Nws kuj yog qhov ruaj khov tshaj plaws thiab ntau tus tswv cuab ntawm tsev neeg cytochrome.
YCytochrome C yog dab tsi?
Cytochrome c yog ib hom cytochrome uas yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob thauj khoom ntawm kev ua pa aerobic. Cytochrome c hloov hluav taws xob los ntawm cytochrome reductase mus rau cytochrome oxidase. Ntxiv nrog rau kev ua yeeb yam raws li cov khoom siv hluav taws xob, cytochrome c koom nrog apoptosis. Ntxiv mus, nws catalyzes ntau redox cov tshuaj tiv thaiv, xws li hydroxylation thiab aromatic oxidation, thiab lwm yam. Nws yog ib tug me me heme protein nyob rau hauv lub puab membrane ntawm mitochondria. Qhov hnyav molecular yog li 12 kDa. Kwv yees li, nws yog spherical nyob rau hauv cov duab. Cov protein no muaj ib pab pawg heme.
Daim duab 01: Cytochrome c
Cytochrome c yog cov protein ntau hauv dej. Nws muaj ib tug ntev carbon saw txuas. CYCS noob nyob rau hauv tib neeg genome encodes rau cytochrome c. Ntxiv mus, nws yog ib qho kev txuag protein ntau pom nyob rau hauv cov tsiaj, nroj tsuag thiab kab mob unicellular.
Lwm yam Cytochromes yog dab tsi?
Cytochrome a, b thiab d yog lwm yam peb hom cytochromes. Lawv muaj heme a, b thiab d raws li lawv cov pab pawg prosthetic. Cov hlau hauv cytochrome muaj nyob hauv ferrous (Fe2+) thiab ferric (Fe3+) xeev. Lawv muaj peev xwm koom nrog hauv kev hloov pauv hluav taws xob zoo li catalysis los ntawm cov tshuaj tiv thaiv redox. Yog li ntawd, lawv feem ntau koom nrog cov txheej txheem hloov hluav taws xob ntawm cov kab mob. Cytochromes muaj nyob rau hauv ntau yam kab mob anaerobic thiab nyob rau hauv tag nrho cov kab mob aerobic.
Dab tsi zoo sib xws ntawm Cytochrome C thiab Lwm Cytochromes?
- YCytochromes yog heme proteins.
- Lawv muaj nyob hauv ntau yam kab mob anaerobic thiab hauv txhua yam kab mob aerobic.
- Lawv koom nrog kev hloov pauv hluav taws xob thiab catalysis los ntawm cov tshuaj tiv thaiv redox.
- Ntxiv mus, lawv txhua tus muaj lub atom hlau.
Qhov txawv ntawm Cytochrome C thiab Lwm Cytochromes yog dab tsi?
Cytochrome c yog ua haujlwm koom nrog hauv cov khoom siv hluav taws xob thauj khoom ntawm mitochondria. Lwm cov cytochromes tsis koom nrog cov saw hlau thauj khoom. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cytochrome c thiab lwm yam cytochromes. Tsis tas li ntawd, cytochrome c muaj heme c prosthetic pawg thaum cytochrome a, b thiab c muaj heme a, b thiab d prosthetic pawg, feem.
Cov lus hauv qab no qhia txog qhov sib txawv ntawm cytochrome c thiab lwm yam cytochromes.
Summary – Cytochrome C vs Lwm Cytochromes
Cytochromes yog cov proteins uas muaj ib lossis ntau pawg heme. Cytochrome a, b, c thiab d yog plaub hom cytochromes. Lawv txawv ntawm ib leeg raws li hom heme pawg. Cytochrome c muaj heme c thaum lwm cytochromes muaj heme a, b thiab d. Ntxiv mus, cytochrome c yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob thauj khoom thaum lwm cov cytochromes tsis koom nrog cov saw hlau thauj khoom. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cytochrome c thiab lwm yam cytochromes.
