Qhov sib txawv tseem ceeb ntawm plastoquinone thiab plastocyanin yog plastoquinone yog lipophilic cab kuj molecule uas hloov electrons rau plastocyanin los ntawm cytochrome b6f protein complex. Tab sis, plastocyanin yog ib qho me me dej-soluble xiav-tooj liab protein uas txais ib khub ntawm electrons los ntawm cytochrome b6f complex thiab kis nws mus rau photosystem kuv nyob rau hauv lub thylakoid chaw.
Photosynthesis muaj ob hom kev tshwm sim raws li cov tshuaj tiv thaiv lub teeb thiab lub teeb ywj pheej. Ob hom photosystems no ua lub luag haujlwm tseem ceeb hauv kev cuam tshuam lub teeb. Lawv yog photosystem I thiab II. Photosystems yog loj complexes ntawm cov proteins thiab pigments los yog lub teeb-absorbing molecules. Lawv ntes lub zog ntawm lub hnub ci. P700 yog qhov chaw tshuaj tiv thaiv ntawm photosystem I thaum P680 yog qhov chaw tshuaj tiv thaiv ntawm photosystem II. Txhua photosystem absorbs lub teeb thiab tsim ATP ntawm photophosphorylation. Lawv kuj tsim NADPH. Ntau hom kev txais hluav taws xob koom nrog hauv cov kev cuam tshuam ntawm lub teeb. Plastoquinone thiab plastocyanin yog ob hom molecules koom nrog hauv electron thauj saw.
YPlastoquinone yog dab tsi?
Plastoquinone yog ib qho ntawm peb hom electron cab kuj koom nrog hauv cov saw hlau xa hluav taws xob photosynthetic. Nws yog lipophilic carrier molecule thiab lub luag haujlwm ua haujlwm ntawm photosynthesis. Plastoquinone yog nyob rau hauv lub puab thylakoid membrane ntawm chloroplasts. Raws li kev tsim qauv, plastoquinone yog tsim los ntawm cuaj isoprenyl units nrog 45 C atoms nyob rau hauv cov saw hlau sab thiab nws zoo ib yam li ubiquinone.
Daim duab 01: Plastoquinone
Plastoquinone muaj nyob hauv photosystem II. Thaum plastoquinone txais cov electrons los ntawm photosystem II, nws raug txo mus rau hauv plastoquinol los ntawm kev xa cov electrons rau plastocyanin los ntawm cytochrome b6f protein complex.
Plastocyyanin yog dab tsi?
Plastocyanin yog lwm cov khoom siv hluav taws xob koom nrog hauv lub teeb-nyob ntawm photosynthesis. Nws yog dej-soluble tooj liab-muaj compound uas txais electrons los ntawm cytochrome b6f complex thiab kis mus rau photosystem kuv nyob rau hauv lub thylakoid qhov chaw thiab txo cov P700+Plastocycnin yog nyob ntawm tooj liab thiab nws yog ib qho tseem ceeb rau cov nroj tsuag. Tsis muaj tooj liab yuav cuam tshuam rau cov nroj tsuag.
Daim duab 02: Plastocynin
Plastocyanin yog nyob rau hauv lub thylakoid lumen. Structureally, nws yog ib tug metalloprotein uas muaj yim-stranded antiparallel β- chim nrog ib tug tooj liab atom ntawm qhov chaw.
Dab tsi zoo sib xws ntawm Plastoquinone thiab Plastocyanin?
- Plastoquinone thiab plastocyanin tshwj xeeb rau cov nroj tsuag.
- Lawv yog cov nqa khoom siv hluav taws xob koom nrog hauv cov saw hlau xa hluav taws xob photosynthetic.
- Lawv yog cov khoom sib txuas.
- Cov tebchaw no thauj cov hluav taws xob hla qhov deb ntawm qhov sib txawv thiab ua ib feem tshwj xeeb hauv photosynthetic zog hloov dua siab tshiab.
- Cytochrome b6f conveys electrons ntawm plastoquinone thiab plastocyanin.
- Ob leeg plastoquinone thiab plastocyanin nruab nrab hloov hluav taws xob los ntawm PS II rau PS I.
Qhov txawv ntawm Plastoquinone thiab Plastocyanin yog dab tsi?
Plastoquinone yog ib qho khoom siv hluav taws xob uas thauj cov hluav taws xob los ntawm photosystem II mus rau cytochrome b 6 f. Plastocyanin, ntawm qhov tod tes, yog tooj liab-muaj electron cab kuj protein uas txais electrons los ntawm cytochrome b6f thiab hla mus rau P700+ ntawm photosystem kuv Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm plastoquinone thiab plastocyanin.
Ntxiv mus, plastoquinone muaj nyob rau hauv daim nyias nyias ntawm thylakoid, thaum plastocyanin nyob rau hauv lub lumen ntawm thylakoid. Tsis tas li ntawd, plastocyanin nyob ntawm tooj liab, thaum plastoquinone tsis nyob ntawm tooj.
Hauv qab infographic qhia txog qhov sib txawv ntawm plastoquinone thiab plastocyanin.
Summary – Plastoquinone vs Plastocyanin
Muaj peb qhov sib txawv ntawm cov khoom siv hluav taws xob sib txawv koom nrog hauv cov saw hlau xa hluav taws xob photosynthetic. Lawv yog plastocyanin, plastoquinone, thiab ferredoxin. Ntawm cov no, plastoquinone yog lipophilic molecule uas txais electron los ntawm photosystem II thiab dhau mus rau cytochrome b6f. Lub caij no, plastocyanin yog tooj liab-muaj dej-soluble protein uas txais electrons los ntawm cytochrome b6f thiab dhau mus rau P700+ ntawm photosystem I. Ntxiv mus, Plastoquinone muaj nyob rau hauv thylakoid daim nyias nyias, thaum plastocyanin nyob rau hauv lub thylakoid lumen. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm plastoquinone thiab plastocyanin.
