University:
Swansea University
Course:
PM-133 | Evolutionary and Molecular Genetics
Academic year:

2023
Views:

105

Pages:

4
Author:

Amal J.

Photosystem - IP700reaction centrereceive 700 mm lightjump to highest energylevelstrongest reducing agent (donate e).Aochlorophya like pigmentA1Phyloquinon, vitk like pigmentSereis of fesclusters.fesxfeSAFeSB (XAB)accepte- Fd redFd (feuedoxin)2formsrelease e-Stromal sidelifeloxFNR (Ferredoxin NADPA Reductase) 6CO2 +12H2OC6H12O6 + 602 from water) + 6th20ancient organism dependent on H,S insted of H,O sincerelease of H from S in more easy since Sir less electronepativI stephr2)12H2O12NAPH,11 + ATPC (18)lightreactionredox potential of water+8 svoltredox potential of NADPH-3V6CO2+ 12NADPHH.C6 H2O6 + 12H2ODark reactionSynthesis use NADPHoxidation produce NADH2H2OPS-112NADP+CythofPS-IO2LHCILHCI2NADPH,H+In mt complex arranged in the inner mtmembroneIn chlcrophyllThylakoid membroneShomaouter membIntermemb spaceJonel membThylakoidstacks granalamellae 80% mt gene transcribed in nucleus.only few gones for energy reductionstored Unsmtothers transferedto nuclear genomeproteins post translationlytransfered to mtchloroplastmaternal inberitancePS-II3 complexescytbotsimilar toPS-Imt.P700P680AGAIthe OFesxPAfesaPOBBoglin,fesg2H2OPQO2 evolvingCytBPdcomplexFeSR CytO2t4H+CytPCFNRY/2f.P700PestNADPNADPHH+111I. First complexO2 evolving complex - luminal sidewater splits 4H+(O2EC)concentronteClo Ca Manincome &generate3element of O2ECH+ gradioncalciumManagere (4) Oxidation states of MnMn4thMrswatersplittingliberatesingle electronHe-&Mn+' acceptto next acceptorinsimulturarlyMn+1M+2Mn+3Protein Y2Tyrosine crucial element in Y2. to accepte-flow downwardreaction centre chlorophyllPesochlorophyll ,have ability to accept light at 680nm.Jump into excited state, hyaccepting lightenergy (accept photon)strongest biological oxidising agent. ( accepte)-& transfer e-s.ig,porphysin.Pheophylinchlorophyll like, lack magnesium.QAtightly bound quinol.IIOBloosely bound quionol (similar toobiquinon)locates in stromal sidewhen they accept 2e-, they accept 2H't from stromon andmove & deliver e to bot @luminaissideOcyclege- throughCyclingpath.IQBrieske centre Fes. rCythQB°I II QBH2Cytf(PC next acceptor) -le-2H+8H! canbethispathnonsinted