Summary
The complex regulation, metabolism and physiology of the Mg branch of tetrapyrrole biosynthesis have developed into an attractive research area. Any change in plant development as well as in growth and environmental conditions provokes changes in metabolic activities of chlorophyll synthesis including de novo synthesis of proteins and cofactors, as well as protein modification and degradation. Transcriptional and different posttranslational control mechanisms have been reported for chlorophyll synthesis, which underscore the need for a very dynamic and flexible regulatory system. In the following paragraphs the enzymes of the Mg branch and their unique catalytic reactions are introduced. The control of expression and posttranslational modification of enzymes, the association of enzymes with cofactors and other compounds and the assembly into protein complexes as well as the activation mechanisms of these enzymes will be surveyed. Furthermore, the review discusses particular regulatory incentives originating from the Mg branch to be advantageous for the entire tetrapyrrole biosynthetic pathway and, hence, for chloroplast development. It also comments on the significant gaps in our understanding of the regulatory mechanisms of the Mg branch of tetrapyrrole biosynthesis.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Abbreviations
- ALA:
-
– 5-aminolevulinic acid
- MTF:
-
–S-Adenosyl-L-methionine:Mg protoporphyrin IX methyltransferase
References
Alawady AE and Grimm B (2005) Tobacco Mg protoporphyrin IX methyltransferase is involved in inverse activation of Mg porphyrin and protoheme synthesis. Plant J 41: 282–290
Alawady A, Reski R, Yaronskaya E and Grimm B (2005) Cloning and expression of the tobacco CHLM sequence encoding Mg protoporphyrin IX methyltransferase and its interaction with Mg chelatase. Plant Mol Biol 57: 679–691
Apchelimov AA, Soldatova OP, Ezhova TA, Grimm B and Shestakov SV (2007) The analysis of the ChlI 1 and ChlI 2 genes using acifluorfen-resistant mutant of Arabidopsis thaliana. Planta 225: 935–943
Averina NG, Yaronskaya EB, Rassadina VV and Walter G (1996) J Photochem Photobiol 36: 17
Axelsson E, Lundqvist J, Sawicki A, Nilsson S, Schröder I, Al-Karadaghi S, Willows RD and Hansson M (2006) Recessiveness and dominance in barley mutants deficient in Mg-chelatase subunit D, an AAA protein involved in chlorophyll biosynthesis. Plant Cell 18: 3606–3616
Baier M and Dietz KJ (2005) Chloroplasts as source and target of cellular redox regulation: a discussion on chloroplast redox signals in the context of plant physiology. J Exp Bot 56: 1449–1462
Beck CF (2005) Signaling pathways from the chloroplast to the nucleus. Planta 222: 743–756
Berthold DA and Stenmark P (2003) Membrane-bound diiron carboxylate proteins. Ann Rev Plant Biol 54: 497–517
Block MA, Tewari AK, Albrieux C, Maréchal E and Joyard J (2002) The plant S-adenosyl-L-methionine:Mg-protoporphyrin IX methyltransferase is located in both envelope and thylakoid chloroplast membranes. Eur J Biochem 269: 240–248
Bollivar DW and Beale SI (1996) The chlorophyll biosynthetic enzyme Mg-protoporphyrin IX monomethyl ester (oxidative) cyclase. Plant Physiol 112: 105–114
Bollivar DW, Suzuki JY, Beatty JT, Dobrowolski JM and Bauer CE (1994) Directed mutational analysis of bacteriochlorophyll a biosynthesis in Rhodobacter capsulatus. J Mol Biol 237: 622–640
Chekounova E, Voronetskaya V, Papenbrock J, Grimm B and Beck CF (2001) Characterization of Chlamydomonas mutants defective in the H subunit of Mg-chelatase. Mol Genet Genom 266: 363–373
Chew AG and Bryant DA (2007)Characterization of a plant-like protochlorophyllide a divinyl reductase in green sulfur bacteria. J Biol Chem 282: 2967–2975
Davison PA, Schubert HL, Reid JD, Iorg CD, Heroux A, Hill CP and Hunter CN (2005) Structural and biochemical characterization of Gun4 suggests a mechanism for its role in chlorophyll biosynthesis. Biochemistry 44: 7603–7012
Eckhardt U, Grimm B and Hörtensteiner S (2004) Recent advances in chlorophyll biosynthesis and breakdown in higher plants. Plant Mol Biol 56: 1–14
Eichacker LA, Helfrich M, Rüdiger W and Müller B (1996) Stabilization of chlorophyll a-binding apoproteins P700, CP47, CP43, D2, and D1 by chlorophyll a or Zn-pheophytin a. J Biol Chem 271: 32174–32179
Fodje MN, Hansson A, Hansson M, Olsen JG, Gough S, Willows RD and Al-Karadaghi S (2001) Interplay between an AAA module and an integrin I domain may regulate the function of magnesium chelatase. J Mol Biol 311: 111–122
Fusada N, Masuda T, Kuroda H, Shimada H, Ohta H and Takamiya K (2005) Identification of a novel cis-element exhibiting cytokinin-dependent protein binding in vitro in the 5’-region of NADPH-protochlorophyllide oxidoreductase gene in cucumber. Plant Mol Biol 59: 631–645
Gibson LCD, Willows RD, Kannangara CG, von Wettstein D and Hunter CN (1995) Magnesium-protoporphyrin chelatase of Rhodobacter sphaeroides: Reconstitution of activity by combining the products of the bchH, -I, and -D genes expressed in Escherichia coli. Biochemistry 92: 1941–1944
Gibson LCD, Marrison JL, Leech RM, Jensen PE, Bassham DC, Gibson M and Hunter CN (1996) A putative Mg chelatase subunit from Arabidopsis thaliana cv C24. Plant Physiol 111: 61–71
Gough SP, Petersen BO, Duus JO (2000) Anaerobic chlorophyll isocyclic ring formation in Rhodobacter capsulatus requires a cobalamin cofactor. Proc Natl Acad Sci USA 97: 6908–6913
Gräfe S, Saluz HP, Grimm B and Hänel F (1999) Mg-chelatase of tobacco: the role of the subunit CHL D in the chelation step of protoporphyrin IX. Proc Natl Acad Sci USA 96: 1941–1946
Grimm, B., Porra R, Rüdiger, W and Scheer H. (2006) Chlorophylls and Bacteriochlorophylls: Biochemistry, Biophysics, Functions and Applications Series: Advances in Photosynthesis and Respiration, Vol.25. Springer, Dordrecht
Hansson A, Kannangara CG, von Wettstein D and Hansson M (1999) Molecular basis for semidominance of missense mutations in the XANTHA-H (42-kDa) subunit of magnesium chelatase. Proc Natl Acad Sci USA 96: 1744–1749
Hansson A, Willows RD, Roberts TH and Hansson M (2002) Three semidominant barley mutants with single amino acid substitutions in the smallest magnesium chelatase subunit form defective AAA+ hexamers. Proc Natl Acad Sci USA 99: 13944–13949
He ZH, Li J, Sundqvist C and Timko MP (1994) Leaf developmental age controls expression of genes encoding enzymes of chlorophyll and heme biosynthesis in pea (Pisum sativum L.). Plant Physiol 106: 537–546
Hendry GAF, Houghton JD and Brown SB (1987) Chlorophyll degradation. A biological enigma. New Phytol 107: 255–302
Hinchigeri SB, Hundle B and Richards WR (1997) Demonstration that the BchH protein of Rhodobacter capsulatus activates S-adenosyl-L-methionine:magnesium protoporphyrin IX methyltransferase. FEBS Lett 407: 337–342
Hiriart J-B, Lehto K, Tyystjärvi, Junttila T and Aro E-M (2002) Suppression of a key gene involved in chlorophyll biosynthesis by means of virus-inducing gene silencing. Plant Mol Biol 50: 213–224
Horn R, Grundmann G and Paulsen H (2007) Consecutive binding of chlorophylls a and b during the assembly in vitro of light-harvesting chlorophyll-a/b protein (LHCIIb)J Mol Biol 366: 1045–1054
Ikegami A, Yoshimura N, Motohashi K, Takahashi S, Romano PG, Hisabori T, Takamiya K and Masuda T (2007) The CHLI1 subunit of Arabidopsis thaliana magnesium chelatase is a target protein of the chloroplast thioredoxin. J Biol Chem 282: 19282–19291
Ito H, Yokono M, Tanaka R and Tanaka A (2008) Identification of a novel vinyl reductase gene essential for the biosynthesis of monovinyl chlorophyll in synechocystis sp. PCC6803. J Biol Chem 283: 9002–9011
Jensen PE, Gibson LCD, Henningsen KW and Hunter CN (1996a) Expression of the chlI, chlD, and chlH genes from the cyanobacterium Synechocystis PCC6803 in Escherichia coli and demonstration that the three cognate proteins are required for magnesium-protoporphyrin chelatase activity. J Biol Chem 271: 16662–16667
Jensen PE, Willows RD, Petersen BL, Vothknecht UC, Stummann BM, Kannangara CG, von Wettstein D and Henningsen KW (1996b) Structural genes for Mg-chelatase subunits in barley: Xantha-f, -g and -h. Mol Gen Genet 250: 383–394
Jensen PE, Gibson LCD and Hunter CN (1999a) ATPase activity associated with the magnesium-protoporphyrin IX chelatase enzyme of Synechocystis PCC6803: evidence for ATP hydrolysis during Mg2+ insertion, and the MgATP-dependent interaction of the ChlI and ChlD subunits. Biochem J 339: 127–134
Jensen PE, Gibson LC, Shephard F, Smith V and Hunter CN (1999b) Introduction of a new branchpoint in tetrapyrrole biosynthesis in Escherichia coli by co-expression of genes encoding the chlorophyll-specific enzymes magnesium chelatase and magnesium protoporphyrin methyltransferase. FEBS Lett 455: 349–354
Jensen PE, Reid JD and Hunter CN (2000) Modification of cysteine residues in the ChlI and ChlH subunits of magnesium chelatase results in enzyme inactivation. Biochem J 352: 435–441
Jung S (2004) Effect of chlorophyll reduction in Arabidopsis thaliana by methyl jasmonate or norflurazon on antioxidant systems. Plant Physiol Biochem 42: 225–231
Jung KH, Hur J, Ryu CH, Choi Y, Chung YY, Miyao A, Hirochika H and An G (2003) Characterization of a rice chlorophyll-deficient mutant using the T-DNA gene-trap system. Plant Cell Physiol 44: 463–472.
Kannangara CG, Vothknecht UC, Hansson M and von Wettstein D (1997) Magnesium chelatase: association with ribosomes and mutant complementation studies identify barley subunit Xantha-G as a functional counterpart of Rhodobacter subunit BchD. Mol Gen Genet 254: 85–92
Koussevitzky S, Nott A, Mockler TC, Hong F, Sachetto-Martins G, Surpin M, Lim J, Mittler R and, Chory J (2007) Signals from chloroplasts converge to regulate nuclear gene expression. Science 316: 715–719
Koncz C, Mayerhofer R, Koncz-Kalman Z, Nawrath C, Reiss B, Redei GP and Schell J (1990) Isolation of a gene encoding a novel chloroplast protein by T-DNA tagging in Arabidopsis thaliana. EMBO J 9: 1337–1346
Kropat J, Oster U, Rudiger W and Beck CF (1997) Chlorophyll precursors are signals of chloroplast origin involved in light induction of nuclear heat-shock genes. Proc Natl Acad Sci USA 94: 14168–14172
Kruse E, Mock HP and Grimm B (1997) Isolation and characterisation of tobacco ( Nicotiana tabacum) cDNA clones encoding proteins involved in magnesium chelation into protoporphyrin IX. Plant Mol Biol 35: 1053–056
Kusnetsov V, Herrmann RG, Kulaeva ON and Oelmüller R (1998) Cytokinin stimulates and abscisic acid inhibits greening of etiolated Lupinus luteus cotyledons by affecting the expression of the light-sensitive protochlorophyllide oxidoreductase. Mol Gen Genet 259: 21–28
Lake V and Willows RD (2003) Rapid extraction of RNA and analysis of transcript levels in Chlamydomonas reinhardtii using real-time RT-PCR: magnesium chelatase chlH, chlD and chlI gene expression. Photosynth Res 77: 69–76
Larkin RM, Alonso JM, Ecker JR, Chory J (2003) GUN4, a regulator of chlorophyll synthesis and intracellular signaling. Science 299: 902–906
Luo M, Weinstein JD and Walker CJ (1999) Magnesium chelatase subunit D from pea: Characterization of the cDNA, heterologous expression of an enzymatically active protein and immunoassay of the native protein. Plant Mol Biol 41: 721–731
McCormac AC and Terry MJ (2002) Light-signalling pathways leading to the co-ordinated expression of HEMA1 and Lhcb during chloroplast development in Arabidopsis thaliana. Plant J 32: 549–559
McCormac AC and Terry MJ (2002) Loss of nuclear gene expression during the phytochrome A-mediated far-red block of greening response. Plant Physiol 130: 402–414
Melkozernov AN, Barber J and Blankenship RE (2006) Light harvesting in photosystem I supercomplexes. Biochemistry 45: 331–345
Minamizaki K, Mizoguchi T, Goto T, Tamiaki H and Fujita Y (2008) Identification of two homologous genes, chlAI and chlAII, that are differentially involved in isocyclic ring formation of chlorophyll a in the cyanobacterium Synechocystis sp. PCC 6803. J Biol Chem 283: 2684–2692
Mochizuki N, Brusslan JA, Larkin R, Nagatani A and Chory J (2000) Arabidopsis genomes uncoupled 5 (GUN5) mutant reveals the involvement of Mg-chelatase H subunit in plastid-to-nucleus signal transduction. Proc Natl Acad Sci USA 98: 2053–2058
Mohanty S, Grimm B and Tripathy BC (2006) Light and dark modulation of chlorophyll biosynthetic genes in response to temperature. Planta 224: 692–699
Moseley J, Quinn J, Eriksson M and Merchant S (2000) The Crd1 gene encodes a putative di-iron enzyme required for photosystem I accumulation in copper deficiency and hypoxia in Chlamydomonas reinhardtii. EMBO J 19: 2139–2151
Moseley JL, Page MD, Alder NP, Eriksson M, Quinn J, Soto F, Theg SM, Hippler M and Merchant S. (2002) Reciprocal expression of two candidate di-iron enzymes affecting photosystem I and light-harvesting complex accumulation. Plant Cell 14: 673–688
Moser J, Schubert WD, Beier V, Bringemeier I, Jahn D and Heinz DW (2001) V-shaped structure of glutamyl-tRNA reductase, the first enzyme of tRNA-dependent tetrapyrrole biosynthesis. EMBO J 20: 6583–6890
Moulin M and Smith AG (2005) Regulation of tetrapyrrole biosynthesis in higher plants. Biochem Soc Trans 33: 737–742
Nagata, N, Tanaka, R, Satoh, S, and Tanaka A (2005) Identification of a vinyl reductase gene for chlorophyll synthesis in Arabidosis thaliana and implications for the evolution of prochlorococcus species. The Plant Cell 17: 233–240
Nakayama M, Masuda T, Bando T, Yamagata H, Ohta H and Takamiya K-i (1998) Cloning and expression of the soybean chlH gene encoding a subunit of Mg-chelatase and localization of the Mg 2+ concentration-dependent ChlH protein within the chloroplast. Plant Cell Physiol 39: 275–284
Nott A, Jung HS, Koussevitzky S and Chory J (2006) ÂPlastid-to-nucleus retrograde signaling. Annu Rev Plant Biol 57: 739–759
Osanai T, Imashimizu M, Seki A, Sato S, Tabata S, Ikeuchi M and Tanaka K (2007) An H subunit of Mg-chelatase ChlH represses transcriptional activity of a sigma factor SigE by protein–protein interaction. Poster on 7th International Conference on Tetrapyrrole Photoreceptors in Photosynthetic Organisms, Kyoto, Dec 9–14, 2007
Ouchane S, Steunou AS, Picaud M and Astier C (2004) Aerobic and anaerobic Mgprotoporphyrin monomethyl ester cyclases in purple bacteria: a strategy adopted to bypass the repressive oxygen control system. J Biol Chem 279: 6385–6394
Papenbrock J and Grimm B (2001) Regulatory network of tetrapyrrole biosynthesis – studies for intracellular signaling involved in metabolic and developmental control of plastids. Planta 213: 667–681
Papenbrock J, Gräfe S, Kruse E, Hänel F and Grimm B (1997) Mgchelatase of tobacco: Identification of a Chl D cDNA sequence encoding a third subunit, analysis of the interaction of the three subunits with the yeast two-hybrid system, and reconstitution of the enzyme activity by co-expression of recombinant CHL D, CHL H and CHL I. Plant J 12: 981–990
Papenbrock J, Mock HP, Kruse E and Grimm B (1999) Expression studies in tetrapyrrole biosynthesis – inverse maxima of magnesium chelatase and ferrochelatase. Planta 208: 264–273
Papenbrock J, Mock H-P, Tanaka R, Kruse E and Grimm B (2000a) Role of magnesium chelatase activity in the early steps of the tetrapyrrole biosynthetic pathway. Plant ÂPhysiol 122: 1161–1169
Papenbrock J, Pfündel E, Mock H-P and Grimm B (2000b) Decreased and increased expression of the subunit CHL I diminishes Mg chelatase activity and reduces chlorophyll synthesis in transgenic tobacco plants. Plant J 22: 155–164
Pesaresi P, Schneider A, Kleine T and Leister D (2007) Interorganellar communication. Curr Opin Plant Biol 10: 600–606
Petersen BL, Jensen PE, Gibson LC, Stummann BM, Hunter CN and Henningsen KW (1998) Reconstitution of an active magnesium chelatase enzyme complex from the bchI, -D, and -H gene products of the green sulfur bacterium Chlorobium vibrioforme expressed in Escherichia coli. J Bacteriol 180: 699–704
Pinta V, Picaud M, Reiss-Husson F and Astier C (2002) Rubrivivax gelatinosus acsF (previously orf358) codes for a conserved, putative binuclear-iron-cluster-containing protein involved in aerobic oxidative cyclization of Mg-protoporphyrin IX monomethylester. J Bacteriol 184: 746–753
Plumley FG and Schmidt GW (1987) Reconstitution of chlorophyll a/b light-harvesting complexes: Xanthophyll-dependent assembly and energy transfer. Proc Natl Acad Sci USA 84: 146–150
Pontier D, Albrieux C, Joyard J, Lagrange T and Block MA (2007) Knock-out of the magnesium protoporphyrin IX methyltransferase gene in Arabidopsis. Effects on chloroplast development and on chloroplast-to-nucleus signaling. J Biol Chem 282: 2297–2304
Pöpperl G, Oster U, Blos I and Rüdiger W (1997) Magnesium chelatase of Hordeum vulgare L is not activated by light but inhibited by pheophorbide <http://apps.Âisiknowledge.com/full_record.do?product=UA&search_mode=GeneralSearch&qid=8&SID=R2CGeb8opLMLLAenNmG&page=5&doc=42&colname=WOS&cacheurlFromRightClick=no>. Z Naturf 52: 144–152
Porra RJ, Schäfer W, Katheder I and Scheer H (1995) The derivation of the oxygen atoms of the 13´-oxo and 3-acetyl groups of bacteriochlorophyll a from water in Rhodobacter sphaeroides cells adapting from respiratory to photosynthetic conditions: evidence for an anaerobic pathway for the formation of isocyclic ring E. FEBS Lett 371: 21–24
Rebeiz C, Kollosov, V.L, Briskin D, and Gawienowski M (2003) Chloroplast biogenesis: chlorophyll biosynthetic heterogeneity, multiple biosynthetic, routes and biological spin-offs. In Nalwa HS (ed) Handbook of Phtochemistry and Photobiology, Vol. 4. American Scientific Publishers, Los Angeles, pp. 183–247
Reinhold T, Alawady A, Grimm B, Beran KC, Jahns P, Conrath U, Bauer J, Reiser J, Melzer M, Jeblick W and Neuhaus HE (2007) Limitation of nocturnal import of ATP into Arabidopsis chloroplasts leads to photooxidative damage. Plant J 50: 293–304
Rissler HM, Collakova E, DellaPenna D, Whelan J and Pogson BJ (2002) Chlorophyll biosynthesis. Expression of a second chl I gene of magnesium chelatase in Arabidopsis supports only limited chlorophyll synthesis. Plant Physiol 128: 770–779
Rodermel S and Park S (2003) Pathways of intracellular communication: tetrapyrroles and plastid-to-nucleus signaling. Bioessays 25: 631–636
Ruckle ME, DeMarco SM and Larkin RM (2007) Plastid signals remodel light signaling networks and are essential for efficient chloroplast biogenesis in Arabidopsis. Plant Cell 19: 3944–3960
Saenger W, Jordan P and Krauss N (2002) The assembly of protein subunits and cofactors in photosystem I. Curr Opin Struct Biol 12: 244–254
Shen YY, Wang XF, Wu FQ, Du SY, Cao Z, Shang Y, Wang XL, Peng CC, Yu XC, Zhu SY, Fan RC, Xu YH and Zhang DP (2006) The Mg-chelatase H subunit is an abscisic acid receptor. Nature 443: 823–826
Shepherd M, McLean S and Hunter CN (2005) Kinetic basis for linking the first two enzymes of chlorophyll biosynthesis. FEBS J 272: 4532–4539
Sirijovski N, Lundqvist J, Rosenbäck M, Elmlund H, Al-Karadaghi S, Willows RD and Hansson M (2008) Substrate-binding model of the chlorophyll biosynthetic magnesium chelatase BchH subunit. J Biol Chem 283: 11652–11660
Soldatova O, Apchelimov A, Radukina N, Ezhova T, ÂShestakov S, Ziemann V, Hedtke B and Grimm B (2005) An Arabidopsis mutant that is resistant to the protoporphyrinogen oxidase inhibitor acifluorfen shows regulatory changes in tetrapyrrole biosynthesis. Mol Genet Genom 273: 311–318
Sood S, Gupta V and Tripathy BC (2005) Photoregulation of the greening process of wheat seedlings grown in red light. Plant Mol Biol 59: 269–287
Surpin M, Larkin RM and Chory J (2002) Signal transduction between the chloroplast and the nucleus. Plant Cell 14: S327–338
Susek RE, Ausubel FM and Chory J (1993) Signal transduction mutants of Arabidopsis uncouple nuclear CAB and RBCS gene expression from chloroplast development. Cell 74: 787–799
Suzuki JY and Bauer CE (1995) Altered monovinyl and divinyl protochlorophyllide pools in bchJ mutants of Rhodobacter capsulatus. Possible monovinyl substrate discrimination of light-independent protochlorophyllide reductase. J Biol Chem 270: 3732–3740
Tanaka R, Tanaka A (2007) Tetrapyrrole biosynthesis in higher plants. Annu Rev Plant Biol 58: 321–346
Tripathy BC and Rebeiz CA (1988) Chloroplast biogenesis 60: conversion of divinyl protochlorophyllide to monovinyl protochlorophyllide in green(ing) barley, a dark monovinyl/light divinyl plant species. Plant Physiol 87: 89–94
Verdecia MA, Larkin RM, Ferrer JL, Riek R, Chory J and Noel JP (2005) Structure of the Mg-chelatase cofactor GUN4 reveals a novel hand-shaped fold for porphyrin binding. PLoS Biol 3: e151.
von Gromoff E, Alawady A, Meinecke L, Grimm B and Beck CF (2008) Heme, a plastid-derived regulator of nuclear gene expression in Chlamydomonas. Plant Cell 20: 552–567
Walker CJ and Weinstein JD (1991) Further characterization of the magnesium chelatase in isolated developing cucumber chloroplasts : substrate specificity, regulation, intactness, and ATP requirements. Plant Physiol 95: 1189–1196
Walker CJ and Willows RD (1997) Mechanism and regulation of Mg-chelatase. Biochem J 327: 321–333
Walker CJ, Mansfield KE, Rezzano IN, Hanamoto CM, Smith KM and Castelfranco PA (1988) The magnesium-protoporphyrin IX (oxidative) cyclase system. Studies on the mechanism and specificity of the reaction sequence. Biochem J 255: 685–692
Wilde A, Mikolajczyk S, Alawady A, Lokstein H and Grimm B (2004) The gun4 gene is essential for cyanobacterial porphyrin metabolism. FEBS Lett 571: 119–123
Willows RD (2003) Biosynthesis of chlorophylls from protoporphyrin IX. Nat Prod Rep 20: 327–341
Willows RD and Beale SI (1998) Heterologous expression of the Rhodobacter capsulatus BchI, -D, and -H genes that encode magnesium chelatase subunits and characterization of the reconstituted enzyme. J Biol Chem 273: 34206–34213
Willows RD, Gibson LCD, Kanangara CG, Hunter CN and von Wettstein D (1996) Three separate proteins constitute the magnesium chelatase of Rhodobacter sphaeroides. Eur J Biochem 235: 438–445
Yaronskaya E, Vershilovskaya I, Poers Y, Alawady AE, Averina N and Grimm B (2006) Cytokinin effects on tetrapyrrole biosynthesis and photosynthetic activity in barley seedlings. Planta 224: 700–709
Zheng CC, Porat R, Lu P and O’Neill SD (1998) PNZIP is a novel mesophyll-specific cDNA that is regulated by phytochrome and the circadian rhythm and encodes a protein with a leucine zipper motif. Plant Physiol 116: 27–35
Zhang H, Li J, Yoo JH, Yoo SC, Cho SH, Koh HJ, Seo HS and Paek NC (2006) Rice Chlorina-1 and Chlorina-9 encode ChlD and ChlI subunits of Mg-chelatase, a key enzyme for chlorophyll synthesis and chloroplast development. Plant Mol Biol 62: 325–337
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2010 Springer Science+Business Media B.V.
About this chapter
Cite this chapter
Grimm, B. (2010). Chapter 3 Control of the Metabolic Flow in Tetrapyrrole Biosynthesis: Regulation of Expression and Activity of Enzymes in the Mg Branch of Tetrapyrrole Biosynthesis. In: Rebeiz, C.A., et al. The Chloroplast. Advances in Photosynthesis and Respiration, vol 31. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-8531-3_3
Download citation
DOI: https://doi.org/10.1007/978-90-481-8531-3_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-8530-6
Online ISBN: 978-90-481-8531-3
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)