Part:BBa_K1998000
Mg-Chelatase Plasmid
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12INCOMPATIBLE WITH RFC[12]Illegal NheI site found at 4753
Illegal NotI site found at 2666
Illegal NotI site found at 4213 - 21INCOMPATIBLE WITH RFC[21]Illegal BglII site found at 439
Illegal BglII site found at 1095
Illegal BglII site found at 1290
Illegal BglII site found at 3371
Illegal BglII site found at 3898
Illegal BglII site found at 5755
Illegal BglII site found at 5863
Illegal BamHI site found at 487 - 23COMPATIBLE WITH RFC[23]
- 25INCOMPATIBLE WITH RFC[25]Illegal NgoMIV site found at 1946
Illegal NgoMIV site found at 2765
Illegal NgoMIV site found at 3307
Illegal NgoMIV site found at 7968
Illegal AgeI site found at 6853
Illegal AgeI site found at 6883
Illegal AgeI site found at 7777
Illegal AgeI site found at 7945
Illegal AgeI site found at 9463
Illegal AgeI site found at 9517
Illegal AgeI site found at 9736 - 1000INCOMPATIBLE WITH RFC[1000]Illegal BsaI.rc site found at 5553
Illegal BsaI.rc site found at 5709
Illegal BsaI.rc site found at 6330
Illegal BsaI.rc site found at 9862
Illegal SapI.rc site found at 7219
Illegal SapI.rc site found at 9792
Overview
This composite part is made up of various genes that form the first part of the chlorophyll biosynthesis pathway. The plasmid contains six genes. They are in the order of ChlI1, ChlD, Gun4, ChlI2, CTH1, followed by ChlH. At the beginning of each gene, a ribosome binding site can be found. Before the ChlH gene, a Plac is located. One can also be found at the beginning of the plasmid. The genes encode for Magnesium chelatase subunit H (ChlH), Magnesium chelatase subunit I (Chli1/Chli2), Magnesium chelatase subunit D (ChlD), Genomes uncoupled 4 (GUN4) and Copper target 1 protein (Cth1). These genes are involved in converting protoporphyrin IX to divinyl protochlorophyllide in the presence of NADPH and O2.
Biology & Literature
Genes ChlI1 and ChlI2 form a Mg-cheltase complex (Magnesium cheltase subunit I). This complex catalyses the insertion of magnesium ion into protoporphyrin IX to yield Mg-protoporphyrin IX by forming an ATP dependent hexameric ring complex and a complex with the ChlD subunit. This complex then acts on protoporphyrin. The GUN4 gene encodes genomes uncoupled 4. This is a tetrapyrrole-binding protein which controls the production of Mg-protoporhyrin IX. The CTH1 gene encodes for a copper target protein. It forms when oxygen and copper are present catalysing Mg-protoporphyrin IX mono methyl, which converts divinyl protochlorophyllide when NADPH and O2 are present. The last gene is ChlH. This gene encodes for the magnesium shelters subunit H. This acts as a chloroplast precursor, catalysing the first step in the chlorophyl biosynthesis pathway by insertion of an Mg2+ ion into protoporphyrin IX to generate Mg-protoporphyrin IX.
[] Adhikari, N.D., Froehlich, J.E., Strand, D.D., Buck, S.M., Kramer, D.M., Larkin, R.M. (2011) GUN4-Porphyrin Complexes Bind the ChlH/GUN5 Subunit of Mg-Chelatase and Promote Chlorophyll Biosynthesis in Arabidopsis. Plant Cell 23: 1449-1467.
Protein information
ChlI1
Mass: 39.96kDa
Sequence:
MAATEVKAAEGRTEKELGQARPIFPFTAIVGQDEMKLALILNVIDPKIGGVMIMGDRGTGKSTTIRALADLLPEMQVVANDPFNSDPTDPELMSEEVRNR
VKAGEQLPVSSKKIPMVDLPLGATEDRVCGTIDIEKALTEGVKAFEPGLLAKANRGILYVDEVNLLDDHLVDVLLDSAASGWNTVEREGISISHPARFIL
VGSGNPEEGELRPQLLDRFGMHAQIGTVKDPRLRVQIVSQRSTFDENPAAFRKDYEAGQMALTQRIVDARKLLKQGEVNYDFRVKISQICSDLNVDGIRG
DIVTNRAAKALAAFEGRTEVTPEDIYRVIPLCLRHRLRKDPLAEIDDGDRVREIFKQVFGME
ChlD
Mass: 63.84kDa
Sequence:
MRAMKVSEED SKGFDADVST RLARSYPLAA VVGQDNIKQA LLLGAVDTGL GGIAIAGRRG
TAKSIMARGL HALLPPIEVV EGSICNADPE DPRSWEAGLA EKYAGGPVKT KMRSAPFVQI
DGVNVVEREG ISISHPCRPL LIATYNPEEG PLREHLLDRI AIGLSADVPS TSDERVKAID
AAIRFQDKPQ DTIDDTAELT DALRTSVILA REYLKDVTIA PEQVTYIVEE ARRGGVQGHR
AELYAVKCAK ACAALEGRER VNKDDLRQAV QLVILPRATI LDQPPPEQEQ PPPPPPPPPP
PPPQDQMEDE DQEEKEDEKE EEEKENEDQD EPEIPQEFMF ESEGVIMDPS ILMFAQQQQR
AQGRSGRAKT LIFSDDRGRY IKPMLPKGDK VKRLAVDATL RAAAPYQKIR RQQAISEGKV
QRKVYVDKPD MRSKKLARKA GALVIFVVDA SGSMALNRMS AAKGACMRLL AESYTSRDQV
VMMVLITDGR ANVSLAKSNE DPEALKPDAP KPTADSLKDE VRDMAKKAAS AGINVLVIDT
ENKFVSTGFA EEISKAAQGK YYYLPNASDA AIAAAASGAM AAAKGGY
Gun4
Mass: 24.36kDa
Sequence:
MAMRVTVAAG KLDSVSLFGG DTASLMGGSQ TVEKKKSGKE AVMEVQLSST AGIDYTVLRD
HLANGEFREA EDETRALLIK LAGPEAVKRN WVYFTEVKNI SVTDFQTLDN LWKASSNNKF
GYSVQKEIWV QNQKRWPKFF KQIDWTQGEN NNYRKWPMEF IYSMDAPRGH LPLTNALRGT
QLFQAIMEHP AFEKSSTAKT LDQKAAEAAG RTQSLF
ChlI2
Mass: 39.56kDa
Sequence:
MPSTKAAKKP NFPFVKIQGQ EEMKLALLLN VVDPNIGGVL IMGDRGTAKS VAVRALVDML
PDIDVVEGDA FNSSPTDPKF MGPDTLQRFR NGEKLPTVRM RTPLVELPLG ATEDRICGTI
DIEKALTQGI KAYEPGLLAK ANRGILYVDE VNLLDDGLVD VVLDSSASGL NTVEREGVSI
VHPARFIMIG SGNPQEGELR PQLLDRFGMS VNVATLQDTK QRTQLVLDRL AYEADPDAFV
DSCKAEQTAL TDKLEAARQR LRSVKISEEL QILISDICSR LDVDGLRGDI VINRAAKALV
AFEGRTEVTT NDVERVISGC LNHRLRKDPL DPIDNGTKVA ILFKRMTDPE IMKREEEAKK
CTH1
Mass: 43.88kDa
Sequence:
MVAATAAPQE VEGFKVMRDG IKVASDETLL TPRFYTTDFD EMERLFSLEL NKNMDMEEFE
AMLNEFKLDY NQRHFVRNET FKEAAEKIQG PTRKIFIEFL ERSCTAEFSG FLLYKELGRR
LKATNPVVAE IFTLMSRDEA RHAGFLNKAM SDFNLALDLG FLTKNRKYTF FKPKFIFYAT
YLSEKIGYWR YISIYRHLQR NPDNQLYPLF EYFENWCQDE NRHGDFFTAV LKARPEMVND
WAAKLWSRFF CLSVYITMYL NDHQRDAFYS SLGLNTTQFN QHVIIETNKS TERIFPAVPD
VENPEFFRRM DLLVKYNAQL VNIGSMNLPS PIKAIMKAPI LERMVAEVFQ VFIMTPKESG
SYDLDANKTA LVY
ChlH
Mass:144.14
Sequence:
MCNVATGPRP PMTTFTGGNK GPAKQQVSLD LRDDGAGMFT STSPEMRRVV PDDVKGRVKV
KVVYVVLEAQ YQSAISAAVK NINAKNSKVC FEVVGYLLEE LRDQKNLDML KEDVASANIF
IGSLIFIEEL AEKIVEAVSP LREKLDACLI FPSMPAVMKL NKLGTFSMAQ LGQSKSVFSE
FIKSARKNND NFEEGLLKLV RTLPKVLKYL PSDKAQDAKN FVNSLQYWLG GNSDNLENLL
LNTVSNYVPA LKGVDFSVAE PTAYPDVGIW HPLASGMYED LKEYLNWYDT RKDMVFAKDA
PVIGLVLQRS HLVTGDEGHY SGVVAELESR GAKVIPVFAG GLDFSAPVKK FFYDPLGSGR
TFVDTVVSLT GFALVGGPAR QDAPKAIEAL KNLNVPYLVS LPLVFQTTEE WLDSELGVHP
VQVALQVALP ELDGAMEPIV FAGRDSNTGK SHSLPDRIAS LCARAVNWAN LRKKRNAEKK
LAVTVFSFPP DKGNVGTAAY LNVFGSIYRV LKNLQREGYD VGALPPSEED LIQSVLTQKE
AKFNSTDLHI AYKMKVDEYQ KLCPYAEALE ENWGKPPGTL NTNGQELLVY GRQYGNVFIG
VQPTFGYEGD PMRLLFSKSA SPHHGFAAYY TFLEKIFKAD AVLHFGTHGS LEFMPGKQVG
MSGVCYPDSL IGTIPNLYYY AANNPSEATI AKRRSYANTI SYLTPPAENA GLYKGLKELK
ELISSYQGMR ESGRAEQICA TIIETAKLCN LDRDVTLPDA DAKDLTMDMR DSVVGQVYRK
LMEIESRLLP CGLHVVGCPP TAEEAVATLV NIAELDRPDN NPPIKGMPGI LARAIGRDIE
SIYSGNNKGV LADVDQLQRI TEASRTCVRE FVKDRTGLNG RIGTNWITNL LKFTGFYVDP
WVRGLQNGEF ASANREELIT LFNYLEFCLT QVVKDNELGA LVEALNGQYV EPGPGGDPIR
NPNVLPTGKN IHALDPQSIP TQAALKSARL VVDRLLDRER DNNGGKYPET IALVLWGTDN
IKTYGESLAQ VMMMVGVKPV ADALGRVNKL EVIPLEELGR PRVDVVVNCS GVFRDLFVNQ
AVENSSWSDE SQLQEMYLKR KSYAFNSDRP GAGGEMQRDV FETAMKTVDV TFQNLDSSEI
SLTDVSHYFD SDPTKLVASL RNDGRTPNAY IADTTTANAQ VRTLGETVRL DARTKLLNPK
WYEGMLASGY EGVREIQKRM TNTMGWSATS GMVDNWVYDE ANSTFIEDAA MAERLMNTNP
NSFRKLVATF LEANGRGYWD AKPEQLERLR QLYMDVEDKI EGVE
References
None |