Difference between revisions of "Part:BBa K1998001"

Revision as of 21:49, 18 October 2016

YCF54 - ChlM

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
COMPATIBLE WITH RFC[12]
21
INCOMPATIBLE WITH RFC[21]
Illegal BglII site found at 912
Illegal BamHI site found at 316
23
COMPATIBLE WITH RFC[23]
25
COMPATIBLE WITH RFC[25]
1000
INCOMPATIBLE WITH RFC[1000]
Illegal BsaI site found at 478

Overview

This composite part is made up of the genes YCF54 and ChlM. They come from the chlorophyll biosynthetic pathway of Chlamydomonas reinhardtii. The two genes Mg-protoporphyrin IX monomethyl ester (oxidative) cyclase (YCF54) and Magnesium-protoporphyrin O-methyltransferase (ChlM). When combined in Operon 3 of our chlorophyll biosynthetic pathway they are involved in converting protoporphyrin IX to protoin the presence of NADPH and O2.

Biology & Literature

These two genes within this part are used within an operon in the biosynthesis pathway. YCF54 works with the CTH1 gene and Plastocyanin within the oxidative cyclase pathway. It's interaction with other genes results in the catalysis of the biosynthesis pathway from Mg-protoporphyrin IX to Protochlorophyllide [1]. Deletion studies have detected the importance of YCF54 in maintaining levels of Mg-protoporphyrin IX methyl ester indicating that the YCF54 gene is critical to both the assembly and function of the cyclase complex [1].

The second gene in this part is ChlM. ChlM encodes for a magnesium protoporhyrin IX methytransferase. ChlM's role in the pathway is to methylate Mg-protoporphyrin IX which then aids the catalysis of Mg-cheltase [2]. This then facilitates the formation of the final protochlorophyllide. Involved in the second step of the pathway, the ChlM gene is involved in the transfer of a methyl group onto one of the rings of magnesium protoporphyrin which forms the magnesium prootoporhyrin IX monomethylester [3, 4].

[2] Alawady A, Reski R, Yaronskaya E, Grimm B. Cloning and expression of the tobacco CHLM sequence encoding Mg protoporphyrin IX methyltransferase and its interaction with Mg chelatase. Plant molecular biology. 2005 Mar 1;57(5):679-91.

[3] Shepherd M, McLean S, Hunter CN. Kinetic basis for linking the first two enzymes of chlorophyll biosynthesis. FEBS Journal. 2005 Sep 1;272(17):4532-9.

[4] Meinecke L, Alawady A, Schroda M, Willows R, Kobayashi MC, Niyogi KK, Grimm B, Beck CF. Chlorophyll-deficient mutants of Chlamydomonas reinhardtii that accumulate magnesium protoporphyrin IX. Plant molecular biology. 2010 Apr 1;72(6):643-58.

Protein information

YCF54
mass: 17.08kDa
sequence: MAPAAASADKATAAEYYALVCNAEWFFMDPQNESVAEQLREKVRFFKEQN KERDFFIVPNPKWLDAKFPEQAKQVKRPCVALVSTDKMWITFMKLRLDRV LKIDLKSMPASEVLAAGEALPDFKPDGKWTAPYARYTPGWWNVFLPNH

ChlM
mass: 30.45kDa sequence: MASEIAQTADVGSLTFAVGGVGAVVGLGALLVATDHQKRRSEQMKSFDGD EKEAVKDYFNTAGFERWRKIYGETDEVNKVQLDIRTGHAQTVDKVLRWVD EEGSVQGITVADCGCGTGSLAIQLALRGAAVSASDISAAMASEAEQRYQQ AVAAGQGKAPKVAPKFEALDLESVKGKYDTVTCLDVMIHYPQDKVDAMIT HLAGLSDRRLIISFAPKTLSYSILKRIGELFPGPSKATRAYLHREEDVEAALK RAGFKVTKREMTATSFYFSRLLEAIRE

References

[1] Hollingshead S, Kopečná J, Jackson PJ, Canniffe DP, Davison PA, Dickman MJ, Sobotka R, Hunter CN. Conserved chloroplast open-reading frame ycf54 is required for activity of the magnesium protoporphyrin monomethylester oxidative cyclase in Synechocystis PCC 6803. Journal of Biological Chemistry. 2012 Aug 10;287(33):27823-33.

[2]

@@ Line 21: / Line 21: @@
 These two genes within this part are used within an operon in the biosynthesis pathway. YCF54 works with the CTH1 gene and Plastocyanin within the oxidative cyclase pathway. It's interaction with other genes results in the catalysis of the biosynthesis pathway from Mg-protoporphyrin IX to Protochlorophyllide [1]. Deletion studies have detected the importance of YCF54 in maintaining levels of Mg-protoporphyrin IX methyl ester indicating that the YCF54 gene is critical to both the assembly and function of the cyclase complex [1].
+The second gene in this part is ChlM. ChlM encodes for a magnesium protoporhyrin IX methytransferase. ChlM's role in the pathway is to methylate Mg-protoporphyrin IX which then aids the catalysis of Mg-cheltase [2]. This then facilitates the formation of the final protochlorophyllide. Involved in the second step of the pathway, the ChlM gene is involved in the transfer of a methyl group onto one of the rings of magnesium protoporphyrin which forms the magnesium prootoporhyrin IX monomethylester [3, 4].
-ChlM methylates Mg-protoporphyrin IX, facilitating the highly-regulated catalysis of Mg-chelatase and creating the final protochlorophyllide.
+[2] Alawady A, Reski R, Yaronskaya E, Grimm B. Cloning and expression of the tobacco CHLM sequence encoding Mg protoporphyrin IX methyltransferase and its interaction with Mg chelatase. Plant molecular biology. 2005 Mar 1;57(5):679-91.
-ChlM methylates Mg-protoporphyrin IX, facilitating the highly-regulated catalysis of Mg-chelatase.
-The insertion of magnesium is the key component of the chlorophyll biosynthesis pathway.
-The plasmid is under the control of the lac promoter.
+[3] Shepherd M, McLean S, Hunter CN. Kinetic basis for linking the first two enzymes of chlorophyll biosynthesis. FEBS Journal. 2005 Sep 1;272(17):4532-9.
+[4] Meinecke L, Alawady A, Schroda M, Willows R, Kobayashi MC, Niyogi KK, Grimm B, Beck CF. Chlorophyll-deficient mutants of Chlamydomonas reinhardtii that accumulate magnesium protoporphyrin IX. Plant molecular biology. 2010 Apr 1;72(6):643-58.
 ===Protein information===