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HomoloGene:80217. Gene conserved in Eukaryota Download , Links
Genes identified as putative homologs of one another during the construction of HomoloGene.

Proteins used in sequence comparisons and their conserved domain architectures.

   RIB4,  S.cerevisiae
169 aa
   KLLA0E01959g,  K.lactis
167 aa
   COS1,  A.thaliana
227 aa
   Os04g0497400,  O.sativa
221 aa

Protein Alignments
Protein multiple alignment, pairwise similarity scores and evolutionary distances.

Show Multiple Alignment

Show Pairwise Alignment Scores

Pairwise alignments generated using BLAST
Regenerate Alignments

Articles associated with genes and sequences of this homology group.

Conserved Domains
Conserved Domains from CDD found in protein sequences by rpsblast searching.
Lumazine_synthase-like (cl00317)
  This superfamily contains lumazine synthase (6,7-dimethyl-8-ribityllumazine synthase, LS) and riboflavin synthase (RS). Both enzymes play important roles in the riboflavin biosynthetic pathway. Riboflavin is the precursor of flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) which are essential cofactors for the catalysis of a wide range of redox reactions. These cofactors are also involved in many other processes involving DNA repair, circadian time-keeping, light sensing, and bioluminescence. Riboflavin is biosynthesized in plants, fungi and certain microorganisms; as animals lack the necessary enzymes to produce this vitamin, they acquire it from dietary sources. In the final steps of the riboflavin biosynthetic pathway, LS catalyzes the condensation of the 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione with 3,4-dihydroxy- 2-butanone-4-phosphate to release water, inorganic phosphate and 6,7-dimethyl-8-ribityllumazine (DMRL), and RS catalyzes a dismutation of DMRL which yields riboflavin and 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione. In the latter reaction, a four-carbon moiety is transferred between two DMRL molecules serving as donor and acceptor, respectively. Both the LS and RS catalyzed reactions are thermodynamically irreversible and can proceed in the absence of a catalyst. In bacteria and eukaryotes, there are two types of LS: type-I LS forms homo-pentamers or icosahedrally arranged dodecamers of pentamers, type-II LS forms decamers (dimers of pentamers). In archaea LSs and RSs appear to have diverged early in the evolution of archaea from a common ancestor.

Links to UniGene entries found by comparing the homologous proteins against the transcript database.

Eudicotyledons - eudicots (39 transcripts, 34 species)
Liliopsida - monocots (13 transcripts, 8 species)
Coniferopsida - conifers (5 transcripts, 3 species)
Bryopsida - mosses (2 transcripts, 1 species)

Chlorophyceae - green algae (2 transcripts, 2 species)

Hydrozoa - hydrozoans (1 transcript, 1 species)




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