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RIBA2

Gene
RIBA2
Protein
Probable bifunctional riboflavin biosynthesis protein RIBA 2, chloroplastic
Organism
Oryza sativa subsp. japonica
Length
553 amino acids
Function
Involved in riboflavin biosynthesis. Catalyzes both the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate and the conversion of GTP to 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate (DARP), formate and pyrophosphate (By similarity).
Similarity
In the C-terminal section; belongs to the GTP cyclohydrolase II family.
Mass
59.59 kDa
Sequence
MASISPTSSSVAALRGHPVQFVKGGAVSKEAKGSISFSPVANSNNANVKFTGLRVAASLKRDGAFPGDGYSGNDNTVLPKSTSVRGQDYPTADSVLPTESIIVPEISNAGLKCVADMFSDEDKDTEQDLDSPTEGFSSISEAIKDIQQGKLVIVVDDESRENEGDLIMAASLVTPEAMAFVVRYGTGIVCVSMKEEDLERLNLPLMVATKENEEKLCTAFTVTVDAKEGTTTGVSAKDRAKTVMTLASPDSKPEDFNRPGHIFPLKYREGGVLKRAGHTEASVDLAMLAGLPPAAVLCEIVDEDGSMARLPKLRVFAERENLKIVSIADLIRYRRKRDRLVERSSVARLPLRWGNVRAYCYRSVIDGIEHIAMVKGEIGDGQGVLVRVHSECLTGDIFGSARCDCGDQLAMAMEMIEKAGRGVLVYLRGHEGRGIGLGHKLRAYNLQDDGRDTVEANEDLGLPVDSREYGIGAQILRDLGVRSMKLMTNNPAKYGGLKGYGLSIVGRVPLVTPITSENRRYLETKRTKMGHVYGLANGQASHQTGSNGAKGEH

Gene
RIBA2
Protein
Monofunctional riboflavin biosynthesis protein RIBA 2, chloroplastic
Organism
Arabidopsis thaliana
Length
476 amino acids
Function
Involved in riboflavin biosynthesis. Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate. RIBA2 and RIBA3 together are not able to complement the loss of function of RIBA1.
Similarity
In the C-terminal section; belongs to the GTP cyclohydrolase II family.
Mass
52.2 kDa
Sequence
MASLTLRCDSTHLLPSRDVVKGTKPFGTSLVYPRIISKKFNVRMRVIPEEGDVFSSSKSNGSSMGIELQPDLVSFGTLAAEMIPTTMDSPEVEDEEFDLDRPTDGFASIPQAIEDIRHGKMVVVVDDEDRENEGDLIMAASLATPEAMAFVVKHGTGIVCVSMKGEDLERLELPLMVTRKDNEEKLRTAFTVSVDAKKGTSTGVSARDRAQTILTLASKDSKPEDFNRPGHIFPLRYREGGVLKRAGHTEASVDLTVLAGLEPVSVLCEIVDDDGSMARLPRLRQFAQENNLKLISIADLIRYRRKRERLVEFTAVAPIPTMWGPFKAHCFKSLLDGVEHIAMVKGEIGDGKDILVRVHAECITDDIFGNSSGGKQLAIAMRLIEENGRGVFVYLRGPESKGIDLSHKPRTYNTNSDQAEGVSFPVASREYGIGAQILRDLGVREMKVMTNNPAHYVGLKGYGLSISGKVPLITTP