RIBA2

Probable bifunctional riboflavin biosynthesis protein RIBA 2, chloroplastic

553 amino acids

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).

In the C-terminal section; belongs to the GTP cyclohydrolase II family.

59.59 kDa

MASISPTSSSVAALRGHPVQFVKGGAVSKEAKGSISFSPVANSNNANVKFTGLRVAASLKRDGAFPGDGYSGNDNTVLPKSTSVRGQDYPTADSVLPTESIIVPEISNAGLKCVADMFSDEDKDTEQDLDSPTEGFSSISEAIKDIQQGKLVIVVDDESRENEGDLIMAASLVTPEAMAFVVRYGTGIVCVSMKEEDLERLNLPLMVATKENEEKLCTAFTVTVDAKEGTTTGVSAKDRAKTVMTLASPDSKPEDFNRPGHIFPLKYREGGVLKRAGHTEASVDLAMLAGLPPAAVLCEIVDEDGSMARLPKLRVFAERENLKIVSIADLIRYRRKRDRLVERSSVARLPLRWGNVRAYCYRSVIDGIEHIAMVKGEIGDGQGVLVRVHSECLTGDIFGSARCDCGDQLAMAMEMIEKAGRGVLVYLRGHEGRGIGLGHKLRAYNLQDDGRDTVEANEDLGLPVDSREYGIGAQILRDLGVRSMKLMTNNPAKYGGLKGYGLSIVGRVPLVTPITSENRRYLETKRTKMGHVYGLANGQASHQTGSNGAKGEH

RIBA2

Monofunctional riboflavin biosynthesis protein RIBA 2, chloroplastic

476 amino acids

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.

In the C-terminal section; belongs to the GTP cyclohydrolase II family.

52.2 kDa

MASLTLRCDSTHLLPSRDVVKGTKPFGTSLVYPRIISKKFNVRMRVIPEEGDVFSSSKSNGSSMGIELQPDLVSFGTLAAEMIPTTMDSPEVEDEEFDLDRPTDGFASIPQAIEDIRHGKMVVVVDDEDRENEGDLIMAASLATPEAMAFVVKHGTGIVCVSMKGEDLERLELPLMVTRKDNEEKLRTAFTVSVDAKKGTSTGVSARDRAQTILTLASKDSKPEDFNRPGHIFPLRYREGGVLKRAGHTEASVDLTVLAGLEPVSVLCEIVDDDGSMARLPRLRQFAQENNLKLISIADLIRYRRKRERLVEFTAVAPIPTMWGPFKAHCFKSLLDGVEHIAMVKGEIGDGKDILVRVHAECITDDIFGNSSGGKQLAIAMRLIEENGRGVFVYLRGPESKGIDLSHKPRTYNTNSDQAEGVSFPVASREYGIGAQILRDLGVREMKVMTNNPAHYVGLKGYGLSISGKVPLITTP