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Ribulose 1,5-bisphosphate
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<p>Ribulose 1,5-bisphosphate (RuBP) is an <a href="/facts/Organic_substance/gqCNaN45">organic substance</a> that is involved in <a href="/facts/Photosynthesis/TMV7w693">photosynthesis</a>, notably as the principal <a href="/facts/Carbon_fixation/JqvfmCdH">CO2 acceptor</a> in plants.: 2 It is a colourless anion, a double <a href="/facts/Phosphate_ester/u4U9GS4z">phosphate ester</a> of the <a href="/facts/Ketopentose/BScECY9L">ketopentose</a> (<a href="/facts/Ketone/BqQXpLo4">ketone</a>-containing sugar with five <a href="/facts/Carbon/ukrgQexo">carbon</a> atoms) called <a href="/facts/Ribulose/ClP0dAoJ">ribulose</a>. Salts of RuBP can be isolated, but its crucial biological function happens in solution. RuBP occurs not only in plants but in all <a href="/facts/Domain_(biology)/RpP6V7n6">domains of life</a>, including <a href="/facts/Archaea/Adxh0aHw">Archaea</a>, <a href="/facts/Bacteria/wC8xSCsU">Bacteria</a>, and <a href="/facts/Eukarya/SkwyPLMA">Eukarya</a>. </p>