3500Ch25 - The Pentose Phosphate Pathway Is in all...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
The Pentose Phosphate Pathway Is in all organisms Produces NADPH for reductive biosynthesis Two Phases: Oxidative Non-oxidative
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Where? Cytoplasm Enzymes catalyze the same reactions observed in the regeneration of ribulose 5- phosphate in the Calvin cycle.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Pentose Phosphate Oxidative Phase – G-6-P is converted to ribose 5-phosphate Used to make RNA, DNA, NADH, FAD and Coenzyme A Non-oxidative phase inter-conversion of various sugars for biosynthesis or entry
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Formation of NADPH 2 molecules of NADPH are created in the conversion of G-6-P to ribulose 5-phosphate. Glucose 6-phosphate dehydrogenase Highly specific for NADP+ Km for NAD+ is ~1000x greater than NADP+ Three enzymes are required for this conversion A fourth enzyme is required to isomerize ribulose 5- phosphate to ribose-5 phosphate
Background image of page 6
Three enzymes required for conversion of G-6-P to ribulose 5-phosphate Oxidation – first NADPH molecule released Hydrolysis Oxidative decarboxylation – 2nd NADPH molecule and CO2 released.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Click to edit Master subtitle style 2 NADPH 1 CO2 For every molecule of G-6-P
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 38

3500Ch25 - The Pentose Phosphate Pathway Is in all...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online