Flashcards in Selenium Deck (15)
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1
what are the 4 structures of selenium
1. selenomethionine
2. selenocyteine
3. selenite
4. selenate
2
best source of selenium
seafood
3
T/F cancer rates are higher in people who live in areas that have low soil selenium concentrations
T
4
what enhances the absorption of selenium
vitamin A,C,E
glutathione
5
what carries 60% of selenium in plasma as selenocysteine
selenoprotein P
6
what can be used as an indicator of selenium def.
selenoprotein P
7
selenide can be methylated and excreted in urine as
methyl selenide
8
selenocysteine synthesized by 2 enzymes
1. selenophophate synthetase
2. slenocysteine synthase
9
selenium is incorporated into selenoproteins as _____ via
selenocysteine via selenocysteine tRNA
10
what two proteins does selenocysteine tRNA require
1. SBP2
2. EFsec
11
___ and __ account for 90% of selenium in the plasma
GPX3 and selenoprotein P
12
thioredoxin reductase is used in synthesis of _____ for DNA synthesis
deoxyribonucleotides
13
_____ is found in cytosol for cardiac and skeletal muscle
selenoprotein W
14
_____ observed in miners and people who consume selenium from supplements
selenosis
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