<P> Bacteria in the gut flora can also convert K into vitamin K ( menaquinone ) . In addition , bacteria typically lengthen the isoprenoid side chain of vitamin K to produce a range of vitamin K forms , most notably the MK - 7 to MK - 11 homologues of vitamin K. All forms of K other than MK - 4 can only be produced by bacteria , which use these forms in anaerobic respiration . The MK - 7 and other bacterially derived forms of vitamin K exhibit vitamin K activity in animals , but MK - 7 's extra utility over MK - 4 , if any , is unclear and is a matter of investigation . </P>
<P> Bacteria in the gut flora can also convert K into vitamin K ( menaquinone ) . In addition , bacteria typically lengthen the isoprenoid side chain of vitamin K to produce a range of vitamin K forms , most notably the MK - 7 to MK - 11 homologues of vitamin K. All forms of K other than MK - 4 can only be produced by bacteria , which use these forms in anaerobic respiration . The MK - 7 and other bacterially derived forms of vitamin K exhibit vitamin K activity in animals , but MK - 7 's extra utility over MK - 4 , if any , is unclear and is a matter of investigation . </P>
what organ contains bacteria that help produce vitamin k
what organ contains bacteria that help produce vitamin k
gut
gut