Trans­port of Vi­t­a­min B12 Analogs by Mi­crobes of the Hu­man Gut
by Daniel and Elio — Both of us have bliss­fully go­ing along in our lives with­out know­ing what cor­ri­noids are, at least not by that name. We had of course learned way back (way, way back for Elio) that cobal­amin (vi­t­a­min B12) is a com­pli­cated or­ganic mol­e­cule made up of pyr­role rings and cobalt, but we hadn't heard of its 'cor­ri­noid' moniker. It de­riv­es from cor­rin, a pla­nar te­tra­pyr­role ring...