>sp|Q9Z5D9|BCHB_CERS4 Light-independent protochlorophyllide reductase subunit B OS=Cereibacter sphaeroides GN=bchB MKLTLWTYEGPPHVGAMRVATGMTGMHYVLHAPQGDTYADLLFTMIERRGKRPPVSYTTF QARDLGSDTAELFQSACRDAYERFQPQAIMVGSSCTAELIQDDTGGLADALSLPVPVVHL ELPSYQRKENFGADESFLQICRKLARPMERTEKVSCNLLGPTALGFRHRDDILEVTRLLE GMGIAVNAVAPMGASPADIARLGAAHFNVLLYPETGESAARWAEKTLKQPYTKTVPIGVG ATRDFVAEVAALAGVAPVADDSRLRQPWWSASVDSTYLTGKRVFLFGDATHVIAAARVAR DEMGFEVVGMGCYNREFARPMRAAAKGYGLEALVTDDYLEVEEAIQALAPELILGTQMER HIAKRLGIPCAVISAPVHVQDFPARYSPQMGFEGANVLFDTWIHPLTMGLEEHLLTMFRE DFEFHDEAGPSHHGGKAVPASAPRADEAAEALPLTGAETAEGGSIPPEAVPPAEAAAVPA GEIVWLTDAERELKKIPFFVRGKARRNTEKFAAEKGLTRISLETLYEAKAHYAR