Protein
Light-independent protochlorophyllide reductase subunit N
Organism
Rhodospirillum rubrum (strain ATCC 11170 / ATH 1.1.1 / DSM 467 / LMG 4362 / NCIB 8255 / S1)
Function
Component of the dark-operative protochlorophyllide reductase (DPOR) that uses Mg-ATP and reduced ferredoxin to reduce ring D of protochlorophyllide (Pchlide) to form chlorophyllide a (Chlide). This reaction is light-independent. The NB-protein (BchN-BchB) is the catalytic component of the complex.
Similarity
Belongs to the BchN/ChlN family.
Sequence
MTCRPALSDSHPPEPGTPSSPSFGVCGDRPLLRERGQHEVFCGLAGIIWLHRKIQDAFFLIIGSRTCAHLMQSAAGVMIFAEPRFATAVLEEQDLAGLADAQDEIDRVVARLLERRPDIRLLFLVGSCPSEVIKIDLQRAALRLSKVHGARTRVVSYSGSGLETTFTQGEDACLAALVPDLPSAAADEAPDLLVVGTLPDVVEDQFGRLFAEMGIARTAFLPPRRSTALPAIGPKTRFLLAQPFLGDTARCLEARGARRLAAPFPFGVEGTTGWLAAAAQAFGVDDLTFRRVTAPGRERAARALERQRATLEGKRVFFFPESQLEIPLARFLVRELGMEAIEIGTPYLHRAHLAEELALLPATALLSEGQDVDRQLDRCRAARPDLVVCGLGLANPLEAEGITTKWSIELVFSPIHGYEQAGDLAELFARPLLRRALLKV