narB

Gene

narB

Protein

Nitrate reductase

Organism

Synechococcus elongatus (strain PCC 7942)

Length

729 amino acids

Function

Nitrate reductase is a key enzyme involved in the first step of nitrate assimilation in plants, fungi and bacteria.

Similarity

Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily.

Mass

79.854 kDa

Sequence

MFDLSKFLPVITPLMIDTAKTLCPYCGVGCGLEAVPPAQPGRATVRDREGTPIWQIRGDRQHPSSQGMVCVKGATVAESVSKSRLKYPMFRASLDDPFTEISWDEALDRLCDRIQQTQADYGKDGICFYGSGQFQTEDYYIAQKLVKGCLGTNNFDTNSRLCMSSAVSAYSLCLGSDGPPACYEDLDLADCLLIVGSNTAECHPILFNRYRKRHKQGGTNLIVVDPRCTPTAEVADLHLALKPGSDVALLNGLGWLLYQMGYVKKDFIANQTEGFEDWLAIIEDYPPQRTAELTGLAVAELVRAADLIASAQRWLSLWSMGVNQSIQGTAKATSLINLHLLTRQIGLPGCGPFSLTGQPNAMGGRETGGLAHLLPGYRKVIDPQHRADVETIWGLPMGSISPQPGRTAWQMIEGLEQGAVGFLWVAATNPAVSLPDVKRAQAALKRSPFTVLQDAYHPTETTTYAHLLLPAAQWSEKTGTMTNSERRVTLCQAFRQPPGEARADWQIFAEVGRRLGFAFDYTDAAAVFAEYVQVTAGRLCDLSGLSHELLAQAGPQQWPFPAGAEPTTESKRLYTKHHFAYADGRARFQPFHHLGVAEPPDDRYPLVLTVGRLYGHWHTQTRTGRIDKINKLHPSAFVEIHPRDADRYNISEGQAVVIRSRRGEGCFPAKVTTAISPGVLFVPMHWGALWGDRTEANALTHPAACPISGEPELKACAVQIEAASSTFTI

Protein

Nitrate reductase: narB

Gene

narB

Protein

Nitrate reductase

Organism

Synechocystis sp. (strain PCC 6803 / Kazusa)

Length

714 amino acids

Function

Nitrate reductase is a key enzyme involved in the first step of nitrate assimilation in plants, fungi and bacteria.

Similarity

Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily.

Mass

79.632 kDa

Sequence

MDSPAILPTTRTLCPYCGVGCGLEAVASPQKSVVDAGHAHKIRGDRQHPSSQGMVCVKGATVMESMDKQRLLYPMFRSSLDQPWQQISWEAALEIVVDKIQQVKQTLGVSGLCMYASGQMQTEDYYVAQKLFKGCLGTNNFDTNSRLCMSSAVSAYSLSFGSDGPPCCYEDLEITDCAFLIGTNTADCHPIIFNRLRKHHKQNPHVKLIVVDPRCTATAEVADLHLAINPGSDITLLHGIAYLLKKWNLIDQKFIDNHTQDFEQYCQVIDHYPPEKVTQICGISLEQLETAAHYWGNAKTVLSLWSMGMNQSFQGTAKGRCLINLHLLTGQIGKPGSGPFSLTGQPNAMGGREAGGLSHLLPGYRSIKNPQHRQEVEQLWQISPGRINPEPGLSAWEMFMGLENQQVGFLWIVATNPVVSMPDLERVKKALQQSTFTIHQDAYSPTETAEYAHLLLPAAQWSEKTGTMTNSERRVTLSPAFRSPPGEARPDWEIFAEVGRRLGFENQFNFVDSAAVHREYVQLTAERLCDQSGVSYEKLQKLGPLQWPCRQSDQESQLLSTKRLYTDYKFCTENGRANFCLDHSRGLAEPVDPNYPFVLTNGRLYGHWHTQTRTGHIEKIKKMHPKPILEMHPKDAEKLGIKSQDLVAIKSRRGSAQLEVLVTRAIAPGTVFMPMHWGFLWDDNAEVNSLTHATACPISKQPELKACAVNITPV

Protein

Nitrate reductase: narB

Gene

narB

Protein

Putative respiratory nitrate reductase subunit Rieske

Organism

Haloferax mediterranei (strain ATCC 33500 / DSM 1411 / JCM 8866 / NBRC 14739 / NCIMB 2177 / R-4)

Length

220 amino acids

Function

The respiratory membrane-bound nitrate reductase enzyme complex plays a role in generation of metabolic energy by using nitrate as a terminal electron acceptor during anaerobic conditions. Proposed Rieske subunit involved in a protonmotive Q-cycle mechanism-based electron transfer electrons to the beta subunit.

Mass

23.089 kDa

Sequence

METDRQGSESGACDGCCSDCSDEGTQSQQPTIFTDTRASLARRDYAKLLASVGGLTAVASLTAPLAGLTRVFEREYTGPVYSDGIYLVDGDGNRIEEKALSEGEKMTVFPEPRPGIEKAPTLLVRHAEDAYSDAVKTEYMVAGYTAYSKVCTHAGCMVSNEEDGTLVCPCHFGKFDPTDGAAVVGGPPSRALPQLPITVSSEGYLIATGDFNGPVGPGGD

Protein

Putative respiratory nitrate reductase subunit Rieske: narB