ID   COWN_AZOSB              Reviewed;         113 AA.
AC   A1K639;
DT   05-APR-2011, integrated into UniProtKB/Swiss-Prot.
DT   05-APR-2011, sequence version 2.
DT   25-MAY-2022, entry version 54.
DE   RecName: Full=N(2)-fixation sustaining protein CowN {ECO:0000255|HAMAP-Rule:MF_02117};
DE   AltName: Full=CO weal-nitrogenase {ECO:0000255|HAMAP-Rule:MF_02117};
GN   Name=cowN {ECO:0000255|HAMAP-Rule:MF_02117}; OrderedLocusNames=azo1677;
OS   Azoarcus sp. (strain BH72).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Rhodocyclales; Zoogloeaceae;
OC   Azoarcus.
OX   NCBI_TaxID=418699;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=BH72;
RX   PubMed=17057704; DOI=10.1038/nbt1243;
RA   Krause A., Ramakumar A., Bartels D., Battistoni F., Bekel T., Boch J.,
RA   Boehm M., Friedrich F., Hurek T., Krause L., Linke B., McHardy A.C.,
RA   Sarkar A., Schneiker S., Syed A.A., Thauer R., Vorhoelter F.-J.,
RA   Weidner S., Puehler A., Reinhold-Hurek B., Kaiser O., Goesmann A.;
RT   "Complete genome of the mutualistic, N2-fixing grass endophyte Azoarcus sp.
RT   strain BH72.";
RL   Nat. Biotechnol. 24:1385-1391(2006).
CC   -!- FUNCTION: Is required to sustain N(2)-dependent growth in the presence
CC       of low levels of carbon monoxide (CO). Probably acts by protecting the
CC       N(2) fixation ability of the nitrogenase complex, which is inactivated
CC       in the presence of CO. {ECO:0000255|HAMAP-Rule:MF_02117}.
CC   -!- SIMILARITY: Belongs to the CowN family. {ECO:0000255|HAMAP-
CC       Rule:MF_02117}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAL94294.1; Type=Erroneous initiation; Note=Extended N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; AM406670; CAL94294.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_050976110.1; NC_008702.1.
DR   AlphaFoldDB; A1K639; -.
DR   STRING; 62928.azo1677; -.
DR   PRIDE; A1K639; -.
DR   EnsemblBacteria; CAL94294; CAL94294; azo1677.
DR   KEGG; aoa:dqs_1827; -.
DR   KEGG; azo:azo1677; -.
DR   eggNOG; ENOG50330SG; Bacteria.
DR   HOGENOM; CLU_149349_0_0_4; -.
DR   Proteomes; UP000002588; Chromosome.
DR   GO; GO:0009399; P:nitrogen fixation; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_02117; CowN; 1.
DR   InterPro; IPR024899; CowN.
PE   3: Inferred from homology;
KW   Nitrogen fixation; Reference proteome.
FT   CHAIN           1..113
FT                   /note="N(2)-fixation sustaining protein CowN"
FT                   /id="PRO_0000407249"
SQ   SEQUENCE   113 AA;  13237 MW;  8A5689D808B1AFCE CRC64;
     MNAPDPRDQL ARPLNNPFAE ALDKPDRYVS FCGIDCDGNA RILMQHIRRH IDDPTKGNAF
     WDKFRDKLEG RSSERCDELF LVHSYINMIR ELFETYEDDD ALALLQKIEE ECC