MBHS_RUBGE
ID MBHS_RUBGE Reviewed; 361 AA.
AC P17633;
DT 01-AUG-1990, integrated into UniProtKB/Swiss-Prot.
DT 15-NOV-2002, sequence version 2.
DT 03-AUG-2022, entry version 116.
DE RecName: Full=Uptake hydrogenase small subunit;
DE EC=1.12.99.6;
DE AltName: Full=Hydrogenlyase;
DE AltName: Full=Membrane-bound hydrogenase small subunit;
DE Flags: Precursor;
GN Name=hupA; Synonyms=hupS;
OS Rubrivivax gelatinosus (Rhodocyclus gelatinosus) (Rhodopseudomonas
OS gelatinosa).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales; Rubrivivax.
OX NCBI_TaxID=28068;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=2325631; DOI=10.1007/bf00280367;
RA Uffen R.L., Colbeau A., Richaud P., Vignais P.M.;
RT "Cloning and sequencing the genes encoding uptake-hydrogenase subunits of
RT Rhodocyclus gelatinosus.";
RL Mol. Gen. Genet. 221:49-58(1990).
CC -!- FUNCTION: This enzyme recycles the H(2) produced by nitrogenase to
CC increase the production of ATP and to protect nitrogenase against
CC inhibition or damage by O(2) under carbon- or phosphate-limited
CC conditions.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=A + H2 = AH2; Xref=Rhea:RHEA:12116, ChEBI:CHEBI:13193,
CC ChEBI:CHEBI:17499, ChEBI:CHEBI:18276; EC=1.12.99.6;
CC -!- COFACTOR:
CC Name=[3Fe-4S] cluster; Xref=ChEBI:CHEBI:21137; Evidence={ECO:0000250};
CC Note=Binds 1 [3Fe-4S] cluster. {ECO:0000250};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883; Evidence={ECO:0000250};
CC Note=Binds 2 [4Fe-4S] clusters. {ECO:0000250};
CC -!- SUBUNIT: Heterodimer of a large and a small subunit.
CC -!- SUBCELLULAR LOCATION: Cell membrane; Peripheral membrane protein.
CC -!- PTM: Predicted to be exported by the Tat system. The position of the
CC signal peptide cleavage has not been experimentally proven.
CC -!- SIMILARITY: Belongs to the [NiFe]/[NiFeSe] hydrogenase small subunit
CC family. {ECO:0000305}.
CC -!- SEQUENCE CAUTION:
CC Sequence=CAA36754.1; Type=Frameshift; Evidence={ECO:0000305};
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DR EMBL; X52522; CAA36754.1; ALT_FRAME; Genomic_DNA.
DR PIR; S09250; S09250.
DR AlphaFoldDB; P17633; -.
DR SMR; P17633; -.
DR GO; GO:0009375; C:ferredoxin hydrogenase complex; IEA:InterPro.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0051538; F:3 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0008901; F:ferredoxin hydrogenase activity; IEA:InterPro.
DR GO; GO:0033748; F:hydrogenase (acceptor) activity; IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR Gene3D; 3.40.50.700; -; 1.
DR Gene3D; 4.10.480.10; -; 1.
DR InterPro; IPR027394; Cytochrome-c3_hydrogenase_C.
DR InterPro; IPR006137; NADH_UbQ_OxRdtase-like_20kDa.
DR InterPro; IPR037148; NiFe-Hase_small_C_sf.
DR InterPro; IPR037024; NiFe_Hase_small_N_sf.
DR InterPro; IPR001821; NiFe_hydrogenase_ssu.
DR InterPro; IPR006311; TAT_signal.
DR InterPro; IPR019546; TAT_signal_bac_arc.
DR PANTHER; PTHR30013; PTHR30013; 1.
DR Pfam; PF14720; NiFe_hyd_SSU_C; 1.
DR Pfam; PF01058; Oxidored_q6; 1.
DR PIRSF; PIRSF000310; NiFe_hyd_ssu; 1.
DR TIGRFAMs; TIGR00391; hydA; 1.
DR TIGRFAMs; TIGR01409; TAT_signal_seq; 1.
DR PROSITE; PS51318; TAT; 1.
PE 3: Inferred from homology;
KW 3Fe-4S; 4Fe-4S; Cell membrane; Iron; Iron-sulfur; Membrane; Metal-binding;
KW Oxidoreductase; Signal.
FT SIGNAL 1..42
FT /note="Tat-type signal"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00648"
FT CHAIN 43..361
FT /note="Uptake hydrogenase small subunit"
FT /id="PRO_0000013436"
FT BINDING 59
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 62
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 156
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 190
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 228
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 231
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 256
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 262
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 271
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000250"
FT BINDING 290
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000250"
FT BINDING 293
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000250"
SQ SEQUENCE 361 AA; 39369 MW; 2CA41EA36FC81D54 CRC64;
METFYEVMRR QGISRRSFLK YCSLTATSLG LAPSFVPQIA HAMETKPRTP VLWLHGLECT
CCSESFIRSA HPLAKDAVLS MISLDYDDTL MAAAGHQAEA ILDEIMAKYK GNYILAVEGN
PPLNEDGMFC IQRQALPREA QAVAADCKAV IAWGSCASWG CVQAAKPNPT QATPIHKVIT
DKPIIKVPGC PPIAEVMTGV ITYMLTFDRI PELDRQGRPK MFYSQRIHDK CYRRPHFDAG
QFVESFDDEN ARKGFCLYKV GCKGPTTYNA CSTVMWNEGT SFPIKAGHGC TGCSEDGFWD
KGSFYDRLTN IHQFGIEASA DKVGGTAAGV VGAAIAAHAA ASVIKRLSHD PDAAARAESR
S
