ID A0A1B9AB55_9BACI Unreviewed; 1085 AA.
AC A0A1B9AB55;
DT 02-NOV-2016, integrated into UniProtKB/TrEMBL.
DT 02-NOV-2016, sequence version 1.
DT 27-MAR-2024, entry version 29.
DE RecName: Full=Fused isobutyryl-CoA mutase {ECO:0000256|HAMAP-Rule:MF_02050};
DE Includes:
DE RecName: Full=Isobutyryl-CoA mutase {ECO:0000256|HAMAP-Rule:MF_02050};
DE Short=ICM {ECO:0000256|HAMAP-Rule:MF_02050};
DE EC=5.4.99.13 {ECO:0000256|HAMAP-Rule:MF_02050};
DE Includes:
DE RecName: Full=P-loop GTPase {ECO:0000256|HAMAP-Rule:MF_02050};
DE EC=3.6.5.- {ECO:0000256|HAMAP-Rule:MF_02050};
DE AltName: Full=G-protein chaperone {ECO:0000256|HAMAP-Rule:MF_02050};
GN Name=icmF {ECO:0000256|HAMAP-Rule:MF_02050};
GN ORFNames=A8L44_15455 {ECO:0000313|EMBL:OCA81086.1};
OS Bacillus sp. FJAT-27986.
OC Bacteria; Bacillota; Bacilli; Bacillales; Bacillaceae; Bacillus.
OX NCBI_TaxID=1743146 {ECO:0000313|EMBL:OCA81086.1, ECO:0000313|Proteomes:UP000092673};
RN [1] {ECO:0000313|EMBL:OCA81086.1, ECO:0000313|Proteomes:UP000092673}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=FJAT-27986 {ECO:0000313|EMBL:OCA81086.1,
RC ECO:0000313|Proteomes:UP000092673};
RA Liu X., Pan Z., Shi H., Ge C., Che J., Lan J., Chen Q., Zhu Y., Wang J.,
RA Liu B., Liu G.;
RT "Bacillus sp. FJAT-27986.";
RL Submitted (MAY-2016) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the reversible interconversion of isobutyryl-CoA
CC and n-butyryl-CoA, using radical chemistry. Also exhibits GTPase
CC activity, associated with its G-protein domain (MeaI) that functions as
CC a chaperone that assists cofactor delivery and proper holo-enzyme
CC assembly. {ECO:0000256|HAMAP-Rule:MF_02050}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2-methylpropanoyl-CoA = butanoyl-CoA; Xref=Rhea:RHEA:13141,
CC ChEBI:CHEBI:57338, ChEBI:CHEBI:57371; EC=5.4.99.13;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_02050};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=GTP + H2O = GDP + H(+) + phosphate; Xref=Rhea:RHEA:19669,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:37565,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:58189; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_02050};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_02050};
CC -!- COFACTOR:
CC Name=adenosylcob(III)alamin; Xref=ChEBI:CHEBI:18408;
CC Evidence={ECO:0000256|ARBA:ARBA00001922,
CC ECO:0000256|HAMAP-Rule:MF_02050};
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_02050}.
CC -!- DOMAIN: Is composed of four functional domains: the N-terminal 5'-
CC deoxyadenosylcobalamin binding region that is homologous to the small
CC subunit of ICM (IcmB), a middle P-loop GTPase domain (MeaI) that likely
CC acts as a chaperone for ICM, a structured linker region involved in
CC dimer formation, and a C-terminal part that is homologous to the large
CC substrate-binding subunit of ICM (IcmA). {ECO:0000256|HAMAP-
CC Rule:MF_02050}.
CC -!- SIMILARITY: Belongs to the IcmF family. {ECO:0000256|HAMAP-
CC Rule:MF_02050}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_02050}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:OCA81086.1}.
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DR EMBL; MAYV01000019; OCA81086.1; -; Genomic_DNA.
DR RefSeq; WP_066109367.1; NZ_MAYV01000019.1.
DR AlphaFoldDB; A0A1B9AB55; -.
DR STRING; 1743146.A8L44_15455; -.
DR OrthoDB; 9762378at2; -.
DR Proteomes; UP000092673; Unassembled WGS sequence.
DR GO; GO:0031419; F:cobalamin binding; IEA:UniProtKB-UniRule.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003924; F:GTPase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0047727; F:isobutyryl-CoA mutase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0034784; F:pivalyl-CoA mutase activity; IEA:InterPro.
DR GO; GO:0006637; P:acyl-CoA metabolic process; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.50.280; Cobalamin-binding domain; 1.
DR Gene3D; 3.20.20.240; Methylmalonyl-CoA mutase; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR HAMAP; MF_02050; IcmF; 1.
DR InterPro; IPR006159; Acid_CoA_mut_C.
DR InterPro; IPR016176; Cbl-dep_enz_cat.
DR InterPro; IPR006158; Cobalamin-bd.
DR InterPro; IPR036724; Cobalamin-bd_sf.
DR InterPro; IPR033669; IcmF.
DR InterPro; IPR006099; MeMalonylCoA_mutase_a/b_cat.
DR InterPro; IPR027417; P-loop_NTPase.
DR NCBIfam; TIGR00640; acid_CoA_mut_C; 1.
DR PANTHER; PTHR43087:SF1; LAO_AO TRANSPORT SYSTEM ATPASE; 1.
DR PANTHER; PTHR43087; LYSINE/ARGININE/ORNITHINE TRANSPORT SYSTEM KINASE; 1.
DR Pfam; PF02310; B12-binding; 1.
DR Pfam; PF03308; MeaB; 1.
DR Pfam; PF01642; MM_CoA_mutase; 1.
DR SUPFAM; SSF52242; Cobalamin (vitamin B12)-binding domain; 1.
DR SUPFAM; SSF51703; Cobalamin (vitamin B12)-dependent enzymes; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR PROSITE; PS51332; B12_BINDING; 1.
PE 3: Inferred from homology;
KW Chaperone {ECO:0000256|HAMAP-Rule:MF_02050};
KW Cobalamin {ECO:0000256|ARBA:ARBA00022628, ECO:0000256|HAMAP-Rule:MF_02050};
KW Cobalt {ECO:0000256|ARBA:ARBA00023285, ECO:0000256|HAMAP-Rule:MF_02050};
KW GTP-binding {ECO:0000256|HAMAP-Rule:MF_02050};
KW Hydrolase {ECO:0000256|HAMAP-Rule:MF_02050};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_02050};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_02050};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_02050}; Multifunctional enzyme {ECO:0000256|HAMAP-Rule:MF_02050};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_02050}; Reference proteome {ECO:0000313|Proteomes:UP000092673}.
FT DOMAIN 10..144
FT /note="B12-binding"
FT /evidence="ECO:0000259|PROSITE:PS51332"
FT BINDING 23
FT /ligand="adenosylcob(III)alamin"
FT /ligand_id="ChEBI:CHEBI:18408"
FT /ligand_part="Co"
FT /ligand_part_id="ChEBI:CHEBI:27638"
FT /note="axial binding residue"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 209..214
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 213
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 237
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 238
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 251
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 251
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 254
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 299
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 299
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 300
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 346..349
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 577
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 612
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 718
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 762
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 811
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 846
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 851
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 963
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
FT BINDING 1084
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02050"
SQ SEQUENCE 1085 AA; 121953 MW; E9F2BDD41ADFB7DE CRC64;
MNKGYKPKHP IRFVTASSLF DGHDVSVNIM RRILQAKGAE VIHLGHNRSV EEIVNAAIQE
DVQGIAVSSY QGGHVEFFKY MYDLLKERGA GHIRIYGGGG GVIIPREIKE LHEYGIAKIF
SPDDGREMGL EGMMELLIRE CDYPLPPLEE LNEGNLSVSA PLTVARAITM VENRLLAGQE
AVALSDELQK IDDKQVNHIP VIGITGTGGA GKSSLTDELI RRFINEIPEQ NIAILSIDPT
KQKTGGALLG DRIRMNAIFH PRVYMRSLAT RNSHSELSNS IKDAIAVVKA AGFDAVIIET
SGIGQGDAAI TEVCDISMYV MTSEFGAPSQ LEKIDMIDFA DLIVINKFER KGSEDALRQV
QKQYQRSRNL FDKDLAEMPV YGTIASQFND VGTNALFAAL LEVIEKKTGQ EYKSRFNTSM
RSEKQNVIIP PDRQYYLREI AETVKQYHTA SLEQQQIARR LFQIEGTIQA LEEEGYSADG
TEPLSELQKG YRQNLTNESK AILDGWNNQK ELYSKTELIT KVRNKEIKTE LRTSTLSGLT
IPKVALPKFQ DYGEILRWVQ KENVPGKFPF TAGVFPFKRQ EEDPKRQFAG EGSPERTNRR
FHYLSKDDTA KRLSTAFDSV TLYGEDPHIR PDIYGKVGES GVSVCTLEDM KKLYDGFDLC
SPSTSVSMTI NGPAPIILAM FMNTAIDQQI EKKQAELKRT LTSEEKETVK KETLEIVRGT
VQADILKEDQ GQNTCIFSTE FALKLMGDIQ EYFVKNRVRN YYSVSISGYH IAEAGANPIS
QLAFTLSNGF TYVEYYLSRG MDIDSFAPNL SFFFSNGLDP EYTVLGRVAR RIWAIVMRDK
YGANERSQKL KYHIQTSGRS LHAQEIDFND IRTTLQALLA LQDNCNSLHT NAYDEAITTP
TEESVRRAMA IQMIVTKEFG WMKNENSLQG SFIVEELTDL VEEAVLREFE RINDRGGVLG
AMEMQYQRGK IQDESLVYEM KKHSGELPII GVNTYLNPNP PSEDEVNNME LARATKDEKD
LQIANLDKFK EIHGMAAENA LTQLKEAAIN GENIFEQLME TVKTASLGQI THALYEVGGQ
YRRNM
//
