ID B9AD97_METSM Unreviewed; 456 AA.
AC B9AD97;
DT 24-MAR-2009, integrated into UniProtKB/TrEMBL.
DT 24-MAR-2009, sequence version 1.
DT 27-MAR-2024, entry version 52.
DE RecName: Full=CCA-adding enzyme {ECO:0000256|HAMAP-Rule:MF_01264};
DE EC=2.7.7.72 {ECO:0000256|HAMAP-Rule:MF_01264};
DE AltName: Full=CCA tRNA nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_01264};
DE AltName: Full=tRNA CCA-pyrophosphorylase {ECO:0000256|HAMAP-Rule:MF_01264};
DE AltName: Full=tRNA adenylyl-/cytidylyl- transferase {ECO:0000256|HAMAP-Rule:MF_01264};
DE AltName: Full=tRNA nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_01264};
DE AltName: Full=tRNA-NT {ECO:0000256|HAMAP-Rule:MF_01264};
GN Name=cca {ECO:0000256|HAMAP-Rule:MF_01264,
GN ECO:0000313|EMBL:EEE41437.1};
GN ORFNames=METSMIALI_00320 {ECO:0000313|EMBL:EEE41437.1};
OS Methanobrevibacter smithii DSM 2375.
OC Archaea; Euryarchaeota; Methanomada group; Methanobacteria;
OC Methanobacteriales; Methanobacteriaceae; Methanobrevibacter.
OX NCBI_TaxID=483214 {ECO:0000313|EMBL:EEE41437.1, ECO:0000313|Proteomes:UP000003489};
RN [1] {ECO:0000313|EMBL:EEE41437.1, ECO:0000313|Proteomes:UP000003489}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 2375 {ECO:0000313|EMBL:EEE41437.1,
RC ECO:0000313|Proteomes:UP000003489};
RA Fulton L., Clifton S., Fulton B., Xu J., Minx P., Pepin K.H., Johnson M.,
RA Bhonagiri V., Nash W.E., Mardis E.R., Wilson R.K.;
RL Submitted (OCT-2008) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EEE41437.1, ECO:0000313|Proteomes:UP000003489}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 2375 {ECO:0000313|EMBL:EEE41437.1,
RC ECO:0000313|Proteomes:UP000003489};
RA Sudarsanam P., Ley R., Guruge J., Turnbaugh P.J., Mahowald M., Liep D.,
RA Gordon J.;
RT "Draft genome sequence of Methanobrevibacter smithii (DSM 2375).";
RL Submitted (NOV-2008) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the addition and repair of the essential 3'-
CC terminal CCA sequence in tRNAs without using a nucleic acid template.
CC Adds these three nucleotides in the order of C, C, and A to the tRNA
CC nucleotide-73, using CTP and ATP as substrates and producing inorganic
CC pyrophosphate. tRNA 3'-terminal CCA addition is required both for tRNA
CC processing and repair. Also involved in tRNA surveillance by mediating
CC tandem CCA addition to generate a CCACCA at the 3' terminus of unstable
CC tRNAs. While stable tRNAs receive only 3'-terminal CCA, unstable tRNAs
CC are marked with CCACCA and rapidly degraded. {ECO:0000256|HAMAP-
CC Rule:MF_01264}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-tyrosyl-[protein] = diphosphate + O-(5'-adenylyl)-L-
CC tyrosyl-[protein]; Xref=Rhea:RHEA:54288, Rhea:RHEA-COMP:10136,
CC Rhea:RHEA-COMP:13846, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:46858, ChEBI:CHEBI:83624; EC=2.7.7.108;
CC Evidence={ECO:0000256|ARBA:ARBA00034429};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + O-(5'-adenylyl)-L-tyrosyl-[protein] = diphosphate + O-
CC [5'-(adenylyl-(5'->3')-adenylyl)]-L-tyrosyl-[protein];
CC Xref=Rhea:RHEA:66528, Rhea:RHEA-COMP:13846, Rhea:RHEA-COMP:17046,
CC ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:83624,
CC ChEBI:CHEBI:167160; Evidence={ECO:0000256|ARBA:ARBA00035071};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a tRNA precursor + ATP + 2 CTP = a tRNA with a 3' CCA end + 3
CC diphosphate; Xref=Rhea:RHEA:14433, Rhea:RHEA-COMP:10465, Rhea:RHEA-
CC COMP:10468, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:37563,
CC ChEBI:CHEBI:74896, ChEBI:CHEBI:83071; EC=2.7.7.72;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01264};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a tRNA with a 3' CCA end + ATP + 2 CTP = a tRNA with a 3'
CC CCACCA end + 3 diphosphate; Xref=Rhea:RHEA:76235, Rhea:RHEA-
CC COMP:10468, Rhea:RHEA-COMP:18655, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:33019, ChEBI:CHEBI:37563, ChEBI:CHEBI:83071,
CC ChEBI:CHEBI:195187; Evidence={ECO:0000256|HAMAP-Rule:MF_01264};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01264};
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01264}.
CC -!- MISCELLANEOUS: A single active site specifically recognizes both ATP
CC and CTP and is responsible for their addition. {ECO:0000256|HAMAP-
CC Rule:MF_01264}.
CC -!- SIMILARITY: Belongs to the tRNA nucleotidyltransferase/poly(A)
CC polymerase family. Archaeal CCA-adding enzyme subfamily.
CC {ECO:0000256|HAMAP-Rule:MF_01264}.
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:EEE41437.1}.
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DR EMBL; ABYW01000004; EEE41437.1; -; Genomic_DNA.
DR RefSeq; WP_004035074.1; NZ_DS996911.1.
DR AlphaFoldDB; B9AD97; -.
DR PATRIC; fig|483214.13.peg.307; -.
DR HOGENOM; CLU_044679_1_0_2; -.
DR OrthoDB; 7378at2157; -.
DR Proteomes; UP000003489; Unassembled WGS sequence.
DR GO; GO:0070733; F:AMPylase activity; IEA:RHEA.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004810; F:CCA tRNA nucleotidyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0042245; P:RNA repair; IEA:UniProtKB-KW.
DR GO; GO:0001680; P:tRNA 3'-terminal CCA addition; IEA:UniProtKB-UniRule.
DR CDD; cd05400; NT_2-5OAS_ClassI-CCAase; 1.
DR Gene3D; 3.30.70.1550; Archaeal tRNA CCA-adding enzyme catalytic domain; 1.
DR Gene3D; 3.30.460.10; Beta Polymerase, domain 2; 1.
DR Gene3D; 1.10.1410.30; CCA tRNA nucleotidyltransferase, domain 2; 1.
DR Gene3D; 3.30.70.590; Poly(A) polymerase predicted RNA binding domain; 1.
DR HAMAP; MF_01264; CCA_arch; 1.
DR InterPro; IPR048833; CAA_C.
DR InterPro; IPR008229; CCA-adding_arc.
DR InterPro; IPR042090; CCA_tRNA_nucleotrans_2.
DR InterPro; IPR006116; NT_2-5OAS_ClassI-CCAase.
DR InterPro; IPR043519; NT_sf.
DR InterPro; IPR011068; NuclTrfase_I-like_C.
DR InterPro; IPR002934; Polymerase_NTP_transf_dom.
DR InterPro; IPR015329; tRNA_NucTransf2.
DR NCBIfam; TIGR03671; cca_archaeal; 1.
DR PANTHER; PTHR39643; CCA-ADDING ENZYME; 1.
DR PANTHER; PTHR39643:SF1; CCA-ADDING ENZYME; 1.
DR Pfam; PF21133; CAA_C_arc; 1.
DR Pfam; PF01909; NTP_transf_2; 1.
DR Pfam; PF09249; tRNA_NucTransf2; 1.
DR PIRSF; PIRSF005335; CCA_arch; 1.
DR SUPFAM; SSF81301; Nucleotidyltransferase; 1.
DR SUPFAM; SSF55003; PAP/Archaeal CCA-adding enzyme, C-terminal domain; 1.
DR SUPFAM; SSF81631; PAP/OAS1 substrate-binding domain; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01264};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01264};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01264};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01264};
KW Nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_01264,
KW ECO:0000313|EMBL:EEE41437.1};
KW RNA repair {ECO:0000256|ARBA:ARBA00022800, ECO:0000256|HAMAP-
KW Rule:MF_01264};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022884, ECO:0000256|HAMAP-
KW Rule:MF_01264};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01264};
KW tRNA processing {ECO:0000256|ARBA:ARBA00022694, ECO:0000256|HAMAP-
KW Rule:MF_01264}.
FT DOMAIN 31..139
FT /note="Polymerase nucleotidyl transferase"
FT /evidence="ECO:0000259|Pfam:PF01909"
FT DOMAIN 153..264
FT /note="tRNA nucleotidyltransferase substrate binding"
FT /evidence="ECO:0000259|Pfam:PF09249"
FT DOMAIN 283..429
FT /note="CCA-adding enzyme C-terminal"
FT /evidence="ECO:0000259|Pfam:PF21133"
FT BINDING 49
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 49
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 52
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 52
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 61
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 63
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 116
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 139
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 139
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 159
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 159
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 168
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
FT BINDING 168
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01264"
SQ SEQUENCE 456 AA; 52156 MW; 039E0ACD341DADAA CRC64;
MDYKQILNEI KPSKEESREI LKTSDKLISY LNEVCKDEGI TAHASLVGSV AKKTYLSGKS
DIDIFISFPL DMDVAQLKKT GLYLGYKCSD YFNGDASEHY ASHPYVTSQI NGFEVDFVPC
YKIEDGSQLK SAVDRTILHT KYIKSHLEQD QNEEVLLLKR FMDMTGTYGS EFKVGGFAGY
LCELLILKYG TFENTLKEAS KWRYGHTVDL EGYGTAALFN DPLIVIDPTD MNRNVGAALR
LDKMAEFIQS ARNYLASNNK KEYFYPVANK FAKDEILEEF QKRGSDVIAV KFNIPDIPLD
TLHPQLRKTT ESLAEKLNDE DFSVYQSDYW SDEENTAVLL FEMTVSRLNN TKIHYGPKVF
VKRGSQNFID KHGIENCYIL DDFVVSKISR EFVTASDFIN YVLSYENISL IKVGKNLLDN
IITSYELLSL DDLDLSNESF VTFLDDFLNP NKYLFR
//
