ID V6TZP8_GIAIN Unreviewed; 290 AA.
AC V6TZP8;
DT 19-FEB-2014, integrated into UniProtKB/TrEMBL.
DT 19-FEB-2014, sequence version 1.
DT 24-JAN-2024, entry version 34.
DE RecName: Full=diphthine methyl ester synthase {ECO:0000256|ARBA:ARBA00011927};
DE EC=2.1.1.314 {ECO:0000256|ARBA:ARBA00011927};
GN ORFNames=GSB_28666 {ECO:0000313|EMBL:ESU44413.1};
OS Giardia intestinalis (Giardia lamblia).
OC Eukaryota; Metamonada; Diplomonadida; Hexamitidae; Giardiinae; Giardia.
OX NCBI_TaxID=5741 {ECO:0000313|EMBL:ESU44413.1, ECO:0000313|Proteomes:UP000018040};
RN [1] {ECO:0000313|Proteomes:UP000018040}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=GS {ECO:0000313|Proteomes:UP000018040};
RA Adam R., Dahlstrom E., Martens C., Bruno D., Barbian K., Porcella S.F.,
RA Nash T.;
RT "Genome sequencing of Giardia lamblia Genotypes A2 and B isolates (DH and
RT GS) and comparative analysis with the genomes of Genotypes A1 and E (WB and
RT Pig).";
RL Submitted (FEB-2012) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:ESU44413.1, ECO:0000313|Proteomes:UP000018040}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=GS {ECO:0000313|EMBL:ESU44413.1,
RC ECO:0000313|Proteomes:UP000018040};
RX PubMed=24307482; DOI=10.1093/gbe/evt197;
RA Adam R.D., Dahlstrom E.W., Martens C.A., Bruno D.P., Barbian K.D.,
RA Ricklefs S.M., Hernandez M.M., Narla N.P., Patel R.B., Porcella S.F.,
RA Nash T.E.;
RT "Genome sequencing of Giardia lamblia genotypes A2 and B isolates (DH and
RT GS) and comparative analysis with the genomes of genotypes A1 and E (WB and
RT Pig).";
RL Genome Biol. Evol. 5:2498-2511(2013).
CC -!- FUNCTION: S-adenosyl-L-methionine-dependent methyltransferase that
CC catalyzes four methylations of the modified target histidine residue in
CC translation elongation factor 2 (EF-2), to form an intermediate called
CC diphthine methyl ester. The four successive methylation reactions
CC represent the second step of diphthamide biosynthesis.
CC {ECO:0000256|ARBA:ARBA00004006}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2-[(3S)-amino-3-carboxypropyl]-L-histidyl-[translation
CC elongation factor 2] + 4 S-adenosyl-L-methionine = diphthine methyl
CC ester-[translation elongation factor 2] + 3 H(+) + 4 S-adenosyl-L-
CC homocysteine; Xref=Rhea:RHEA:42652, Rhea:RHEA-COMP:9749, Rhea:RHEA-
CC COMP:10173, ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC ChEBI:CHEBI:73995, ChEBI:CHEBI:79005; EC=2.1.1.314;
CC Evidence={ECO:0000256|ARBA:ARBA00000054};
CC -!- PATHWAY: Protein modification; peptidyl-diphthamide biosynthesis.
CC {ECO:0000256|ARBA:ARBA00005156}.
CC -!- SIMILARITY: Belongs to the diphthine synthase family.
CC {ECO:0000256|ARBA:ARBA00006729}.
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:ESU44413.1}.
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DR EMBL; AHHH01000023; ESU44413.1; -; Genomic_DNA.
DR AlphaFoldDB; V6TZP8; -.
DR EnsemblProtists; ESU44413; ESU44413; GSB_28666.
DR VEuPathDB; GiardiaDB:DHA2_28666; -.
DR VEuPathDB; GiardiaDB:GL50581_425; -.
DR VEuPathDB; GiardiaDB:GL50803_0028666; -.
DR VEuPathDB; GiardiaDB:QR46_2110; -.
DR UniPathway; UPA00559; -.
DR Proteomes; UP000018040; Unassembled WGS sequence.
DR GO; GO:0004164; F:diphthine synthase activity; IEA:InterPro.
DR GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR GO; GO:0017183; P:protein histidyl modification to diphthamide; IEA:UniProtKB-UniPathway.
DR CDD; cd11647; DHP5_DphB; 1.
DR InterPro; IPR000878; 4pyrrol_Mease.
DR InterPro; IPR035996; 4pyrrol_Methylase_sf.
DR InterPro; IPR014777; 4pyrrole_Mease_sub1.
DR InterPro; IPR014776; 4pyrrole_Mease_sub2.
DR InterPro; IPR004551; Dphthn_synthase.
DR NCBIfam; TIGR00522; dph5; 1.
DR PANTHER; PTHR10882:SF0; DIPHTHINE METHYL ESTER SYNTHASE; 1.
DR PANTHER; PTHR10882; DIPHTHINE SYNTHASE; 1.
DR Pfam; PF00590; TP_methylase; 1.
DR PIRSF; PIRSF036432; Diphthine_synth; 1.
DR SUPFAM; SSF53790; Tetrapyrrole methylase; 1.
PE 3: Inferred from homology;
KW Methyltransferase {ECO:0000256|ARBA:ARBA00022603};
KW S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691,
KW ECO:0000256|PIRSR:PIRSR036432-1};
KW Transferase {ECO:0000256|ARBA:ARBA00022679}.
FT DOMAIN 1..240
FT /note="Tetrapyrrole methylase"
FT /evidence="ECO:0000259|Pfam:PF00590"
FT BINDING 87
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|PIRSR:PIRSR036432-1"
FT BINDING 115..116
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|PIRSR:PIRSR036432-1"
FT BINDING 166
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|PIRSR:PIRSR036432-1"
SQ SEQUENCE 290 AA; 33218 MW; 78D32CF2883B7499 CRC64;
MLYMIGLGFM PEDISVRALR AVRSCARVYL DTYTSIIISY EDMRCLMEDV LQRTDLIQCD
RKVVEQDEDS IIADAVQHDV AFLVAGDVFC ATTHTNLYLK AIQQKVSVVV MHNASIMTAV
SCTGLEMYRF GRTVSIPIFT STWRPSSFLD YYLENARLNL HTLVLLQMST KELDMDLYCE
KGLERYSNPY YLLPNQAARQ ILSLVDEYPD TYSQVSTDTI VIVCCRVGTD TQQLESTTLG
RCALQTDEYY GKPMYALVLP SPIIMEQERR MLELFTDDIS VKNMLKEITR
//