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Protein

Guanidinoacetate N-methyltransferase

Gene

Gamt

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Converts guanidinoacetate to creatine, using S-adenosylmethionine as the methyl donor. Important in nervous system development.By similarity

Catalytic activityi

S-adenosyl-L-methionine + guanidinoacetate = S-adenosyl-L-homocysteine + creatine.PROSITE-ProRule annotation

Pathwayi: creatine biosynthesis

This protein is involved in step 2 of the subpathway that synthesizes creatine from L-arginine and glycine.
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. Glycine amidinotransferase, mitochondrial (Gatm)
  2. Guanidinoacetate N-methyltransferase (Gamt)
This subpathway is part of the pathway creatine biosynthesis, which is itself part of Amine and polyamine biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes creatine from L-arginine and glycine, the pathway creatine biosynthesis and in Amine and polyamine biosynthesis.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei20 – 201S-adenosyl-L-methionine
Binding sitei42 – 421SubstratePROSITE-ProRule annotation1 Publication
Binding sitei46 – 461SubstratePROSITE-ProRule annotation1 Publication
Binding sitei50 – 501S-adenosyl-L-methionine
Binding sitei135 – 1351S-adenosyl-L-methionine and substrate

GO - Molecular functioni

  • guanidinoacetate N-methyltransferase activity Source: UniProtKB
  • protein homodimerization activity Source: RGD
  • S-adenosylmethionine-dependent methyltransferase activity Source: RGD

GO - Biological processi

  • creatine biosynthetic process Source: RGD
  • embryonic liver development Source: RGD
  • S-adenosylhomocysteine metabolic process Source: RGD
  • S-adenosylmethionine metabolic process Source: RGD
Complete GO annotation...

Keywords - Molecular functioni

Methyltransferase, Transferase

Keywords - Ligandi

S-adenosyl-L-methionine

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-7641.
BRENDAi2.1.1.2. 5301.
SABIO-RKP10868.
UniPathwayiUPA00104; UER00580.

Names & Taxonomyi

Protein namesi
Recommended name:
Guanidinoacetate N-methyltransferase (EC:2.1.1.2)
Gene namesi
Name:Gamt
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Unplaced

Organism-specific databases

RGDi2659. Gamt.

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Mutagenesisi46 – 461E → D: Reduces affinity for substrate and S-adenosyl-L-methionine about 2-fold. 1 Publication
Mutagenesisi46 – 461E → Q: Reduces affinity for substrate and S-adenosyl-L-methionine about 4-fold. 1 Publication
Mutagenesisi46 – 461E → S: Loss of activity. 1 Publication
Mutagenesisi135 – 1351D → A: Loss of activity. 1 Publication
Mutagenesisi135 – 1351D → E: Reduces affinity for S-adenosyl-L-methionine 500-fold. Reduces affinity for substrate about 40-fold. 1 Publication
Mutagenesisi135 – 1351D → N: Reduces affinity for S-adenosyl-L-methionine 2000-fold. Reduces affinity for substrate about 40-fold. 1 Publication
Mutagenesisi222 – 2221Y → F: Reduces affinity for S-adenosyl-L-methionine about 5-fold. Reduces affinity for substrate about 40-fold. 1 Publication

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methionineiRemovedBy similarity
Chaini2 – 236235Guanidinoacetate N-methyltransferasePRO_0000087432Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei2 – 21N-acetylserineBy similarity
Modified residuei7 – 71PhosphoserineCombined sources

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PaxDbiP10868.
PRIDEiP10868.

PTM databases

iPTMnetiP10868.

Expressioni

Tissue specificityi

Expressed in hepatic primordium in the embryo as soon as 12.5 days. In the adult, high levels of expression are found in liver and pancreas. Ubiquitously expressed in neuronal and glial cells in the brain.2 Publications

Interactioni

Subunit structurei

Monomer. May form homodimers upon proteolytic removal of the first 36 amino acid residues.4 Publications

GO - Molecular functioni

  • protein homodimerization activity Source: RGD

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000036927.

Structurei

Secondary structure

1
236
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi17 – 204Combined sources
Beta strandi33 – 364Combined sources
Beta strandi39 – 435Combined sources
Helixi44 – 463Combined sources
Helixi47 – 5711Combined sources
Turni58 – 603Combined sources
Beta strandi62 – 676Combined sources
Helixi73 – 808Combined sources
Beta strandi84 – 907Combined sources
Helixi93 – 10311Combined sources
Beta strandi107 – 1159Combined sources
Helixi117 – 1204Combined sources
Helixi121 – 1233Combined sources
Beta strandi129 – 1346Combined sources
Helixi141 – 1433Combined sources
Turni144 – 1463Combined sources
Helixi147 – 1548Combined sources
Helixi156 – 1594Combined sources
Beta strandi160 – 1689Combined sources
Helixi171 – 18010Combined sources
Helixi185 – 1928Combined sources
Helixi194 – 2007Combined sources
Helixi204 – 2063Combined sources
Beta strandi207 – 2137Combined sources
Beta strandi226 – 2349Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1KHHX-ray2.50A/B39-236[»]
1P1BX-ray2.80A/B/C/D38-236[»]
1P1CX-ray2.50A/B38-236[»]
1XCJX-ray2.00A2-236[»]
1XCLX-ray2.00A2-236[»]
ProteinModelPortaliP10868.
SMRiP10868. Positions 8-236.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP10868.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini13 – 236224RMT2PROSITE-ProRule annotationAdd
BLAST

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni69 – 746S-adenosyl-L-methionine binding
Regioni90 – 923S-adenosyl-L-methionine
Regioni117 – 1182S-adenosyl-L-methionine binding
Regioni171 – 1722Substrate binding

Sequence similaritiesi

Belongs to the class I-like SAM-binding methyltransferase superfamily. RMT2 methyltransferase family.PROSITE-ProRule annotation
Contains 1 RMT2 (arginine N-methyltransferase 2-like) domain.PROSITE-ProRule annotation

Phylogenomic databases

eggNOGiENOG410ISNM. Eukaryota.
ENOG410XPX4. LUCA.
HOGENOMiHOG000010290.
HOVERGENiHBG005801.
InParanoidiP10868.

Family and domain databases

Gene3Di3.40.50.150. 1 hit.
InterProiIPR016550. GuanidinoAc_N-MeTrfase.
IPR026480. RMT2_dom.
IPR029063. SAM-dependent_MTases.
[Graphical view]
PIRSFiPIRSF009285. GAMT. 1 hit.
SUPFAMiSSF53335. SSF53335. 1 hit.
PROSITEiPS51559. SAM_RMT2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P10868-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSSSAASPLF APGEDCGPAW RAAPAAYDTS DTHLQILGKP VMERWETPYM
60 70 80 90 100
HSLAAAAASR GGRVLEVGFG MAIAASRVQQ APIKEHWIIE CNDGVFQRLQ
110 120 130 140 150
NWALKQPHKV VPLKGLWEEE APTLPDGHFD GILYDTYPLS EETWHTHQFN
160 170 180 190 200
FIKTHAFRLL KPGGILTYCN LTSWGELMKS KYTDITAMFE ETQVPALLEA
210 220 230
GFQRENICTE VMALVPPADC RYYAFPQMIT PLVTKH
Length:236
Mass (Da):26,407
Last modified:January 23, 2007 - v2
Checksum:i738D6F0BC86DB1C3
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
J03588 mRNA. Translation: AAA41258.1.
X08056 Genomic DNA. Translation: CAA30845.1.
PIRiS01395.
UniGeneiRn.33890.

Genome annotation databases

UCSCiRGD:2659. rat.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
J03588 mRNA. Translation: AAA41258.1.
X08056 Genomic DNA. Translation: CAA30845.1.
PIRiS01395.
UniGeneiRn.33890.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1KHHX-ray2.50A/B39-236[»]
1P1BX-ray2.80A/B/C/D38-236[»]
1P1CX-ray2.50A/B38-236[»]
1XCJX-ray2.00A2-236[»]
1XCLX-ray2.00A2-236[»]
ProteinModelPortaliP10868.
SMRiP10868. Positions 8-236.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000036927.

PTM databases

iPTMnetiP10868.

Proteomic databases

PaxDbiP10868.
PRIDEiP10868.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

UCSCiRGD:2659. rat.

Organism-specific databases

RGDi2659. Gamt.

Phylogenomic databases

eggNOGiENOG410ISNM. Eukaryota.
ENOG410XPX4. LUCA.
HOGENOMiHOG000010290.
HOVERGENiHBG005801.
InParanoidiP10868.

Enzyme and pathway databases

UniPathwayiUPA00104; UER00580.
BioCyciMetaCyc:MONOMER-7641.
BRENDAi2.1.1.2. 5301.
SABIO-RKP10868.

Miscellaneous databases

EvolutionaryTraceiP10868.
PROiP10868.

Family and domain databases

Gene3Di3.40.50.150. 1 hit.
InterProiIPR016550. GuanidinoAc_N-MeTrfase.
IPR026480. RMT2_dom.
IPR029063. SAM-dependent_MTases.
[Graphical view]
PIRSFiPIRSF009285. GAMT. 1 hit.
SUPFAMiSSF53335. SSF53335. 1 hit.
PROSITEiPS51559. SAM_RMT2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiGAMT_RAT
AccessioniPrimary (citable) accession number: P10868
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 1, 1989
Last sequence update: January 23, 2007
Last modified: July 6, 2016
This is version 129 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Miscellaneous

The N-terminal first 36 amino acid residues are susceptible to proteolytic cleavage, leading to loss of activity.

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.