Reviewed, UniProtKB/Swiss-Prot P26187 (MGMT_MOUSE)

Names and origin

Protein names

Recommended name:
    Methylated-DNA--protein-cysteine methyltransferase
    EC=2.1.1.63
Alternative name(s):
    6-O-methylguanine-DNA methyltransferase
      Short name=MGMT
    O-6-methylguanine-DNA-alkyltransferase

Gene names

Name:

Mgmt

Organism

Mus musculus (Mouse)

Taxonomic identifier

10090 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Mus

Protein attributes

Sequence length	211 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Involved in the cellular defense against the biological effects of O6-methylguanine (O6-MeG) in DNA. Repairs alkylated guanine in DNA by stoichiometrically transferring the alkyl group at the O-6 position to a cysteine residue in the enzyme. This is a suicide reaction: the enzyme is irreversibly inactivated.
Catalytic activity	DNA (containing 6-O-methylguanine) + protein L-cysteine = DNA (without 6-O-methylguanine) + protein S-methyl-L-cysteine.
Cofactor	Binds 1 zinc ion By similarity.
Subcellular location	Nucleus Probable.
Sequence similarities	Belongs to the MGMT family.

Ontologies

Keywords
Biological process	DNA damage DNA repair
Cellular component	Nucleus
Ligand	DNA-binding Metal-binding Zinc
Molecular function	Methyltransferase Transferase
PTM	Phosphoprotein
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	DNA dealkylation Inferred from direct assay. Source: MGI regulation of caspase activity Inferred from mutant phenotype. Source: MGI
Cellular component	nucleus Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	DNA binding Inferred from electronic annotation. Source: UniProtKB-KW methylated-DNA-[protein]-cysteine S-methyltransferase activity Inferred from electronic annotation. Source: EC zinc ion binding Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Initiator methionine	1	1	Removed By similarity
	Chain	2 – 211	210	Methylated-DNA--protein-cysteine methyltransferase		PRO_0000139360
Sites
	Active site	149	1	Nucleophile; methyl group acceptor By similarity
	Metal binding	5	1	Zinc By similarity
	Metal binding	24	1	Zinc By similarity
	Metal binding	29	1	Zinc By similarity
	Metal binding	89	1	Zinc By similarity
	Binding site	99	1	DNA; via amide nitrogen By similarity
	Binding site	118	1	DNA By similarity
	Binding site	119	1	DNA; via amide nitrogen By similarity
	Binding site	127	1	DNA By similarity
	Binding site	132	1	DNA By similarity
	Binding site	155	1	DNA; via amide nitrogen By similarity
Amino acid modifications
	Modified residue	205	1	Phosphoserine By similarity

Sequences

	Sequence		Length	Mass (Da)
	P26187-1 [UniParc]. Last modified January 23, 2007. Version 3. Checksum: 838BB92B9A1083D6	FASTA	211	22,435
	10 20 30 40 50 60 MAETCKMKYS VLDSPLGKME LSGCERGLHG IRLLSGKTPN TDPTEAPATP EVLGGPEGVP 70 80 90 100 110 120 EPLVQCTAWL EAYFREPAAT EGLPLPALHH PVFQQDSFTR QVLWKLLKVV KFGETVSYQQ 130 140 150 160 170 180 LAALAGNPKA ARAVGGAMRS NPVPILIPCH RVVRSDGAIG HYSGGGQAVK EWLLAHEGIP 190 200 210 TGQPASKGLG LTGTWLKSSF ESTSSEPSGR N

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Characterization of cDNA encoding mouse DNA repair protein O6-methylguanine-DNA methyltransferase and high-level expression of the wild-type and mutant proteins in Escherichia coli." Shiota S., von Wronski M.A., Tano K., Bigner D.D., Brent T.P., Mitra S. Biochemistry 31:1897-1903(1992) [PubMed: 1371399] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], PARTIAL PROTEIN SEQUENCE.
[2]	"MGMT sequence of B6 and C3H mice." Shimada Y., Kakinuma S., Kubo A., Nishimura M. Submitted (SEP-2002) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Strain: C3H and C57BL/6. Tissue: Thymus.
[3]	"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Strain: FVB/N-3. Tissue: Mammary gland.
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBLGenBankDDBJ	M84524 mRNA. Translation: AAA37126.1. AB092489 mRNA. Translation: BAC16763.1. AB092490 mRNA. Translation: BAC16764.1. BC031888 mRNA. Translation: AAH31888.1.
IPI	IPI00229662.
PIR	A41809.
RefSeq	NP_032624.1.
UniGene	Mm.440219
3D structure databases
HSSP	HSSP built from PDB template 1EH7 based on UniProtKB P16455.
SMR	P26187. Positions 5-185.
ModBase	Search...
PTM databases
PhosphoSite	P26187.
Proteomic databases
PRIDE	P26187.
Genome annotation databases
Ensembl	ENSMUSG00000054612. Mus musculus. [Contig view]
GeneID	17314.
KEGG	mmu:17314.
NMPDR	fig|10090.3.peg.17835.
Organism-specific databases
MGI	MGI:96977. Mgmt.
Phylogenomic databases
HOGENOM	P26187.
HOVERGEN	P26187.
OMA	P26187. CENGVHT.
Enzyme and pathway databases
BRENDA	2.1.1.63. 244.
Gene expression databases
ArrayExpress	P26187.
Bgee	P26187.
CleanEx	MM_MGMT.
GermOnline	ENSMUSG00000054612. Mus musculus.
Family and domain databases
InterPro	IPR001497. MethylDNA_cys_MeTrfase_AS. IPR014048. MethylDNA_cys_MeTrfase_DNA_bd. IPR008332. MethylG_MeTrfase. IPR011991. Wing_hlx_DNA_bd. [Graphical view]
Gene3D	G3DSA:1.10.10.10. Wing_hlx_DNA_bd. 1 hit.
PANTHER	PTHR10815. MethylDNA_cys_mtrans_DNA_bd. 1 hit.
Pfam	PF01035. DNA_binding_1. 1 hit. PF02870. Methyltransf_1N. 1 hit. [Graphical view]
TIGRFAMs	TIGR00589. ogt. 1 hit.
PROSITE	PS00374. MGMT. 1 hit. [Graphical view]
ProtoNet	Search...
Other Resources
NextBio	291876.
SOURCE	Search...

Entry information

Entry name

MGMT_MOUSE

Accession

Primary (citable) accession number: P26187
Secondary accession number(s): Q54A49

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 1, 1992
Last sequence update:	January 23, 2007
Last modified:	June 16, 2009
This is version 70 of the entry and version 3 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)