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Description:
Methylated-DNA--protein-cysteine methyltransferase (EC 2.1.1.63) (6-O-methylguanine-DNA methyltransferase) (MGMT) (O-6-methylguanine-DNA-alkyltransferase).
Molecular weight: 17037
View which proteins in this organism that is involved with DNA Repair;
classified after biological processes (using data from the GOA project):
DNA repair( GO:0006281 ) DNA dealkylation( GO:0006307 )
Important dates:
10-MAY-2004, integrated into UniProtKB/Swiss-Prot.
01-OCT-2001, sequence version 1.
07-MAR-2006, entry version 21.
Phylogenetic order:
Archaea Crenarchaeota Thermoprotei Sulfolobales Sulfolobaceae Sulfolobus.
To calculate the pI (Isoelectric point - the pH where a protein has a neutral charge),
go to this page and enter the protein ID (e.g 3MG_ECOLI): http://us.expasy.org/tools/pi_tool.html
Links to references in other databases for protein OGT_SULSO:
| Database | Pointer | Add. info#1 | Add. info#2 |
| EMBL | AE006847 | AAK42623.1 | - |
| PIR | H90420 | H90420. | |
| HSSP | O74023 | 1MGT | |
| GenomeReviews | AE006641_GR | SSO2487.1 | |
| BioCyc | SSOL2287:SSO2487-MONOMER | -.1 | |
| HAMAP | MF_00772 | - | 1. |
| InterPro | IPR001497 | Methyltransf_1. | |
| InterPro | IPR011991 | Wing_hlx_DNA_bd. | |
| Pfam | PF01035 | DNA_binding_1 | 1. |
| TIGRFAMs | TIGR00589 | ogt | 1. |
| PROSITE | PS00374 | MGMT | 1. |
Keywords:
Complete proteome; DNA damage; DNA repair; Methyltransferase; Transferase.
References:
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 35092 / DSM 1617 / P2;
RX MEDLINE=21332296; PubMed=11427726; DOI=10.1073/pnas.141222098;
RA She Q., Singh R.K., Confalonieri F., Zivanovic Y., Allard G.,
RA Awayez M.J., Chan-Weiher C.C.-Y., Clausen I.G., Curtis B.A.,
RA De Moors A., Erauso G., Fletcher C., Gordon P.M.K.,
RA Heikamp-de Jong I., Jeffries A.C., Kozera C.J., Medina N., Peng X.,
RA Thi-Ngoc H.P., Redder P., Schenk M.E., Theriault C., Tolstrup N.,
RA Charlebois R.L., Doolittle W.F., Duguet M., Gaasterland T.,
RA Garrett R.A., Ragan M.A., Sensen C.W., Van der Oost J.;
RT "The complete genome of the crenarchaeon Sulfolobus solfataricus P2.";
RL Proc. Natl. Acad. Sci. U.S.A. 98:7835-7840(2001).
Feature:
CHAIN 1 151 Methylated-DNA--protein-cysteine
methyltransferase.
/FTId=PRO_0000139387.
ACT_SITE 119 119 Alkyl group acceptor (By similarity).
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 (By
similarity).
-!- CATALYTIC ACTIVITY: DNA (containing 6-O-methylguanine) + protein
L-cysteine = DNA (without 6-O-methylguanine) + protein S-methyl-L-
cysteine.
-!- SUBCELLULAR LOCATION: Cytoplasm (By similarity).
-!- SIMILARITY: Belongs to the MGMT family.
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Sequence length: 151
MLVYGLYKSP LGYITVAKDD KGFIMLDFCD CVEGNSRDDS SFTEFFHKLD LYFEGKPINL
REPINLKTYP FRLSVFKEVM KIPWGKVMTY KQIADSLGTS PRAVGMALSK NPILLIIPCH
RVIAENGIGG YSRGVKLKRA LLELEGVKIP E