Description:
Methylated-DNA--protein-cysteine methyltransferase (EC 2.1.1.63) (6-O-methylguanine-DNA methyltransferase) (MGMT) (O-6-methylguanine-DNA-alkyltransferase).
Molecular weight: 17795
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 )
Important dates:
01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
01-OCT-1996, sequence version 1.
07-MAR-2006, entry version 36.
Phylogenetic order:
Bacteria Actinobacteria Actinobacteridae Actinomycetales Corynebacterineae Mycobacteriaceae Mycobacterium.
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_MYCLE:
| Database | Pointer | Add. info#1 | Add. info#2 |
| EMBL | U00014 | AAA50905.1 | - |
| EMBL | AL583920 | CAC31532.1 | - |
| PIR | S72810 | S72810. | |
| HSSP | P06134 | 1SFE | |
| GenomeReviews | AL450380_GR | ML1151.1 | |
| Leproma | ML1151 | -. | |
| BioCyc | MLEP1769:ML1151-MONOMER | -.1 | |
| InterPro | IPR008332 | MethylG_mtfrase. | |
| InterPro | IPR001497 | Methyltransf_1. | |
| InterPro | IPR011991 | Wing_hlx_DNA_bd. | |
| Pfam | PF01035 | DNA_binding_1 | 1. |
| Pfam | PF02870 | Methyltransf_1N | 1. |
| TIGRFAMs | TIGR00589 | ogt | 1. |
| PROSITE | PS00374 | MGMT | 1. |
Keywords:
Complete proteome; DNA damage; DNA repair; Methyltransferase; Transferase.
References:
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Smith D.R., Robison K.;
RL Submitted (MAR-1994) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TN;
RX MEDLINE=21128732; PubMed=11234002; DOI=10.1038/35059006;
RA Cole S.T., Eiglmeier K., Parkhill J., James K.D., Thomson N.R.,
RA Wheeler P.R., Honore N., Garnier T., Churcher C.M., Harris D.E.,
RA Mungall K.L., Basham D., Brown D., Chillingworth T., Connor R.,
RA Davies R.M., Devlin K., Duthoy S., Feltwell T., Fraser A., Hamlin N.,
RA Holroyd S., Hornsby T., Jagels K., Lacroix C., Maclean J., Moule S.,
RA Murphy L.D., Oliver K., Quail M.A., Rajandream M.A., Rutherford K.M.,
RA Rutter S., Seeger K., Simon S., Simmonds M., Skelton J., Squares R.,
RA Squares S., Stevens K., Taylor K., Whitehead S., Woodward J.R.,
RA Barrell B.G.;
RT "Massive gene decay in the leprosy bacillus.";
RL Nature 409:1007-1011(2001).
Feature:
CHAIN 1 165 Methylated-DNA--protein-cysteine
methyltransferase.
/FTId=PRO_0000139367.
ACT_SITE 126 126 Alkyl group acceptor (Potential).
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.
-!- SIMILARITY: Belongs to the MGMT family.
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Sequence length: 165
MIHCRSMDSP IGPLILAGHG SVLTNLQMVD QTYEPSRVGW LPENGAFAEA VSQLDAYFAG
ELTEFAIELD LCGTEFQQRV WQALLTIPYG ETRSYGEIAE QVGAPGAARA VGLANSRNPI
AIIVPCHRVI GASGQLIGYG GGLNRKLTLL ELEKHQVLTS LTLFD