ID   MCRG_METJA     STANDARD;      PRT;   260 AA.
AC   Q58255;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   07-FEB-2006, entry version 33.
DE   Methyl-coenzyme M reductase I gamma subunit (EC 2.8.4.1) (Coenzyme-B
DE   sulfoethylthiotransferase gamma) (MCR I gamma).
GN   Name=mcrG; OrderedLocusNames=MJ0845;
OS   Methanococcus jannaschii.
OC   Archaea; Euryarchaeota; Methanococci; Methanococcales;
OC   Methanocaldococcaceae; Methanocaldococcus.
OX   NCBI_TaxID=2190;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JAL-1 / DSM 2661 / ATCC 43067;
RX   MEDLINE=96337999; PubMed=8688087;
RA   Bult C.J., White O., Olsen G.J., Zhou L., Fleischmann R.D.,
RA   Sutton G.G., Blake J.A., FitzGerald L.M., Clayton R.A., Gocayne J.D.,
RA   Kerlavage A.R., Dougherty B.A., Tomb J.-F., Adams M.D., Reich C.I.,
RA   Overbeek R., Kirkness E.F., Weinstock K.G., Merrick J.M., Glodek A.,
RA   Scott J.L., Geoghagen N.S.M., Weidman J.F., Fuhrmann J.L., Nguyen D.,
RA   Utterback T.R., Kelley J.M., Peterson J.D., Sadow P.W., Hanna M.C.,
RA   Cotton M.D., Roberts K.M., Hurst M.A., Kaine B.P., Borodovsky M.,
RA   Klenk H.-P., Fraser C.M., Smith H.O., Woese C.R., Venter J.C.;
RT   "Complete genome sequence of the methanogenic archaeon, Methanococcus
RT   jannaschii.";
RL   Science 273:1058-1073(1996).
CC   -!- FUNCTION: Reduction of methyl-coenzyme M (2-(methylthio)
CC       ethanesulfonic acid) with 7-mercaptoheptanoylthreonine phosphate
CC       to methane and an heterodisulfide (By similarity).
CC   -!- CATALYTIC ACTIVITY: 2-(methylthio)ethanesulfonate (methyl-CoM) +
CC       N-(7-mercaptoheptanoyl)threonine 3-O-phosphate (coenzyme B) = CoM-
CC       S-S-CoB + methane.
CC   -!- COFACTOR: Binds 2 coenzyme F430 noncovalently per hexamer.
CC       Coenzyme F430 is a yellow nickel porphinoid (By similarity).
CC   -!- PATHWAY: Methanogenesis; last step.
CC   -!- SUBUNIT: Hexamer of two alpha, two beta, and two gamma chains (By
CC       similarity).
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DR   EMBL; U67528; AAB98850.1; -; Genomic_DNA.
DR   PIR; E64405; E64405.
DR   HSSP; Q49604; 1E6V.
DR   TIGR; MJ0845; -.
DR   BioCyc; MJAN243232:MJ0845-MONOMER; -.
DR   InterPro; IPR003178; MCR_gamma.
DR   Pfam; PF02240; MCR_gamma; 1.
DR   PIRSF; PIRSF000264; Meth_CoM_rd_gama; 1.
DR   ProDom; PD005845; MCR_gamma; 1.
KW   Complete proteome; Methanogenesis; Transferase.
FT   CHAIN         1    260       Methyl-coenzyme M reductase I gamma
FT                                subunit.
FT                                /FTId=PRO_0000147476.
SQ   SEQUENCE   260 AA;  30174 MW;  34413840D8EADACE CRC64;
     MAYKPQFYPG QTKIAQNRRD HMNPDVQLEK LRDIPDDDVV KIMGHRQPGE DYKTVHPPLE
     EMDLPEDYVR DLVEPLNGAK EGHRIRYIQF TDSMYFAPAQ PYDRARTYMW RFRGVDTGTL
     SGRQVIEMRE SDLEALSKNF LIDTAFFDPA RIGIRGATVH GHSLRLDENG LMFDALQRYV
     YDEKTGHVLY VKDQVGRPLD EPVDVGEPLP EEKLKEITTI YRIDGVPMRE DEELLTVVKR
     IHRARTLGGF LPVEDVFEKL
//