ID MCRZ_METJA STANDARD; PRT; 260 AA. AC Q58255; DT 01-NOV-1997 (Rel. 35, Created) DT 01-NOV-1997 (Rel. 35, Last sequence update) DT 30-MAY-2000 (Rel. 39, Last annotation update) DE METHYL-COENZYME M REDUCTASE II GAMMA SUBUNIT (EC 1.8.-.-) (MCR II DE GAMMA). GN MRTG OR MJ0845. OS Methanococcus jannaschii. OC Archaea; Euryarchaeota; Methanococcales; Methanococcaceae; OC Methanococcus. OX NCBI_TaxID=2190; RN [1] RP SEQUENCE FROM N.A. 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: THIS ENZYME COMPLEX CATALYZES THE FINAL STEP IN CC METHANOGENESIS, WHICH IS THE TERMINAL STEP OF ANAEROBIC CC DEGRADATION OF BIOMASS (BY SIMILARITY). CC -!- CATALYTIC ACTIVITY: REDUCTION OF METHYL-COENZYME M (2-(METHYLTHIO) CC ETHANESULFONIC ACID) WITH 7-MERCAPTOHEPTANOYLTHREONINE PHOSPHATE CC TO METHANE AND AN HETERODISULFIDE (CH(3)-S-COM + H-S-HTP = CH(4) + CC COM-S-S-HTP). CC -!- COFACTOR: THE ENZYME COMPLEX BINDS TIGHTLY (BUT NOT COVALENTLY) CC TO TWO MOLECULES OF COENZYME F430. F430 IS A YELLOW NICKEL CC PORPHINOID (BY SIMILARITY). CC -!- SUBUNIT: HEXAMER OF TWO ALPHA, TWO BETA, AND TWO GAMMA CHAINS (BY CC SIMILARITY). CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; U67528; AAB98850.1; -. DR TIGR; MJ0845; -. KW Methanogenesis; Oxidoreductase; Multigene family. 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 //