Score = 119 bits (298), Expect = 6e-27, Method: Compositional matrix adjust.
Identities = 58/87 (66%), Positives = 68/87 (78%), Gaps = 1/87 (1%)
Query: 2 AMVRSGLLQTALRRVSSASSAPPKRGFASSAHHDDAYETAKWEKITYLGIATCTVLAFYN 61
A+VRS L + A+ R + +S PKR F+SSA HDDAYE AKWEKITYLGIA+CT LA Y
Sbjct: 4 AIVRSALSR-AVTRAAPKTSVAPKRNFSSSAGHDDAYEAAKWEKITYLGIASCTALAVYV 62
Query: 62 LSKGHPHYEEPPRYEYLHIRNKEFPWG 88
LSKGH H E+PP Y ++HIRNKEFPWG
Sbjct: 63 LSKGHHHGEDPPAYPHMHIRNKEFPWG 89
This protein is one of the nuclear-coded polypeptide chains of cytochrome c oxidase, the terminal oxidase in mitochondrial electron transport. Arabidopsis thaliana (taxid: 3702)
Close Homologs in the Non-Redundant Database Detected by BLAST
Score = 96 (38.9 bits), Expect = 5.0e-05, P = 5.0e-05
Identities = 27/81 (33%), Positives = 41/81 (50%)
Query: 14 RRVSSASSAPPKRGFASSAHHDDAYETAKWEKITYL----GIATCTVLAFYNLSKGHPHY 69
R + +A + P R A+SA H+ W+ ++++ + C +L Y L H H
Sbjct: 9 RLLPAAPGSVPARSMAASAAHEGG-GARLWKTLSFVVALPAVGVC-MLNCY-LKAQHEH- 64
Query: 70 EEPP--RYEYLHIRNKEFPWG 88
E P RY +L IR+K FPWG
Sbjct: 65 ERPEFIRYAHLRIRSKPFPWG 85
Score = 96 (38.9 bits), Expect = 5.0e-05, P = 5.0e-05
Identities = 25/61 (40%), Positives = 32/61 (52%)
Query: 32 AHHDDAYETAKWEKITYLGIATCTVLAFYNLSKGHP-H--YEEPPRYEY--LHIRNKEFP 86
AH+ A ET W+KI ++ C L Y K H H +E P EY L++RNK FP
Sbjct: 44 AHN--ASET--WKKIFFIASIPCLALTMYAAFKDHKKHMSHERPEHVEYAFLNVRNKPFP 99
Query: 87 W 87
W
Sbjct: 100 W 100
Score = 59.4 bits (144), Expect = 5e-13
Identities = 33/103 (32%), Positives = 44/103 (42%), Gaps = 18/103 (17%)
Query: 1 MAMVRSGLLQTALRRVSSASSA---PPKRGFASSAHHDDAYETAK-WEKITYL----GIA 52
M R RR +S+++A R + H A T K W+K++Y IA
Sbjct: 1 MFAQRLRAPAQTQRRFASSAAAGGNAFVREREAVKEH--AEGTTKLWKKLSYYVAIPAIA 58
Query: 53 TCTVLAFYNLSKGHPHY-------EEPPRYEYLHIRNKEFPWG 88
C + A Y L H + EE YEY +IR K FPWG
Sbjct: 59 LCAINA-YFLEAEHAEHREHLPDREEFVEYEYQNIRTKPFPWG 100
Length = 116
>gnl|CDD|238465 cd00925, Cyt_c_Oxidase_VIa, Cytochrome c oxidase subunit VIa
Score = 49.7 bits (119), Expect = 2e-09
Identities = 22/65 (33%), Positives = 28/65 (43%), Gaps = 7/65 (10%)
Query: 29 ASSAHHDDAYETAKWEKITYLGIATCTVLAFYNLSKGHPHYEEPPR-----YEYLHIRNK 83
A H E W+KI++ L N H +EE R YE+L+IR K
Sbjct: 4 AKGEHAAGTSEL--WKKISFYVALPAVALCMLNAYLKHKEHEEHERPEFVEYEHLNIRTK 61
Query: 84 EFPWG 88
FPWG
Sbjct: 62 PFPWG 66
Cytochrome c oxidase (CcO), the terminal oxidase in the respiratory chains of eukaryotes and most bacteria, is a multi-chain transmembrane protein located in the inner membrane of mitochondria and the cell membrane of prokaryotes. It catalyzes the reduction of O2 and simultaneously pumps protons across the membrane. The number of subunits varies from three to five in bacteria and up to 13 in mammalian mitochondria. Subunits I, II, and III of mammalian CcO are encoded within the mitochondrial genome and the remaining 10 subunits are encoded within the nuclear genome. Found only in eukaryotes, subunit VIa is expressed in two tissue-specific isoforms in mammals but not fish. VIa-H is the heart and skeletal muscle isoform; VIa-L is the liver or non-muscle isoform. Mammalian VIa-H induces a slip in CcO (decrease in proton/electron stoichiometry) at high intramitochondrial ATP/ADP ratios, while VIa-L induces a permanent slip in CcO, depending on the presence of cardiolipin and palmitate. Length = 86
Cytochrome c oxidase (CcO), the terminal oxidase in the respiratory chains of eukaryotes and most bacteria, is a multi-chain transmembrane protein located in the inner membrane of mitochondria and the cell membrane of prokaryotes. It catalyzes the reduction of O2 and simultaneously pumps protons across the membrane. The number of subunits varies from three to five in bacteria and up to 13 in mammalian mitochondria. Subunits I, II, and III of mammalian CcO are encoded within the mitochondrial genome and the remaining 10 subunits are encoded within the nuclear genome. Found only in eukaryotes, subunit VIa is expressed in two tissue-specific isoforms in mammals but not fish. VIa-H is the heart and skeletal muscle isoform; VIa-L is the liver or non-muscle isoform. Mammalian VIa-H induces a slip in CcO (decrease in proton/electron stoichiometry) at high intramitochondrial ATP/ADP ratios, while VIa-L induces a permanent slip i
>PF02046 COX6A: Cytochrome c oxidase subunit VIa; InterPro: IPR001349 Cytochrome c oxidase (1
9.3.1 from EC) is an oligomeric enzymatic complex which is a component of the respiratory chain complex and is involved in the transfer of electrons from cytochrome c to oxygen []. In eukaryotes this enzyme complex is located in the mitochondrial inner membrane; in aerobic prokaryotes it is found in the plasma membrane. In eukaryotes, in addition to the three large subunits, I, II and III, that form the catalytic centre of the enzyme complex, there are a variable number of small polypeptidic subunits. One of these subunits is known as VIa in vertebrates and fungi. Mammals have two tissue-specific isoforms of VIa, a liver and a heart form. Only one form is found in fish [].; GO: 0004129 cytochrome-c oxidase activity, 0005743 mitochondrial inner membrane, 0005751 mitochondrial respiratory chain complex IV; PDB: 2DYR_G 2EIM_G 2Y69_T 1OCC_G 3AG4_G 3AG2_G 3ASN_G 3ABL_G 1V55_T 2EIJ_T ....
>KOG3469 consensus Cytochrome c oxidase, subunit VIa/COX13 [Energy production and conversion]
Cytochrome C oxidase polypeptide VIA-heart; oxidor
99.97
>2y69_G Cytochrome C oxidase polypeptide 6A2; electron transport, complex IV, proton pumps, membrane prote; HET: TPO HEA CHD PEK PGV DMU; 1.95A {Bos taurus}
class: Membrane and cell surface proteins and peptides
fold: Single transmembrane helix
superfamily: Mitochondrial cytochrome c oxidase subunit VIa
family: Mitochondrial cytochrome c oxidase subunit VIa
domain: Mitochondrial cytochrome c oxidase subunit VIa
species: Cow (Bos taurus) [TaxId: 9913]
Score = 69.7 bits (171), Expect = 5e-18
Identities = 20/63 (31%), Positives = 25/63 (39%), Gaps = 3/63 (4%)
Query: 29 ASSAHHDDAYETAK-WEKITYLGIATCTVLAFYNLSKGHPHYEEP--PRYEYLHIRNKEF 85
AS+A D A+ W +T+ L N H E P Y +L IR K F
Sbjct: 1 ASAAKGDHGGTGARTWRFLTFGLALPSVALCTLNSWLHSGHRERPAFIPYHHLRIRTKPF 60
Query: 86 PWG 88
WG
Sbjct: 61 SWG 63
class: Membrane and cell surface proteins and peptides
fold: Single transmembrane helix
superfamily: Mitochondrial cytochrome c oxidase subunit VIa
family: Mitochondrial cytochrome c oxidase subunit VIa
domain: Mitochondrial cytochrome c oxidase subunit VIa
species: Cow (Bos taurus) [TaxId: 9913]
