Voltage-dependent high-conductance channel with a slightly cation-selectivity; selective for amino acids but excludes triosephosphates or uncharged sugars (By similarity). Non-essential amino acid-selective channel protein and translocation pore for NADPH:protochlorophyllide oxidoreductase A (PORA) and possibly PORB. Arabidopsis thaliana (taxid: 3702)
Score = 54.7 bits (130), Expect = 2e-07, Method: Compositional matrix adjust.
Identities = 32/80 (40%), Positives = 46/80 (57%), Gaps = 8/80 (10%)
Query: 40 KRGLSGITRASFVAKSIGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRR 99
+RG+S AK+ +V +FS T C ++ YR ++DW N++I+G +TG AI
Sbjct: 120 QRGMS-------YAKNFAIVGAMFSCTECLVESYRGKSDWKNSVISGCITGGAIGFRAGL 172
Query: 100 WTQVIGVAGIVSAFSAAADY 119
VIG G +AFSAA DY
Sbjct: 173 KAGVIGCGGF-AAFSAAIDY 191
Essential core component of the TIM22 complex, a complex that mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane. In the TIM22 complex, it constitutes the voltage-activated and signal-gated channel. Forms a twin-pore translocase that uses the membrane potential as external driving force in 2 voltage-dependent steps.
Score = 52.8 bits (125), Expect = 6e-07, Method: Compositional matrix adjust.
Identities = 31/80 (38%), Positives = 45/80 (56%), Gaps = 8/80 (10%)
Query: 40 KRGLSGITRASFVAKSIGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRR 99
+RG+S AK+ +V +FS T C ++ YR ++DW N++I+G +TG AI
Sbjct: 118 QRGMS-------YAKNFAIVGAMFSCTECLVESYRGKSDWKNSVISGCITGGAIGFRAGV 170
Query: 100 WTQVIGVAGIVSAFSAAADY 119
IG G +AFSAA DY
Sbjct: 171 KAGAIGCGGF-AAFSAAIDY 189
Essential core component of the TIM22 complex, a complex that mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane. In the TIM22 complex, it constitutes the voltage-activated and signal-gated channel. Forms a twin-pore translocase that uses the membrane potential as external driving force in 2 voltage-dependent steps.
Score = 52.8 bits (125), Expect = 6e-07, Method: Compositional matrix adjust.
Identities = 32/80 (40%), Positives = 44/80 (55%), Gaps = 8/80 (10%)
Query: 40 KRGLSGITRASFVAKSIGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRR 99
+RG+S AK+ +V +FS T C I+ YR +DW N++I+G +TG AI
Sbjct: 120 QRGMS-------YAKNFAIVGAMFSCTECLIESYRGTSDWKNSVISGCITGGAIGFRAGL 172
Query: 100 WTQVIGVAGIVSAFSAAADY 119
IG G +AFSAA DY
Sbjct: 173 KAGAIGCGGF-AAFSAAIDY 191
Essential core component of the TIM22 complex, a complex that mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane. In the TIM22 complex, it constitutes the voltage-activated and signal-gated channel. Forms a twin-pore translocase that uses the membrane potential as external driving force in 2 voltage-dependent steps.
Score = 52.8 bits (125), Expect = 7e-07, Method: Compositional matrix adjust.
Identities = 31/80 (38%), Positives = 45/80 (56%), Gaps = 8/80 (10%)
Query: 40 KRGLSGITRASFVAKSIGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRR 99
+RG+S AK+ +V +FS T C ++ YR ++DW N++I+G +TG AI
Sbjct: 120 QRGMS-------YAKNFAIVGAMFSCTECLVESYRGKSDWKNSVISGCITGGAIGFRAGV 172
Query: 100 WTQVIGVAGIVSAFSAAADY 119
IG G +AFSAA DY
Sbjct: 173 KAGAIGCGGF-AAFSAAIDY 191
Essential core component of the TIM22 complex, a complex that mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane. In the TIM22 complex, it constitutes the voltage-activated and signal-gated channel. Forms a twin-pore translocase that uses the membrane potential as external driving force in 2 voltage-dependent steps.
Score = 52.0 bits (123), Expect = 1e-06, Method: Compositional matrix adjust.
Identities = 27/72 (37%), Positives = 41/72 (56%), Gaps = 1/72 (1%)
Query: 48 RASFVAKSIGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRRWTQVIGVA 107
R AK+ +V +FS T C ++ YR ++DW N++++G +TG AI V+G
Sbjct: 111 RGMSYAKNFAIVGAMFSCTECLVESYRGKSDWKNSVMSGCITGGAIGFRAGLKAGVLGCG 170
Query: 108 GIVSAFSAAADY 119
G +AFSA DY
Sbjct: 171 GF-AAFSAVIDY 181
Essential core component of the TIM22 complex, a complex that mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane. In the TIM22 complex, it constitutes the voltage-activated and signal-gated channel. Forms a twin-pore translocase that uses the membrane potential as external driving force in 2 voltage-dependent steps.
Score = 51.2 bits (121), Expect = 2e-06, Method: Compositional matrix adjust.
Identities = 32/77 (41%), Positives = 44/77 (57%), Gaps = 2/77 (2%)
Query: 48 RASFVAKSIGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRRWTQVIGVA 107
RA AK+ G + GVFS T C I+ R +ND N + AG +TG +A ++G A
Sbjct: 99 RAWSSAKNFGFIGGVFSGTECCIESLRAKNDIWNGVAAGCLTGGGLAVKAGPQAALVGCA 158
Query: 108 GIVSAFSAAAD-YSRTN 123
G +AFSAA D Y R++
Sbjct: 159 GF-AAFSAAIDVYMRSD 174
Essential core component of the TIM22 complex, a complex that mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane. In the TIM22 complex, it constitutes the voltage-activated and signal-gated channel. Forms a twin-pore translocase that uses the membrane potential as external driving force in 2 voltage-dependent steps.
Yarrowia lipolytica (strain CLIB 122 / E 150) (taxid: 284591)
Score = 50.8 bits (120), Expect = 2e-06, Method: Compositional matrix adjust.
Identities = 27/72 (37%), Positives = 40/72 (55%), Gaps = 1/72 (1%)
Query: 48 RASFVAKSIGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRRWTQVIGVA 107
R AK+ +V +FS T C ++ YR ++DW N++I+G +TG AI +G
Sbjct: 113 RGMSYAKNFAIVGAMFSCTECLVESYRGKSDWKNSVISGCITGGAIGFRAGLKAGALGCG 172
Query: 108 GIVSAFSAAADY 119
G +AFSA DY
Sbjct: 173 GF-AAFSAVIDY 183
Essential core component of the TIM22 complex, a complex that mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane. In the TIM22 complex, it constitutes the voltage-activated and signal-gated channel. Forms a twin-pore translocase that uses the membrane potential as external driving force in 2 voltage-dependent steps.
Score = 50.1 bits (118), Expect = 4e-06, Method: Compositional matrix adjust.
Identities = 34/108 (31%), Positives = 49/108 (45%), Gaps = 7/108 (6%)
Query: 10 PCSSLAVDAILRIGTAGAIWGLCAGPQLARKRGLSGITRASFVAKSI-------GLVAGV 62
P +L VDA L+IG G L A +G + K + G GV
Sbjct: 24 PFLNLTVDAFLKIGAVGVTKSLAEDTYKAIDKGSLSKSTLEHALKKLCKEGVYWGAAGGV 83
Query: 63 FSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRRWTQVIGVAGIV 110
+ T GI+R R DW NA++AGA TGA ++A ++ I + I+
Sbjct: 84 YIGTEYGIERIRGSRDWKNAMLAGAATGAVLSAVGKKGKDTIVIDAIL 131
Voltage-dependent high-conductance channel with a slightly cation-selectivity; selective for amino acids but excludes triosephosphates or uncharged sugars (By similarity). Non-essential amino acid-selective channel protein and translocation pore for NADPH:protochlorophyllide oxidoreductase A (PORA) and possibly PORB. Involved in PORA precursor (pPORA) import and thus confers photoprotection onto etiolated seedlings during greening.
Score = 47.8 bits (112), Expect = 2e-05, Method: Compositional matrix adjust.
Identities = 30/80 (37%), Positives = 42/80 (52%), Gaps = 2/80 (2%)
Query: 40 KRGLSGITRASF-VAKSIGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTR 98
K G + + S+ AK+ V +FS CGI+ R +ND N + AG +TGA +A
Sbjct: 106 KHGFKDMGQRSYSTAKNFAKVGALFSGIECGIEGLRAKNDLGNGVAAGCLTGAILAKNGG 165
Query: 99 RWTQVIGVAGIVSAFSAAAD 118
+G AG +AFSAA D
Sbjct: 166 PQAAAVGCAGF-AAFSAAID 184
Essential core component of the TIM22 complex, a complex that mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane. In the TIM22 complex, it constitutes the voltage-activated and signal-gated channel. Forms a twin-pore translocase that uses the membrane potential as external driving force in 2 voltage-dependent steps.
Score = 59.6 bits (145), Expect = 1e-12
Identities = 30/124 (24%), Positives = 49/124 (39%), Gaps = 15/124 (12%)
Query: 10 PCSSLAVDAILRIGTAGAIWGLCAG---------PQLARKRGLSGI-----TRASFVAKS 55
PC V GA++G G K L+G+ R +
Sbjct: 1 PCPERIVYDTGGGFLMGAVYGGFFGAPHGLVNALRSGPLKLRLNGVLNATGRRGPSHGNN 60
Query: 56 IGLVAGVFSSTRCGIQRYRKQNDWVNALIAGAVTGAAIAAGTRRWTQVIGVAGIVSAFSA 115
+ G++S C +++ R + D N++IAGA+TGA + A + +AFSA
Sbjct: 61 FAVFGGLYSGIECALEKLRGKEDPWNSIIAGALTGAVLGL-RGGPKAAAVGAAVGAAFSA 119
Query: 116 AADY 119
A +
Sbjct: 120 AIEG 123
The pre-protein translocase of the mitochondrial outer membrane (Tom) allows the import of pre-proteins from the cytoplasm. Tom forms a complex with a number of proteins, including Tim17. Tim17 and Tim23 are thought to form the translocation channel of the inner membrane. This family includes Tim17, Tim22 and Tim23. This family also includes Pmp24 a peroxisomal protein. The involvement of this domain in the targeting of PMP24 remains to be proved. PMP24 was known as Pmp27 in. Length = 128
>PF02466 Tim17: Tim17/Tim22/Tim23/Pmp24 family; InterPro: IPR003397 The membrane-embedded multi-protein complexes of mitochondria mediate the transport of nuclear-encoded proteins across and into the outer or inner mitochondrial membranes []
The TOM (translocase of the outer mitochondrial membrane) complex consists of cytosol-exposed receptors and a pore-forming core, and mediates the transport of proteins from the cytosol across and into the outer mitochondrial membrane. A novel protein complex in the outer membrane of mitochondria, called the SAM complex (sorting and assembly machinery), is involved in the biogenesis of beta-barrel proteins of the outer membrane. Two translocases of the inner mitochondrial membrane (TIM22 and TIM23 complexes) mediate protein transport at the inner membrane. The TIM23 complex (a presequence translocase) mediates the transport of presequence-containing proteins across and into the inner membrane. Tim23 and Tim17 form part of this complex. Tim23 forms a pore in the inner membrane. The role of Tim17 is not yet fully understood. The TIM22 complex (a twin-pore carrier translocase) catalyses the insertion of multi-spanning proteins that have internal targeting signals into the inner membrane. The TIM22 complex mediates the membrane insertion of multi-spanning inner-membrane proteins that have internal targeting signals, and it uses the membrane potential as an external driving force. The Tim22 subunit of the mitochondrial import inner membrane translocase is included in this family. This family also includes Pmp24, a peroxisomal membrane protein, and NADH ubiquinone dehydrogenase 1 alpha subunit 11. Pmp24 was previously known as Pmp27 [].
>PF10247 Romo1: Reactive mitochondrial oxygen species modulator 1; InterPro: IPR018450 The majority of endogenous reactive oxygen species (ROS) in cells are produced by the mitochondrial respiratory chain
An increase or imbalance in ROS alters the intracellular redox homeostasis, triggers DNA damage, and may contribute to cancer development and progression. This entry contains the mitochondrial protein, reactive oxygen species modulator 1 (Romo1), that is responsible for increasing the level of ROS in cells. In various cancer cell lines with elevated levels of ROS there is also an increased abundance of Romo1 []. Increased Romo1 expression can have a number of other affects including: inducing premature senescence of cultured human fibroblasts [, ] and increased resistance to 5-fluorouracil [].
>KOG4096 consensus Uncharacterized conserved protein [Function unknown]
