Score = 64.3 bits (155), Expect = 2e-10, Method: Compositional matrix adjust.
Identities = 28/82 (34%), Positives = 51/82 (62%)
Query: 2 GKYHRILEPGLNILIPIIDKIKYVQSLKEIAIDVPQQSAITSDNVTLSIDGVLYLKINDP 61
G+Y + L+PGL++++P +D+I ++ E +D+P Q I+ DN ++ID V ++++ D
Sbjct: 35 GRYTKTLQPGLSLVVPFMDRIGRKINMMEQVLDIPSQEVISKDNANVTIDAVCFIQVIDA 94
Query: 62 YLASYGVEDPEFAITQLAQTTM 83
A+Y V + E AI L T +
Sbjct: 95 PRAAYEVSNLELAIINLTMTNI 116
Identified as a multi-copy suppressor of an FtsH/HtpX protease double disruption mutant. May play a role in the quality control of integral membrane proteins.
Escherichia coli (strain K12) (taxid: 83333)
Close Homologs in the Non-Redundant Database Detected by BLAST
cd03405, Band_7_HflC, Band_7_HflC: The band 7 doma
2e-04
>gnl|CDD|239497 cd03403, Band_7_stomatin_like, Band_7_stomatin_like: A subgroup of the band 7 domain of flotillin (reggie) like proteins similar to stomatin and podicin (two lipid raft-associated integral membrane proteins)
Score = 136 bits (346), Expect = 1e-42
Identities = 47/83 (56%), Positives = 60/83 (72%)
Query: 1 MGKYHRILEPGLNILIPIIDKIKYVQSLKEIAIDVPQQSAITSDNVTLSIDGVLYLKIND 60
+GKYHR L PGL+ +IP ID+I Y L+E +DVP Q IT DNVT+ +D VLY ++ D
Sbjct: 12 LGKYHRTLGPGLHFIIPFIDRIAYKVDLREQVLDVPPQEVITKDNVTVRVDAVLYYRVVD 71
Query: 61 PYLASYGVEDPEFAITQLAQTTM 83
P A YGVED +AI+QLAQTT+
Sbjct: 72 PVKAVYGVEDYRYAISQLAQTTL 94
Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Stomatin is widely expressed and, highly expressed in red blood cells. It localizes predominantly to the plasma membrane and to intracellular vesicles of the endocytic pathway, where it is present in higher order homo-oligomeric complexes (of between 9 and 12 monomers). Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and, is implicated in trafficking of Glut1 glucose transporters. Prohibitin is a mitochondrial inner-membrane protein hypothesized to act as a chaperone for the stabilization of mitochondrial proteins. Podicin localizes to the plasma membrane of podocyte foot processes and, is found in higher order oligomers. Podocin plays a role in regulating glomerular permeability. Mutations in the podicin gene give rise to autosomal recessive steroid resistant nephritic syndrome. This group also contains proteins similar to three Caenorhabditis elegans proteins: UNC-1, UNC-24 and, MEC-2. Mutations in the unc-1 and unc-24 genes result in abnormal motion and altered patterns of sensitivity to volatile anesthetics. MEC-2 and UNC-24 proteins interact with MEC-4 which is part of the degenerin channel complex required for response to gentle body touch. Length = 215
This group contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. Many of these band 7 domain-containing proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and are known to interact with a variety of proteins. Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and participates in trafficking of Glut1 glucose transporters. Prohibitin may act as a chaperone for the stabilization of mitochondrial proteins. Prokaryotic HflK/C plays a role in the decision between lysogenic and lytic cycle growth during lambda phage infection. Flotillins have been implicated in the progression of prion disease, in the pathogenesis of neurodegenerative diseases such as Parkinson's and Alzheimer's disease and, in cancer invasion and metastasis. Mutations in the podicin gene give rise to autosomal recessive steroid resistant nephritic syndrome. Length = 121
HflK and HflC are paralogs encoded by tandem genes in Proteobacteria, spirochetes, and some other bacterial lineages. The HflKC complex is anchored in the membrane and exposed to the periplasm. The complex is not active as a protease, but rather binds to and appears to modulate the ATP-dependent protease FtsH. The overall function of HflKC is not fully described.//Regulation of FtsH by HflKC appears to be negative (PMID:8947034,PMID:96367) [SS 8/27/03]. Length = 261
>gnl|CDD|216327 pfam01145, Band_7, SPFH domain / Band 7 family
Score = 55.5 bits (134), Expect = 3e-11
Identities = 22/86 (25%), Positives = 41/86 (47%), Gaps = 5/86 (5%)
Query: 2 GKYHRILEPGLNILIPIIDKIKYVQSLKEIAIDV-PQQSAITSDNVTLSIDGVLYLKIND 60
GK R+L PGL+ +P I I V + ++V + +T D V +++D + ++ D
Sbjct: 15 GKVSRVLGPGLHFKLPFIQTITVV-DTRLQTLEVTVDITVLTKDGVPVNVDVTVQYRVED 73
Query: 61 P---YLASYGVEDPEFAITQLAQTTM 83
P G ED + + L ++ +
Sbjct: 74 PAKLVANYTGEEDLQELLRPLVRSAL 99
This family has been called SPFH, Band 7 or PHB domain. Recent phylogenetic analysis has shown this domain to be a slipin or Stomatin-like integral membrane domain conserved from protozoa to mammals. Length = 177
>gnl|CDD|239498 cd03404, Band_7_HflK, Band_7_HflK: The band 7 domain of flotillin (reggie) like proteins
Score = 46.8 bits (112), Expect = 8e-08
Identities = 28/95 (29%), Positives = 47/95 (49%), Gaps = 14/95 (14%)
Query: 2 GKYHRILEPGLNILIP-IIDKIKYV----QSLKEIAIDVPQQSAITSDNVTLSIDG---- 52
GKY R +EPGL+ +P I+ ++ V I + V ++ +++ L+ D
Sbjct: 30 GKYSRTVEPGLHWKLPYPIEVVEVVPVFQLRSVGIPVRVGSVRSVPGESLMLTGDENIVD 89
Query: 53 ----VLYLKINDPYLASYGVEDPEFAITQLAQTTM 83
V Y +I+DPY + V DPE + Q A++ M
Sbjct: 90 VEFAVQY-RISDPYDYLFNVRDPEGTLRQAAESAM 123
This group includes proteins similar to prokaryotic HlfK (High frequency of lysogenization K). Although many members of the band 7 family are lipid raft associated, prokaryote plasma membranes lack cholesterol and are unlikely to have lipid raft domains. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Escherichia coli HflK is an integral membrane protein which may localize to the plasma membrane. HflK associates with another band 7 family member (HflC) to form an HflKC complex. HflKC interacts with FtsH in a large complex termed the FtsH holo-enzyme. FtsH is an AAA ATP-dependent protease which exerts progressive proteolysis against membrane-embedded and soluble substrate proteins. HflKC can modulate the activity of FtsH. HflKC plays a role in the decision between lysogenic and lytic cycle growth during lambda phage infection. Length = 266
>gnl|CDD|225177 COG2268, COG2268, Uncharacterized protein conserved in bacteria [Function unknown]
This subgroup contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. Many of these band 7 domain-containing proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and are known to interact with a variety of proteins. Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and participates in trafficking of Glut1 glucose transporters. Prohibitin may act as a chaperone for the stabilization of mitochondrial proteins. Prokaryotic HflK/C plays a role in the decision between lysogenic and lytic cycle growth during lambda phage infection. Flotillins have been implicated in the progression of prion disease, in the pathogenesis of neurodegenerative diseases such as Parkinson's and Alzheimer's disease and, in cancer invasion and metastasis. Mutations in the podicin gene give rise to autosomal recessive steroid resistant nephritic syndrome. Length = 262
>gnl|CDD|239499 cd03405, Band_7_HflC, Band_7_HflC: The band 7 domain of flotillin (reggie) like proteins
This group includes proteins similar to prokaryotic HlfC (High frequency of lysogenization C). Although many members of the band 7 family are lipid raft associated, prokaryote plasma membranes lack cholesterol and are unlikely to have lipid raft domains. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Escherichia coli HflC is an integral membrane protein which may localize to the plasma membrane. HflC associates with another band 7 family member (HflK) to form an HflKC complex. HflKC interacts with FtsH in a large complex termed the FtsH holo-enzyme. FtsH is an AAA ATP-dependent protease which exerts progressive proteolysis against membrane-embedded and soluble substrate proteins. HflKC can modulate the activity of FtsH. HflKC plays a role in the decision between lysogenic and lytic cycle growth during lambda phage infection. Length = 242
This subgroup contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. Many of these band 7 domain-containing proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and are known to interact with a variety of proteins. Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and participates in trafficking of Glut1 glucose transporters. Prohibitin may act as a chaperone for the stabilization of mitochondrial proteins. Prokaryotic H
This subgroup contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. Many of these band 7 domain-containing proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and are known to interact with a variety of proteins. Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and participates in trafficking of Glut1 glucose transporters. Prohibitin may act as a chaperone for the stabilization of mitochondrial proteins. Prokaryotic H
>cd03403 Band_7_stomatin_like Band_7_stomatin_like: A subgroup of the band 7 domain of flotillin (reggie) like proteins similar to stomatin and podicin (two lipid raft-associated integral membrane proteins)
Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Stomatin is widely expressed and, highly expressed in red blood cells. It localizes predominantly to the plasma membrane and to intracellular vesicles of the endocytic pathway, where it is present in higher order homo-oligomeric complexes (of between 9 and 12 monomers). Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and, is implicated in trafficking of Glut1 glucose transporters. Prohibitin is a mitochondrial inner-membrane protein hypothesized to act as a chaperone for the stabilization of mitochondrial proteins. Podicin local
HflK and HflC are paralogs encoded by tandem genes in Proteobacteria, spirochetes, and some other bacterial lineages. The HflKC complex is anchored in the membrane and exposed to the periplasm. The complex is not active as a protease, but rather binds to and appears to modulate the ATP-dependent protease FtsH. The overall function of HflKC is not fully described.//Regulation of FtsH by HflKC appears to be negative (PubMed:8947034,PubMed:96367)
HflK and HflC are paralogs encoded by tandem genes in Proteobacteria, spirochetes, and some other bacterial lineages. The HflKC complex is anchored in the membrane and exposed to the periplasm. The complex is not active as a protease, but rather binds to and appears to modulate the ATP-dependent protease FtsH. The overall function of HflKC is not fully described.//Regulation of FtsH protease appears to be negative (PubMed:8947034, PubMed:96367)
>cd03405 Band_7_HflC Band_7_HflC: The band 7 domain of flotillin (reggie) like proteins
This group includes proteins similar to prokaryotic HlfC (High frequency of lysogenization C). Although many members of the band 7 family are lipid raft associated, prokaryote plasma membranes lack cholesterol and are unlikely to have lipid raft domains. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Escherichia coli HflC is an integral membrane protein which may localize to the plasma membrane. HflC associates with another band 7 family member (HflK) to form an HflKC complex. HflKC interacts with FtsH in a large complex termed the FtsH holo-enzyme. FtsH is an AAA ATP-dependent protease which exerts progressive proteolysis against membrane-embedded and soluble substrate proteins. HflKC can modulate the activity of FtsH. HflKC plays a role in the decision between lysogenic and lytic cycle growth during la
This group includes proteins similar to prokaryotic HlfK (High frequency of lysogenization K). Although many members of the band 7 family are lipid raft associated, prokaryote plasma membranes lack cholesterol and are unlikely to have lipid raft domains. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Escherichia coli HflK is an integral membrane protein which may localize to the plasma membrane. HflK associates with another band 7 family member (HflC) to form an HflKC complex. HflKC interacts with FtsH in a large complex termed the FtsH holo-enzyme. FtsH is an AAA ATP-dependent protease which exerts progressive proteolysis against membrane-embedded and soluble substrate proteins. HflKC can modulate the activity of FtsH. HflKC plays a role in the decision between lysogenic and lytic cycle growth during la
>PF01145 Band_7: SPFH domain / Band 7 family; InterPro: IPR001107 Band 7 protein is an integral membrane protein which is thought to regulate cation conductance
A variety of proteins belong to this family. These include the prohibitins, cytoplasmic anti-proliferative proteins and stomatin, an erythrocyte membrane protein. Bacterial HflC protein also belongs to this family. Note: Band 4.1 (IPR021187 from INTERPRO) and Band 7 proteins refer to human erythrocyte membrane proteins separated by SDS polyacrylamide gels and stained with coomassie blue [].; PDB: 2RPB_A 3BK6_B 1WIN_A.
>cd03406 Band_7_3 A subgroup of the band 7 domain of flotillin (reggie) like proteins
This subgroup contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. Many of these band 7 domain-containing proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and are known to interact with a variety of proteins. Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and participates in trafficking of Glut1 glucose transporters. Prohibitin may act as a chaperone for the stabilization of mitochondrial proteins. Prokaryotic H
A subgroup of the band 7 domain of flotillin (reggie) like proteins. This subgroup group includes proteins similar to prohibitin (a lipid raft-associated integral membrane protein). Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. These microdomains in addition to being stable scaffolds may also be also dynamic units with their own regulatory functions. Prohibitin is a mitochondrial inner-membrane protein which may act as a chaperone for the stabilization of mitochondrial proteins. Human prohibitin forms a heter-oligomeric complex with Bap-37 (prohibitin 2, a band 7 domain carrying homologue). This complex may protect non-assembled membrane proteins against proteolysis by the m-AAA protease. Prohibitin and Bap-37 yeast homologues have been implicated in yeast longevity and, in the maintenance of mitochondrial morphology.
>cd03399 Band_7_flotillin Band_7_flotillin: a subgroup of the band 7 domain of flotillin (reggie) like proteins
This subgroup contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. These two proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and, interact with a variety of proteins. Flotillins may play a role in the progression of prion disease, in the pathogenesis of neurodegenerative diseases such as Parkinson's and Alzheimer's disease and, in cancer invasion and metastasis.
>cd03408 Band_7_5 A subgroup of the band 7 domain of flotillin (reggie) like proteins
This subgroup contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. Many of these band 7 domain-containing proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and are known to interact with a variety of proteins. Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and participates in trafficking of Glut1 glucose transporters. Prohibitin may act as a chaperone for the stabilization of mitochondrial proteins. Prokaryotic H
>cd03400 Band_7_1 A subgroup of the band 7 domain of flotillin (reggie) like proteins
This subgroup contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. Many of these band 7 domain-containing proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and are known to interact with a variety of proteins. Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and participates in trafficking of Glut1 glucose transporters. Prohibitin may act as a chaperone for the stabilization of mitochondrial proteins. Prokaryotic H
>cd02106 Band_7 The band 7 domain of flotillin (reggie) like proteins
This group contains proteins similar to stomatin, prohibitin, flotillin, HlfK/C and podicin. Many of these band 7 domain-containing proteins are lipid raft-associated. Individual proteins of this band 7 domain family may cluster to form membrane microdomains which may in turn recruit multiprotein complexes. Microdomains formed from flotillin proteins may in addition be dynamic units with their own regulatory functions. Flotillins have been implicated in signal transduction, vesicle trafficking, cytoskeleton rearrangement and are known to interact with a variety of proteins. Stomatin interacts with and regulates members of the degenerin/epithelia Na+ channel family in mechanosensory cells of Caenorhabditis elegans and vertebrate neurons and participates in trafficking of Glut1 glucose transporters. Prohibitin may act as a chaperone for the stabilization of mitochondrial proteins. Prokaryotic HflK/C plays a role i
>COG2268 Uncharacterized protein conserved in bacteria [Function unknown]
