pfam02321, OEP, Outer membrane efflux protein. The OEP family (Outer membrane efflux protein) form trimeric channels that allow export of a variety of substrates in Gram negative bacteria. Each member of this family is composed of two repeats. The trimeric channel is composed of a 12 stranded all beta sheet barrel that spans the outer membrane, and a long all helical barrel that spans the periplasm.
cd09725, Cas2_I_II_III, CRISPR/Cas system-associated protein Cas2. CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) and associated Cas proteins comprise a system for heritable host defense by prokaryotic cells against phage and other foreign DNA; Cas2 is present in majority of CRISPR/Cas systems along with Cas1; RNAse specific to U-rich regions; Possesses an RRM/ferredoxin fold.
TIGR01730, COG0845:_Membrane-fusion_protein, RND family efflux transporter, MFP subunit. This model represents the MFP (membrane fusion protein) component of the RND family of transporters. RND refers to Resistance, Nodulation, and cell Division. It is, in part, a subfamily of pfam00529 (Pfam release 7.5) but hits substantial numbers of proteins missed by that model. The related HlyD secretion protein, for which pfam00529 is named, is outside the scope of this model. Attributed functions imply outward transport. These functions include nodulation, acriflavin resistance, heavy metal efflux, and multidrug resistance proteins. Most members of this family are found in Gram-negative bacteria. The proposed function of MFP proteins is to bring the inner and outer membranes together and enable transport to the outside of the outer membrane. Note, however, that a few members of this family are found in Gram-positive bacteria, where there is no outer membrane. [Transport and binding proteins, Unknown substrate].
pfam01930, Cas_Cas4, Domain of unknown function DUF83. This domain has no known function. The domain contains three conserved cysteines at its C-terminus.
cd13831, HU, histone-like DNA-binding protein HU. This subfamily includes HU and HU-like domains. HU is a conserved nucleoid-associated protein (NAP) which binds non-specifically to duplex DNA with a particular preference for targeting nicked and bent DNA. It is highly basic and contributes to chromosomal compaction and maintenance of negative supercoiling, thus often referred to as histone-like protein. HU can induce DNA bends, condense DNA in a fiber and also interact with single stranded DNA. It contains two homologous subunits, alpha and beta, typically forming homodimers (alpha-alpha and beta-beta), except in E. coli and other enterobacteria, which form heterodimers (alpha-beta). In E. coli, HU binds uniformly to the chromosome, with a preference for damaged or distorted DNA structures and can introduce negative supercoils into closed circular DNA in the presence of topoisomerase I. Anabaena HU (AHU) shows preference for A/T-rich region in the center of its DNA binding site.
cd07117, ALDH_StaphAldA1, Uncharacterized Staphylococcus aureus AldA1 (SACOL0154) aldehyde dehydrogenase-like. Uncharacterized aldehyde dehydrogenase from Staphylococcus aureus (AldA1, locus SACOL0154) and other similar sequences are present in this CD.
pfam03883, H2O2_YaaD, Peroxide stress protein YaaA. YaaA is a key element of the stress response to H2O2. It acts by reducing the level of intracellular iron levels after peroxide stress, thereby attenuating the Fenton reaction and the DNA damage that this would cause. The molecular mechanism of action is not known.
COG0745, OmpR, Response regulators consisting of a CheY-like receiver domain and a winged-helix DNA-binding domain [Signal transduction mechanisms / Transcription].
TIGR03641, cas1_HMARI, CRISPR-associated endonuclease Cas1, subtype I-B/HMARI/TNEAP. The CRISPR-associated protein Cas1 is virtually universal to CRISPR systems. CRISPR, an acronym for Clustered Regularly Interspaced Short Palindromic Repeats, is prokaryotic immunity system for foreign DNA, mostly from phage. CRISPR systems belong to different subtypes, distinguished by both nature of the repeats, the makeup of the cohort of associated Cas proteins, and by molecular phylogeny within the more universal Cas proteins such as this one. This model is of type EXCEPTION and provides more specific information than the EQUIVALOG model TIGR00287. It describes Cas1 subgroup that includes Cas1 proteins of the related HMARI and TNEAP subtypes of CRISPR/Cas system.
pfam02321, OEP, Outer membrane efflux protein. The OEP family (Outer membrane efflux protein) form trimeric channels that allow export of a variety of substrates in Gram negative bacteria. Each member of this family is composed of two repeats. The trimeric channel is composed of a 12 stranded all beta sheet barrel that spans the outer membrane, and a long all helical barrel that spans the periplasm.
TIGR02592, hypothetical_protein_CTC_01466, CRISPR-associated protein Cas5, subtype I-B/HMARI. This is a CRISPR-associated protein unique to the hmari subtype of cas genes and CRISPR repeat, which is the only subtype present in Haloarcula marismortui ATCC 43049. The hmari type, though uncommon, is also found in the Aquificae, Thermotogae, Firmicutes, and Dictyoglomi.
cd09725, Cas2_I_II_III, CRISPR/Cas system-associated protein Cas2. CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) and associated Cas proteins comprise a system for heritable host defense by prokaryotic cells against phage and other foreign DNA; Cas2 is present in majority of CRISPR/Cas systems along with Cas1; RNAse specific to U-rich regions; Possesses an RRM/ferredoxin fold.
pfam03883, H2O2_YaaD, Peroxide stress protein YaaA. YaaA is a key element of the stress response to H2O2. It acts by reducing the level of intracellular iron levels after peroxide stress, thereby attenuating the Fenton reaction and the DNA damage that this would cause. The molecular mechanism of action is not known.
cd09730, Cas8a1_I-A, CRISPR/Cas system-associated protein Cas8a1. CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) and associated Cas proteins comprise a system for heritable host defense by prokaryotic cells against phage and other foreign DNA; Large proteins, some contain Zn-finger domain; signature gene for I-A subtype; also known as TM1802 family.
pfam01930, Cas_Cas4, Domain of unknown function DUF83. This domain has no known function. The domain contains three conserved cysteines at its C-terminus.
cd13831, HU, histone-like DNA-binding protein HU. This subfamily includes HU and HU-like domains. HU is a conserved nucleoid-associated protein (NAP) which binds non-specifically to duplex DNA with a particular preference for targeting nicked and bent DNA. It is highly basic and contributes to chromosomal compaction and maintenance of negative supercoiling, thus often referred to as histone-like protein. HU can induce DNA bends, condense DNA in a fiber and also interact with single stranded DNA. It contains two homologous subunits, alpha and beta, typically forming homodimers (alpha-alpha and beta-beta), except in E. coli and other enterobacteria, which form heterodimers (alpha-beta). In E. coli, HU binds uniformly to the chromosome, with a preference for damaged or distorted DNA structures and can introduce negative supercoils into closed circular DNA in the presence of topoisomerase I. Anabaena HU (AHU) shows preference for A/T-rich region in the center of its DNA binding site.
cd07117, ALDH_StaphAldA1, Uncharacterized Staphylococcus aureus AldA1 (SACOL0154) aldehyde dehydrogenase-like. Uncharacterized aldehyde dehydrogenase from Staphylococcus aureus (AldA1, locus SACOL0154) and other similar sequences are present in this CD.
cd09690, Cas7_I-B, CRISPR/Cas system-associated RAMP superfamily protein Cas7. CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) and associated Cas proteins comprise a system for heritable host defense by prokaryotic cells against phage and other foreign DNA; Cas7 is a RAMP superfamily protein; Subunit of the Cascade complex; also known as Csh2 family.
COG0745, OmpR, Response regulators consisting of a CheY-like receiver domain and a winged-helix DNA-binding domain [Signal transduction mechanisms / Transcription].
TIGR03641, cas1_HMARI, CRISPR-associated endonuclease Cas1, subtype I-B/HMARI/TNEAP. The CRISPR-associated protein Cas1 is virtually universal to CRISPR systems. CRISPR, an acronym for Clustered Regularly Interspaced Short Palindromic Repeats, is prokaryotic immunity system for foreign DNA, mostly from phage. CRISPR systems belong to different subtypes, distinguished by both nature of the repeats, the makeup of the cohort of associated Cas proteins, and by molecular phylogeny within the more universal Cas proteins such as this one. This model is of type EXCEPTION and provides more specific information than the EQUIVALOG model TIGR00287. It describes Cas1 subgroup that includes Cas1 proteins of the related HMARI and TNEAP subtypes of CRISPR/Cas system.
pfam13505, OMP_b-brl, Outer membrane protein beta-barrel domain. This domain is found in a wide range of outer membrane proteins. This domain assumes a membrane bound beta-barrel fold.
pfam04016, DUF364, Putative heavy-metal chelation. This domain of unknown function has a PLP-dependent transferase-like fold. Its genomic context suggests that it may have a role in anaerobic vitamin B12 biosynthesis. This domain is often found at the C-terminus of proteins containing DUF4213, pfam13938. The structure of UnioProtKB:B8FUJ5, Structure 3l5o, suggests that the protein has an enolase N-terminal-like fold and this Rossmann-like C-terminal domain. Structural and bioinformatic analyses reveal partial similarities to Rossmann-like methyltransferases, with residues from the enolase-like fold combining to form a unique active site that is likely to be involved in the condensation or hydrolysis of molecules implicated in the synthesis of flavins, pterins or other siderophores. The protein may be playing a role in heavy-metal chelation.
