TIGR01765, COG0675:_Transposase_and_inactivated_derivatives, transposase, putative, N-terminal domain. This model represents the N-terminal region of a family of putative transposases found in the largest copy number in Thermoanaerobacter tengcongensis. The three homologs in Bacillus anthracis are each split into two ORFs and this model represents the upstream ORF. [Mobile and extrachromosomal element functions, Transposon functions].
cd01949, GGDEF, Diguanylate-cyclase (DGC) or GGDEF domain. Diguanylate-cyclase (DGC) or GGDEF domain: Originally named after a conserved residue pattern, and initially described as a domain of unknown function 1 (DUF1). This domain is widely present in bacteria, linked to a wide range of non-homologous domains in a variety of cell signaling proteins. The domain shows homology to the adenylyl cyclase catalytic domain. This correlates with the functional information available on two GGDEF-containing proteins, namely diguanylate cyclase and phosphodiesterase A of Acetobacter xylinum, both of which regulate the turnover of cyclic diguanosine monophosphate. Together with the EAL domain, GGDEF might be involved in regulating cell surface adhesion in bacteria.
pfam07833, Cu_amine_oxidN1, Copper amine oxidase N-terminal domain. Copper amine oxidases catalyze the oxidative deamination of primary amines to the corresponding aldehydes, while reducing molecular oxygen to hydrogen peroxide. These enzymes are dimers of identical subunits, each comprising four domains. The N-terminal domain, which is absent in some amine oxidases, consists of a five-stranded antiparallel beta sheet twisted around an alpha helix. The D1 domains from the two subunits comprise the 'stalk' of the mushroom-shaped dimer, and interact with each other but do not pack tightly against each other.
cd05403, NT_KNTase_like, Nucleotidyltransferase (NT) domain of Staphylococcus aureus kanamycin nucleotidyltransferase, and similar proteins. S. aureus KNTase is a plasmid encoded enzyme which confers resistance to a wide range of aminoglycoside antibiotics which have a 4'- or 4''-hydroxyl group in the equatorial position, such as kanamycin A. This enzyme transfers a nucleoside monophosphate group from a nucleotide (ATP,GTP, or UTP) to the 4'-hydroxyl group of kanamycin A. This enzyme is a homodimer, having two NT active sites. The nucleotide and antibiotic binding sites of each active site include residues from each monomer. Included in this subgroup is Escherichia coli AadA5 which confers resistance to the antibiotic spectinomycin and is a putative aminoglycoside-3'-adenylyltransferase. It is part of the aadA5 cassette of a class 1 integron. This subgroup also includes Haemophilus influenzae HI0073 which forms a 2:2 heterotetramer with an unrelated protein HI0074. Structurally HI0074 is related to the substrate-binding domain of S. aureus KNTase. The genes encoding HI0073 and HI0074 form an operon. Little is known about the substrate specificity or function of two-component NTs. The characterized members of this subgroup may not be representive of the function of this subgroup. This subgroup belongs to the Pol beta-like NT superfamily. In the majority of enzymes in this superfamily, two carboxylates, Dx[D/E], together with a third more distal carboxylate, co-ordinate two divalent metal cations involved in a two-metal ion mechanism of nucleotide addition. These carboxylate residues are conserved in this subgroup.
pfam00583, Acetyltransf_1, Acetyltransferase (GNAT) family. This family contains proteins with N-acetyltransferase functions such as Elp3-related proteins.
pfam02632, BioY, BioY family. A number of bacterial genes are involved in bioconversion of pimelate into dethiobiotin. BioY is a component of the BioMNY transport system involved in biotin uptake in prokaryotes.
TIGR03336, IOR_alpha, indolepyruvate ferredoxin oxidoreductase, alpha subunit. Indolepyruvate ferredoxin oxidoreductase (IOR) is an alpha 2/beta 2 tetramer related to ketoacid oxidoreductases for pyruvate (1.2.7.1, POR), 2-ketoglutarate (1.2.7.3, KOR), and 2-oxoisovalerate (1.2.7.7, VOR). These multi-subunit enzymes typically are found in anaerobes and are inactiviated by oxygen. IOR in Pyrococcus acts in fermentation of all three aromatic amino acids, following removal of the amino group by transamination. In Methanococcus maripaludis, by contrast, IOR acts in the opposite direction, in pathways of amino acid biosynthesis from phenylacetate, indoleacetate, and p-hydroxyphenylacetate. In M. maripaludis and many other species, iorA and iorB are found next to an apparent phenylacetate-CoA ligase.
pfam13715, CarbopepD_reg_2, CarboxypepD_reg-like domain. This domain family is found in bacteria, archaea and eukaryotes, and is approximately 90 amino acids in length. The family is found in association with pfam07715 and pfam00593.
pfam16916, ZT_dimer, dimerization domain of Zinc Transporter. ZT_dimer is the dimerization region of the whole molecule of zinc transporters since the full-length members form a homodimer during activity. The domain lies within the cytoplasm and exhibits an overall structural similarity with the copper metallochaperone Hah1 UniProtKB:O00244, exhibiting an open alpha-beta domain with two alpha helices (H1 and H2) aligned on one side and a three-stranded mixed beta-sheet (S1 to S3) on the other side. The N-terminal part of the members is the Cation_efflux family, pfam01545.
TIGR03346, chaperone_ClpB, ATP-dependent chaperone ClpB. Members of this protein family are the bacterial ATP-dependent chaperone ClpB. This protein belongs to the AAA family, ATPases associated with various cellular activities (pfam00004). This molecular chaperone does not act as a protease, but rather serves to disaggregate misfolded and aggregated proteins. [Protein fate, Protein folding and stabilization].
TIGR01895, conserved_hypothetical_protein, CRISPR-associated protein Cas5, subtype I-B/TNEAP. CRISPR is a term for Clustered Regularly Interspaced Short Palidromic Repeats. A number of protein families appear only in association with these repeats and are designated Cas (CRISPR associated) proteins. This family is represented by TM1800 from Thermotoga maritima. It is related to TIGR01868 (CRISPR-associated protein, CT1976 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.
cd09665, 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 CXXC_CXXC family.
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.
cd09652, Cas6-I-III, CRISPR/Cas system-associated RAMP superfamily protein Cas6. 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; Cas6 is an endoribonuclease that generates crRNAs, predicted subunit of Cascade complex; RAMP superfamily protein; Possesses double RRM/ferredoxin fold.
cd09687, Cas7_I-C, 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 Cst2/DevR family.
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.
cd00851, MTH1175, This uncharacterized conserved protein belongs to a family of iron-molybdenum cluster-binding proteins that includes NifX, NifB, and NifY, all of which are involved in the synthesis of an iron-molybdenum cofactor (FeMo-co) that binds the active site of the dinitrogenase enzyme. This domain is a predicted small-molecule-binding domain (SMBD) with an alpha/beta fold that is present either as a stand-alone domain (e.g. NifX and NifY) or fused to another conserved domain (e.g. NifB) however, its function is still undetermined.The SCOP database suggests that this domain is most similar to structures within the ribonuclease H superfamily. This conserved domain is represented in two of the three major divisions of life (bacteria and archaea).
TIGR01587, CRISPR-associated_endonuclease/helicase_Cas3, CRISPR-associated helicase Cas3. This model represents the highly conserved core region of an alignment of Cas3, a protein found in association with CRISPR repeat elements in a broad range of bacteria and archaea. Cas3 appears to be a helicase, with regions found by pfam00270 (DEAD/DEAH box helicase) and pfam00271 (Helicase conserved C-terminal domain). Some but not all members have an N-terminal HD domain region (pfam01966) that is not included within this model.
TIGR01877, CRISPR-associated_endoribonuclease_Cas6_1, CRISPR-associated endoribonuclease Cas6. CRISPR is a term for Clustered, Regularly Interspaced Short Palidromic Repeats. A number of protein families appear only in association with these repeats and are designated Cas (CRISPR-Associated) proteins. This broadly distributed, highly divergent Cas family is now characterized as an endoribonuclease that generates guide RNAs for host defense against phage and other invaders. The family contains a C-terminal motif GXGXXXXXGXG, where the each X between two Gly is hydrophobic and the spacer XXXXX contains (usually) one Arg or Lys. The seed alignment for the current version of this model has gappy columns removed. Members of this protein family are found associated with several different CRISPR/cas system subtypes, and consequently we designate this family Cas6.
The bacterium proteins that are colored denote the protein is present at specific phage-related keywords (such as 'capsid', 'head', 'integrase', 'plate', 'tail', 'fiber', 'coat', 'transposase', 'portal', 'terminase', 'protease' or 'lysin' and 'tRNA')
