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Search results 1801 to 1900 out of 202262 for *

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Category: OntologyTerm
Type Details Score
Ontology Term  
Ontology Term
Description: This is a family of phosphatidylserine decarboxylases, EC:4.1.1.65. These enzymes catalyse the reaction: Phosphatidyl-L-serine <=> phosphatidylethanolamine + CO2. Phosphatidylserine decarboxylase plays a central role in the biosynthesis of aminophospholipids by converting phosphatidylserine to phosphatidylethanolamine [2].
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Description: This domain is found mainly hydrophobic tRNA synthetases. The domain binds to the anticodon of the tRNA ligase.
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Ontology Term
Description: Sybindin is a physiological syndecan-2 ligand on dendritic spines, the small protrusions on the surface of dendrites that receive the vast majority of excitatory synapses [1].
Ontology Term
Description: This domain is related to the TUDOR domain Pfam:PF00567 [1]. The function of the agenet domain is unknown. This family now matches both the two Agenet domains in the FMR proteins [1].
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Description: Sec16 is a multi-domain vesicle coat protein. The C-terminal region is the part that binds to Sec23, a COPII vesicle coat protein. This association is part of the transport vesicle coat structure [1].
Ontology Term
Description: Sec16 is a multi-domain vesicle coat protein. This central region is the functional part of the molecules and thus is vital for the family's role in mediating the movement of protein-cargo between the organelles of the secretory pathway [1].
Ontology Term  
Ontology Term
Description: This is the C-terminal domain found in DnaJ-like proteins, including DnaJ homolog subfamily C member 11 (DNAJC11) from mammals and Chaperone protein dnaJ 13 from Arabidopsis. DNAJC11 is a mitochondrial outer membrane protein involved in mitochondrial biogenesis and in the response to microenvironment changes and requirements. The J-domain is mediated its mitochondrial localization, while this domain is critical for protein-protein interactions [1].
Ontology Term  
Ontology Term
Description: Light chain 3 is proposed to function primarily as a subunit of microtubule associated proteins 1A and 1B and that its expression may regulate microtubule binding activity [1]. Autophagy is generally known as a process involved in the degradation of bulk cytoplasmic components that are non-specifically sequestered into an autophagosome, where they are sequestered into double-membrane vesicles and delivered to the degradative organelle, the lysosome/vacuole, for breakdown and eventual recycling of the resulting macromolecules. The yeast proteins are involved in the autophagosome, and Atg8 binds Atg19, via its N-terminus and the C-terminus of Atg19.
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Ontology Term
Description: This Pleckstrin homology domain is found in some fungal species.
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Ontology Term
Description: This family includes a range of diverse phosphoribosyl transferase enzymes. This family includes: Adenine phosphoribosyl-transferase EC:2.4.2.7, Swiss:P07672. Hypoxanthine-guanine-xanthine phosphoribosyl-transferase Swiss:P51900. Hypoxanthine phosphoribosyl-transferase EC:2.4.2.8 Swiss:P36766. Ribose-phosphate pyrophosphokinase i EC:2.7.6.1 Swiss:P09329. Amidophosphoribosyltransferase EC:2.4.2.14 Swiss:P00496. Orotate phosphoribosyl-transferase EC:2.4.2.10 Swiss:P11172. Uracil phosphoribosyl-transferase EC:2.4.2.9 Swiss:P25532. Xanthine-guanine phosphoribosyl-transferase EC:2.4.2.22 Swiss:P00501. In Arabidopsis, At the very N-terminus of this domain is the P-Loop NTPase domain [1].
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Ontology Term
Description: This family includes FMO proteins, cyclohexanone mono-oxygenase and a number of different mono-oxygenases.
Ontology Term
Description: Plant AT-rich sequence and zinc-binding proteins (PLATZ) are zinc dependant DNA binding proteins. They bind to AT rich sequences and functions in transcriptional repression [1]. Included in this family is the protein RGF1 INDUCIBLE TRANSCRIPTION FACTOR 1 (RITF1), a transcription factor that plays a central role in mediating RGF1 hormone peptide signalling, leading to the production of reactive oxygen species (ROS) in roots to modulate meristem size and root growth, probably via oxidative post-translational modification of the transcription factor PLETHORA [2].
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Ontology Term
Description: This domain corresponds to the N-terminal domain of glycosyl hydrolase family 32 which forms a five bladed beta propeller structure [1].
Ontology Term
Description: This domain corresponds to the C terminal domain of glycosyl hydrolase family 32. It forms a beta sandwich module [1].
Ontology Term
Description: This entry represents the N-terminal domain of beta-fructofuranosidase, which is involved in the hydrolysis of terminal non-reducing beta-D-fructofuranoside residues in beta-D-fructofuranosides [1].
Ontology Term
Description: These repeats are found in many cyanobacterial proteins. The repeats were first identified in hglK [1]. The function of these repeats is unknown. The structure of this repeat has been predicted to be a beta-helix [2]. The repeat can be approximately described as A(D/N)LXX, where X can be any amino acid.
Ontology Term  
Ontology Term
Description: This is a family of no apical meristem (NAM) proteins these are plant development proteins. Mutations in NAM result in the failure to develop a shoot apical meristem in petunia embryos [2]. NAM is indicated as having a role in determining positions of meristems and primordial [2]. One member of this family NAP (NAC-like, activated by AP3/PI) is encoded by the target genes of the AP3/PI transcriptional activators and functions in the transition between growth by cell division and cell expansion in stamens and petals [1].
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Description: NULL
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Ontology Term
Description: This is a family of glycine cleavage T-proteins, part of the glycine cleavage multienzyme complex (GCV) found in bacteria and the mitochondria of eukaryotes. GCV catalyses the catabolism of glycine in eukaryotes. The T-protein is an aminomethyl transferase.
Ontology Term
Description: This is a family of glycine cleavage T-proteins, part of the glycine cleavage multienzyme complex (GCV) found in bacteria and the mitochondria of eukaryotes. GCV catalyses the catabolism of glycine in eukaryotes. The T-protein is an aminomethyl transferase.
Ontology Term
Description: This family consists of several hypothetical Arabidopsis thaliana proteins of around 225 residues in length. The function of this family is unknown.
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Description: NULL
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Description: This family consists of Na+/bile acid co-transporters. These transmembrane proteins function in the liver in the uptake of bile acids from portal blood plasma a process mediated by the co-transport of Na+ [2]. Also in the family is ARC3 from S. cerevisiae Swiss:Q06598 this is a putative transmembrane protein involved in resistance to arsenic compounds [1].
Ontology Term
Description: This domain is found in eukaryotes. This domain is typically between 127 to 182 amino acids in length. This domain is found associated with Pfam:PF06886. This domain is found in the protein TPX2 (a.k.a p100) which is involved in cell cycling. It is only expressed between the start of the S phase and completion of cytokinesis. The microtubule-associated protein TPX2 has been reported to be crucial for mitotic spindle formation. This domain is close to the C terminal of TPX2. The protein importin alpha regulates the activity of TPX2 by binding to the nuclear localisation signal in this domain.
Ontology Term
Description: The PA (Protease associated) domain is found as an insert domain in diverse proteases. The PA domain is also found in a plant vacuolar sorting receptor Swiss:O22925 and members of the RZF family Swiss:O43567. It has been suggested that this domain forms a lid-like structure that covers the active site in active proteases, and is involved in protein recognition in vacuolar sorting receptors [1].
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Description: This family of proteins have been implicated in chlorophyll degradation [1,2]. Intriguingly members of this family are also found in non-photosynthetic bacteria.
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Description: This entry represents a group of deubiquitinating (DUB) enzymes known as the MINDY family (MIU-containing novel DUB). Ubiquitin (Ub) is released one molecule at a time from the distal end of proteins with Lys48-linked polyubiquitin chains. Long polyubiquitin chains are preferred. The catalytic Cys and His residues have been identified by site-directed mutagenesis, as has the Gln that participates in formation of the oxyanion hole during catalysis. Despite the structural similarity to papain-like cysteine peptidases, a residue corresponding to the Asn that orientates the imidazolium ring of the catalytic His has not been identified. Members of the MINDY family of DUBs contain an MIU (motif interacting with Ub) motif, which is a helical motif that binds mono-Ub [1].
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Description: NULL
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Description: NULL
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Description: This family of proteins has no known function.
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Description: This entry is of proteins of approximately 300 residues conserved from plants to humans. It contains two conserved motifs, HxSL and FHVSL. The function is unknown.
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Ontology Term
Description: The anaphase-promoting complex is composed of eight protein subunits, including BimE (APC1), CDC27 (APC3), CDC16 (APC6), and CDC23 (APC8).
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Description: NULL
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Description: General transcription factor TFIIE consists of two subunits, TFIIE alpha Pfam:PF02002 and TFIIE beta. TFIIE beta has been found to bind to the region where the promoter starts to open to be single-stranded upon transcription initiation by RNA polymerase II. The structure of the DNA binding core region has been solved [1] and has a winged helix fold.
Ontology Term
Description: This version of the C2 domain was initally identified in the vertebrate estrogen early-induced gene 1 (EEIG1) [1], and its Drosophila ortholog required for uptake of dsRNA via the endocytotic machinery to induce RNAi silencing [2]. It is also in C.elegans ortholog Sym-3 (SYnthetic lethal with Mec-3) and the mammalian protein EHBP1 (EH domain Binding Protein-1) that regulates endocytotic recycling and two plant proteins, RPG that regulates Rhizobium-directed polar growth and PMI1 (Plastid Movement Impaired 1) that is essential for intracellular movement of chloroplasts in response to blue light [2].
Ontology Term  
Ontology Term
Description: The structure of this family has been solved. It comprises a 12-stranded beta barrel with a central C-terminal alpha helix. This helix is thought to be a transmembrane helix. It is structurally similar to the C-terminal domain of the Tubby protein [1]. In plants it plays a role in defense against pathogens [2].
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Ontology Term
Description: This is a family of eukaryotic nucleolar proteins that are involved in pre-rRNA processing [1].
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Ontology Term
Description: This family of glycosyl transferases are specifically (mannosyl) glucuronoxylomannan/galactoxylomannan -beta 1,2-xylosyltransferases, EC:2.4.2.-.
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Description: Severs actin filaments and binds to actin monomers.
Ontology Term
Description: The central intermediate formed during mitotic and meiotic recombination is a four stranded DNA structure, also known as the Holliday junction (HJ), and its efficient resolution is essential for proper segregation of chromosomes. Resolution of HJs is mediated by a diverse group of DNA structure specific endonucleases known as Holliday junction resolvases (HJR) [1]. This entry is specific for RuvX also known as YqgF a family of nucleases which resolves the Holliday junction intermediates in genetic recombination[2-3]. Studies carried out in M. tuberculosis, have shown that YqgF/RuvX is a genuine HJR analogous to RuvC from E. coli. Furthermore, a single cysteine present in M. tuberculosis RuvX was found to be required for disulfide-bond mediated intermolecular dimerization and HJ resolution activity, suggesting that M. tuberculosis RuvX has adapted its YqgF protein to function like a typical RuvC family HJR [1].
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Description: NULL
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Description: This domain is found at the C-terminus of phosphoribosyltransferases and phosphoribosyltransferase-like proteins. It contains putative transmembrane regions. It often appears together with calcium-ion dependent C2 domains (Pfam:PF00168).
Ontology Term
Description: Sequences in this family bear similarity to the central region of PLU-1 (Swiss:Q9Y3Q5). This is a nuclear protein that may have a role in DNA-binding and transcription, and is closely associated with the malignant phenotype of breast cancer [1]. This region is found in various other Jumonji/ARID domain-containing proteins (see Pfam:PF02373, Pfam:PF01388).
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Description: The JmjC domain belongs to the Cupin superfamily [3]. JmjC-domain proteins may be protein hydroxylases that catalyse a novel histone modification [4]. This is confirmed to be a hydroxylase: the human JmjC protein named Tyw5p unexpectedly acts in the biosynthesis of a hypermodified nucleoside, hydroxy-wybutosine, in tRNA-Phe by catalysing hydroxylation [5].
Ontology Term
Description: NULL
Ontology Term
Description: Predicted zinc finger with eight potential zinc ligand binding residues. This domain is found in Jumonji [1]. This domain may have a DNA binding function.
Ontology Term
Description: Also known as gamma-glutamylcysteine synthetase and gamma-ECS (EC:6.3.2.2). This enzyme catalyses the first and rate limiting step in de novo glutathione biosynthesis. Members of this family are found in archaea, bacteria and plants. May and Leaver [1] discuss the possible evolutionary origins of glutamate-cysteine ligase enzymes in different organisms and suggest that it evolved independently in different eukaryotes, from an ancestral bacterial enzyme. They also state that Arabidopsis thaliana gamma-glutamylcysteine synthetase is structurally unrelated to mammalian, yeast and Escherichia coli homologues. In plants, there are separate cytosolic and chloroplast forms of the enzyme.
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