C-terminal (adenylylation) domain of E.coli Glutamine Synthetase Adenylyltransferase


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
BEB1e3k7dB3 A: beta barrelsX: DEATH domainH: Ten stranded beta/alpha barrelT: Ten stranded beta/alpha barrelF: EB1ECOD (v294.2)
AGlnD_UR_UTasee3k7dA3 A: beta barrelsX: POZ domainH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: GlnD_UR_UTaseECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF08335GlnD PII-uridylyltransferase (GlnD_UR_UTase)GlnD PII-uridylyltransferaseThis is a family of bifunctional uridylyl-removing enzymes/uridylyltransferases (UR/UTases, GlnD) that are responsible for the modification (EC:2.7.7.59) of the regulatory protein P-II, or GlnB (e.g. Swiss:P05826, Pfam:PF00543). In response to nitrog ...This is a family of bifunctional uridylyl-removing enzymes/uridylyltransferases (UR/UTases, GlnD) that are responsible for the modification (EC:2.7.7.59) of the regulatory protein P-II, or GlnB (e.g. Swiss:P05826, Pfam:PF00543). In response to nitrogen limitation, these transferases (e.g. Swiss:P27249) catalyse the uridylylation of the PII protein, which in turn stimulates deadenylylation of glutamine synthetase (GlnA). Deadenylylated glutamine synthetase is the more active form of the enzyme [1]. Moreover, uridylylated PII can act together with NtrB and NtrC to increase transcription of genes in the sigma54 regulon, which include glnA and other nitrogen-level controlled genes [2]. It has also been suggested that the product of the glnD gene is involved in other physiological functions such as control of iron metabolism in certain species [2]. The region described in this family is found in many of its members to be C-terminal to a nucleotidyltransferase domain (Pfam:PF01909), and N-terminal to an HD domain (Pfam:PF01966) and two ACT domains (Pfam:PF01842) [3].
Domain
A, B
PF03710Glutamate-ammonia ligase adenylyltransferase (GlnE)Glutamate-ammonia ligase adenylyltransferaseConserved repeated domain found in GlnE proteins. These proteins adenylate and deadenylate glutamine synthases: ATP + {L-Glutamate:ammonia ligase (ADP-forming)} = Diphosphate + Adenylyl-{L-Glutamate:Ammonia ligase (ADP-forming)}. The family is relat ...Conserved repeated domain found in GlnE proteins. These proteins adenylate and deadenylate glutamine synthases: ATP + {L-Glutamate:ammonia ligase (ADP-forming)} = Diphosphate + Adenylyl-{L-Glutamate:Ammonia ligase (ADP-forming)}. The family is related to the Pfam:PF01909 domain.
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
Glutamate-ammonia-ligase adenylyltransferase