Protein Family Models

Date:

2024-08-14

This large family of DNA binding helix-turn helix proteins includes Cro Swiss:P03036 and CI Swiss:P03034. Within the protein Swiss:Q5F9C2, the full protein fold incorporates a helix-turn-helix motif, but the function of this member is unlikely to be that of a DNA-binding regulator, the function of most other members, so is not necessarily characteristic of the whole family [1]. [1]. 20196080. The crystal structure of NGO0477 from Neisseria gonorrhoeae reveals a novel protein fold incorporating a helix-turn-helix motif. Ren J, Sainsbury S, Nettleship JE, Saunders NJ, Owens RJ;. Proteins. 2010;78:1798-1802. (from Pfam)

Date:

2024-10-16

This family includes: Cholinephosphate cytidylyltransferase Swiss:P49585; glycerol-3-phosphate cytidylyltransferase Swiss:P27623. It also includes putative adenylyltransferases, and FAD synthases. [1]. 10208837. CTP:Phosphocholine Cytidylyltransferase: Insights into Regulatory Mechanisms and Novel Functions. Clement JM, Kent C;. Biochem Biophys Res Commun 1999;257:643-650. (from Pfam)

Date:

2024-10-16

The NadR protein of E. coli and closely related bacteria is both enzyme and regulatory protein. The first 60 or so amino acids, N-terminal to the region covered by this model, is a DNA-binding helix-turn-helix domain (PF01381) responsible for repressing the nadAB genes of NAD de novo biosynthesis. The NadR homologs in Mycobacterium tuberculosis, Haemophilus influenzae, and others appear to lack the repressor domain. NadR has recently been shown to act as an enzyme of the salvage pathway of NAD biosynthesis, nicotinamide-nucleotide adenylyltransferase; members of this family are presumed to share this activity. E. coli NadR has also been found to regulate the import of its substrate, nicotinamide ribonucleotide, but it is not known if the other members of this model share that activity.

Date:

2021-04-27

multifunctional transcriptional regulator/nicotinamide-nucleotide adenylyltransferase/ribosylnicotinamide kinase NadR has three activities: DNA binding, nicotinamide mononucleotide (NMN) adenylyltransferase and ribosylnicotinamide (RN) kinase

Date:

2019-07-30

Catalyzes the formation of NAD(+) from nicotinamide ribonucleotide; Catalyzes the formation of nicotinamide mononucleotide from nicotinamide riboside; also has a regulatory function

Gene:

nadR

Date:

2021-10-01

Protein families that contain at least one copy of this domain include citrate lyase ligase, pantoate-beta-alanine ligase, glycerol-3-phosphate cytidyltransferase, ADP-heptose synthase, phosphocholine cytidylyltransferase, lipopolysaccharide core biosynthesis protein KdtB, the bifunctional protein NadR, and a number whose function is unknown. Many of these proteins are known to use CTP or ATP and release pyrophosphate.

Date:

2024-05-30