A0A8J7FAS6 · A0A8J7FAS6_9GAMM
- ProteintRNA-dihydrouridine(20/20a) synthase
- GenedusA
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids311 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Catalyzes the synthesis of 5,6-dihydrouridine (D), a modified base found in the D-loop of most tRNAs, via the reduction of the C5-C6 double bond in target uridines. Specifically modifies U20 and U20a in tRNAs.
Catalytic activity
- 5,6-dihydrouridine20 in tRNA + NAD+ = uridine20 in tRNA + NADH + H+
- 5,6-dihydrouridine(20a) in tRNA + NAD+ = uridine(20a) in tRNA + NADH + H+
- 5,6-dihydrouridine(20a) in tRNA + NADP+ = uridine(20a) in tRNA + NADPH + H+
Cofactor
Features
Showing features for binding site, site, active site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 53 | FMN (UniProtKB | ChEBI) | ||||
Sequence: Q | ||||||
Site | 80 | Interacts with tRNA | ||||
Sequence: N | ||||||
Active site | 83 | Proton donor | ||||
Sequence: C | ||||||
Binding site | 122 | FMN (UniProtKB | ChEBI) | ||||
Sequence: K | ||||||
Binding site | 154 | FMN (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Site | 166 | Interacts with tRNA; defines subfamily-specific binding signature | ||||
Sequence: K | ||||||
Site | 169 | Interacts with tRNA | ||||
Sequence: R | ||||||
Binding site | 194-196 | FMN (UniProtKB | ChEBI) | ||||
Sequence: NGG | ||||||
Binding site | 216-217 | FMN (UniProtKB | ChEBI) | ||||
Sequence: GR | ||||||
Site | 282 | Interacts with tRNA; defines subfamily-specific binding signature | ||||
Sequence: R | ||||||
Site | 285 | Interacts with tRNA; defines subfamily-specific binding signature | ||||
Sequence: R |
GO annotations
Aspect | Term | |
---|---|---|
Molecular Function | flavin adenine dinucleotide binding | |
Molecular Function | FMN binding | |
Molecular Function | tRNA binding | |
Molecular Function | tRNA dihydrouridine synthase activity |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nametRNA-dihydrouridine(20/20a) synthase
- EC number
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageBacteria > Pseudomonadota > Gammaproteobacteria > Oceanospirillales > Oceanospirillaceae > Pontibacterium
Accessions
- Primary accessionA0A8J7FAS6
Proteomes
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 1-305 | DUS-like FMN-binding | ||||
Sequence: MMDWTDRHCRYFHRLISHHAVLYTEMVTTGALIHADEARFLQFDPKEQPVALQLGGSNPEDLTQCTKMAEDWGYNEVNLNVGCPSDRVQNNMIGACLMAHPQLVAECLHKMQSVVDIPVTVKHRLGIDDMDSYEELHNFVDIVKQSGCRTFIVHARKAILQGLSPKENRDIPPLKYEWVYQLKREFPELEIIINGGIKTLEECEQHLQQVDGVMVGREAYQNPYMMAEVDNRLYDADSTPQQRKAVIEAMLPYIDAQLNDGRYLNHVVRHLLGLFHAQRGGRQFRRYLSENAHKPGASINTLKEA |
Sequence similarities
Belongs to the Dus family. DusA subfamily.
Belongs to the dus family.
Family and domain databases
Sequence
- Sequence statusComplete
- Length311
- Mass (Da)35,675
- Last updated2022-05-25 v1
- ChecksumBBE4403587129C95
Keywords
- Technical term