Protein Info for PGA1_c18720 in Phaeobacter inhibens DSM 17395
Annotation: glutamine synthetase GlnA
These analyses and tools can help you predict a protein's function, but be skeptical. For enzymes, over 10% of annotations from KEGG or SEED are probably incorrect. For other types of proteins, the error rates may be much higher. MetaCyc and Swiss-Prot have low error rates, but the best hits in these databases are often quite distant, so this protein's function may not be the same. TIGRFam has low error rates. Finally, many experimentally-characterized proteins are not in any of these databases. To find relevant papers, use PaperBLAST.
Protein Families and Features
Best Hits
Swiss-Prot: 81% identical to GLN1B_RHOSH: Glutamine synthetase (glnA) from Rhodobacter sphaeroides
KEGG orthology group: K01915, glutamine synthetase [EC: 6.3.1.2] (inferred from 93% identity to sit:TM1040_1022)MetaCyc: 61% identical to glutamine synthetase (Escherichia coli K-12 substr. MG1655)
Glutamate--ammonia ligase. [EC: 6.3.1.2]
Predicted SEED Role
"Glutamine synthetase type I (EC 6.3.1.2)" in subsystem Ammonia assimilation or Glutamine, Glutamate, Aspartate and Asparagine Biosynthesis or Glutamine synthetases or Peptidoglycan Biosynthesis (EC 6.3.1.2)
MetaCyc Pathways
- L-arginine biosynthesis II (acetyl cycle) (10/10 steps found)
- L-glutamate and L-glutamine biosynthesis (7/7 steps found)
- ammonia assimilation cycle III (3/3 steps found)
- superpathway of ammonia assimilation (plants) (3/3 steps found)
- ammonia assimilation cycle I (2/2 steps found)
- ammonia assimilation cycle II (2/2 steps found)
- L-glutamine biosynthesis I (1/1 steps found)
- L-aspartate degradation II (aerobic) (1/3 steps found)
- L-aspartate degradation III (anaerobic) (1/3 steps found)
KEGG Metabolic Maps
Isozymes
Compare fitness of predicted isozymes for: 6.3.1.2
Use Curated BLAST to search for 6.3.1.2
Sequence Analysis Tools
PaperBLAST (search for papers about homologs of this protein)
Search CDD (the Conserved Domains Database, which includes COG and superfam)
Predict protein localization: PSORTb (Gram-negative bacteria)
Predict transmembrane helices and signal peptides: Phobius
Check the current SEED with FIGfam search
Find homologs in fast.genomics or the ENIGMA genome browser
See I7EMR5 at UniProt or InterPro
Protein Sequence (468 amino acids)
>PGA1_c18720 glutamine synthetase GlnA (Phaeobacter inhibens DSM 17395) MSADAVLKMIKDEDIAYVDIRFTDVRGKLQHVTVDVDLVDEDFIEEGFMFDGSSIAGWKS IENSDMKLILDTSSAYIDPFYAEKTLCIHCSVVEPDTGEAYPRDPRGTAQKAEAYLKSSG IGDVAYMGPEAEFFLFDDVRFSNTINKVSFEVDATDASWNTDTEYEMGNMGHRPGIKGGY FPVNPIDEAQDLRSEMLSTMKRLGMKVDKHHHEVASCQHELGLIFDSLTKQADELQKYKY VIHNVAHAYGKSATFMPKPIYGDNGTGMHVNMSIWKDGKPLFAGDKYADLSNEALYFIGG ILKHAKTLNAFTNPSTNSYKRLIPGFEAPVLRAYSARNRSGCVRIPWTESPKAKRVEARF PDPAANPYLCFAALLMAGLDGIKNKIDPGEAMDKNLYDLPAEELADIPTVCGSLREALES LAGDHDFLLQGDVFTKDQIEGYIALKMEEVETYEHTPHPVEYGMYYSC