Protein Info for SMc01613 in Sinorhizobium meliloti 1021
Annotation: ribose-5-phosphate isomerase B
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: 61% identical to ERYI_BRUA2: D-erythrulose-4-phosphate isomerase (eryI) from Brucella abortus (strain 2308)
KEGG orthology group: K01808, ribose 5-phosphate isomerase B [EC: 5.3.1.6] (inferred from 100% identity to smk:Sinme_2205)MetaCyc: 61% identical to D-erythrulose-4-phosphate isomerase (Agrobacterium radiobacter K84)
RXN-17762 [EC: 5.3.1.34]
Predicted SEED Role
"Ribose 5-phosphate isomerase B (EC 5.3.1.6)" in subsystem Calvin-Benson cycle or D-ribose utilization or LMPTP YwlE cluster or Pentose phosphate pathway (EC 5.3.1.6)
MetaCyc Pathways
- photosynthetic 3-hydroxybutanoate biosynthesis (engineered) (22/26 steps found)
- Bifidobacterium shunt (14/15 steps found)
- Rubisco shunt (10/10 steps found)
- superpathway of glucose and xylose degradation (15/17 steps found)
- Calvin-Benson-Bassham cycle (12/13 steps found)
- formaldehyde assimilation III (dihydroxyacetone cycle) (11/12 steps found)
- pentose phosphate pathway (8/8 steps found)
- erythritol degradation I (6/6 steps found)
- 1-butanol autotrophic biosynthesis (engineered) (21/27 steps found)
- pentose phosphate pathway (non-oxidative branch) I (5/5 steps found)
- ethene biosynthesis V (engineered) (19/25 steps found)
- oxygenic photosynthesis (13/17 steps found)
- pentose phosphate pathway (non-oxidative branch) II (5/6 steps found)
- formaldehyde assimilation II (assimilatory RuMP Cycle) (7/9 steps found)
- D-apionate degradation II (RLP decarboxylase) (4/5 steps found)
- D-threitol degradation (2/3 steps found)
- D-apionate degradation I (xylose isomerase family decarboxylase) (3/5 steps found)
- L-threitol degradation (2/4 steps found)
- erythritol degradation II (1/3 steps found)
KEGG Metabolic Maps
- Biosynthesis of alkaloids derived from histidine and purine
- Biosynthesis of plant hormones
- Carbon fixation in photosynthetic organisms
- Pentose phosphate pathway
Isozymes
Compare fitness of predicted isozymes for: 5.3.1.6
Use Curated BLAST to search for 5.3.1.34 or 5.3.1.6
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 Q92NH9 at UniProt or InterPro
Protein Sequence (145 amino acids)
>SMc01613 ribose-5-phosphate isomerase B (Sinorhizobium meliloti 1021) MKIAIGADSAGKPLLDVIAAHLAKRSDLEVKDLSQTGYYADLSRDLAQTITAGENERGIL ICGTGIGVCISANKVPGIRAALTHDTYSAERAAKSNNAQIITMGARVIGPELAKSIVDTW LASEFDPNGPSAANVEAIDRLDQAK