Protein Info for LU632_RS12970 in Erwinia tracheiphila SCR3

Name: sppA
Annotation: signal peptide peptidase SppA

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

1 50 100 150 200 250 300 350 400 450 500 550 618 transmembrane" amino acids 21 to 44 (24 residues), see Phobius details TIGR00705: signal peptide peptidase SppA, 67K type" amino acids 16 to 609 (594 residues), 785 bits, see alignment E=4.2e-240 PF01343: Peptidase_S49" amino acids 141 to 289 (149 residues), 136.4 bits, see alignment E=8.5e-44 amino acids 392 to 542 (151 residues), 167.2 bits, see alignment E=2.7e-53 TIGR00706: signal peptide peptidase SppA, 36K type" amino acids 327 to 541 (215 residues), 175.1 bits, see alignment E=1.5e-55

Best Hits

Swiss-Prot: 71% identical to SPPA_ECOLI: Protease 4 (sppA) from Escherichia coli (strain K12)

KEGG orthology group: K04773, protease IV [EC: 3.4.21.-] (inferred from 85% identity to ebi:EbC_24160)

MetaCyc: 71% identical to protease IV, a signal peptide peptidase (Escherichia coli K-12 substr. MG1655)
3.4.21.-

Predicted SEED Role

"Signal peptide peptidase SppA (EC 3.4.21.-)" (EC 3.4.21.-)

MetaCyc Pathways

Isozymes

Compare fitness of predicted isozymes for: 3.4.21.-

Use Curated BLAST to search for 3.4.21.-

Sequence Analysis Tools

PaperBLAST (search for papers about homologs of this protein)

Search CDD (the Conserved Domains Database, which includes COG and superfam)

Search structures

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

Find the best match in UniProt

Protein Sequence (618 amino acids)

>LU632_RS12970 signal peptide peptidase SppA (Erwinia tracheiphila SCR3)
MRILWRAIAGVFKWTWRLLNFVREFILNLFLIFLILICAGIWFQYTKANAPAEAQKGALV
VNLSGTVVDKPSVSNKLSRIGRQLLGTSSDRLKENSLFDVVDAIRQAKSDANITGMVMDL
RDFAGADQPSLQYIGKALREFRDSGKPVYATGDSYSQAQYYLASFANKIYLSPQGTVDLH
GFATNGLYYKTLLDKLKVTSHVFRVGTYKSAVEPYLRDDMSPAARDADSRWIGELWQNYL
NTLAANRQLTPEQIFPGAQGILDGLNKVGGDTAAYAKENKLVDELASRAVVNQQMSKIFG
WDKQTNDFKGTSIYDYQVKDNSSADGNIAVILANGAILDGEETPGNVGGDTTAMAIRQAR
LDPKIKAIVFRVNSPGGSVTASETIREELAAAKEAGKPVVVSMGGMAASGGYWISTPANY
IIASPTTLTGSIGIFGVINTIENTLDSIGVHTDGVSTSPLANVATTRALPPEAQQMMQLS
IANGYKNFIGLVAAARSKTPEQVDQIAQGHVWTGSDAKNNGLVDAMGDFDDAMAKAAALA
KLQNWQLSWYQDEPGFFDLLFNQMNISVQSALPGALKALLPAPVADVMTTMKNQPGLFDN
LNDPQNRYAICLTCSQVK