SPKB

Signal Peptide Knowledge Base

General Information


SPKB ID  SPKB02305

Signal sequence   MFKTTLCALLITASCSTFA

Length  19

Organism  Escherichia coli (strain K12)

UniProt ID  P00811,

Motif  1..19



Activity Information


Pathway  Sec

Natural/Artificial  Natural

Subcellular location  Periplasmic space

Secretion efficiency  NA

Type  Sec/SPI



Structure Information


PDB ID  9C6P,

Predicted Structure ID  SPKB02305.cif

Structure  SPKB02305.cif
Very high (pLDDT > 90)
Confident (90 > pLDDT > 70)
Low (70 > pLDDT > 50)
Very low (pLDDT < 50)
Loading PAE…
Expected Position Error (Ångströms)


Physicochemical Information


Molecular weight  2022.46354

Aliphatic index  97.89473684

Isoelectric point  8.229691165

Charge (pH=7)   0.873739834

Topological polar surface area  734.52

Aromaticity  0.105263158

Average rotatable bonds  3.368421053

Number of hydrogen bond donors  29

Number of hydrogen bond acceptors  30

X logP energy  -6.8963

Hydropathy 



Literature Information


Title  ampC cephalosporinase of Escherichia coli K-12 has a different evolutionary origin from that of beta-lactamases of the penicillinase type.

DOI  10.1073/pnas.78.8.4897,

Publication Year  1981

PubMed ID  6795623,

Patent ID  NA,



Faculty of Applied Sciences, Macao Polytechnic University, Macao, China.