Accession	MF_00821
Dates	7-DEC-2005 (Created) 7-JUN-2008 (Last updated, Version 8)

Data class

Protein

Predictors

HAMAP; MF_00821; [distribution of match scores in UniProtKB];[seed alignment for MF_00821]

Identifier

SECB

Protein name

RecName: Full=Protein-export protein secB;

Gene name

secB

FUNCTION: One of the proteins required for the normal export of preproteins out of the cell cytoplasm. It is a molecular chaperone that binds to a subset of precursor proteins, maintaining them in a translocation-competent state. It also specifically binds to its receptor secA (By similarity).

SUBUNIT: Homotetramer, a dimer of dimers. One homotetramer interacts with 1 secA dimer (By similarity).

SUBCELLULAR LOCATION: Cytoplasm (By similarity).

SIMILARITY: Belongs to the secB family.

Pfam	PF02556; SecB; 1;
PRINTS	PR01594; SECBCHAPRONE; 1;
TIGRFAMs	TIGR00809; secB; 1;

Cytoplasm, Chaperone, Protein transport, Translocation, Transport.

GO:0006457; Biological process: protein folding.
GO:0015031; Biological process: protein transport.
GO:0005737; Cellular component: cytoplasm.

Size range:	140-188 amino acids
Related UniRules:	None
Template:	P0AG86 (SECB_ECOLI); P44853 (SECB_HAEIN): [Recover all]
Scope:	Bacteria; Alphaproteobacteria Bacteria; Betaproteobacteria Bacteria; Gammaproteobacteria Bacteria; Magnetococcus
Fusion:	Nter: None; Cter: None
Duplicate:	in FRAT1, FRATF, FRATH, FRATN, FRATO, FRATT, FRATW, GLUOX, POLNA
Plasmid encoded:	None
Comments:	Missing in some highly reduced Gammaproteobacteria, there is also a copy in the Deltaproteobacteria DESPS.