Reviewed, UniProtKB/Swiss-Prot P32002 (SECB_BUCAP)

Names and origin

Protein names

Recommended name:
    Protein-export protein secB

Gene names

Name:	secB
Ordered Locus Names:	BUsg_050

Organism

Buchnera aphidicola subsp. Schizaphis graminum [Complete proteome] [HAMAP]

Taxonomic identifier

98794 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Buchnera

Protein attributes

Sequence length	154 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

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 structure	Homotetramer, a dimer of dimers. One homotetramer interacts with 1 secA dimer By similarity.
Subcellular location	Cytoplasm By similarity.
Sequence similarities	Belongs to the secB family.

Ontologies

Keywords
Biological process	Protein transport Translocation Transport
Cellular component	Cytoplasm
Molecular function	Chaperone
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	protein folding Inferred from electronic annotation. Source: HAMAP protein tetramerization Inferred from electronic annotation. Source: InterPro protein transport Inferred from electronic annotation. Source: HAMAP transmembrane transport Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	unfolded protein binding Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 154	154	Protein-export protein secB HAMAP MF_00821		PRO_0000055357

Sequences

	Sequence		Length	Mass (Da)
	P32002-1 [UniParc]. Last modified July 1, 1993. Version 1. Checksum: B65078561968A954	FASTA	154	18,037
	10 20 30 40 50 60 MSEEKLKKKS FEIQRIYIRD ASFEAPNTPN IFHKKWDPEI KFNLSTVSKK LKPNIFETNL 70 80 90 100 110 120 QVRVIVKSEE NLVFLCDVHQ VGIFFISCLD EQELKHCLGS YCPNILFPYA RTCISSLVSY 130 140 150 GSFPQLNLSP IDFDDIFCKN LKSKRNNFYQ KENI

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Sequence analysis of a DNA fragment from Buchnera aphidicola (an endosymbiont of aphids) containing genes homologous to dnaG, rpoD, cysE, and secB." Lai C.-Y., Baumann P. Gene 119:113-118(1992) [PubMed: 1398077] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"50 million years of genomic stasis in endosymbiotic bacteria." Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S., Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E. Science 296:2376-2379(2002) [PubMed: 12089438] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	M90644 Genomic DNA. Translation: AAA73231.1. AE013218 Genomic DNA. Translation: AAM67621.1.
PIR	JC1292.
RefSeq	NP_660410.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	1005866.
GenomeReviews	Gene locus BUsg_050 in contig AE013218_GR.
KEGG	bas:BUsg050.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG294212.
OMA	GFPPLMI.
Enzyme and pathway databases
BioCyc	BAPH198804:BUSG050-MON.
Family and domain databases
HAMAP	MF_00821. [Tree]
InterPro	IPR003708. SecB. [Graphical view]
Gene3D	G3DSA:3.10.420.10. SecB. 1 hit.
Pfam	PF02556. SecB. 1 hit. [Graphical view]
PRINTS	PR01594. SECBCHAPRONE.
ProtoNet	Search...

Entry information

Entry name

SECB_BUCAP

Accession

Primary (citable) accession number: P32002

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 1, 1993
Last sequence update:	July 1, 1993
Last modified:	December 15, 2009
This is version 58 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)