Reviewed, UniProtKB/Swiss-Prot P18300 (LUXB_KRYAS)

Names and origin

Protein names

Recommended name:
    Alkanal monooxygenase beta chain
    EC=1.14.14.3
Alternative name(s):
    Bacterial luciferase beta chain

Gene names

Name:

luxB

Organism

Kryptophanaron alfredi symbiont

Taxonomic identifier

28177 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Vibrionales › Vibrionaceae › light emitting symbionts of fish

Protein attributes

Sequence length	18 AA.
Sequence status	Fragment.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Light-emitting reaction in luminous bacteria. The specific role of the beta subunit is unknown, but it is absolutely required for bioluminescence activity.
Catalytic activity	RCHO + reduced FMN + O2 = RCOOH + FMN + H2O + light.
Subunit structure	Heterodimer of an alpha and a beta chain.
Sequence similarities	Belongs to the bacterial luciferase oxidoreductase family.

Ontologies

Keywords
Biological process	Luminescence
Ligand	FMN Flavoprotein
Molecular function	Monooxygenase Oxidoreductase Photoprotein
Gene Ontology (GO)
Biological process	bioluminescence Inferred from electronic annotation. Source: UniProtKB-KW oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	alkanal monooxygenase (FMN-linked) activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – ›18	›18	Alkanal monooxygenase beta chain		PRO_0000220173
Experimental info
	Non-terminal residue	18	1

Sequences

	Sequence		Length	Mass (Da)
	P18300-1 [UniParc]. Last modified November 1, 1990. Version 1. Checksum: 8CB3B6955CCB2E7A	FASTA	18	2,153
	10 MKFGLFFQNF LSENQSSE

References

[1]

"Relationship of the luminous bacterial symbiont of the Caribbean flashlight fish, Kryptophanaron alfredi (family Anomalopidae) to other luminous bacteria based on bacterial luciferase (luxA) genes." Haygood M.G. Arch. Microbiol. 154:496-503(1990) [PubMed: 2256783] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	M36597 Genomic DNA. Translation: AAA91214.1.
3D structure databases
ModBase	Search...
Enzyme and pathway databases
BRENDA	1.14.14.3. 307252.
Family and domain databases
InterPro	IPR018235. Bacterial_luciferase_CS. [Graphical view]
PROSITE	PS00494. BACTERIAL_LUCIFERASE. Partial match. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

LUXB_KRYAS

Accession

Primary (citable) accession number: P18300

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1990
Last sequence update:	November 1, 1990
Last modified:	May 5, 2009
This is version 44 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)