Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyBacterial luciferase-like 8043819 3000585 SCOP2B (2022-06-29)
BSCOP2 FamilyBacterial luciferase (alkanal monooxygenase) 8031439 4003312 SCOP2 (2022-06-29)
BSCOP2 SuperfamilyBacterial luciferase-like 8043817 3000585 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ABac_luciferasee1lucA1 A: a/b barrelsX: TIM beta/alpha-barrelH: TIM barrels (From Topology)T: TIM barrelsF: Bac_luciferaseECOD (1.6)
BBac_luciferasee1lucB1 A: a/b barrelsX: TIM beta/alpha-barrelH: TIM barrels (From Topology)T: TIM barrelsF: Bac_luciferaseECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.20.20.30 Alpha Beta Alpha-Beta Barrel TIM Barrel Luciferase-like domainCATH (4.3.0)
B3.20.20.30 Alpha Beta Alpha-Beta Barrel TIM Barrel Luciferase-like domainCATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00296Luciferase-like monooxygenase (Bac_luciferase)Luciferase-like monooxygenase- Domain
PF00296Luciferase-like monooxygenase (Bac_luciferase)Luciferase-like monooxygenase- Domain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
alkanal monooxygenase (FMN-linked)  M-CSA #132

In the bioluminescence reaction catalysed by bacterial luciferase, a flavin-dependent monooxygenase, reduced riboflavin 5' -phosphate (FMNH2) and a long-chain aliphatic aldehyde are oxidised by molecular oxygen to produce FMN, water, aliphatic carboxylic acid, and visible light with an overall quantum yield of about 0.12. It is intriguing that bacterial luciferase is unique among all known flavin-dependent monooxygenases in catalysing a light-emitting reaction. Vibrio harveyi luciferase is an alpha-beta heterodimer, the proposed earlier to be at a cleft in the alpha subunit.

Defined by 5 residues: HIS:A-44HIS:A-45CYS:A-106ASP:A-113SER:A-227
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