Protein Domain : IPR012349

Type:  Domain Name:  FMN-binding split barrel
Description:  The FMN-binding domain has a split beta-barrel structure with a Greek-key topology that is related in structure to the ferredoxin reductase-like FAD-binding domain. The FMN-binding split barrel domain is found in pyridoxine 5'-phoshate oxidase (PNP oxidase), FMN-binding protein, ferric reductase, and in phenol 2-hydroxylase component B (PheA2).PNP oxidase () is an FMN flavoprotein that catalyses the oxidation of pyridoxamine-5-P (PMP) and pyridoxine-5-P (PNP) to pyridoxal-5-P (PLP). This reaction serves as the terminal step in the de novo biosynthesis of PLP in Escherichia coli, and as a part of the salvage pathway of this coenzyme in both E. coli and mammalian cells [, ]. The binding sites for FMN and for substrate have been highly conserved throughout evolution. The FMN-binding protein (FMN-bp) is one of the smallest proteins known to bind FMN. FMN-bp appears to participate in the electron-transfer pathway, and may have a structural relationship to the C-terminal domain of chymotrypsin [, ].Microbial ferric reductases are essential for generating more soluble ferrous iron to use in cellular proteins (assimilatory ferric reductases), and as terminal reductases of iron respiratory pathway of certain bacteria (dissimilatory iron reductases). Most assimilatory iron reductases are flavin enzymes []. Short Name:  Split_barrel_FMN-bd

2 Child Features

DB identifier Type Name
IPR002563 Domain Flavin reductase like domain
IPR019920 Domain F420-binding domain, putative

3 Contains

DB identifier Type Name
IPR011576 Domain Pyridoxamine 5'-phosphate oxidase-like, FMN-binding domain
IPR019576 Domain Pyridoxine 5'-phosphate oxidase, dimerisation, C-terminal
IPR019740 Conserved_site Pyridoxamine 5'-phosphate oxidase, conserved site

2 Cross Referencess

Identifier
G3DSA:2.30.110.10
SSF50475

3 Found Ins

DB identifier Type Name
IPR000659 Family Pyridoxamine 5'-phosphate oxidase
IPR021198 Family Pyridoxamine 5'-phosphate oxidase, plant
IPR014419 Family Heme utilization protein with pyridoxamine 5'-phosphate domain

3 GO Annotations

GO Term Gene Name
GO:0010181 IPR012349
GO:0016491 IPR012349
GO:0055114 IPR012349

3 Ontology Annotations

GO Term Gene Name
GO:0010181 IPR012349
GO:0016491 IPR012349
GO:0055114 IPR012349

0 Parent Features

3256 Proteins

DB identifier UniProt Accession Secondary Identifier Organism Name Length
404656 D8QW03 PAC:15411785 Selaginella moellendorffii 175  
438248 D8QVB0 PAC:15419623 Selaginella moellendorffii 659  
99319 D8RQ31 PAC:15415767 Selaginella moellendorffii 152  
414135 D8RRR6 PAC:15415105 Selaginella moellendorffii 428  
432256 D8TFG1 PAC:15402086 Selaginella moellendorffii 130  
442734 D8RVM2 PAC:15413141 Selaginella moellendorffii 125  
80440 D8QYG1 PAC:15405287 Selaginella moellendorffii 243  
416274 D8RYS1 PAC:15421660 Selaginella moellendorffii 1418  
81184 D8R082 PAC:15406031 Selaginella moellendorffii 447  
82341 D8QZ42 PAC:15410486 Selaginella moellendorffii 202  
143660 D8R4M7 PAC:15417109 Selaginella moellendorffii 701  
163927 D8QQU1 PAC:15411424 Selaginella moellendorffii 256  
27860 D8QNN9 PAC:15407958 Selaginella moellendorffii 121  
448328 D8T6I6 PAC:15405136 Selaginella moellendorffii 615  
270695 D8RAV7 PAC:15421852 Selaginella moellendorffii 192  
77203 D8QSU3 PAC:15417024 Selaginella moellendorffii 264  
evm.TU.contig_32025.1 PAC:16430054 Carica papaya 285  
evm.TU.contig_36201.2 PAC:16430793 Carica papaya 75  
evm.TU.contig_38087.1 PAC:16431124 Carica papaya 145  
evm.model.supercontig_1.397 PAC:16404340 Carica papaya 321  
evm.model.supercontig_107.123 PAC:16405306 Carica papaya 519  
evm.model.supercontig_134.3 PAC:16408230 Carica papaya 77  
evm.model.supercontig_14.80 PAC:16408831 Carica papaya 211  
evm.model.supercontig_36.204 PAC:16418398 Carica papaya 461  
evm.model.supercontig_461.2 PAC:16420572 Carica papaya 385  
evm.model.supercontig_48.166 PAC:16420802 Carica papaya 594  
evm.model.supercontig_51.125 PAC:16421790 Carica papaya 325  
evm.model.supercontig_96.56 PAC:16428998 Carica papaya 198  
evm.model.supercontig_97.53 PAC:16429090 Carica papaya 69  
29693.m002043 B9S147 PAC:16806013 Ricinus communis 365  

5 Publications

First Author Title Year Journal Volume Pages PubMed ID
            12829278
            12824491
            12686112
            10713530
            9406543