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Q801S2 (DHSAB_XENLA) Reviewed, UniProtKB/Swiss-Prot

Last modified May 29, 2013. Version 81. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Succinate dehydrogenase [ubiquinone] flavoprotein subunit B, mitochondrial
EC=1.3.5.1
Alternative name(s):
Flavoprotein subunit of complex II B
Short name=Fp
Gene names
Name:sdha-b
OrganismXenopus laevis (African clawed frog)
Taxonomic identifier8355 [NCBI]
Taxonomic lineageEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Amphibia › Batrachia › Anura › Pipoidea › Pipidae › Xenopodinae › Xenopus › Xenopus

Protein attributes

Sequence length665 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at transcript level

General annotation (Comments)

Function

Flavoprotein (FP) subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q) By similarity.

Catalytic activity

Succinate + ubiquinone = fumarate + ubiquinol.

Cofactor

FAD By similarity.

Pathway

Carbohydrate metabolism; tricarboxylic acid cycle; fumarate from succinate (eukaryal route): step 1/1.

Subunit structure

Component of complex II composed of four subunits: the flavoprotein (FP) sdha, iron-sulfur protein (IP) sdhb, and a cytochrome b560 composed of sdhc and sdhd. Interacts with sdhaf2/sdh5; interaction is required for FAD attachment By similarity.

Subcellular location

Mitochondrion inner membrane; Peripheral membrane protein; Matrix side By similarity.

Sequence similarities

Belongs to the FAD-dependent oxidoreductase 2 family. FRD/SDH subfamily.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Transit peptide1 – 4343Mitochondrion Potential
Chain44 – 665622Succinate dehydrogenase [ubiquinone] flavoprotein subunit B, mitochondrial
PRO_0000272306

Regions

Nucleotide binding71 – 766FAD By similarity
Nucleotide binding94 – 10916FAD By similarity
Nucleotide binding459 – 4602FAD By similarity

Sites

Active site3431Proton acceptor By similarity
Binding site2781FAD By similarity
Binding site2991Substrate By similarity
Binding site3111Substrate By similarity
Binding site4101Substrate By similarity
Binding site4431FAD By similarity
Binding site4541Substrate By similarity

Amino acid modifications

Modified residue1021Tele-8alpha-FAD histidine By similarity

Sequences

Sequence LengthMass (Da)Tools
Q801S2 [UniParc].

Last modified June 1, 2003. Version 1.
Checksum: 1A2706ED6B4B0B4E

FASTA66572,754
        10         20         30         40         50         60 
MALLKVAPSR LLSRALQLTS TLQNCTATSI AARRNFHFTV YGRKDTSAKV SDSISTQYPV 

        70         80         90        100        110        120 
VDHDFDAVVV GAGGAGLRAA FGLSEAGFNT ACITKLFPTR SHTVAAQGGI NAALGNMEDD 

       130        140        150        160        170        180 
DWRWHFYDTV KGSDWLGDQD AIHYMTEQAP ASVIELENYG MPFSRTEQGK IYQRAFGGQS 

       190        200        210        220        230        240 
LKYGKGGQAH RCCCVADRTG HSLLHTLYGR SLRYDTSYFV EYFALDLLME NGECRGVIAL 

       250        260        270        280        290        300 
CMEDGSIHRF RAKNTVIATG GYGRTYFSCT SAHTCTGDGT AMVTRAGLPC QDLEFVQFHP 

       310        320        330        340        350        360 
TGIYGAGCLI TEGCRGEGGI LINSEGERFM ERYAPVAKDL ASRDVVSRSM TIEMREGRGC 

       370        380        390        400        410        420 
GKDKDHVYLQ LHHLPPSQLA SRLPGISETA MIFAGVDVTK EPIPVLPTVH YNMGGIPTNY 

       430        440        450        460        470        480 
KGQVITHVNG EDRVVPGLYA CGEAASASVH GANRLGANSL LDLVVFGRAC ALSIAEECKP 

       490        500        510        520        530        540 
GEALPSIKEN AGEESVANLD KLRFANGSTR TSELRLNMQK TMQTHAAVFR TGSVLKEGCE 

       550        560        570        580        590        600 
KLSVINSAMD DLKTFDRGIV WNTDVVETLE LQNLMLCALQ TINSAEARKE SRGAHAREDY 

       610        620        630        640        650        660 
KTRIDEYDYS KPIQGQQKKS FSEHWRKHTL SYVDSKGKVS LEYRPVIDAT LNEDCASVPP 


AIRSY

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References

[1]NIH - Xenopus Gene Collection (XGC) project
Submitted (FEB-2003) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
Tissue: Embryo.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		BC047261 mRNA. Translation: AAH47261.1.
RefSeqNP_001080770.1. NM_001087301.1.
UniGeneXl.1718.

3D structure databases

ProteinModelPortalQ801S2.
SMRQ801S2. Positions 54-665.
ModBaseSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID380463.
KEGGxla:380463.

Organism-specific databases

CTD6389.
XenbaseXB-GENE-956949. sdha.

Phylogenomic databases

HOVERGENHBG001461.
KOK00234.

Enzyme and pathway databases

UniPathwayUPA00223; UER01006.

Family and domain databases

Gene3D1.20.58.100. 1 hit.
3.90.700.10. 1 hit.
InterProIPR003953. FAD_bind_dom.
IPR003952. FRD_SDH_FAD_BS.
IPR015939. Fum_Rdtase/Succ_DH_flav-like_C.
IPR027477. Succ_DH/fumarate_Rdtase_cat.
IPR011281. Succ_DH_flav_su_fwd.
IPR014006. Succ_Dhase_FrdA_Gneg.
[Graphical view]
PANTHERPTHR11632:SF5. PTHR11632:SF5. 1 hit.
PfamPF00890. FAD_binding_2. 1 hit.
PF02910. Succ_DH_flav_C. 1 hit.
[Graphical view]
SUPFAMSSF56425. SSF56425. 1 hit.
SSF46977. Succ_DH_flav_C. 1 hit.
TIGRFAMsTIGR01816. sdhA_forward. 1 hit.
TIGR01812. sdhA_frdA_Gneg. 1 hit.
PROSITEPS00504. FRD_SDH_FAD_BINDING. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameDHSAB_XENLA
AccessionPrimary (citable) accession number: Q801S2
Entry history
Integrated into UniProtKB/Swiss-Prot: January 23, 2007
Last sequence update: June 1, 2003
Last modified: May 29, 2013
This is version 81 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Relevant documents

PATHWAY comments

Index of metabolic and biosynthesis pathways

SIMILARITY comments

Index of protein domains and families

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