1fcb Summary

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MOLECULAR STRUCTURE OF FLAVOCYTOCHROME B2 AT 2.4 ANGSTROMS RESOLUTION

The structure was published by Xia, Z.X. and Mathews, F.S., in 1990 in a paper entitled "Molecular structure of flavocytochrome b2 at 2.4 A resolution." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.4 Å and deposited in 1990.

The experimental data on which the structure is based was not deposited.

This PDB entry contains multiple copies of the structure of FLAVOCYTOCHROME B2.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule most likely forms homotetramers.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A FLAVOCYTOCHROME B2 P00175 (81-591) (CYB2_YEAST)search Saccharomyces cerevisiae S288csearch < 90% 511 96%
B FLAVOCYTOCHROME B2 P00175 (81-591) (CYB2_YEAST)search Saccharomyces cerevisiae S288csearch < 90% 511 96%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
P00175 (81 - 591) FLAVOCYTOCHROME B2 Saccharomyces cerevisiae

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
A, B FMN-linked oxidoreductasessearch, Cytochrome b5search Flavocytochrome B2, subunit A, domain 1search, Aldolase class Isearch Cytochrome b5-like Heme/Steroid binding domainsearch, FMN-dependent dehydrogenasesearch

Chain ID Biological process (GO) Molecular function (GO)
A, B (P00175) oxidation-reduction processsearch catalytic activitysearch heme bindingsearch oxidoreductase activitysearch FMN bindingsearch

Chain InterPro annotation
A, B FMN-dependent dehydrogenasesearch Cytochrome b5-like heme/steroid binding domainsearch FMN-dependent alpha-hydroxy acid dehydrogenase, active sitesearch Alpha-hydroxy acid dehydrogenase, FMN-dependentsearch Aldolase-type TIM barrelsearch Cytochrome b5, heme-binding sitesearch