9B8V | pdb_00009b8v

AlphaFold2 informed cryo-EM model of the E. coli cellulose synthase BcsAG3B6 complex


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
EecTbetaR2e9b8vE01 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: acid proteaseF: ecTbetaR2ECOD (v294.2)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00535Glycosyl transferase family 2 (Glycos_transf_2)Glycosyl transferase family 2Diverse family, transferring sugar from UDP-glucose, UDP-N-acetyl- galactosamine, GDP-mannose or CDP-abequose, to a range of substrates including cellulose, dolichol phosphate and teichoic acids. Domain
PF07238PilZ domain (PilZ)PilZ domainPilZ is a c-di-GMP binding domain [3] found in widespread cytoplasmic receptors, which is involved in regulation of motility, biofilm formation and virulence of many bacterial pathogens. This domain binds c-di-GMP through RXXXR and [D/N]hSXXG motifs, ...PilZ is a c-di-GMP binding domain [3] found in widespread cytoplasmic receptors, which is involved in regulation of motility, biofilm formation and virulence of many bacterial pathogens. This domain binds c-di-GMP through RXXXR and [D/N]hSXXG motifs, however, some PilZ domains lack these motifs and do not bind c-di-GMP [6]. Proteins which contain PilZ are known to interact with the flagellar switch-complex proteins FliG and FliM. This interaction results in a reduction of torque generation and induces CCW motor bias [5]. This is the canonical PilZ domain whose structure consists of six beta-strands that form a beta barrel, followed by a long C-terminal alpha-helix [6].
Domain
B, C, D
PF11658Cellulose biosynthesis protein BcsG C-terminal domain (CBP_BcsG)Cellulose biosynthesis protein BcsG C-terminal domainCBP_BcsG is a component of bacterial cellulose synthase complex that plays a role in biofilm formation in bacteria [1]. It is a Zn(2+)-dependent phosphoethanolamine transferase that catalyses transfer of phosphoethanolamine residues from membrane pho ...CBP_BcsG is a component of bacterial cellulose synthase complex that plays a role in biofilm formation in bacteria [1]. It is a Zn(2+)-dependent phosphoethanolamine transferase that catalyses transfer of phosphoethanolamine residues from membrane phosphatidylethanolamine to the glucosyl residues in the nascent cellulose chain [2-5]. This entry represents the C-terminal domain which functions as a phosphoethanolamine transferase [5].
Domain
PF03170Cellulose synthase BcsB, first CBM domain (CBM_BcsB_1st)Cellulose synthase BcsB, first CBM domainThis entry includes BcsB from bacteria which is involved in cellulose synthesis. Cellulose synthesis has been identified in several bacteria. In Agrobacterium tumefaciens, for instance, cellulose has a pathogenic role: it allows the bacteria to bind ...This entry includes BcsB from bacteria which is involved in cellulose synthesis. Cellulose synthesis has been identified in several bacteria. In Agrobacterium tumefaciens, for instance, cellulose has a pathogenic role: it allows the bacteria to bind tightly to their host plant cells. While several enzymatic steps are involved in cellulose synthesis, potentially the only step unique to this pathway is that catalysed by cellulose synthase. This enzyme is a multi subunit complex. BcsB binds the positive effector cyclic di-GMP. This subunit is found in several different bacterial cellulose synthase enzymes. The first recognised sequence for this subunit is BcsB. In the AcsII cellulose synthase, this subunit and the subunit corresponding to BcsA are found in the same protein [1-5]. This entry represents the first CBM domain, found at the N-terminal of BcsB [4,5]. It consists of four domains arranged in a triangular shape; there is a structural repeat unit formed by a CBM domain connected to a alpha/beta domain referred to as flavodoxin-like domain (FD) and forms two pairs [4,5].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Cellulose synthase catalytic subunit [UDP-forming]
B, C, D
Cellulose biosynthesis protein BcsG-
Cellulose synthase operon protein B-

Membrane Protein Annotation: PDBTM PDBTM Database Homepage