Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyQuinoprotein alcohol dehydrogenase-like 8076952 3001727 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyQuinoprotein alcohol dehydrogenase-like 8076952 3001727 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyQuinoprotein alcohol dehydrogenase-like 8076952 3001727 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyQuinoprotein alcohol dehydrogenase-like 8076952 3001727 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APQQ_2e6fkwA1 A: beta duplicates or obligate multimersX: beta-propeller-likeH: beta-propellerT: 8-bladedF: PQQ_2ECOD (1.6)
BPQQ_2e6fkwB1 A: beta duplicates or obligate multimersX: beta-propeller-likeH: beta-propellerT: 8-bladedF: PQQ_2ECOD (1.6)
CPQQ_2e6fkwC1 A: beta duplicates or obligate multimersX: beta-propeller-likeH: beta-propellerT: 8-bladedF: PQQ_2ECOD (1.6)
DPQQ_2e6fkwD1 A: beta duplicates or obligate multimersX: beta-propeller-likeH: beta-propellerT: 8-bladedF: PQQ_2ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A2.140.10.10 Mainly Beta 8 Propeller Methanol Dehydrogenase Chain ACATH (4.3.0)
B2.140.10.10 Mainly Beta 8 Propeller Methanol Dehydrogenase Chain ACATH (4.3.0)
C2.140.10.10 Mainly Beta 8 Propeller Methanol Dehydrogenase Chain ACATH (4.3.0)
D2.140.10.10 Mainly Beta 8 Propeller Methanol Dehydrogenase Chain ACATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C, D
PF13360PQQ-like domain (PQQ_2)PQQ-like domain- Repeat
A, B, C, D
PF13570PQQ-like domain (PQQ_3)PQQ-like domain- Repeat

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

ChainsEnzyme NameDescriptionCatalytic Residues
lanthanide-dependent methanol dehydrogenase  M-CSA #997

Lanthanide-dependent methanol dehydrogenase is a widespread enzyme used by methylotrophic bacteria to oxidise methanol for carbon and energy. The enzyme requires early lanthanide (Ln) metals in the 3+ oxidation state for catalytic activity.

Across the series (La-Lu), catalytic activity of Ln-MDH decreases; Eu-MDH shows significantly lower catalytic activity than Ce-MDH, and Yb-MDH shows no catalytic activity. This is attributed to the lanthanide contraction effect whereby the ionic radius of Ln ions decreases as atomic number increases. In turn metal-ligand bond lengths decreases and Lewis acidity increases. Despite this, however, we observe a decrease in activity across the series.

Nearly all strains of Methylobacterium have at least two types of MDHs, such as MxaFI, a Ca2+-dependent MDH, and XoxF, an Ln-dependent MDH. In contrast to Ca2+-dependent MDH (EC 1.1.2.7), Ln-dependent MDH shows little activity with Ca2+.

Defined by 4 residues: GLU:A-172ASN:A-256ASP:A-299ASP:A-301
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