Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
HSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
JSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
LSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
MSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
OSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
RSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
SSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
USCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
WSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
ESCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
FSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
GSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
ISCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
KSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
NSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
PSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
QSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
TSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
VSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)
XSCOP2B SuperfamilyMtdA-like8001046 3000046 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AF_UNCLASSIFIEDe6tgeA1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
APF09176e6tgeA2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
CF_UNCLASSIFIEDe6tgeC1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
CPF09176e6tgeC2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
HF_UNCLASSIFIEDe6tgeH2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
HPF09176e6tgeH1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
JF_UNCLASSIFIEDe6tgeJ2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
JPF09176e6tgeJ1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
LF_UNCLASSIFIEDe6tgeL1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
LPF09176e6tgeL2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
MF_UNCLASSIFIEDe6tgeM2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
MPF09176e6tgeM1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
OF_UNCLASSIFIEDe6tgeO1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
OPF09176e6tgeO2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
RF_UNCLASSIFIEDe6tgeR2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
RPF09176e6tgeR1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
SF_UNCLASSIFIEDe6tgeS2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
SPF09176e6tgeS1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
UF_UNCLASSIFIEDe6tgeU1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
UPF09176e6tgeU2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
WF_UNCLASSIFIEDe6tgeW2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
WPF09176e6tgeW1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
BF_UNCLASSIFIEDe6tgeB2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
BPF09176e6tgeB1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
DF_UNCLASSIFIEDe6tgeD2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
DPF09176e6tgeD1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
EF_UNCLASSIFIEDe6tgeE1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
EPF09176e6tgeE2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
FF_UNCLASSIFIEDe6tgeF2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
FPF09176e6tgeF1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
GF_UNCLASSIFIEDe6tgeG1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
GPF09176e6tgeG2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
IF_UNCLASSIFIEDe6tgeI1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
IPF09176e6tgeI2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
KF_UNCLASSIFIEDe6tgeK2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
KPF09176e6tgeK1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
NF_UNCLASSIFIEDe6tgeN2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
NPF09176e6tgeN1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
PF_UNCLASSIFIEDe6tgeP1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
PPF09176e6tgeP2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
QF_UNCLASSIFIEDe6tgeQ1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
QPF09176e6tgeQ2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
TF_UNCLASSIFIEDe6tgeT2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
TPF09176e6tgeT1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
VF_UNCLASSIFIEDe6tgeV2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
VPF09176e6tgeV1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)
XF_UNCLASSIFIEDe6tgeX2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NAD(P)-binding Rossmann-fold domainsF: F_UNCLASSIFIEDECOD (1.6)
XPF09176e6tgeX1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Aminoacid dehydrogenase-like, N-terminal domainF: PF09176ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
A3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
C3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
C3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
H3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
H3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
J3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
J3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
L3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
L3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
M3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
M3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
O3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
O3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
R3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
R3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
S3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
S3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
U3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
U3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
W3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
W3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
B3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
B3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
D3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
D3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
E3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
E3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
F3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
F3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
G3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
G3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
I3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
I3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
K3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
K3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
N3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
N3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
P3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
P3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
Q3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
Q3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
T3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
T3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
V3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
V3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)
X3.40.50.10280 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domainCATH (utative)
X3.40.50.720 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold NAD(P)-binding Rossmann-like DomainCATH (utative)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C, D, E
PF09176Methylene-tetrahydromethanopterin dehydrogenase, N-terminal (Mpt_N)Methylene-tetrahydromethanopterin dehydrogenase, N-terminalMembers of this family adopt a alpha-beta structure, with a core comprising three alpha/beta/alpha layers, in which each sheet contains four strands. They are predominantly found in prokaryotic methylene-tetrahydromethanopterin dehydrogenase, which c ...Members of this family adopt a alpha-beta structure, with a core comprising three alpha/beta/alpha layers, in which each sheet contains four strands. They are predominantly found in prokaryotic methylene-tetrahydromethanopterin dehydrogenase, which catalyses the dehydrogenation of methylene-tetrahydromethanopterin and the reversible dehydrogenation of methylene-H(4)F [1].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B, C, D, E
Bifunctional NADP-dependent methylenetetrahydromethanopterin dehydrogenase/methylenetetrahydrofolate dehydrogenase

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A, B, C, D, E
IPR037089Methylene-tetrahydromethanopterin dehydrogenase, N-terminal domain superfamilyHomologous Superfamily
A, B, C, D, E
IPR036291NAD(P)-binding domain superfamilyHomologous Superfamily
A, B, C, D, E
IPR046346Aminoacid dehydrogenase-like, N-terminal domain superfamilyHomologous Superfamily
A, B, C, D, E
IPR035015Methylene tetrahydromethanopterin dehydrogenase, NADP-binding domainDomain
A, B, C, D, E
IPR015259Methylene-tetrahydromethanopterin dehydrogenase, N-terminalDomain