Summary: Alanine dehydrogenase/PNT, C-terminal domain
Alanine dehydrogenase/PNT, C-terminal domain Provide feedback
This family now also contains the lysine 2-oxoglutarate reductases.
Internal database links
|Similarity to PfamA using HHSearch:||Pyr_redox 2-Hacid_dh_C HI0933_like NAD_binding_2 Shikimate_DH TrkA_N|
External database links
|HOMSTRAD:||AlaDh_PNT_D1 AlaDh_PNT_D2 AlaDh_PNT|
This tab holds annotation information from the InterPro database.
InterPro entry IPR007698
Alanine dehydrogenase catalyses the NAD-dependent reversible reductive amination of pyruvate into alanine. Pyridine nucleotide transhydrogenase catalyses the reduction of NADP+ to NADPH with the concomitant oxidation of NADH to NAD+. This enzyme is located in the plasma membrane of prokaryotes and in the inner membrane of the mitochondria of eukaryotes. The transhydrogenation between NADH and NADP is coupled with the translocation of a proton across the membrane. In prokaryotes the enzyme is composed of two different subunits, an alpha chain (gene pntA) and a beta chain (gene pntB), while in eukaryotes it is a single chain protein.
The sequence of alanine dehydrogenase from several bacterial species is related with that of the alpha subunit of bacterial pyridine nucleotide transhydrogenase and the N-terminal half of the eukaryotic enzyme. The two most conserved regions correspond respectively to the N-terminal domain of these proteins, and to a central glycine-rich region which is part of the NAD(H)-binding site [PUBMED:8439307]. This entry represents a domain found in alanine dehydrogenase and pyridine nucleotide transhydrogenase, containing the glycine-rich region. This domain is also found in lysine 2-oxoglutarate reductases [PUBMED:11354603].
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A class of redox enzymes are two domain proteins. One domain, termed the catalytic domain, confers substrate specificity and the precise reaction of the enzyme. The other domain, which is common to this class of redox enzymes, is a Rossmann-fold domain. The Rossmann domain binds nicotinamide adenine dinucleotide (NAD+) and it is this cofactor that reversibly accepts a hydride ion, which is lost or gained by the substrate in the redox reaction. Rossmann domains have an alpha/beta fold, which has a central beta sheet, with approximately five alpha helices found surrounding the beta sheet.The strands forming the beta sheet are found in the following characteristic order 654123. The inter sheet crossover of the stands in the sheet form the NAD+ binding site . In some more distantly relate Rossmann domains the NAD+ cofactor is replaced by the functionally similar cofactor FAD.
The clan contains the following 180 members:2-Hacid_dh_C 3Beta_HSD 3HCDH_N adh_short adh_short_C2 ADH_zinc_N ADH_zinc_N_2 AdoHcyase_NAD AdoMet_MTase AlaDh_PNT_C Amino_oxidase ApbA AviRa Bac_GDH Bin3 CheR CMAS CmcI CoA_binding CoA_binding_2 CoA_binding_3 Cons_hypoth95 DAO DapB_N DFP DNA_circ_N DNA_methylase DOT1 DREV dTMP_synthase DUF1442 DUF1776 DUF2431 DUF268 DUF3321 DUF43 DUF633 DUF938 DXP_redisom_C DXP_reductoisom Eco57I ELFV_dehydrog Eno-Rase_FAD_bd Eno-Rase_NADH_b Enoyl_reductase Epimerase F420_oxidored FAD_binding_2 FAD_binding_3 FAD_oxidored Fibrillarin FMO-like FmrO FtsJ G-7-MTase G6PD_N GCD14 GDI GFO_IDH_MocA GIDA GidB GLF Glyco_hydro_4 GMC_oxred_N Gp_dh_N GRAS GRDA HI0933_like HIM1 IlvN K_oxygenase KR LCM Ldh_1_N Lycopene_cycl Malic_M Mannitol_dh Met_10 Methyltrans_Mon Methyltrans_SAM Methyltransf_10 Methyltransf_11 Methyltransf_12 Methyltransf_15 Methyltransf_16 Methyltransf_17 Methyltransf_18 Methyltransf_19 Methyltransf_2 Methyltransf_20 Methyltransf_21 Methyltransf_22 Methyltransf_23 Methyltransf_24 Methyltransf_25 Methyltransf_26 Methyltransf_27 Methyltransf_28 Methyltransf_29 Methyltransf_3 Methyltransf_30 Methyltransf_31 Methyltransf_32 Methyltransf_4 Methyltransf_5 Methyltransf_7 Methyltransf_8 Methyltransf_9 Methyltransf_PK MethyltransfD12 MetW Mg-por_mtran_C Mqo MT-A70 MTS Mur_ligase N2227 N6-adenineMlase N6_Mtase N6_N4_Mtase NAD_binding_10 NAD_binding_11 NAD_binding_2 NAD_binding_3 NAD_binding_4 NAD_binding_5 NAD_binding_7 NAD_binding_8 NAD_binding_9 NAD_Gly3P_dh_N NAS NmrA NNMT_PNMT_TEMT NodS Nol1_Nop2_Fmu Nol1_Nop2_Fmu_2 NSP13 OCD_Mu_crystall PARP_regulatory PCMT PDH Polysacc_synt_2 Pox_MCEL Prenylcys_lyase PrmA PRMT5 Pyr_redox Pyr_redox_2 Pyr_redox_3 RmlD_sub_bind Rossmann-like rRNA_methylase RrnaAD Rsm22 RsmJ Saccharop_dh SAM_MT SE Semialdhyde_dh Shikimate_DH Spermine_synth Strep_67kDa_ant TehB THF_DHG_CYH_C Thi4 ThiF TPMT TrkA_N TRM TRM13 tRNA_U5-meth_tr Trp_halogenase TylF Ubie_methyltran UDPG_MGDP_dh_N UPF0020 UPF0146 V_cholerae_RfbT XdhC_C YjeF_N
We make a range of alignments for each Pfam-A family:
- the curated alignment from which the HMM for the family is built
- the alignment generated by searching the sequence database using the HMM
- Representative Proteomes (RPs) at 15%, 35%, 55% and 75% co-membership thresholds
- alignment generated by searching the NCBI sequence database using the family HMM
- alignment generated by searching the metagenomics sequence database using the family HMM
You can see the alignments as HTML or in three different sequence viewers:
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Curation and family details
|Seed source:||Pfam-B_4166 (release 6.6)|
|Author:||Finn RD, Bateman A|
|Number in seed:||96|
|Number in full:||5257|
|Average length of the domain:||153.50 aa|
|Average identity of full alignment:||35 %|
|Average coverage of the sequence by the domain:||34.75 %|
|HMM build commands:||
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq
|Family (HMM) version:||16|
|Download:||download the raw HMM for this family|
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There are 2 interactions for this family. More...
We determine these interactions using iPfam, which considers the interactions between residues in three-dimensional protein structures and maps those interactions back to Pfam families. You can find more information about the iPfam algorithm in the journal article that accompanies the website.
For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the AlaDh_PNT_C domain has been found. There are 97 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein seqence.
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