LDHA_LINNU
ID LDHA_LINNU Reviewed; 331 AA.
AC O93545;
DT 05-DEC-2001, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 3.
DT 03-AUG-2022, entry version 100.
DE RecName: Full=L-lactate dehydrogenase A chain;
DE Short=LDH-A;
DE EC=1.1.1.27 {ECO:0000250|UniProtKB:P00338};
GN Name=ldha;
OS Lindbergichthys nudifrons (Gaudy notothen) (Lepidonotothen nudifrons).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC Eupercaria; Perciformes; Notothenioidei; Nototheniidae; Lindbergichthys.
OX NCBI_TaxID=83203;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC TISSUE=Muscle;
RX PubMed=9736762; DOI=10.1073/pnas.95.19.11476;
RA Fields P.A., Somero G.N.;
RT "Hot spots in cold adaptation: localized increases in conformational
RT flexibility in lactate dehydrogenase A4 orthologs of Antarctic notothenioid
RT fishes.";
RL Proc. Natl. Acad. Sci. U.S.A. 95:11476-11481(1998).
CC -!- FUNCTION: Interconverts simultaneously and stereospecifically pyruvate
CC and lactate with concomitant interconversion of NADH and NAD(+).
CC {ECO:0000250|UniProtKB:P00338}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(S)-lactate + NAD(+) = H(+) + NADH + pyruvate;
CC Xref=Rhea:RHEA:23444, ChEBI:CHEBI:15361, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:16651, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945; EC=1.1.1.27;
CC Evidence={ECO:0000250|UniProtKB:P00338};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:23445;
CC Evidence={ECO:0000250|UniProtKB:P00338};
CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:23446;
CC Evidence={ECO:0000250|UniProtKB:P00338};
CC -!- PATHWAY: Fermentation; pyruvate fermentation to lactate; (S)-lactate
CC from pyruvate: step 1/1. {ECO:0000250|UniProtKB:P00338}.
CC -!- SUBUNIT: Homotetramer. {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the LDH/MDH superfamily. LDH family.
CC {ECO:0000305}.
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DR EMBL; AF079828; AAC63286.1; -; mRNA.
DR AlphaFoldDB; O93545; -.
DR SMR; O93545; -.
DR UniPathway; UPA00554; UER00611.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0004459; F:L-lactate dehydrogenase activity; IEA:UniProtKB-EC.
DR GO; GO:0019752; P:carboxylic acid metabolic process; IEA:InterPro.
DR Gene3D; 3.90.110.10; -; 1.
DR HAMAP; MF_00488; Lactate_dehydrog; 1.
DR InterPro; IPR001557; L-lactate/malate_DH.
DR InterPro; IPR011304; L-lactate_DH.
DR InterPro; IPR018177; L-lactate_DH_AS.
DR InterPro; IPR022383; Lactate/malate_DH_C.
DR InterPro; IPR001236; Lactate/malate_DH_N.
DR InterPro; IPR015955; Lactate_DH/Glyco_Ohase_4_C.
DR InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR Pfam; PF02866; Ldh_1_C; 1.
DR Pfam; PF00056; Ldh_1_N; 1.
DR PIRSF; PIRSF000102; Lac_mal_DH; 1.
DR PRINTS; PR00086; LLDHDRGNASE.
DR SUPFAM; SSF51735; SSF51735; 1.
DR SUPFAM; SSF56327; SSF56327; 1.
DR TIGRFAMs; TIGR01771; L-LDH-NAD; 1.
DR PROSITE; PS00064; L_LDH; 1.
PE 2: Evidence at transcript level;
KW Cytoplasm; NAD; Oxidoreductase.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250"
FT CHAIN 2..331
FT /note="L-lactate dehydrogenase A chain"
FT /id="PRO_0000168443"
FT ACT_SITE 192
FT /note="Proton acceptor"
FT /evidence="ECO:0000250"
FT BINDING 29..57
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000250"
FT BINDING 98
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000250"
FT BINDING 105
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 137
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000250"
FT BINDING 137
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 168
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 247
FT /ligand="substrate"
FT /evidence="ECO:0000250"
SQ SEQUENCE 331 AA; 36214 MW; 73BE2B6AE327B08E CRC64;
MSTKEKLISH VMKEEPVGSR SKVTVVGVGM VGMASAISIL LKDLCDELAM VDVMEDKLKG
EVMDLQHGSL FLKTKIVGDK DYSVTANSKV VVVTAGARQQ EGESRLNLVQ RNVNIFKFII
PNIVKYSPNC ILMVVSNPVD ILTYVAWKLS GFPRHRVIGS GTNLDSARFR HLIGEKLHLH
PSSCHAWIVG EHGDSSVPVW SGVNVAGVSL QGLNPQMGTE DDGENWKAIH KEVVDGAYEV
IKLKGYTSWA IGMSVADLVE SIIKNMHKVH PVSTLVQGMH GVKDEVFLSV PCVLGNSGLT
DVIHMTLKAE EEKQLQKSAE TLWGVQKELT L
