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Protein

L-lactate dehydrogenase B chain

Gene

LDHB

Organism
Alligator mississippiensis (American alligator)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

Catalytic activityi

(S)-lactate + NAD+ = pyruvate + NADH.

Pathwayi: pyruvate fermentation to lactate

This protein is involved in step 1 of the subpathway that synthesizes (S)-lactate from pyruvate.
Proteins known to be involved in this subpathway in this organism are:
  1. L-lactate dehydrogenase (LDHB), L-lactate dehydrogenase (GTF2H1), L-lactate dehydrogenase A chain (LDHA), L-lactate dehydrogenase B chain (LDHB), L-lactate dehydrogenase (GTF2H1)
This subpathway is part of the pathway pyruvate fermentation to lactate, which is itself part of Fermentation.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes (S)-lactate from pyruvate, the pathway pyruvate fermentation to lactate and in Fermentation.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei99NADBy similarity1
Binding sitei106SubstrateBy similarity1
Binding sitei138NAD or substrateBy similarity1
Binding sitei169SubstrateBy similarity1
Active sitei193Proton acceptorBy similarity1
Binding sitei248SubstrateBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi29 – 57NADBy similarityAdd BLAST29

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionOxidoreductase
LigandNAD

Enzyme and pathway databases

UniPathwayiUPA00554; UER00611.

Names & Taxonomyi

Protein namesi
Recommended name:
L-lactate dehydrogenase B chain (EC:1.1.1.27)
Short name:
LDH-B
Gene namesi
Name:LDHB
OrganismiAlligator mississippiensis (American alligator)
Taxonomic identifieri8496 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiArchelosauriaArchosauriaCrocodyliaAlligatoridaeAlligatorinaeAlligator

Subcellular locationi

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemovedBy similarity
ChainiPRO_00001684682 – 333L-lactate dehydrogenase B chainAdd BLAST332

Proteomic databases

PRIDEiQ9PW05.

Interactioni

Subunit structurei

Homotetramer.By similarity

Structurei

3D structure databases

ProteinModelPortaliQ9PW05.
SMRiQ9PW05.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the LDH/MDH superfamily. LDH family.Curated

Phylogenomic databases

HOVERGENiHBG000462.
KOiK00016.
OrthoDBiEOG091G0HME.

Family and domain databases

Gene3Di3.90.110.10. 1 hit.
HAMAPiMF_00488. Lactate_dehydrog. 1 hit.
InterProiView protein in InterPro
IPR001557. L-lactate/malate_DH.
IPR011304. L-lactate_DH.
IPR018177. L-lactate_DH_AS.
IPR022383. Lactate/malate_DH_C.
IPR001236. Lactate/malate_DH_N.
IPR015955. Lactate_DH/Glyco_Ohase_4_C.
IPR036291. NAD(P)-bd_dom_sf.
PfamiView protein in Pfam
PF02866. Ldh_1_C. 1 hit.
PF00056. Ldh_1_N. 1 hit.
PIRSFiPIRSF000102. Lac_mal_DH. 1 hit.
PRINTSiPR00086. LLDHDRGNASE.
SUPFAMiSSF51735. SSF51735. 1 hit.
SSF56327. SSF56327. 1 hit.
TIGRFAMsiTIGR01771. L-LDH-NAD. 1 hit.
PROSITEiView protein in PROSITE
PS00064. L_LDH. 1 hit.

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q9PW05-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSTLKEKLIT QIASERTIPN SKVTVVGVGQ VGMACAISIL GKRLGDELAL
60 70 80 90 100
VDVWEDKLKG EMMDLQHGSL FLQTHKIVAD KDYAVTANSK IVVVTAGVRQ
110 120 130 140 150
QEGESRLNLV QRNVNVFKFI IPQIIKYSPD CTILVVSNPV DILTYVTWKL
160 170 180 190 200
SGLPKHRVIG SGCNLDSARF RYLMSEKLGI HPSSCHGWIL GEHGDSSVAV
210 220 230 240 250
WSGVNVAGVS LQELNPAMGT DRDSEKWKEV HKQVVESAYE VIKLKGYTNW
260 270 280 290 300
AIGLSVADLL ETMMKNLCRV HPVSTMVKGM YGIENEVFLS LPCVLSASGL
310 320 330
TSVINQKLKD DEVAQLRSSA DTLWSIQKDL KDL
Length:333
Mass (Da):36,665
Last modified:January 23, 2007 - v3
Checksum:i4856FDBD386E58D0
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L79952 mRNA. Translation: AAD46978.1.
RefSeqiNP_001274216.1. NM_001287287.1.

Genome annotation databases

GeneIDi102573484.
KEGGiamj:102573484.

Similar proteinsi

Entry informationi

Entry nameiLDHB_ALLMI
AccessioniPrimary (citable) accession number: Q9PW05
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 16, 2001
Last sequence update: January 23, 2007
Last modified: October 25, 2017
This is version 94 of the entry and version 3 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families