CPLM 1.0 - Compendium of Protein Lysine Modification
TagContent
CPLM ID CPLM-001418
UniProt Accession
Genbank Protein ID
Genbank Nucleotide ID
Protein Name
 Gamma-aminobutyric acid type B receptor subunit 2 
Protein Synonyms/Alias
 GABA-B receptor 2; GABA-B-R2; GABA-BR2; GABABR2; Gb2; G-protein coupled receptor 51 
Gene Name
 Gabbr2 
Gene Synonyms/Alias
 Gpr51 
Created Date
 July 27, 2013 
Organism
 Rattus norvegicus (Rat) 
NCBI Taxa ID
 10116 
Lysine Modification
Position
Peptide
Type
References
771NQKKEDSKTSTSVTSubiquitination[1]
800ENHRLRMKITELDKDubiquitination[1]
Reference
 [1] Synaptic protein ubiquitination in rat brain revealed by antibody-based ubiquitome analysis.
 Na CH, Jones DR, Yang Y, Wang X, Xu Y, Peng J.
 J Proteome Res. 2012 Sep 7;11(9):4722-32. [PMID: 22871113
Functional Description
 Receptor for GABA. The activity of this receptor is mediated by G-proteins that inhibit adenylyl cyclase activity, stimulates phospholipase A2, activates potassium channels, inactivates voltage-dependent calcium-channels and modulates inositol phospholipids hydrolysis. Plays a critical role in the fine-tuning of inhibitory synaptic transmission. Pre-synaptic GABA-B-R inhibit neurotransmitter release by down-regulating high- voltage activated calcium channels, whereas postsynaptic GABA-B-R decrease neuronal excitability by activating a prominent inwardly rectifying potassium (Kir) conductance that underlies the late inhibitory postsynaptic potentials. Not only implicated in synaptic inhibition but also in hippocampal long-term potentiation, slow wave sleep, muscle relaxation and antinociception. 
Sequence Annotation
 CARBOHYD 89 89 N-linked (GlcNAc...) (Potential).
 CARBOHYD 297 297 N-linked (GlcNAc...) (Potential).
 CARBOHYD 388 388 N-linked (GlcNAc...) (Potential).
 CARBOHYD 403 403 N-linked (GlcNAc...) (Potential).
 CARBOHYD 452 452 N-linked (GlcNAc...) (Potential).  
Keyword
 Cell junction; Cell membrane; Coiled coil; Complete proteome; G-protein coupled receptor; Glycoprotein; Membrane; Polymorphism; Postsynaptic cell membrane; Receptor; Reference proteome; Signal; Synapse; Transducer; Transmembrane; Transmembrane helix. 
Sequence Source
 UniProt (SWISSPROT/TrEMBL); GenBank; EMBL 
Protein Length
 940 AA 
Protein Sequence
MASPPSSGQP RPPPPPPPPA RLLLPLLLSL LLWLAPGAWG WTRGAPRPPP SSPPLSIMGL 60
MPLTKEVAKG SIGRGVLPAV ELAIEQIRNE SLLRPYFLDL RLYDTECDNA KGLKAFYDAI 120
KYGPNHLMVF GGVCPSVTSI IAESLQGWNL VQLSFAATTP VLADKKKYPY FFRTVPSDNA 180
VNPAILKLLK HFRWRRVGTL TQDVQRFSEV RNDLTGVLYG EDIEISDTES FSNDPCTSVK 240
KLKGNDVRII LGQFDQNMAA KVFCCAFEES MFGSKYQWII PGWYEPAWWE QVHVEANSSR 300
CLRRSLLAAM EGYIGVDFEP LSSKQIKTIS GKTPQQFERE YNSKRSGVGP SKFHGYAYDG 360
IWVIAKTLQR AMETLHASSR HQRIQDFNYT DHTLGKIILN AMNETNFFGV TGQVVFRNGE 420
RMGTIKFTQF QDSREVKVGE YNAVADTLEI INDTIRFQGS EPPKDKTIIL EQLRKISLPL 480
YSILSALTIL GMIMASAFLF FNIKNRNQKL IKMSSPYMNN LIILGGMLSY ASIFLFGLDG 540
SFVSEKTFET LCTVRTWILT VGYTTAFGAM FAKTWRVHAI FKNVKMKKKI IKDQKLLVIV 600
GGMLLIDLCI LICWQAVDPL RRTVERYSME PDPAGRDISI RPLLEHCENT HMTIWLGIVY 660
AYKGLLMLFG CFLAWETRNV SIPALNDSKY IGMSVYNVGI MCIIGAAVSF LTRDQPNVQF 720
CIVALVIIFC STITLCLVFV PKLITLRTNP DAATQNRRFQ FTQNQKKEDS KTSTSVTSVN 780
QASTSRLEGL QSENHRLRMK ITELDKDLEE VTMQLQDTPE KTTYIKQNHY QELNDILSLG 840
NFTESTDGGK AILKNHLDQN PQLQWNTTEP SRTCKDPIED INSPEHIQRR LSLQLPILHH 900
AYLPSIGGVD ASCVSPCVSP TASPRHRHVP PSFRVMVSGL 940 
Gene Ontology
 GO:0030054; C:cell junction; IEA:UniProtKB-KW.
 GO:0005737; C:cytoplasm; IEA:Compara.
 GO:0016021; C:integral to membrane; TAS:RGD.
 GO:0043005; C:neuron projection; IEA:Compara.
 GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
 GO:0045211; C:postsynaptic membrane; IEA:UniProtKB-SubCell.
 GO:0004965; F:G-protein coupled GABA receptor activity; IDA:RGD.
 GO:0007214; P:gamma-aminobutyric acid signaling pathway; IDA:RGD. 
Interpro
 IPR001828; ANF_lig-bd_rcpt.
 IPR000337; GPCR_3.
 IPR017978; GPCR_3_C.
 IPR017979; GPCR_3_CS.
 IPR002455; GPCR_3_GABA_rcpt_B.
 IPR002457; GPCR_3_GABA_rcpt_B2. 
Pfam
 PF00003; 7tm_3
 PF01094; ANF_receptor 
SMART
  
PROSITE
 PS00979; G_PROTEIN_RECEP_F3_1
 PS00980; G_PROTEIN_RECEP_F3_2
 PS00981; G_PROTEIN_RECEP_F3_3
 PS50259; G_PROTEIN_RECEP_F3_4 
PRINTS
 PR01178; GABAB2RECPTR.
 PR01176; GABABRECEPTR.
 PR00248; GPCRMGR.