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Protein

Chondroitin proteoglycan-2

Gene

cpg-2

Organism
Caenorhabditis elegans
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Required for polar body extrusion during cytokinesis in embryo development. Affects cortical granule size. Has roles in meiotic chromosome segregation, osmotic barrier function and polarization in conjunction with cpg-2. Binds chitin.4 Publications

GO - Molecular functioni

  • chitin binding Source: UniProtKB

GO - Biological processi

  • chitin metabolic process Source: InterPro
  • eggshell formation Source: WormBase
  • embryo development Source: UniProtKB
  • mitotic cytokinesis Source: UniProtKB
  • regulation of cytokinesis Source: WormBase

Keywordsi

Molecular functionDevelopmental protein
Biological processCell cycle, Cell division
LigandChitin-binding

Protein family/group databases

CAZyiCBM14. Carbohydrate-Binding Module Family 14.

Names & Taxonomyi

Protein namesi
Recommended name:
Chondroitin proteoglycan-2
Alternative name(s):
Cytokinesis protein B0280.5
Gene namesi
Name:cpg-2
ORF Names:B0280.5
OrganismiCaenorhabditis elegans
Taxonomic identifieri6239 [NCBI]
Taxonomic lineageiEukaryotaMetazoaEcdysozoaNematodaChromadoreaRhabditidaRhabditoideaRhabditidaePeloderinaeCaenorhabditis
Proteomesi
  • UP000001940 Componenti: Chromosome III

Organism-specific databases

WormBaseiB0280.5; CE31868; WBGene00015102; cpg-2.

Subcellular locationi

GO - Cellular componenti

  • external encapsulating structure Source: WormBase
  • perivitelline space Source: WormBase

Pathology & Biotechi

Disruption phenotypei

Worms lacking cpg-2 and cpg-1 exhibit defects in cytokinesis during embryo development more specifically meiotic chromosome segregation, polar-body extrusion, osmotic barrier function and polarization. Embryos lacking cpg-2 and cpg-1 proteins have multiple nuclei lacking plasma membranes and may also have weak egg shells. Oocytes lacking cpg-2 and cpg-1 show cortical granules that are reduced in size.1 Publication

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 18Sequence analysisAdd BLAST18
ChainiPRO_000002361719 – 524Chondroitin proteoglycan-2Add BLAST506

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi54 ↔ 67PROSITE-ProRule annotation
Glycosylationi103O-linked (Xyl...) (chondroitin sulfate) serine1 Publication1
Glycosylationi119O-linked (Xyl...) (chondroitin sulfate) serine1 Publication1
Disulfide bondi168 ↔ 181PROSITE-ProRule annotation
Glycosylationi208O-linked (Xyl...) (chondroitin sulfate) serine1 Publication1
Glycosylationi212O-linked (Xyl...) (chondroitin sulfate) serine1 Publication1
Disulfide bondi277 ↔ 290PROSITE-ProRule annotation
Disulfide bondi337 ↔ 350PROSITE-ProRule annotation
Glycosylationi355N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi432 ↔ 445PROSITE-ProRule annotation
Glycosylationi497N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi500 ↔ 514PROSITE-ProRule annotation

Keywords - PTMi

Disulfide bond, Glycoprotein, Proteoglycan

Proteomic databases

EPDiP41996.
PaxDbiP41996.
PeptideAtlasiP41996.
PRIDEiP41996.

Expressioni

Tissue specificityi

Expressed in the germline.1 Publication

Developmental stagei

Expressed throughout development but appears to be up-regulated in adults.1 Publication

Gene expression databases

BgeeiWBGene00015102.

Interactioni

Protein-protein interaction databases

BioGridi41203. 1 interactor.
MINTiMINT-1061878.
STRINGi6239.B0280.5.1.

Structurei

3D structure databases

ProteinModelPortaliP41996.
SMRiP41996.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini21 – 78Chitin-binding type-2 1PROSITE-ProRule annotationAdd BLAST58
Domaini135 – 192Chitin-binding type-2 2PROSITE-ProRule annotationAdd BLAST58
Domaini244 – 301Chitin-binding type-2 3PROSITE-ProRule annotationAdd BLAST58
Domaini306 – 361Chitin-binding type-2 4PROSITE-ProRule annotationAdd BLAST56
Domaini400 – 456Chitin-binding type-2 5PROSITE-ProRule annotationAdd BLAST57
Domaini469 – 524Chitin-binding type-2 6PROSITE-ProRule annotationAdd BLAST56

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Compositional biasi75 – 258Gly-richAdd BLAST184

Keywords - Domaini

Repeat, Signal

Phylogenomic databases

eggNOGiENOG410IJ6B. Eukaryota.
ENOG4111EXD. LUCA.
GeneTreeiENSGT00650000093766.
HOGENOMiHOG000017714.
InParanoidiP41996.
OMAiCTCDCCA.
OrthoDBiEOG091G0LTG.
PhylomeDBiP41996.

Family and domain databases

Gene3Di2.170.140.10. 6 hits.
InterProiView protein in InterPro
IPR002557. Chitin-bd_dom.
PfamiView protein in Pfam
PF01607. CBM_14. 6 hits.
SMARTiView protein in SMART
SM00494. ChtBD2. 6 hits.
SUPFAMiSSF57625. SSF57625. 6 hits.
PROSITEiView protein in PROSITE
PS50940. CHIT_BIND_II. 6 hits.

Sequencei

Sequence statusi: Complete.

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

P41996-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKTVAALTLL AFATAANGQF LQDCTNALDG LYALGECEPQ FLTCSGGIAR
60 70 80 90 100
IMDCPADLIY NEPLLICDWR HNVIGCEGSG ESSGETSGEG SGESSGEASG
110 120 130 140 150
EGSGEASGEG SGEASGEGSG EASGEGSGSG EETVENVCEN LEDGAYSSGG
160 170 180 190 200
CTTYYFFCTT NTARFLSCPT PLFYDADSQK CIWKSLVEEC KEDLTITDGS
210 220 230 240 250
GETSGEGSGE ASGEASGEGS GEASGESSGQ GSGEASGEGS GELEPTCEGK
260 270 280 290 300
ADGIHPNGVC STNFLTCSGG IARIMDCPAS LVFNPTILVC DWPRDVAECA
310 320 330 340 350
GLPTPQPTCE EDGYFSFGQC SSSFTACTNG RAIVMFCPAG LKFSESTVRC
360 370 380 390 400
DYESNVSECQ ETSGEESGEA SGEQSGEGSG EASGEASGES SGEGSGVEEQ
410 420 430 440 450
NQCVGLDNGL HAIGCSPRVL SCQNGHVDIF ECPSSLVFND QSLICDYPQT
460 470 480 490 500
SLKCLIEDTI LIDETPIAAF DCSTDGLFSD GLCSATYHQC TAGQLINFTC
510 520
AASNAVFSAA NTECVDSSTL LQCH
Length:524
Mass (Da):53,652
Last modified:August 15, 2003 - v3
Checksum:iFFCB9A750385FB34
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
DQ340624 mRNA. Translation: ABC65812.1.
FO080148 Genomic DNA. Translation: CCD61602.1.
PIRiT15299.
RefSeqiNP_498551.3. NM_066150.10.
UniGeneiCel.17405.

Genome annotation databases

EnsemblMetazoaiB0280.5; B0280.5; WBGene00015102.
GeneIDi175991.
KEGGicel:CELE_B0280.5.
UCSCiB0280.5. c. elegans.

Similar proteinsi

Entry informationi

Entry nameiCPG2_CAEEL
AccessioniPrimary (citable) accession number: P41996
Secondary accession number(s): Q1A3T5
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 1995
Last sequence update: August 15, 2003
Last modified: August 30, 2017
This is version 114 of the entry and version 3 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programCaenorhabditis annotation project

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Caenorhabditis elegans
    Caenorhabditis elegans: entries, gene names and cross-references to WormBase