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Protein

Integrin beta-2

Gene

ITGB2

Organism
Ovis aries (Sheep)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at transcript leveli

Functioni

Integrin alpha-L/beta-2 is a receptor for ICAM1, ICAM2, ICAM3 and ICAM4. Integrins alpha-M/beta-2 and alpha-X/beta-2 are receptors for the iC3b fragment of the third complement component and for fibrinogen. Integrin alpha-X/beta-2 recognizes the sequence G-P-R in fibrinogen alpha-chain. Integrin alpha-M/beta-2 recognizes P1 and P2 peptides of fibrinogen gamma chain. Integrin alpha-M/beta-2 is also a receptor for factor X. Integrin alpha-D/beta-2 is a receptor for ICAM3 and VCAM1. Contributes to natural killer cell cytotoxicity. Involved in leukocyte adhesion and transmigration of leukocytes including T-cells and neutrophils. Triggers neutrophil transmigration during lung injury through PTK2B/PYK2-mediated activation. Integrin alpha-L/beta-2 in association with ICAM3, contributes to apoptotic neutrophil phagocytosis by macrophages.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi138Calcium; via carbonyl oxygenBy similarity1
Metal bindingi141CalciumBy similarity1
Metal bindingi142CalciumBy similarity1
Metal bindingi347CalciumBy similarity1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Integrin, Receptor

Keywords - Biological processi

Cell adhesion, Phagocytosis

Keywords - Ligandi

Calcium, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Integrin beta-2
Alternative name(s):
Cell surface adhesion glycoproteins LFA-1/CR3/p150,95 subunit beta
Complement receptor C3 subunit beta
CD_antigen: CD18
Gene namesi
Name:ITGB2
Synonyms:CD18
OrganismiOvis aries (Sheep)
Taxonomic identifieri9940 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaRuminantiaPecoraBovidaeCaprinaeOvis
Proteomesi
  • UP000002356 Componenti: Unplaced

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini23 – 701ExtracellularSequence analysisAdd BLAST679
Transmembranei702 – 724HelicalSequence analysisAdd BLAST23
Topological domaini725 – 770CytoplasmicSequence analysisAdd BLAST46

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 22By similarityAdd BLAST22
ChainiPRO_000027371123 – 770Integrin beta-2Add BLAST748

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi25 ↔ 43By similarity
Disulfide bondi33 ↔ 447By similarity
Disulfide bondi36 ↔ 62By similarity
Disulfide bondi46 ↔ 73By similarity
Glycosylationi50N-linked (GlcNAc...)Sequence analysis1
Glycosylationi116N-linked (GlcNAc...)Sequence analysis1
Disulfide bondi191 ↔ 198By similarity
Disulfide bondi246 ↔ 286By similarity
Glycosylationi254N-linked (GlcNAc...)Sequence analysis1
Disulfide bondi386 ↔ 400By similarity
Disulfide bondi420 ↔ 445By similarity
Disulfide bondi449 ↔ 467By similarity
Disulfide bondi459 ↔ 470By similarity
Disulfide bondi472 ↔ 481By similarity
Disulfide bondi483 ↔ 514By similarity
Disulfide bondi497 ↔ 512By similarity
Glycosylationi501N-linked (GlcNAc...)Sequence analysis1
Disulfide bondi506 ↔ 517By similarity
Disulfide bondi519 ↔ 534By similarity
Disulfide bondi536 ↔ 559By similarity
Disulfide bondi541 ↔ 557By similarity
Disulfide bondi549 ↔ 562By similarity
Disulfide bondi564 ↔ 573By similarity
Disulfide bondi575 ↔ 598By similarity
Disulfide bondi582 ↔ 596By similarity
Disulfide bondi590 ↔ 601By similarity
Disulfide bondi603 ↔ 612By similarity
Disulfide bondi615 ↔ 618By similarity
Disulfide bondi622 ↔ 663By similarity
Disulfide bondi628 ↔ 647By similarity
Disulfide bondi631 ↔ 643By similarity
Glycosylationi642N-linked (GlcNAc...)Sequence analysis1
Disulfide bondi671 ↔ 696By similarity
Modified residuei746PhosphoserineBy similarity1
Modified residuei757PhosphoserineBy similarity1
Modified residuei759PhosphothreonineBy similarity1
Modified residuei761PhosphothreonineBy similarity1

Keywords - PTMi

Disulfide bond, Glycoprotein, Phosphoprotein

Proteomic databases

PRIDEiQ6ECI6.

Interactioni

Subunit structurei

Heterodimer of an alpha and a beta subunit. Beta-2 associates with either alpha-L, alpha-M, alpha-X or alpha-D. Interacts with COPS5 and RANBP9. Interacts with FGR. Interacts with FLNA (via filamin repeats 4, 9, 12, 17, 19, 21, and 23). Interacts with THBD.By similarity

Structurei

3D structure databases

ProteinModelPortaliQ6ECI6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini124 – 363VWFAAdd BLAST240
Repeati449 – 496IAdd BLAST48
Repeati497 – 540IIAdd BLAST44
Repeati541 – 581IIIAdd BLAST41
Repeati582 – 617IVAdd BLAST36

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni449 – 617Cysteine-rich tandem repeatsAdd BLAST169

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Motifi397 – 399Cell attachment siteSequence analysis3

Sequence similaritiesi

Belongs to the integrin beta chain family.Curated
Contains 1 VWFA domain.Curated

Keywords - Domaini

Repeat, Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

HOVERGENiHBG006190.
KOiK06464.

Family and domain databases

Gene3Di3.40.50.410. 1 hit.
InterProiIPR033760. Integin_beta_N.
IPR015812. Integrin_bsu.
IPR015439. Integrin_bsu-2.
IPR014836. Integrin_bsu_cyt_dom.
IPR012896. Integrin_bsu_tail.
IPR002369. Integrin_bsu_VWA.
IPR032695. Integrin_dom.
IPR016201. PSI.
IPR002035. VWF_A.
[Graphical view]
PANTHERiPTHR10082. PTHR10082. 1 hit.
PTHR10082:SF15. PTHR10082:SF15. 1 hit.
PfamiPF08725. Integrin_b_cyt. 1 hit.
PF07965. Integrin_B_tail. 1 hit.
PF00362. Integrin_beta. 1 hit.
PF17205. PSI_integrin. 1 hit.
[Graphical view]
PIRSFiPIRSF002512. Integrin_B. 1 hit.
PRINTSiPR01186. INTEGRINB.
SMARTiSM00187. INB. 1 hit.
SM01241. Integrin_b_cyt. 1 hit.
SM01242. Integrin_B_tail. 1 hit.
SM00423. PSI. 1 hit.
[Graphical view]
SUPFAMiSSF53300. SSF53300. 1 hit.
SSF69179. SSF69179. 1 hit.
SSF69687. SSF69687. 1 hit.
PROSITEiPS00022. EGF_1. 2 hits.
PS01186. EGF_2. 2 hits.
PS00243. INTEGRIN_BETA. 3 hits.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

Q6ECI6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MLPQRPQLLL LAGLLSLQSV LSQECTKYKV STCRDCIESG PGCAWCQKLN
60 70 80 90 100
FTGQGEPDST RCDTRAQLLS KGCPADDIME PKSLAETRQS QAGKQKQLSP
110 120 130 140 150
EEVTLYLRPG QAAAFNVTFQ RAKGYPIDLY YLMDLSYSMV DDLANVKKLG
160 170 180 190 200
GDLLRALNDI TESGRIGFGS FVDKTVLPFV NTHPEKLRNP CPNKEKECQP
210 220 230 240 250
PFAFRHVLKL TDNSKQFETE VGKQLISGNL DAPEGGLDAM MQVAACPEEI
260 270 280 290 300
GWRNVTRLLV FATDDGFHFA GDGKLGAILT PNDGRCHLED NLYKSSNEFD
310 320 330 340 350
YPSVGQLAHK LAESNIQPIF AVTKKMVKTY EKLTEIIPKS AVGELSEDSK
360 370 380 390 400
NVVELIKSAY NKLSSRVFLD HNTLPDTLKV AYDSFCSNGV SQVDQPRGDC
410 420 430 440 450
DGVQINVPIT FQVKVTATEC IQEQSFTIRA LGFTDTVTVR VLPQCECQCR
460 470 480 490 500
EASRDRSVCG GRGSMECGVC RCDAGYIGKN CECQTHGRSS QELEGSCRKD
510 520 530 540 550
NSSIICSGLG DCICGQCVCH TSDVPNKKIY GQFCECDNVN CERYDGQVCG
560 570 580 590 600
GDKRGLCFCG TCRCNDQHEG SACQCLKSTQ GCLNLDGVEC SGRGRCRCNV
610 620 630 640 650
CQCDPGYQPP LCIDCPGCPV PCAGFAPCTE CLKFDKGPFA KNCSAACGQT
660 670 680 690 700
KLLSSPVPGG RKCKERDSEG CWMTYTLVQR DGRNRYDVHV DDMLECVKGP
710 720 730 740 750
NIAAIVGGTV GGVVLVGILL LAIWKALTHL SDLREYHRFE KEKLKSQWNN
760 770
DNPLFKSATT TVMNPKFAES
Length:770
Mass (Da):84,366
Last modified:August 16, 2004 - v1
Checksum:i67F5CECB23018C31
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY484425 mRNA. Translation: AAS55864.1.
AY484426 mRNA. Translation: AAS55865.1.
DQ470837 mRNA. Translation: ABE98168.1.
RefSeqiNP_001009485.1. NM_001009485.1.
UniGeneiOar.3170.

Genome annotation databases

GeneIDi494433.
KEGGioas:494433.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY484425 mRNA. Translation: AAS55864.1.
AY484426 mRNA. Translation: AAS55865.1.
DQ470837 mRNA. Translation: ABE98168.1.
RefSeqiNP_001009485.1. NM_001009485.1.
UniGeneiOar.3170.

3D structure databases

ProteinModelPortaliQ6ECI6.
ModBaseiSearch...
MobiDBiSearch...

Proteomic databases

PRIDEiQ6ECI6.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi494433.
KEGGioas:494433.

Organism-specific databases

CTDi3689.

Phylogenomic databases

HOVERGENiHBG006190.
KOiK06464.

Family and domain databases

Gene3Di3.40.50.410. 1 hit.
InterProiIPR033760. Integin_beta_N.
IPR015812. Integrin_bsu.
IPR015439. Integrin_bsu-2.
IPR014836. Integrin_bsu_cyt_dom.
IPR012896. Integrin_bsu_tail.
IPR002369. Integrin_bsu_VWA.
IPR032695. Integrin_dom.
IPR016201. PSI.
IPR002035. VWF_A.
[Graphical view]
PANTHERiPTHR10082. PTHR10082. 1 hit.
PTHR10082:SF15. PTHR10082:SF15. 1 hit.
PfamiPF08725. Integrin_b_cyt. 1 hit.
PF07965. Integrin_B_tail. 1 hit.
PF00362. Integrin_beta. 1 hit.
PF17205. PSI_integrin. 1 hit.
[Graphical view]
PIRSFiPIRSF002512. Integrin_B. 1 hit.
PRINTSiPR01186. INTEGRINB.
SMARTiSM00187. INB. 1 hit.
SM01241. Integrin_b_cyt. 1 hit.
SM01242. Integrin_B_tail. 1 hit.
SM00423. PSI. 1 hit.
[Graphical view]
SUPFAMiSSF53300. SSF53300. 1 hit.
SSF69179. SSF69179. 1 hit.
SSF69687. SSF69687. 1 hit.
PROSITEiPS00022. EGF_1. 2 hits.
PS01186. EGF_2. 2 hits.
PS00243. INTEGRIN_BETA. 3 hits.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiITB2_SHEEP
AccessioniPrimary (citable) accession number: Q6ECI6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 23, 2007
Last sequence update: August 16, 2004
Last modified: November 30, 2016
This is version 72 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.