|ITB1_HUMAN » Integrin beta-1 » Fibronectin receptor subunit beta;Integrin VLA-4 subunit beta;|
|Hydrophobic Thickness||35.2 ± 4.0 Å|
|Tilt Angle||40 ± 0°|
|Links||UniProtKB, Pfam, Interpro, iHOP, STRING, HGNC, Reactome|
|TM Segments||729-757 (729-761)|
Axon guidance (KEGG)
Cell adhesion molecules (KEGG)
Cell-Cell communication (Reactome)
Developmental Biology (Reactome)
Dilated cardiomyopathy (KEGG)
ECM-receptor interaction (KEGG)
Extracellular matrix organization (Reactome)
Focal adhesion (KEGG)
Hypertrophic cardiomyopathy (KEGG)
Immune System (Reactome)
NAD salvage pathway II (BioCyc)
NAD salvage pathway III (BioCyc)
Pathways in cancer (KEGG)
PI3K-Akt signaling pathway (KEGG)
Proteoglycans in cancer (KEGG)
Signal Transduction (Reactome)
Small cell lung cancer (KEGG)
|PDB||4dx9 (6/7...=784-798), 3t9k (758-769), 3vi3 (B/D=21-465), 3vi4 (B/D=21-465), 4wjk (B=21-465), 4wk0 (B=21-465), 4wk2 (B=21-465), 4wk4 (B=21-465), 3g9w (C/D=752-785)|
EPHA2, Complex: EPHA2:ITB1
NRP1, Complex: ITB1:NRP1
SE1L1, Complex: SE1L1:ITB1
|UniProt annotation for ITB1_HUMAN » Integrin beta-1|
|FUNCTION: Integrins alpha-1/beta-1, alpha-2/beta-1, alpha-10/beta- 1 and alpha-11/beta-1 are receptors for collagen. Integrins alpha- 1/beta-1 and alpha-2/beta-2 recognize the proline-hydroxylated sequence G-F-P-G-E-R in collagen. Integrins alpha-2/beta-1, alpha- 3/beta-1, alpha-4/beta-1, alpha-5/beta-1, alpha-8/beta-1, alpha- 10/beta-1, alpha-11/beta-1 and alpha-V/beta-1 are receptors for fibronectin. Alpha-4/beta-1 recognizes one or more domains within the alternatively spliced CS-1 and CS-5 regions of fibronectin. Integrin alpha-5/beta-1 is a receptor for fibrinogen. Integrin alpha-1/beta-1, alpha-2/beta-1, alpha-6/beta-1 and alpha-7/beta-1 are receptors for lamimin. Integrin alpha-4/beta-1 is a receptor for VCAM1. It recognizes the sequence Q-I-D-S in VCAM1. Integrin alpha-9/beta-1 is a receptor for VCAM1, cytotactin and osteopontin. It recognizes the sequence A-E-I-D-G-I-E-L in cytotactin. Integrin alpha-3/beta-1 is a receptor for epiligrin, thrombospondin and CSPG4. Alpha-3/beta-1 may mediate with LGALS3 the stimulation by CSPG4 of endothelial cells migration. Integrin alpha-V/beta-1 is a receptor for vitronectin. Beta-1 integrins recognize the sequence R-G-D in a wide array of ligands. Isoform 2 interferes with isoform 1 resulting in a dominant negative effect on cell adhesion and migration (in vitro). In case of HIV-1 infection, the interaction with extracellular viral Tat protein seems to enhance angiogenesis in Kaposi"s sarcoma lesions. When associated with alpha-7/beta-1 integrin, regulates cell adhesion and laminin matrix deposition. Involved in promoting endothelial cell motility and angiogenesis. Involved in osteoblast compaction through the fibronectin fibrillogenesis cell-mediated matrix assembly process and the formation of mineralized bone nodules. May be involved in up-regulation of the activity of kinases such as PKC via binding to KRT1. Together with KRT1 and GNB2L1/RACK1, serves as a platform for SRC activation or inactivation. Plays a mechanistic adhesive role during telophase, required for the successful completion of cytokinesis. Integrin alpha-3/beta-1 provides a docking site for FAP (seprase) at invadopodia plasma membranes in a collagen-dependent manner and hence may participate in the adhesion, formation of invadopodia and matrix degradation processes, promoting cell invasion. FUNCTION: Isoform 5: Isoform 5 displaces isoform 1 in striated muscles. SUBUNIT: Heterodimer of an alpha and a beta subunit. Beta-1 associates with either alpha-1, alpha-2, alpha-3, alpha-4, alpha- 5, alpha-6, alpha-7, alpha-8, alpha-9, alpha-10, alpha-11 or alpha-V. Interacts with seprase FAP (seprase); the interaction occurs at the cell surface of invadopodia membrane in a collagen- dependent manner. Binds LGALS3BP and NMRK2, when associated with alpha-7, but not with alpha-5. Interacts with FGR and HCK. Interacts (via the cytoplasmic region) with RAB25 (via the hypervariable C-terminal region). Interacts with RAB21. Interacts with KRT1 in the presence of GNB2L1 and SRC. Interacts with AMICA1; integrin alpha-4/beta-1 may regulate leukocyte to endothelial cells adhesion by controlling AMICA1 homodimerization. Interacts with HIV-1 Tat. Binds to human echoviruses 1 and 8 capsid proteins and acts as a receptor for these viruses. Interacts with FLNA, FLNB and RANBP9. Isoform 5 interacts with ACE2. Isoform 1 interacts with the C-terminal region of FLNC. Interacts with MYO10. Interacts with DAB2. Interacts with FERMT2; the interaction is inhibited in presence of ITGB1BP1. Interacts with ITGB1BP1 (via C-terminal region); the interaction is a prerequisite for focal adhesion disassembly. Interacts with TLN1; the interaction is prevented by competitive binding of ITGB1BP1. Interacts with human cytomegalovirus/HHV-5 envelope glycoprotein B/gB. Interacts with ACAP1; required for ITGB1 recycling. Interacts with ASAP3. Isoform 5 interacts with alpha-7A and alpha- 7B in adult skeletal muscle. Isoform 5 interacts with alpha-7B in cardiomyocytes of adult heart. Interacts with EMP2; the interaction may be direct or indirect and ITGB1 has an heterodimer form (By similarity). TISSUE SPECIFICITY: Isoform 1 is widely expressed, other isoforms are generally coexpressed with a more restricted distribution. Isoform 2 is expressed in skin, liver, skeletal muscle, cardiac muscle, placenta, umbilical vein endothelial cells, neuroblastoma cells, lymphoma cells, hepatoma cells and astrocytoma cells. Isoform 3 and isoform 4 are expressed in muscle, kidney, liver, placenta, cervical epithelium, umbilical vein endothelial cells, fibroblast cells, embryonal kidney cells, platelets and several blood cell lines. Isoform 4, rather than isoform 3, is selectively expressed in peripheral T-cells. Isoform 3 is expressed in non- proliferating and differentiated prostate gland epithelial cells and in platelets, on the surface of erythroleukemia cells and in various hematopoietic cell lines. Isoform 5 is expressed specifically in striated muscle (skeletal and cardiac muscle).|
|UniProt features for ITB1_HUMAN » Integrin beta-1|
SIGNAL 1 20 |
CHAIN 21 798 Integrin beta-1.
DOMAIN 140 378 VWFA.
REPEAT 466 515 I.
REPEAT 516 559 II.
REPEAT 560 598 III.
REPEAT 599 635 IV.
REGION 466 635 Cysteine-rich tandem repeats.
REGION 785 792 Interaction with ITGB1BP1.
DISULFID 27 45
DISULFID 35 464
DISULFID 38 64
DISULFID 48 75
DISULFID 207 213
DISULFID 261 301
DISULFID 401 415
DISULFID 435 462
DISULFID 466 691 Probable.
DISULFID 477 489 By similarity.
DISULFID 486 525 By similarity.
DISULFID 491 500 By similarity.
DISULFID 502 516 By similarity.
DISULFID 531 536 By similarity.
DISULFID 533 568 By similarity.
DISULFID 538 553 By similarity.
DISULFID 555 560 By similarity.
DISULFID 574 579 By similarity.
DISULFID 576 607 By similarity.
DISULFID 581 590 By similarity.
DISULFID 592 599 By similarity.
DISULFID 613 618 By similarity.
DISULFID 615 661 By similarity.
DISULFID 620 630 By similarity.
DISULFID 633 636 By similarity.
DISULFID 640 649 By similarity.
DISULFID 646 723 By similarity.
DISULFID 665 699 By similarity.
|Amino Acid Sequence for ITB1_HUMAN » Integrin beta-1|
|MNLQPIFWIG LISSVCCVFA QTDENRCLKA NAKSCGECIQ AGPNCGWCTN STFLQEGMPT SARCDDLEAL KKKGCPPDDI ENPRGSKDIK KNKNVTNRSK GTAEKLKPED ITQIQPQQLV LRLRSGEPQT FTLKFKRAED YPIDLYYLMD LSYSMKDDLE NVKSLGTDLM NEMRRITSDF RIGFGSFVEK TVMPYISTTP AKLRNPCTSE QNCTSPFSYK NVLSLTNKGE VFNELVGKQR ISGNLDSPEG GFDAIMQVAV CGSLIGWRNV TRLLVFSTDA GFHFAGDGKL GGIVLPNDGQ CHLENNMYTM SHYYDYPSIA HLVQKLSENN IQTIFAVTEE FQPVYKELKN LIPKSAVGTL SANSSNVIQL IIDAYNSLSS EVILENGKLS EGVTISYKSY CKNGVNGTGE NGRKCSNISI GDEVQFEISI TSNKCPKKDS DSFKIRPLGF TEEVEVILQY ICECECQSEG IPESPKCHEG NGTFECGACR CNEGRVGRHC ECSTDEVNSE DMDAYCRKEN SSEICSNNGE CVCGQCVCRK RDNTNEIYSG KFCECDNFNC DRSNGLICGG NGVCKCRVCE CNPNYTGSAC DCSLDTSTCE ASNGQICNGR GICECGVCKC TDPKFQGQTC EMCQTCLGVC AEHKECVQCR AFNKGEKKDT CTQECSYFNI TKVESRDKLP QPVQPDPVSH CKEKDVDDCW FYFTYSVNGN NEVMVHVVEN PECPTGPDII PIVAGVVAGI VLIGLALLLI WKLLMIIHDR REFAKFEKEK MNAKWDTGEN PIYKSAVTTV VNPKYEGK|