Q8N2S1 (LTBP4_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 99.
History...
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Latent-transforming growth factor beta-binding protein 4 Short name=LTBP-4 | ||
| Gene names |
| ||
| Organism | Homo sapiens (Human) [Reference proteome] | ||
| Taxonomic identifier | 9606 [NCBI] | ||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 1624 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | May be involved in the assembly, secretion and targeting of TGFB1 to sites at which it is stored and/or activated. May play critical roles in controlling and directing the activity of TGFB1. May have a structural role in the extra cellular matrix (ECM) By similarity. |
| Subunit structure | Forms part of the large latent transforming growth factor beta precursor complex; removal is essential for activation of complex. Interacts with LTBP1 and TGFB1. Binds to FBN1 By similarity. Ref.2 |
| Subcellular location | Secreted › extracellular space › extracellular matrix Ref.2 Ref.5. |
| Tissue specificity | Highly expressed in heart, skeletal muscle, pancreas, uterus, and small intestine. Weakly expressed in placenta and lung. Ref.1 Ref.2 |
| Developmental stage | Very low expression in fetal brain, liver, heart, spleen and thymus. Ref.2 |
| Post-translational modification | Contains hydroxylated asparagine residues By similarity. |
| Involvement in disease | Urban-Rifkin-Davis syndrome (URDS) [MIM:613177]: A syndrome characterized by disrupted pulmonary, gastrointestinal, urinary, musculoskeletal, craniofacial and dermal development. Clinical features include cutis laxa, mild cardiovascular lesions, respiratory distress with cystic and atelectatic changes in the lungs, and diverticulosis, tortuosity and stenosis at various levels of the intestinal tract. Craniofacial features include microretrognathia, flat midface, receding forehead and wide fontanelles. |
| Sequence similarities | Belongs to the LTBP family. Contains 16 EGF-like domains. Contains 4 TB (TGF-beta binding) domains. |
Ontologies
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| ATXN7 | O15265 | 2 | EBI-947718,EBI-708350 | |
| CACNA1A | O00555 | 2 | EBI-947718,EBI-766279 |
Alternative products
| This entry describes 4 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q8N2S1-1) Also known as: LTBP-4L; This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q8N2S1-2) Also known as: LTBP-4S; The sequence of this isoform differs from the canonical sequence as follows: 1-67: Missing. 68-151: RAFCRVRSCQ...QRAPAGKAPV → MAGGVRLLWV...APGGPGFRAF | ||||||
| Isoform 3 (identifier: Q8N2S1-3) The sequence of this isoform differs from the canonical sequence as follows: 1-68: MPRPGTSGRR...QTSRRSRCIR → MGDVKALLFVVAARARRLGGAAASESLAVSE | ||||||
| Isoform 4 (identifier: Q8N2S1-4) The sequence of this isoform differs from the canonical sequence as follows: 1-902: Missing. 903-919: CTCAPGYRPGPRGASCL → MLGGAGGGPGLRTPCPA 1007-1092: Missing. | ||||||
| Note: No experimental confirmation available. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 27 | 27 | Potential | ||||||||
| Chain | 28 – 1624 | 1597 | Latent-transforming growth factor beta-binding protein 4 | PRO_0000310964 | |||||||
Regions | |||||||||||
| Domain | 149 – 181 | 33 | EGF-like 1 | ||||||||
| Domain | 287 – 339 | 53 | TB 1 | ||||||||
| Domain | 357 – 397 | 41 | EGF-like 2; calcium-binding Potential | ||||||||
| Domain | 407 – 459 | 53 | TB 2 | ||||||||
| Domain | 545 – 586 | 42 | EGF-like 3 | ||||||||
| Domain | 587 – 628 | 42 | EGF-like 4; calcium-binding Potential | ||||||||
| Domain | 629 – 670 | 42 | EGF-like 5; calcium-binding Potential | ||||||||
| Domain | 671 – 708 | 38 | EGF-like 6; calcium-binding Potential | ||||||||
| Domain | 710 – 751 | 42 | EGF-like 7; calcium-binding Potential | ||||||||
| Domain | 752 – 793 | 42 | EGF-like 8; calcium-binding Potential | ||||||||
| Domain | 834 – 877 | 44 | EGF-like 9; calcium-binding Potential | ||||||||
| Domain | 878 – 919 | 42 | EGF-like 10; calcium-binding Potential | ||||||||
| Domain | 920 – 960 | 41 | EGF-like 11; calcium-binding Potential | ||||||||
| Domain | 1049 – 1090 | 42 | EGF-like 12; calcium-binding Potential | ||||||||
| Domain | 1181 – 1235 | 55 | TB 3 | ||||||||
| Domain | 1253 – 1295 | 43 | EGF-like 13; calcium-binding Potential | ||||||||
| Domain | 1296 – 1337 | 42 | EGF-like 14; calcium-binding Potential | ||||||||
| Domain | 1349 – 1402 | 54 | TB 4 | ||||||||
| Domain | 1533 – 1573 | 41 | EGF-like 15 | ||||||||
| Domain | 1574 – 1618 | 45 | EGF-like 16 | ||||||||
| Compositional bias | 478 – 565 | 88 | Pro-rich | ||||||||
| Compositional bias | 549 – 1118 | 570 | Cys-rich | ||||||||
| Compositional bias | 1119 – 1175 | 57 | Pro-rich | ||||||||
| Compositional bias | 1407 – 1492 | 86 | Pro-rich | ||||||||
Amino acid modifications | |||||||||||
| Glycosylation | 352 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 425 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 1055 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 1200 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 1339 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Disulfide bond | 153 ↔ 163 | By similarity | |||||||||
| Disulfide bond | 157 ↔ 169 | By similarity | |||||||||
| Disulfide bond | 171 ↔ 180 | By similarity | |||||||||
| Disulfide bond | 361 ↔ 372 | By similarity | |||||||||
| Disulfide bond | 367 ↔ 381 | By similarity | |||||||||
| Disulfide bond | 383 ↔ 396 | By similarity | |||||||||
| Disulfide bond | 549 ↔ 561 | By similarity | |||||||||
| Disulfide bond | 556 ↔ 570 | By similarity | |||||||||
| Disulfide bond | 572 ↔ 585 | By similarity | |||||||||
| Disulfide bond | 591 ↔ 603 | By similarity | |||||||||
| Disulfide bond | 598 ↔ 612 | By similarity | |||||||||
| Disulfide bond | 614 ↔ 627 | By similarity | |||||||||
| Disulfide bond | 633 ↔ 645 | By similarity | |||||||||
| Disulfide bond | 640 ↔ 654 | By similarity | |||||||||
| Disulfide bond | 656 ↔ 669 | By similarity | |||||||||
| Disulfide bond | 675 ↔ 687 | By similarity | |||||||||
| Disulfide bond | 682 ↔ 696 | By similarity | |||||||||
| Disulfide bond | 698 ↔ 707 | By similarity | |||||||||
| Disulfide bond | 714 ↔ 726 | By similarity | |||||||||
| Disulfide bond | 721 ↔ 735 | By similarity | |||||||||
| Disulfide bond | 737 ↔ 750 | By similarity | |||||||||
| Disulfide bond | 756 ↔ 768 | By similarity | |||||||||
| Disulfide bond | 763 ↔ 777 | By similarity | |||||||||
| Disulfide bond | 779 ↔ 792 | By similarity | |||||||||
| Disulfide bond | 838 ↔ 851 | By similarity | |||||||||
| Disulfide bond | 845 ↔ 860 | By similarity | |||||||||
| Disulfide bond | 862 ↔ 876 | By similarity | |||||||||
| Disulfide bond | 882 ↔ 894 | By similarity | |||||||||
| Disulfide bond | 888 ↔ 903 | By similarity | |||||||||
| Disulfide bond | 905 ↔ 918 | By similarity | |||||||||
| Disulfide bond | 924 ↔ 935 | By similarity | |||||||||
| Disulfide bond | 930 ↔ 944 | By similarity | |||||||||
| Disulfide bond | 946 ↔ 959 | By similarity | |||||||||
| Disulfide bond | 1053 ↔ 1065 | By similarity | |||||||||
| Disulfide bond | 1059 ↔ 1074 | By similarity | |||||||||
| Disulfide bond | 1076 ↔ 1089 | By similarity | |||||||||
| Disulfide bond | 1257 ↔ 1270 | By similarity | |||||||||
| Disulfide bond | 1265 ↔ 1279 | By similarity | |||||||||
| Disulfide bond | 1281 ↔ 1294 | By similarity | |||||||||
| Disulfide bond | 1300 ↔ 1312 | By similarity | |||||||||
| Disulfide bond | 1307 ↔ 1321 | By similarity | |||||||||
| Disulfide bond | 1323 ↔ 1336 | By similarity | |||||||||
| Disulfide bond | 1537 ↔ 1548 | By similarity | |||||||||
| Disulfide bond | 1543 ↔ 1557 | By similarity | |||||||||
| Disulfide bond | 1559 ↔ 1572 | By similarity | |||||||||
| Disulfide bond | 1578 ↔ 1593 | By similarity | |||||||||
| Disulfide bond | 1588 ↔ 1602 | By similarity | |||||||||
| Disulfide bond | 1604 ↔ 1617 | By similarity | |||||||||
Natural variations | |||||||||||
| Alternative sequence | 1 – 902 | 902 | Missing in isoform 4. | VSP_029362 | |||||||
| Alternative sequence | 1 – 68 | 68 | MPRPG…SRCIR → MGDVKALLFVVAARARRLGG AAASESLAVSE in isoform 3. | VSP_029363 | |||||||
| Alternative sequence | 1 – 67 | 67 | Missing in isoform 2. | VSP_029364 | |||||||
| Alternative sequence | 68 – 151 | 84 | RAFCR…GKAPV → MAGGVRLLWVSLLVLLAQLG PQPGLGRLGERLRVRFTPVV CGLRCVHGPTGSRCTPTCAP RNATSVDSGAPGGAAPGGPG FRAF in isoform 2. | VSP_029365 | |||||||
| Alternative sequence | 903 – 919 | 17 | CTCAP…GASCL → MLGGAGGGPGLRTPCPA in isoform 4. | VSP_029366 | |||||||
| Alternative sequence | 1007 – 1092 | 86 | Missing in isoform 4. | VSP_029367 | |||||||
| Natural variant | 194 | 1 | V → I. Ref.2 Corresponds to variant rs2303729 [ dbSNP | Ensembl ]. | VAR_037119 | |||||||
| Natural variant | 311 | 1 | C → G in URDS. Ref.6 | VAR_064153 | |||||||
| Natural variant | 635 | 1 | R → G. Corresponds to variant rs33937741 [ dbSNP | Ensembl ]. | VAR_037120 | |||||||
| Natural variant | 679 | 1 | P → A. Corresponds to variant rs34299942 [ dbSNP | Ensembl ]. | VAR_037121 | |||||||
| Natural variant | 787 | 1 | T → A. Ref.2 Corresponds to variant rs1131620 [ dbSNP | Ensembl ]. | VAR_037122 | |||||||
| Natural variant | 820 | 1 | T → A. Ref.2 Corresponds to variant rs1051303 [ dbSNP | Ensembl ]. | VAR_037123 | |||||||
| Natural variant | 1141 | 1 | T → M. Ref.1 Ref.2 Corresponds to variant rs10880 [ dbSNP | Ensembl ]. | VAR_037124 | |||||||
Experimental info | |||||||||||
| Sequence conflict | 170 | 1 | L → F in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 346 | 1 | T → A in BAC11024. Ref.3 | ||||||||
| Sequence conflict | 526 | 1 | L → F in AAC39879. Ref.2 | ||||||||
| Sequence conflict | 526 | 1 | L → F in AAC39880. Ref.2 | ||||||||
| Sequence conflict | 686 | 1 | A → G in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 974 | 1 | G → R in BAC11024. Ref.3 | ||||||||
| Sequence conflict | 1139 | 1 | A → V in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 1142 | 1 | F → S in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 1151 | 1 | A → V in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 1165 | 1 | P → S in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 1169 – 1170 | 2 | ST → RK in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 1173 | 1 | Q → K in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 1180 | 1 | R → C in CAA73944. Ref.1 | ||||||||
| Sequence conflict | 1402 | 1 | C → R in BAC11024. Ref.3 | ||||||||
| Sequence conflict | 1512 | 1 | P → S in BAC11024. Ref.3 | ||||||||
| Sequence conflict | 1546 | 1 | G → D in CAA73944. Ref.1 | ||||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Sequence and expression of a novel member (LTBP-4) of the family of latent transforming growth factor-beta binding proteins." Giltay R., Kostka G., Timpl R. FEBS Lett. 411:164-168(1997) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 3), TISSUE SPECIFICITY, VARIANT MET-1141. |
| [2] | "Identification and characterization of a new latent transforming growth factor-beta-binding protein, LTBP-4." Saharinen J., Taipale J., Monni O., Keski-Oja J. J. Biol. Chem. 273:18459-18469(1998) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 2), SUBCELLULAR LOCATION, ALTERNATIVE SPLICING, TISSUE SPECIFICITY, DEVELOPMENTAL STAGE, INTERACTION WITH LTBP1 AND TGFB1, VARIANTS ILE-194; ALA-787; ALA-820 AND MET-1141. Tissue: Heart. |
| [3] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 4). Tissue: Embryo. |
| [4] | "The DNA sequence and biology of human chromosome 19." Grimwood J., Gordon L.A., Olsen A.S., Terry A., Schmutz J., Lamerdin J.E., Hellsten U., Goodstein D., Couronne O., Tran-Gyamfi M., Aerts A., Altherr M., Ashworth L., Bajorek E., Black S., Branscomb E., Caenepeel S., Carrano A.V. Lucas S.M.Nature 428:529-535(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [5] | "Sequential deposition of latent TGF-beta binding proteins (LTBPs) during formation of the extracellular matrix in human lung fibroblasts." Koli K., Hyytieainen M., Ryynanen M.J., Keski-Oja J. Exp. Cell Res. 310:370-382(2005) [PubMed] [Europe PMC] [Abstract] Cited for: SUBCELLULAR LOCATION. |
| [6] | "Mutations in LTBP4 cause a syndrome of impaired pulmonary, gastrointestinal, genitourinary, musculoskeletal, and dermal development." Urban Z., Hucthagowder V., Schuermann N., Todorovic V., Zilberberg L., Choi J., Sens C., Brown C.W., Clark R.D., Holland K.E., Marble M., Sakai L.Y., Dabovic B., Rifkin D.B., Davis E.C. Am. J. Hum. Genet. 85:593-605(2009) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANT URDS GLY-311. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | Y13622 mRNA. Translation: CAA73944.1. AF051344 mRNA. Translation: AAC39879.2. AF051345 mRNA. Translation: AAC39880.2. AK074499 mRNA. Translation: BAC11024.1. AC010412 Genomic DNA. No translation available. |
| IPI | IPI00395783. IPI00783492. IPI00792792. IPI00873371. |
| RefSeq | NP_001036009.1. NM_001042544.1. NP_001036010.1. NM_001042545.1. NP_003564.2. NM_003573.2. |
| UniGene | Hs.466766. |
3D structure databases | |
| HSSP | HSSP built from PDB template 1KSQ based on UniProtKB P22064. |
| ProteinModelPortal | Q8N2S1. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | Q8N2S1. 30 interactions. |
| MINT | MINT-2794871. |
| STRING | 9606.ENSP00000311905. |
PTM databases | |
| PhosphoSite | Q8N2S1. |
Polymorphism databases | |
| DMDM | 160410003. |
Proteomic databases | |
| PaxDb | Q8N2S1. |
| PRIDE | Q8N2S1. |
Protocols and materials databases | |
| DNASU | 8425. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000308370; ENSP00000311905; ENSG00000090006. |
| GeneID | 8425. |
| KEGG | hsa:8425. |
| UCSC | uc002oog.1. human. uc002ooh.1. human. uc002ooi.1. human. uc002ooj.1. human. |
Organism-specific databases | |
| CTD | 8425. |
| GeneCards | GC19P041099. |
| HGNC | HGNC:6717. LTBP4. |
| HPA | CAB015194. |
| MIM | 604710. gene. 613177. phenotype. |
| neXtProt | NX_Q8N2S1. |
| Orphanet | 221145. Cutis laxa with severe pulmonary, gastrointestinal and urinary anomalies. |
| PharmGKB | PA30480. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG261153. |
| HOGENOM | HOG000293153. |
| HOVERGEN | HBG052370. |
| InParanoid | Q8N2S1. |
| KO | K08023. |
Enzyme and pathway databases | |
| Reactome | REACT_118779. Extracellular matrix organization. |
Gene expression databases | |
| ArrayExpress | Q8N2S1. |
| Bgee | Q8N2S1. |
| CleanEx | HS_LTBP4. |
| Genevestigator | Q8N2S1. |
Family and domain databases | |
| Gene3D | 3.90.290.10. 5 hits. |
| InterPro | IPR026823. cEGF. IPR000742. EG-like_dom. IPR001881. EGF-like_Ca-bd. IPR013032. EGF-like_CS. IPR000152. EGF-type_Asp/Asn_hydroxyl_site. IPR018097. EGF_Ca-bd_CS. IPR017878. TB_dom. [Graphical view] |
| Pfam | PF12662. cEGF. 1 hit. PF07645. EGF_CA. 15 hits. PF00683. TB. 3 hits. [Graphical view] |
| SMART | SM00181. EGF. 4 hits. SM00179. EGF_CA. 16 hits. [Graphical view] |
| SUPFAM | SSF57581. Fibril-assoc. 4 hits. |
| PROSITE | PS00010. ASX_HYDROXYL. 14 hits. PS00022. EGF_1. 2 hits. PS01186. EGF_2. 12 hits. PS50026. EGF_3. 15 hits. PS01187. EGF_CA. 17 hits. PS51364. TB. 4 hits. [Graphical view] |
| ProtoNet | Search... |
Other | |
| ChiTaRS | LTBP4. human. |
| GenomeRNAi | 8425. |
| NextBio | 31524. |
| SOURCE | Search... |
Entry information
| Entry name | LTBP4_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q8N2S1 Secondary accession number(s): O00508, O75412, O75413 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 19 Human chromosome 19: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
