View source for 5ctd


==Crystal structure of the type IX collagen NC2 hetero-trimerization domain with a guest fragment a2a1a1 of type I collagen==
<StructureSection load='5ctd' size='340' side='right'caption='[[5ctd]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5ctd]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5CTD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5CTD FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5ctd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ctd OCA], [https://pdbe.org/5ctd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ctd RCSB], [https://www.ebi.ac.uk/pdbsum/5ctd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ctd ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/CO1A1_HUMAN CO1A1_HUMAN] Defects in COL1A1 are the cause of Caffey disease (CAFFD) [MIM:[https://omim.org/entry/114000 114000]; also known as infantile cortical hyperostosis. Caffey disease is characterized by an infantile episode of massive subperiosteal new bone formation that typically involves the diaphyses of the long bones, mandible, and clavicles. The involved bones may also appear inflamed, with painful swelling and systemic fever often accompanying the illness. The bone changes usually begin before 5 months of age and resolve before 2 years of age.<ref>PMID:8988177</ref> <ref>PMID:12660034</ref> <ref>PMID:15864348</ref>   Defects in COL1A1 are a cause of Ehlers-Danlos syndrome type 1 (EDS1) [MIM:[https://omim.org/entry/130000 130000]; also known as Ehlers-Danlos syndrome gravis. EDS is a connective tissue disorder characterized by hyperextensible skin, atrophic cutaneous scars due to tissue fragility and joint hyperlaxity. EDS1 is the severe form of classic Ehlers-Danlos syndrome.<ref>PMID:8988177</ref> <ref>PMID:12660034</ref> <ref>PMID:10739762</ref> <ref>PMID:17211858</ref>   Defects in COL1A1 are the cause of Ehlers-Danlos syndrome type 7A (EDS7A) [MIM:[https://omim.org/entry/130060 130060]; also known as autosomal dominant Ehlers-Danlos syndrome type VII. EDS is a connective tissue disorder characterized by hyperextensible skin, atrophic cutaneous scars due to tissue fragility and joint hyperlaxity. EDS7A is marked by bilateral congenital hip dislocation, hyperlaxity of the joints, and recurrent partial dislocations.<ref>PMID:8988177</ref> <ref>PMID:12660034</ref>   Defects in COL1A1 are a cause of osteogenesis imperfecta type 1 (OI1) [MIM:[https://omim.org/entry/166200 166200]. A dominantly inherited connective tissue disorder characterized by bone fragility and blue sclerae. Osteogenesis imperfecta type 1 is non-deforming with normal height or mild short stature, and no dentinogenesis imperfecta.<ref>PMID:8988177</ref> <ref>PMID:12660034</ref> <ref>PMID:3244312</ref> <ref>PMID:2794057</ref> <ref>PMID:1718984</ref> <ref>PMID:1634225</ref> <ref>PMID:1737847</ref> <ref>PMID:8223589</ref> <ref>PMID:16705691</ref> <ref>PMID:16786509</ref> <ref>PMID:16638323</ref> <ref>PMID:17875077</ref> <ref>PMID:18670065</ref>   Defects in COL1A1 are a cause of osteogenesis imperfecta type 2 (OI2) [MIM:[https://omim.org/entry/166210 166210]; also known as osteogenesis imperfecta congenita. A connective tissue disorder characterized by bone fragility, with many perinatal fractures, severe bowing of long bones, undermineralization, and death in the perinatal period due to respiratory insufficiency.  Defects in COL1A1 are a cause of osteogenesis imperfecta type 3 (OI3) [MIM:[https://omim.org/entry/259420 259420]. A connective tissue disorder characterized by progressively deforming bones, very short stature, a triangular face, severe scoliosis, grayish sclera, and dentinogenesis imperfecta.  Defects in COL1A1 are a cause of osteogenesis imperfecta type 4 (OI4) [MIM:[https://omim.org/entry/166220 166220]; also known as osteogenesis imperfecta with normal sclerae. A connective tissue disorder characterized by moderately short stature, mild to moderate scoliosis, grayish or white sclera and dentinogenesis imperfecta.  Genetic variations in COL1A1 are a cause of susceptibility to osteoporosis (OSTEOP) [MIM:[https://omim.org/entry/166710 166710]; also known as involutional or senile osteoporosis or postmenopausal osteoporosis. Osteoporosis is characterized by reduced bone mass, disruption of bone microarchitecture without alteration in the composition of bone. Osteoporotic bones are more at risk of fracture.<ref>PMID:8988177</ref> <ref>PMID:12660034</ref> <ref>PMID:8841196</ref> <ref>PMID:9535665</ref>   Note=A chromosomal aberration involving COL1A1 is found in dermatofibrosarcoma protuberans. Translocation t(17;22)(q22;q13) with PDGF.<ref>PMID:8988177</ref> <ref>PMID:12660034</ref> [https://www.uniprot.org/uniprot/CO9A1_HUMAN CO9A1_HUMAN] Defects in COL9A1 are the cause of multiple epiphyseal dysplasia type 6 (EDM6) [MIM:[https://omim.org/entry/614135 614135]. A generalized skeletal dysplasia associated with significant morbidity. Joint pain, joint deformity, waddling gait, and short stature are the main clinical signs and symptoms. Radiological examination of the skeleton shows delayed, irregular mineralization of the epiphyseal ossification centers and of the centers of the carpal and tarsal bones. Multiple epiphyseal dysplasia is broadly categorized into the more severe Fairbank and the milder Ribbing types. The Fairbank type is characterized by shortness of stature, short and stubby fingers, small epiphyses in several joints, including the knee, ankle, hand, and hip. The Ribbing type is confined predominantly to the hip joints and is characterized by hands that are normal and stature that is normal or near-normal.<ref>PMID:11565064</ref>   Defects in COL9A1 are the cause of Stickler syndrome type 4 (STL4) [MIM:[https://omim.org/entry/614134 614134]. An autosomal recessive form of Stickler syndrome, an inherited disorder that associates ocular signs with more or less complete forms of Pierre Robin sequence, bone disorders and sensorineural deafness. Ocular disorders may include juvenile cataract, myopia, strabismus, vitreoretinal or chorioretinal degeneration, retinal detachment, and chronic uveitis. Robin sequence includes an opening in the roof of the mouth (a cleft palate), a large tongue (macroglossia), and a small lower jaw (micrognathia). Bones are affected by slight platyspondylisis and large, often defective epiphyses. Juvenile joint laxity is followed by early signs of arthrosis. The degree of hearing loss varies among affected individuals and may become more severe over time. Syndrome expressivity is variable.<ref>PMID:16909383</ref> 
== Function ==
[https://www.uniprot.org/uniprot/CO1A1_HUMAN CO1A1_HUMAN] Type I collagen is a member of group I collagen (fibrillar forming collagen).[https://www.uniprot.org/uniprot/CO9A1_HUMAN CO9A1_HUMAN] Structural component of hyaline cartilage and vitreous of the eye.
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== Publication Abstract from PubMed ==
Collagen plays a fundamental role in all known metazoans. In collagens three polypeptides form a unique triple-helical structure with a one-residue stagger to fit every third glycine residue in the inner core without disturbing the poly-proline type II helical conformation of each chain. There are homo- and hetero-trimeric types of collagen consisting of one, two or three distinct chains. Thus there must be mechanisms that control composition and stagger during collagen folding. Here, we uncover the structural basis for both chain selection and stagger formation of a collagen molecule. Three distinct chains (alpha1, alpha2 and alpha3) of the non-collagenous domain 2 (NC2) of type IX collagen are assembled to guide triple-helical sequences in the leading, middle and trailing positions. This unique domain opens the door for generating any fragment of collagen in its native composition and stagger.

Structural insight for chain selection and stagger control in collagen.,Boudko SP, Bachinger HP Sci Rep. 2016 Nov 29;6:37831. doi: 10.1038/srep37831. PMID:27897211<ref>PMID:27897211</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
*[[Collagen 3D structures|Collagen 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Bachinger HP]]
[[Category: Boudko SP]]