2h43
From Proteopedia
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|PDB= 2h43 |SIZE=350|CAPTION= <scene name='initialview01'>2h43</scene>, resolution 2.7Å | |PDB= 2h43 |SIZE=350|CAPTION= <scene name='initialview01'>2h43</scene>, resolution 2.7Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene> | + | |LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1fzg|1FZG]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2h43 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h43 OCA], [http://www.ebi.ac.uk/pdbsum/2h43 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2h43 RCSB]</span> | ||
}} | }} | ||
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==Overview== | ==Overview== | ||
The beta-chain amino-terminal sequences of all known mammalian fibrins begin with the sequence Gly-His-Arg-Pro- (GHRP-), but the homologous sequence in chicken fibrin begins with the sequence Ala-His-Arg-Pro- (AHRP-). Nonetheless, chicken fibrinogen binds the synthetic peptide GHRPam, and a previously reported crystal structure has revealed that the binding is in exact conformance with that observed for the human GHRPam-fragment D complex. We now report that human fibrinogen, which is known not to bind APRP, binds the synthetic peptide AHRPam. Moreover, a crystal structure of AHRPam complexed with fragment D from human fibrinogen shows that AHRPam binds exclusively to the beta-chain hole and, unlike GHRPam, not at all to the homologous gamma-chain hole. The difference can be attributed to the methyl group of the alanine residue clashing with a critical carboxyl group in the gammaC hole but being accommodated in the roomier betaC hole where the equivalent carboxyl is situated more flexibly. | The beta-chain amino-terminal sequences of all known mammalian fibrins begin with the sequence Gly-His-Arg-Pro- (GHRP-), but the homologous sequence in chicken fibrin begins with the sequence Ala-His-Arg-Pro- (AHRP-). Nonetheless, chicken fibrinogen binds the synthetic peptide GHRPam, and a previously reported crystal structure has revealed that the binding is in exact conformance with that observed for the human GHRPam-fragment D complex. We now report that human fibrinogen, which is known not to bind APRP, binds the synthetic peptide AHRPam. Moreover, a crystal structure of AHRPam complexed with fragment D from human fibrinogen shows that AHRPam binds exclusively to the beta-chain hole and, unlike GHRPam, not at all to the homologous gamma-chain hole. The difference can be attributed to the methyl group of the alanine residue clashing with a critical carboxyl group in the gammaC hole but being accommodated in the roomier betaC hole where the equivalent carboxyl is situated more flexibly. | ||
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| - | ==Disease== | ||
| - | Known diseases associated with this structure: Afibrinogenemia, congenital OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134820 134820]], Afibrinogenemia, congenital OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134830 134830]], Amyloidosis, hereditary renal OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134820 134820]], Dysfibrinogenemia, alpha type, causing bleeding diathesis OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134820 134820]], Dysfibrinogenemia, alpha type, causing recurrent thrombosis OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134820 134820]], Dysfibrinogenemia, beta type OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134830 134830]], Dysfibrinogenemia, gamma type OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134850 134850]], Hypofibrinogenemia, gamma type OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134850 134850]], Thrombophilia, dysfibrinogenemic OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134830 134830]], Thrombophilia, dysfibrinogenemic OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134850 134850]] | ||
==About this Structure== | ==About this Structure== | ||
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[[Category: Doolittle, R F.]] | [[Category: Doolittle, R F.]] | ||
[[Category: Pandi, L.]] | [[Category: Pandi, L.]] | ||
| - | [[Category: CA]] | ||
| - | [[Category: NH2]] | ||
[[Category: coiled-coil]] | [[Category: coiled-coil]] | ||
[[Category: fragment d]] | [[Category: fragment d]] | ||
[[Category: knob-hole interaction]] | [[Category: knob-hole interaction]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:25:11 2008'' |
Revision as of 00:25, 31 March 2008
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| , resolution 2.7Å | |||||||
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| Ligands: | , , , | ||||||
| Related: | 1FZG
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of Human Fragment D Complexed with Ala-His-Arg-Pro-amide
Overview
The beta-chain amino-terminal sequences of all known mammalian fibrins begin with the sequence Gly-His-Arg-Pro- (GHRP-), but the homologous sequence in chicken fibrin begins with the sequence Ala-His-Arg-Pro- (AHRP-). Nonetheless, chicken fibrinogen binds the synthetic peptide GHRPam, and a previously reported crystal structure has revealed that the binding is in exact conformance with that observed for the human GHRPam-fragment D complex. We now report that human fibrinogen, which is known not to bind APRP, binds the synthetic peptide AHRPam. Moreover, a crystal structure of AHRPam complexed with fragment D from human fibrinogen shows that AHRPam binds exclusively to the beta-chain hole and, unlike GHRPam, not at all to the homologous gamma-chain hole. The difference can be attributed to the methyl group of the alanine residue clashing with a critical carboxyl group in the gammaC hole but being accommodated in the roomier betaC hole where the equivalent carboxyl is situated more flexibly.
About this Structure
2H43 is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Differences in binding specificity for the homologous gamma- and beta-chain "holes" on fibrinogen: exclusive binding of Ala-His-Arg-Pro-amide by the beta-chain hole., Doolittle RF, Chen A, Pandi L, Biochemistry. 2006 Nov 28;45(47):13962-9. PMID:17115691
Page seeded by OCA on Mon Mar 31 03:25:11 2008
