1a4v
From Proteopedia
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|PDB= 1a4v |SIZE=350|CAPTION= <scene name='initialview01'>1a4v</scene>, resolution 1.8Å | |PDB= 1a4v |SIZE=350|CAPTION= <scene name='initialview01'>1a4v</scene>, resolution 1.8Å | ||
|SITE= <scene name='pdbsite=CB1:Ca+Binding+Site+In+The+Ca-Binding-Elbow+Region+Is+Referr+...'>CB1</scene> and <scene name='pdbsite=CB2:This+Is+The+Secondary+Ca+Binding+Site.+At+This+Site+The+...'>CB2</scene> | |SITE= <scene name='pdbsite=CB1:Ca+Binding+Site+In+The+Ca-Binding-Elbow+Region+Is+Referr+...'>CB1</scene> and <scene name='pdbsite=CB2:This+Is+The+Secondary+Ca+Binding+Site.+At+This+Site+The+...'>CB2</scene> | ||
| - | |LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | + | |LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Lactose_synthase Lactose synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.1.22 2.4.1.22] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Lactose_synthase Lactose synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.1.22 2.4.1.22] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1a4v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a4v OCA], [http://www.ebi.ac.uk/pdbsum/1a4v PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1a4v RCSB]</span> | ||
}} | }} | ||
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[[Category: Acharya, K R.]] | [[Category: Acharya, K R.]] | ||
[[Category: Chandra, N.]] | [[Category: Chandra, N.]] | ||
| - | [[Category: CA]] | ||
[[Category: alpha-lactalbumin]] | [[Category: alpha-lactalbumin]] | ||
[[Category: calcium binding]] | [[Category: calcium binding]] | ||
[[Category: lactose synthase]] | [[Category: lactose synthase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 18:33:15 2008'' |
Revision as of 15:33, 30 March 2008
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| , resolution 1.8Å | |||||||
|---|---|---|---|---|---|---|---|
| Sites: | and | ||||||
| Ligands: | |||||||
| Activity: | Lactose synthase, with EC number 2.4.1.22 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
ALPHA-LACTALBUMIN
Overview
The high-resolution X-ray crystal structure of human alpha-lactalbumin (at 1.8 A) in the presence of an elevated level of calcium reveals a new secondary calcium binding site, 7.9 A away from the primary calcium binding site known in all alpha-lactalbumin structures so far. The new calcium binding site is different from the zinc and sulfate binding sites [Ren, J., et al. (1993) J. Biol. Chem. 268, 19292-19298] but shares common features with the manganese binding site as described by Gerkin [Gerkin, T. A. (1984) Biochemistry 23, 4688-4697]. The proximity of the manganese and calcium binding region and the location of the functional site on one side of the charged surface of the alpha-lactalbumin molecule suggest that these binding sites might play a role in the formation of the lactose synthase complex.
About this Structure
1A4V is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structural evidence for the presence of a secondary calcium binding site in human alpha-lactalbumin., Chandra N, Brew K, Acharya KR, Biochemistry. 1998 Apr 7;37(14):4767-72. PMID:9537992
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