1TLE

LE (LAMININ-TYPE EGF-LIKE) MODULE GIII4 IN SOLUTION AT PH 3.5 AND 290 K, NMR, 14 STRUCTURES

1TLE の概要

• エントリーDOI: 10.2210/pdb1tle/pdb
• 分子名称: LAMININ (1 entity in total)
• 機能のキーワード: glycoprotein, extracellular matrix protein, nidogen binding, le-module
• 由来する生物種: Mus musculus (house mouse)
• 細胞内の位置: Secreted, extracellular space, extracellular matrix, basement membrane: P02468
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 6352.21

構造登録者

Baumgartner, R.,Czisch, M.,Mayer, U.,Schl, E.P.,Huber, R.,Timpl, R.,Holak, T.A. (登録日: 1996-01-26, 公開日: 1997-02-12, 最終更新日: 2024-10-30)

主引用文献

Baumgartner, R.,Czisch, M.,Mayer, U.,Poschl, E.,Huber, R.,Timpl, R.,Holak, T.A.
Structure of the nidogen binding LE module of the laminin gamma1 chain in solution.
J.Mol.Biol., 257:658-668, 1996

PubMed Abstract: The structure of the single LE module between residues 791 and 848 of the laminin gamma1 chain, which contains the high affinity binding site for nidogen, has been probed using NMR methods. The module folds into an autonomous domain which has a stable and unique three-dimensional (3D) structure in solution. The 3D structure was determined on the basis of 362 interproton distance constraints derived from nuclear Overhauser enhancement measurements and 39 phi angles, supplemented by 5 psi and 22 chi1 angles. The main features of the NMR structures are two-stranded antiparallel beta-sheets which are separated by loops and cross-connected by four disulfide bridges. The N-terminal segment which contains the first three disulfide bridges is similar to epidermal growth factor. The C-terminal segment has an S-like backbone profile with a crossover at the last disulfide bridge and comprises two three-residue long beta-strands that form an antiparallel beta-sheet. The LE module possesses an exposed nidogen binding loop that projects away from the main body of the protein. The side-chains of three amino acids which are crucial for binding (Asp, Asn, Val) are all exposed at the domain surface. An inactivating Asn-Ser mutation in this region showed the same 3D structure indicating that these three residues, and possibly an additional Tyr in an adjacent loop, provide direct contacts in the interaction with nidogen.

PubMed: 8648631
DOI: 10.1006/jmbi.1996.0192

実験手法

SOLUTION NMR