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Structure of SDF1 in complex with the CXCR4 N-terminus containing no sulfotyrosines
Authors
Volkman, B.F., Veldkamp, C.T., Peterson, F.C.
Assembly
CXCL12/SDF1-alpha, CXCR4
Entity
1. CXCL12/SDF1-alpha (polymer, Thiol state: all disulfide bound), 70 monomers, 8173.634 × 2 Da Detail

GMKPVSLSYR CPCRFFESHV ARANVKHLKI LNTPNCACQI VARLKNNNRQ VCIDPKLKWI QEYLEKCLNK


2. CXCR4 (polymer, Thiol state: not present), 40 monomers, 4515.745 × 2 Da Detail

GSMEGISIYT SDNYTEEMGS GDYDSMKEPA FREENANFNK


Total weight
25378.758 Da
Max. entity weight
8173.634 Da
Entity Connection
disulfide 6 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1disulfidesing1:CYS11:SG1:CYS36:SG
2disulfidesing1:CYS11:SG1:CYS36:SG
3disulfidesing1:CYS13:SG1:CYS52:SG
4disulfidesing1:CYS13:SG1:CYS52:SG
5disulfidesing1:CYS38:SG1:CYS67:SG
6disulfidesing1:CYS67:SG1:CYS38:SG

Source organism
Homo sapiens
Exptl. method
solution NMR
Refine. method
AUTOMATED METHODS WERE USED FOR BACKBONE CHEMICAL SHIFT ASSIGNMENT AND ITERATIVE NOE REFINEMENT. FINAL STRUCTURES WERE OBTAINED BY MOLECULAR DYNAMICS IN EXPLICIT SOLVENT.
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 98.2 %, Completeness: 89.8 %, Completeness (bb): 94.2 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All89.8 % (1177 of 1310)90.8 % (628 of 692)88.2 % (439 of 498)91.7 % (110 of 120)
Backbone94.2 % (612 of 650)94.5 % (208 of 220)93.2 % (303 of 325)96.2 % (101 of 105)
Sidechain86.8 % (664 of 765)89.0 % (420 of 472)84.5 % (235 of 278)60.0 % (9 of 15)
Aromatic74.0 % (74 of 100)92.0 % (46 of 50)55.1 % (27 of 49)100.0 % (1 of 1)
Methyl95.6 % (86 of 90)97.8 % (44 of 45)93.3 % (42 of 45)

1. CXCL12/SDF1-alpha

GMKPVSLSYR CPCRFFESHV ARANVKHLKI LNTPNCACQI VARLKNNNRQ VCIDPKLKWI QEYLEKCLNK

2. CXCR4

GSMEGISIYT SDNYTEEMGS GDYDSMKEPA FREENANFNK

Sample #1

Solvent system 90% H2O, 10% D2O, Pressure 1 atm, Temperature 308 K, pH 6.8, Details 0.310 mM CXCL12 U-15N/13C (dimer concentration), 0.775 mM unlabled CXCR4, 25 mM MES(d13)


#NameIsotope labelingTypeConcentration
1CXCL12/SDF1-alpha[U-100% 13C; U-100% 15N].31 mM
2CXCR4natural abundance.775 mM
3MES(d13)25 mM
4H2O90 %
5D2O10 %
Sample #2

Solvent system 90% H2O, 10% D2O, Pressure 1 atm, Temperature 308 K, pH 6.8, Details 1.0 mM CXCR4 U-15N/13C, 0.625 mM CXCL12 unlabeled (dimer concentration), 25 mM MES(d13)


#NameIsotope labelingTypeConcentration
6CXCR4[U-100% 13C; U-100% 15N]1.0 mM
7CXCL12/SDF1-alphanatural abundance0.625 mM
8MES(d13)25 mM
9H2O90 %
10D2O10 %

LACS Plot; CA
Referencing offset: -0.61 ppm, Outliers: 2 Detail
LACS Plot; CB
Referencing offset: -0.61 ppm, Outliers: 2 Detail
LACS Plot; HA
Referencing offset: 0.0 ppm, Outliers: 1 Detail
LACS Plot; CO
Referencing offset: 0.05 ppm, Outliers: 3 Detail
Protein Blocks Logo
Calculated from 20 models in PDB: 2K04, Strand ID: A, B, C, D Detail


Release date
2008-11-05
Citation
Structural basis of CXCR4 sulfotyrosine recognition by the chemokine SDF-1/CXCL12
Veldkamp, C.T., Seibert, C., Peterson, F.C., De la Cruz, N.B., Haugner, J.C., Basnet, H., Sakmar, T.P., Volkman, B.F.
Sci. Signal. (2008), 1, ra4-ra4, PubMed 18799424 , DOI 10.1126/scisignal.1160755 ,
Related entities 1. CXCL12/SDF1-alpha, : 1 : 30 entities Detail
Related entities 2. CXCR4, : 1 : 1 : 4 : 25 entities Detail
Experiments performed 8 experiments Detail
NMR combined restraints 4 contents Detail
Keywords chemokine, CXCL12, CXCR4, locked dimer, SDF1-alpha, stromal cell derived factor-1