Contacts of the strand formed by residues 122 - 128 (chain A) in PDB entry 1X9L
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with GLU 122 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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117A PRO 4.2 3.1 - - - +
118A LEU* 3.5 10.1 - - - +
119A LYS* 2.5 64.4 + - + +
120A VAL 3.6 0.2 - - - -
121A GLY* 1.3 80.8 - - - +
123A THR* 1.3 85.6 + - - +
124A VAL* 4.4 13.2 - - + -
141A THR* 3.6 2.9 - - - +
142A VAL* 2.8 25.2 + - + -
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Residues in contact with THR 123 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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121A GLY 4.4 1.9 + - - -
122A GLU* 1.3 88.8 + - - +
124A VAL* 1.3 69.6 + - - +
125A ASN* 5.4 2.0 - - - +
139A ALA* 3.9 28.5 - - + -
140A ALA 3.3 14.8 - - - +
141A THR* 3.7 16.0 + - - +
142A VAL* 4.2 0.4 - - - -
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Residues in contact with VAL 124 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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66A THR* 3.6 20.9 - - - +
67A PRO* 3.8 28.3 - - + +
68A LEU* 3.9 17.9 - - + -
118A LEU* 5.2 2.2 - - + -
122A GLU* 4.4 13.0 - - + -
123A THR* 1.3 80.2 - - - +
125A ASN* 1.3 69.2 + - - +
140A ALA* 2.8 36.0 + - + +
142A VAL* 3.8 17.0 - - + +
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Residues in contact with ASN 125 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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66A THR* 2.8 28.3 + - - -
67A PRO* 3.6 12.8 - - + +
123A THR* 5.4 2.1 - - - +
124A VAL* 1.3 78.3 - - - +
126A ILE* 1.3 58.0 + - - +
127A THR* 5.6 1.8 - - - +
137A ASN* 5.4 12.4 - - + +
138A VAL 3.4 13.0 - - - +
139A ALA* 4.4 9.9 - - - +
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Residues in contact with ILE 126 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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33A ALA* 4.8 11.4 - - + -
35A VAL* 5.9 0.9 - - + -
49A MET* 5.7 7.9 - - + -
64A ALA* 4.0 31.6 - - + +
65A ALA 3.5 11.2 - - - +
66A THR* 4.1 7.9 - - + -
111A LEU* 5.2 11.7 - - + -
124A VAL 3.7 0.6 + - - -
125A ASN* 1.3 74.4 - - - +
127A THR* 1.3 64.4 + - - +
128A LEU* 5.0 10.3 - - + +
136A LEU 3.7 0.9 - - - +
137A ASN* 3.3 3.1 - - - +
138A VAL* 2.8 65.6 + - + +
140A ALA* 4.3 16.2 - - + -
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Residues in contact with THR 127 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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63A GLY* 4.2 0.5 - - - -
64A ALA* 3.8 0.7 + - - -
65A ALA* 2.8 47.1 + - + +
125A ASN* 5.7 2.1 - - - +
126A ILE* 1.3 72.3 + - - +
128A LEU* 1.3 69.5 + - - +
129A LYS* 5.1 3.2 - - + +
135A THR* 4.0 25.1 - - + +
136A LEU 3.3 9.0 - - - +
137A ASN* 4.5 9.2 - - + +
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Residues in contact with LEU 128 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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29A THR* 4.1 30.7 - - + +
49A MET* 5.8 7.4 - - + -
51A LEU* 6.2 0.9 - - + -
61A LEU* 3.7 18.2 - - + -
63A GLY 3.4 18.6 - - - +
64A ALA* 4.5 2.0 - - - +
126A ILE* 3.9 11.1 - - + +
127A THR* 1.3 75.2 - - - +
129A LYS* 1.3 65.6 + - - +
130A ALA* 4.5 5.8 - - + +
134A ARG* 4.6 8.5 - - + -
135A THR* 3.3 4.7 - - - -
136A LEU* 2.8 64.3 + - + +
138A VAL* 4.8 10.5 - - + -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il