Contacts of the strand formed by residues 17 - 25 (chain A) in PDB entry 2XGZ
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 PRO 17 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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9A SER* 4.7 8.3 - - - -
10A VAL 3.2 11.7 - - - +
11A TYR* 4.3 5.3 - - + -
12A ASP* 4.9 0.7 - - - +
15A GLY 4.4 0.9 - - - +
16A ASN* 1.3 91.9 - - + +
18A THR* 1.3 61.4 + - - +
49A ARG* 2.8 30.0 + - - -
56A TRP* 3.5 51.4 - - + +
59A LYS* 3.4 22.9 - - + +
60A GLY* 3.9 2.5 - - - -
61A VAL* 3.9 16.6 - - + +
191B HIS* 6.1 0.2 - - + -
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Residues in contact with THR 18 (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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9A SER* 3.5 6.9 - - - -
10A VAL* 2.8 39.1 + - + +
12A ASP* 4.3 14.1 - - + +
16A ASN 4.6 1.1 - - - -
17A PRO* 1.3 76.4 - - - +
19A VAL* 1.3 65.3 + - - +
33A ILE* 3.8 19.3 - - + -
34A VAL* 2.5 36.2 + - - +
35A PRO 4.6 2.6 + - - -
36A SER* 5.0 6.3 - - - -
49A ARG* 5.5 1.2 + - - +
61A VAL* 3.6 13.9 - - - +
108A ASN* 5.5 1.7 + - - +
378A THR* 4.0 11.2 - - + -
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Residues in contact with VAL 19 (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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7A ALA* 4.3 11.7 - - + -
8A ARG 3.8 3.1 - - - -
18A THR* 1.3 81.3 + - - +
20A GLU* 1.3 65.0 + - - +
21A VAL* 4.1 21.5 + - + -
32A SER 4.1 0.2 - - - +
33A ILE* 3.6 3.5 - - - +
34A VAL* 3.0 33.8 + - + +
61A VAL* 3.9 15.9 - - + -
64A ALA* 3.9 23.3 - - + -
65A VAL* 4.2 7.9 - - + -
68A VAL* 4.5 6.7 - - + -
108A ASN* 3.3 37.5 - - + +
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Residues in contact with GLU 20 (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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6A TYR 3.9 0.2 - - - +
7A ALA* 3.1 5.9 - - - +
8A ARG* 2.6 75.6 + - + +
10A VAL* 3.8 19.8 - - + +
18A THR 3.8 0.4 + - - -
19A VAL* 1.3 74.5 - - - +
21A VAL* 1.3 64.9 + - - +
31A ARG* 3.5 22.1 + - + -
32A SER 3.4 6.7 - - - +
33A ILE* 3.1 19.9 - - + +
414B ARG* 2.8 38.0 + - - -
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Residues in contact with VAL 21 (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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5A VAL* 4.4 7.0 - - + -
6A TYR 3.3 7.0 - - - +
7A ALA* 4.1 1.1 - - + -
19A VAL* 4.1 15.7 - - + -
20A GLU* 1.3 78.8 - - - +
22A GLU* 1.3 74.0 + - - +
23A LEU* 4.6 1.3 - - + +
30A PHE 3.5 1.2 - - - +
31A ARG* 3.3 5.7 - - - +
32A SER* 2.8 33.2 + - - +
68A VAL* 4.1 21.5 - - + -
109A ALA 4.6 0.2 - - - +
112A GLY* 3.7 42.4 - - - +
113A VAL* 4.0 16.4 - - + +
116A ALA* 4.3 5.1 - - + +
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Residues in contact with GLU 22 (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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4A LYS 3.9 1.0 - - - +
5A VAL* 3.4 3.8 - - - -
6A TYR* 2.7 52.7 + - + +
8A ARG* 3.0 42.4 + - - +
21A VAL* 1.3 82.2 - - - +
23A LEU* 1.3 61.3 + - - +
24A THR* 5.1 1.6 + - - +
29A VAL* 3.8 28.4 - - + +
30A PHE 3.3 2.2 - - - -
31A ARG* 3.1 37.2 + - + +
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Residues in contact with LEU 23 (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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2A VAL* 3.8 24.0 - - + -
4A LYS 3.5 2.7 - - - -
5A VAL* 4.2 11.2 - - + +
21A VAL* 5.1 0.9 - - + -
22A GLU* 1.3 74.2 - - - +
24A THR* 1.3 60.4 + - - +
25A THR* 3.8 25.6 - - + -
29A VAL* 3.4 1.2 - - - -
30A PHE* 2.7 40.7 + - + +
76A PHE* 4.2 21.3 - - + -
83A VAL* 4.5 1.3 - - + -
113A VAL* 4.1 14.8 - - + +
116A ALA* 3.9 16.6 - - + +
117A ALA* 3.9 23.1 - - + +
120A ALA* 3.9 15.7 - - + -
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Residues in contact with THR 24 (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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2A VAL* 3.4 6.9 - - - +
3A SER* 2.8 44.1 + - - +
4A LYS* 2.8 35.2 + - + +
22A GLU* 5.1 1.9 + - - +
23A LEU* 1.3 74.7 - - - +
25A THR* 1.3 71.4 + - - +
28A GLY 3.3 10.8 - - - +
29A VAL* 3.8 22.6 - - + +
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Residues in contact with THR 25 (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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1A ALA* 3.2 20.0 - - + +
2A VAL* 4.2 9.4 - - + -
3A SER* 4.5 3.1 - - - -
23A LEU* 3.8 20.6 - - + -
24A THR* 1.3 88.5 - - - +
26A GLU* 1.3 71.5 + - - +
27A LYS* 3.0 18.5 + - - +
28A GLY* 2.9 17.4 + - - +
30A PHE* 3.4 14.5 - - + -
83A VAL* 5.1 5.4 - - + -
120A ALA* 3.8 16.5 + - + +
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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