Contacts of the strand formed by residues 19 - 26 (chain A) in PDB entry 2L1B
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 LYS 19 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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15A VAL* 3.4 1.2 - - - -
16A ARG 3.0 34.8 + - - +
17A LYS* 3.8 16.6 - - + +
18A GLY* 1.3 78.8 - - - +
20A VAL* 1.3 59.8 + - - +
21A GLU* 3.2 17.1 + - + +
38A PRO* 4.3 29.2 - - + -
39A GLU* 5.6 0.2 - - - -
40A GLU* 5.6 9.9 - - - +
41A HIS* 5.8 5.1 + - - -
30B PRO* 6.3 3.4 - - + -
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Residues in contact with VAL 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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13A LYS* 3.7 20.2 - - - -
14A ARG 3.4 11.2 - - - +
15A VAL* 4.0 18.6 - - + +
18A GLY 3.6 8.0 + - - +
19A LYS* 1.3 69.9 - - - +
21A GLU* 1.3 57.9 + - - +
22A TYR* 3.6 29.8 + - + +
38A PRO* 3.1 20.8 - - - +
39A GLU* 3.3 31.6 + - - +
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Residues in contact with GLU 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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13A LYS* 3.4 4.5 - - - -
14A ARG* 2.9 73.6 + - + +
16A ARG* 3.1 43.1 + - - +
19A LYS* 3.4 21.9 - - + +
20A VAL* 1.3 72.2 - - - +
22A TYR* 1.3 64.5 + - - +
36A TRP* 4.2 26.6 - - + +
38A PRO* 3.9 10.8 - - + -
30B PRO* 5.3 6.8 - - - +
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Residues in contact with TYR 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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10A ILE* 3.8 22.4 - - + -
12A LYS 3.6 3.1 - - - -
13A LYS* 3.8 18.7 + - + -
20A VAL* 3.6 31.1 - - + +
21A GLU* 1.3 78.1 - - - +
23A LEU* 1.3 60.2 + - - +
24A VAL* 3.1 6.1 + - + +
35A THR 2.9 16.1 - - - +
36A TRP* 4.0 2.5 - - - -
37A GLU 2.9 30.4 + - - +
39A GLU* 3.5 37.2 + - + +
42A ILE* 3.8 16.4 - - + -
48A VAL* 3.5 46.5 - - + +
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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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10A ILE* 3.6 3.0 - - - -
11A ARG* 2.8 46.0 + - + +
12A LYS* 2.9 48.4 + - + +
22A TYR* 1.3 67.0 - - - +
24A VAL* 1.3 58.5 + - - +
25A LYS 3.2 1.6 + - - -
31A PRO 5.6 0.7 - - - +
34A SER* 3.3 46.2 - - - +
35A THR 3.6 2.2 - - - -
36A TRP* 3.6 46.8 - - + +
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Residues in contact with VAL 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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7A VAL* 3.5 27.4 - - + -
9A SER 4.1 3.1 - - - +
10A ILE* 4.1 11.9 - - + -
22A TYR 3.4 14.4 - - - +
23A LEU* 1.3 67.8 - - - +
25A LYS* 1.3 57.4 + - - +
26A TRP* 3.2 39.0 - - + -
34A SER* 3.2 23.0 - - - -
35A THR 2.9 14.5 + - - +
37A GLU* 3.8 9.4 - - + -
42A ILE* 3.5 28.0 - - + -
25B ALA* 3.9 7.2 - - + -
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Residues in contact with LYS 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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7A VAL* 3.2 2.9 - - - +
8A GLU* 2.9 59.1 + - - +
9A SER* 2.9 31.2 + - - +
11A ARG* 3.9 26.9 - - + +
23A LEU 3.2 3.8 + - - -
24A VAL* 1.3 68.1 - - - +
26A TRP* 1.3 80.9 + - - +
27A LYS* 4.8 3.2 + - - +
29A TRP 3.3 13.9 + - - +
30A PRO* 4.6 0.4 - - - +
31A PRO* 3.8 42.4 - - + -
34A SER* 4.2 5.2 - - - -
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Residues in contact with TRP 26 (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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3A GLN 4.3 1.8 - - - -
5A PHE* 3.3 41.7 - - + -
6A ALA 3.8 5.6 - - - +
7A VAL* 3.9 6.3 - - + +
8A GLU* 3.7 1.6 - - - +
24A VAL* 3.2 30.3 + - + -
25A LYS* 1.3 101.0 + - - +
27A LYS* 1.3 59.1 + - - +
28A GLY 3.4 0.2 - - - -
29A TRP* 3.0 36.5 + + + +
30A PRO 5.7 0.4 + - - -
33A TYR 3.6 19.3 + - - -
34A SER* 4.0 2.9 - - - -
35A THR* 3.2 20.9 + - - -
25B ALA* 3.6 19.5 - - + -
26B ARG* 3.5 32.5 - - - -
27B M3L 3.4 40.3 - - + -
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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