Contacts of the strand formed by residues 23 - 28 (chain B) in PDB entry 3IYD
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 HIS 23 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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19B VAL* 3.4 16.8 + - + +
20B SER* 3.3 37.1 + - - +
22B THR* 1.3 83.9 + - - +
24B ALA* 1.3 70.2 + - - +
25B LYS* 3.0 31.6 - - - +
204B GLU* 3.7 26.9 + - - +
205B MET 3.1 26.1 + - - -
206B GLU* 4.0 18.4 - - + +
213B PRO* 4.7 0.2 - - - -
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Residues in contact with ALA 24 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16B ILE* 4.4 5.8 - - + -
17B GLU 3.3 16.6 - - - +
18B GLN* 3.4 24.2 - - - +
19B VAL* 4.6 1.3 - - - -
22B THR 4.0 1.0 + - - -
23B HIS* 1.3 87.4 + - - +
25B LYS* 1.3 74.7 + - - +
26B VAL* 4.5 4.2 + - + +
203B ILE 4.8 5.4 - - - +
204B GLU* 5.5 0.5 - - - -
205B MET* 4.0 12.4 + - + +
213B PRO* 3.8 17.2 - - + +
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Residues in contact with LYS 25 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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15B ASP 4.0 2.8 - - - +
16B ILE* 3.8 12.1 - - - +
17B GLU* 3.1 54.5 + - + +
19B VAL* 4.8 9.2 - - + +
23B HIS* 3.0 32.0 + - + -
24B ALA* 1.3 81.5 - - - +
26B VAL* 1.3 67.8 + - - +
27B THR* 4.0 10.9 - - + +
202B VAL* 5.7 10.3 - - + -
203B ILE 5.0 4.7 - - - +
204B GLU* 6.1 4.9 - - - -
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Residues in contact with VAL 26 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
231A PHE* 5.3 5.4 - - + -
13B LEU* 4.4 17.0 - - + -
16B ILE* 5.3 6.7 - - + -
24B ALA* 5.4 2.9 - - + -
25B LYS* 1.3 80.7 - - - +
27B THR* 1.3 66.2 - - - +
28B LEU* 6.0 1.1 - - + -
201B LEU 3.4 14.4 - - - +
202B VAL* 4.5 0.7 - - - -
203B ILE* 3.5 40.4 + - + +
205B MET* 5.4 4.5 - - + -
213B PRO 5.2 1.8 - - - +
217B ILE* 3.7 45.3 - - + -
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Residues in contact with THR 27 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
12B ARG 5.1 0.9 - - - +
13B LEU* 4.1 15.8 - - - +
14B VAL* 4.5 15.1 + - - +
15B ASP* 4.3 15.3 + - - +
25B LYS* 4.0 9.8 + - + -
26B VAL* 1.3 80.6 - - - +
28B LEU* 1.3 69.0 + - - +
29B GLU 4.2 1.7 + - - -
200B LYS* 6.5 0.2 - - - -
201B LEU 4.1 2.9 - - - -
202B VAL* 5.7 3.8 - - + +
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Residues in contact with LEU 28 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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231A PHE* 5.3 15.9 - - + -
11B PRO* 3.5 27.4 - - + -
12B ARG* 3.9 22.9 - - - +
13B LEU* 4.8 1.1 - - - +
26B VAL* 5.2 1.8 - - + +
27B THR* 1.3 81.1 - - - +
29B GLU* 1.3 63.9 - - - +
30B PRO* 4.5 0.9 - - + -
31B LEU* 3.3 18.2 - - + +
39B LEU* 3.8 28.9 - - + -
200B LYS* 3.6 4.1 - - - +
201B LEU* 3.2 52.7 + - + +
203B ILE* 6.3 0.4 - - + -
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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