Contacts of the helix formed by residues 26 - 33 (chain B) in PDB entry 3N1Y
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 SER 26 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24B ARG* 3.6 15.9 + - - +
25B PRO* 1.3 76.5 - - - +
27B GLU* 1.3 63.6 + - - +
28B TYR* 3.5 12.0 + - - +
29B GLU* 3.2 31.6 + - - +
30B VAL* 2.9 22.8 + - - +
80B GLN* 4.1 11.4 + - - -
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Residues in contact with GLU 27 (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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70A TYR* 4.2 14.0 + - - -
143A TYR* 3.9 30.2 - - + +
24B ARG* 5.3 1.4 - - - +
26B SER* 1.3 73.2 - - - +
28B TYR* 1.3 64.1 + - - +
30B VAL* 3.2 9.2 + - - +
31B VAL* 3.0 35.8 + - + +
82B VAL* 4.1 17.9 - - + +
84B ARG* 2.9 46.8 + - - -
85B THR* 4.7 2.9 - - - +
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Residues in contact with TYR 28 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
26B SER* 3.1 8.6 + - - +
27B GLU* 1.3 80.1 - - - +
29B GLU* 1.3 74.0 + - + +
32B SER* 2.7 51.9 + - - -
33B THR* 5.5 0.2 - - + -
76B ARG* 3.7 23.1 - - - -
77B ASP* 2.9 34.9 + - + +
80B GLN* 3.5 61.9 - - + +
81B LEU 3.7 16.2 - - - -
82B VAL* 4.0 9.4 - - + +
150B THR* 3.5 28.6 + - + +
153B ASN* 5.7 3.1 - - + -
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Residues in contact with GLU 29 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
18B LEU* 3.9 15.7 - - + +
21B ASN* 4.6 13.4 + - - -
23B ARG 5.1 1.7 - - - +
24B ARG 4.7 0.9 - - - +
25B PRO* 3.6 9.4 - - + +
26B SER* 3.2 33.3 + - - +
28B TYR* 1.3 87.3 - - + +
30B VAL* 1.3 62.3 + - - +
31B VAL 3.5 0.2 + - - -
33B THR* 2.7 39.4 + - + -
76B ARG* 3.7 33.5 + - - +
80B GLN* 5.9 0.9 - - - +
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Residues in contact with VAL 30 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
142A LEU* 3.9 8.9 - - - +
143A TYR* 4.5 10.5 - - + -
146A TYR* 3.5 55.0 - - + +
159A HIS* 5.1 1.6 - - - -
15B TRP* 3.0 39.6 + - + +
18B LEU* 4.4 1.6 - - + -
25B PRO* 4.1 13.0 - - + +
26B SER 2.9 20.0 + - - +
27B GLU* 3.2 11.2 + - - +
29B GLU* 1.3 78.7 - - - +
31B VAL* 1.3 67.6 + - + +
32B SER 4.0 0.2 + - - -
33B THR* 5.1 1.0 + - - +
35B LEU* 5.8 0.2 - - - +
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Residues in contact with VAL 31 (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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70A TYR* 5.7 0.7 - - - +
139A GLN* 3.4 55.9 - - + +
142A LEU* 3.9 12.2 - - - +
143A TYR* 3.8 23.8 - - + +
27B GLU* 3.0 24.7 + - + +
30B VAL* 1.3 86.9 - - + +
32B SER* 1.3 59.5 + - - +
33B THR 4.0 0.4 - - - -
35B LEU* 3.5 12.0 - - - +
82B VAL* 3.2 31.9 - - + -
153B ASN* 4.8 0.2 - - - +
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Residues in contact with SER 32 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
139A GLN* 4.1 1.6 + - - -
28B TYR* 2.7 45.0 + - - -
31B VAL* 1.3 88.0 + - - +
33B THR* 1.3 56.7 + - - +
35B LEU* 4.0 7.0 - - - -
81B LEU 4.7 0.9 + - - -
82B VAL* 4.1 3.5 - - - +
149B SER* 2.7 30.1 + - - +
150B THR* 3.5 15.7 + - - +
153B ASN* 3.7 19.3 + - - -
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Residues in contact with THR 33 (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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159A HIS* 2.9 19.4 + - - -
17B HIS* 2.9 22.5 - - - -
18B LEU* 3.8 3.3 - - + +
28B TYR* 5.5 0.2 - - + -
29B GLU* 2.7 34.6 + - + +
30B VAL 5.1 1.1 + - - +
31B VAL 4.0 0.4 - - - -
32B SER* 1.3 77.8 - - - +
34B ASN* 1.3 80.6 + - - +
35B LEU* 3.2 8.1 + - - +
76B ARG* 3.4 43.1 - - - +
149B SER* 3.9 0.2 - - - -
150B THR* 4.0 8.3 - - + -
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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