Contacts of the helix formed by residues 56 - 63 (chain A) in PDB entry 4BT9
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 ASP 56 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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52A THR 4.0 2.8 + - - +
53A ALA 3.4 5.1 + - - +
55A LYS* 1.3 88.2 - - + +
57A PRO* 1.3 62.9 - - - +
58A GLU* 4.1 4.2 + - - +
59A GLY* 3.1 24.2 + - - -
60A PHE* 2.8 27.7 + - - +
135B ASN* 3.0 30.4 + - - +
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Residues in contact with PRO 57 (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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53A ALA 3.6 9.6 - - - +
54A THR* 3.7 19.1 - - - +
55A LYS 3.8 1.8 - - - -
56A ASP* 1.3 88.8 - - - +
58A GLU* 1.3 63.7 + - - +
60A PHE* 3.3 2.4 + - + +
61A VAL* 3.1 28.8 + - - +
8B ILE* 3.9 18.8 - - + -
11B MET* 3.6 19.9 - - + +
12B THR* 4.8 3.4 - - - +
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Residues in contact with GLU 58 (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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56A ASP* 3.3 4.2 + - - +
57A PRO* 1.3 78.1 - - - +
59A GLY* 1.3 65.5 + - - +
61A VAL* 3.4 4.2 - - - +
62A GLY* 3.0 20.4 + - - -
1B HIS* 2.5 41.2 + - + +
8B ILE* 4.1 24.2 - - + +
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Residues in contact with GLY 59 (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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56A ASP* 3.1 28.5 + - - -
58A GLU* 1.3 75.0 - - - +
60A PHE* 1.3 66.2 + - - +
62A GLY* 3.3 2.4 + - - -
63A HIS* 3.3 17.0 + - - +
135B ASN* 3.4 22.5 - - - +
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Residues in contact with PHE 60 (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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49A LEU 5.2 3.1 - - - -
52A THR* 4.9 4.7 - - + -
53A ALA* 3.6 37.2 - - + +
56A ASP 2.8 17.0 + - - +
57A PRO* 3.5 10.3 - - + +
58A GLU 3.2 0.2 - - - -
59A GLY* 1.3 77.6 - - - +
61A VAL* 1.3 64.9 + - + +
63A HIS 3.2 9.0 - - - +
66A ASN* 3.0 72.7 + - + +
67A ALA 5.0 0.3 + - - -
70A LEU* 4.4 10.3 - - + -
73A ARG* 5.5 3.6 - - - -
5B PHE* 4.3 6.3 - + - -
11B MET* 3.6 34.8 - - + -
15B ILE* 4.5 8.5 - - + -
135B ASN* 3.4 6.9 - - - +
144B PHE* 6.4 1.1 - + - -
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Residues in contact with VAL 61 (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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57A PRO 3.1 13.0 + - - +
58A GLU* 3.4 12.3 - - - +
60A PHE* 1.3 75.8 - - - +
62A GLY* 1.3 63.8 + - - +
63A HIS 3.3 4.3 + - - +
64A PRO* 5.0 1.4 - - - +
67A ALA* 6.1 0.5 - - - +
0B MET* 3.8 25.6 - - + +
1B HIS* 4.4 12.7 - - + +
2B PRO 4.5 8.7 - - - +
3B GLY* 5.2 4.2 - - - -
4B PHE 5.6 1.0 + - - -
5B PHE* 3.8 33.4 + - + -
8B ILE* 4.0 21.1 - - + -
11B MET* 3.8 25.8 - - + -
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Residues in contact with GLY 62 (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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58A GLU 3.0 19.0 + - - -
59A GLY* 3.3 3.3 + - - -
60A PHE 3.1 0.6 - - - -
61A VAL* 1.3 79.3 - - - +
63A HIS* 1.3 63.2 + - - +
64A PRO* 3.9 6.5 - - - +
1B HIS* 3.9 24.3 - - - +
2B PRO 4.8 6.4 - - - +
120B LEU* 5.1 2.1 - - - +
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Residues in contact with HIS 63 (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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59A GLY 3.3 7.9 + - - +
60A PHE 3.2 11.8 - - - +
61A VAL 4.4 2.3 - - - +
62A GLY* 1.3 81.4 - - - +
64A PRO* 1.3 74.4 - - + +
65A VAL 3.3 1.3 - - - +
66A ASN* 3.1 26.8 + - - +
67A ALA 4.3 0.9 + - - -
126B LEU* 5.6 5.8 - - + -
130B THR* 3.6 36.8 + - + +
131B ILE* 4.6 5.7 + - - +
134B GLY* 3.5 35.1 + - - -
135B ASN* 4.1 9.2 - - + +
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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