Contacts of the helix formed by residues 69 - 74 (chain H) in PDB entry 1ZMD
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 THR 69 (chain H).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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68H GLY* 1.3 75.0 - - - -
70H ASP* 1.4 68.2 + - - +
71H PHE 3.6 0.4 - - - -
72H ALA* 3.6 8.6 + - - +
73H SER* 3.2 21.9 + - - -
2027H SO4 3.1 34.0 + - - +
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Residues in contact with ASP 70 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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62G TYR* 5.4 1.4 - - - -
65H MET* 3.6 40.9 + - + +
68H GLY 3.5 2.4 - - - -
69H THR* 1.4 78.8 + - - +
71H PHE* 1.3 78.2 + - - +
73H SER* 2.6 26.2 + - - -
74H ARG* 2.7 47.5 + - - +
398H ALA* 4.7 4.5 - - - +
2027H SO4 4.2 4.2 + - - +
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Residues in contact with PHE 71 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
62G TYR* 3.6 52.5 - + + -
66G ALA* 3.8 4.9 - - + -
71G PHE* 3.5 38.8 - + - -
62H TYR* 5.9 0.2 - + - -
65H MET* 3.0 34.3 + - + +
66H ALA* 4.1 4.9 - - - +
68H GLY 4.8 0.2 + - - -
69H THR 3.6 0.2 - - - -
70H ASP* 1.3 89.6 - - - +
72H ALA* 1.3 57.8 + - - +
74H ARG* 2.9 22.3 + - - +
75H GLY 3.2 0.2 + - - -
76H ILE* 2.9 46.3 + - + +
78H MET* 3.6 26.0 - - + -
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Residues in contact with ALA 72 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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87G LYS* 3.5 14.1 - - - +
66H ALA 5.7 0.2 + - - -
68H GLY 4.8 6.8 + - - +
69H THR* 3.6 12.7 + - - +
70H ASP 3.3 0.8 - - - -
71H PHE* 1.3 77.1 - - - +
73H SER* 1.3 58.4 + - - +
74H ARG 3.0 0.2 - - - -
75H GLY* 3.0 16.6 + - - -
76H ILE 3.6 11.8 + - - +
77H GLU* 4.9 11.5 - - + +
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Residues in contact with SER 73 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
87G LYS* 3.8 25.1 - - - +
90G GLU* 5.3 0.3 - - - +
91G GLN* 3.7 19.3 - - - +
69H THR* 3.2 10.5 + - - -
70H ASP* 2.6 26.4 + - - -
72H ALA* 1.3 78.1 - - - +
74H ARG* 1.3 63.3 + - - +
75H GLY 3.3 0.9 - - - -
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Residues in contact with ARG 74 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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58G ASN* 3.5 13.7 + - - -
59G ASN* 2.9 32.7 + - - +
62G TYR* 4.4 18.9 - - - -
88G MET* 3.1 34.4 - - - +
91G GLN* 4.1 21.8 - - + +
70H ASP* 2.7 47.8 + - - +
71H PHE* 2.9 15.8 + - - +
73H SER* 1.3 83.1 + - - +
75H GLY* 1.3 61.2 + - - +
76H ILE* 4.4 11.4 - - + -
396H THR 5.0 0.4 + - - -
397H ASN* 2.7 29.7 + - - +
398H ALA* 4.0 10.2 + - - +
399H ASP* 5.5 1.4 - - - +
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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